/*ADD A, R0 to R7 1: 0010 1rrr */
INLINE void add_a_r(int r)
{
UINT8 data = R_R(r); /*Grab data from R0 - R7 */
UINT8 result = R_ACC + data; /*Add data to accumulator */
DO_ADD_FLAGS(R_ACC,data,0); /*Set Flags */
SFR_W(ACC,result); /*Store 8 bit result of addtion in ACC */
}
/*ADD A, @R0/@R1 1: 0010 011i */
INLINE void add_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); /*Grab data from memory pointed to by R0 or R1 */
UINT8 result = R_ACC + data; /*Add data to accumulator */
DO_ADD_FLAGS(R_ACC,data,0); /*Set Flags */
SFR_W(ACC,result); /*Store 8 bit result of addtion in ACC */
}
/*XCH A, @RO/@R1 1: 1100 011i */
INLINE void xch_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); /*Grab data pointed to by R0 or R1 */
UINT8 oldACC = R_ACC; /*Hold value of ACC */
SFR_W(ACC,data); /*Sets ACC to data */
IRAM_W(R_R(r),oldACC); /*Sets data address to old value of ACC */
}
/*******************************************************************************************
NOTE: All registers are accessed directly, instead of using the SFR_R() function for speed
Direct register access is availabe from the R_(register name) macros.. ex: R_ACC for the ACC
with the exception of the PC
********************************************************************************************/
//ACALL code addr /* 1: aaa1 0001 */
INLINE void acall(void)
{
UINT8 op = ROP(PC-1); //Grab the opcode for ACALL
UINT8 addr = ROP_ARG(PC++); //Grab code address byte
PUSH_PC //Save PC to the stack
//Thanks Gerrit for help with this! :)
PC = (PC & 0xf800) | ((op & 0xe0) << 3) | addr;
}
//ADD A, #data /* 1: 0010 0100 */
INLINE void add_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0) //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, data addr /* 1: 0010 0101 */
INLINE void add_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, @R0/@R1 /* 1: 0010 011i */
INLINE void add_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, R0 to R7 /* 1: 0010 1rrr */
INLINE void add_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, #data /* 1: 0011 0100 */
INLINE void addc_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, data addr /* 1: 0011 0101 */
INLINE void addc_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, @R0/@R1 /* 1: 0011 011i */
INLINE void addc_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
/*ADD A, #data 1: 0010 0100 */
INLINE void add_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); /*Grab data */
UINT8 result = R_ACC + data; /*Add data to accumulator */
DO_ADD_FLAGS(R_ACC,data,0) /*Set Flags */
SFR_W(ACC,result); /*Store 8 bit result of addtion in ACC */
}
/*******************************************************************************************
NOTE: All registers are accessed directly, instead of using the SFR_R() function for speed
Direct register access is availabe from the R_(register name) macros.. ex: R_ACC for the ACC
with the exception of the PC
********************************************************************************************/
//ACALL code addr /* 1: aaa1 0001 */
INLINE void acall(void)
{
UINT8 op = ROP(PC-1); //Grab the opcode for ACALL
UINT8 addr = ROP_ARG(PC++); //Grab code address byte
PUSH_PC //Save PC to the stack
//Thanks Gerrit for help with this! :)
PC = (PC & 0xf800) | ((op & 0xe0) << 3) | addr;
}
//ADD A, #data /* 1: 0010 0100 */
INLINE void add_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0) //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, data addr /* 1: 0010 0101 */
INLINE void add_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, @R0/@R1 /* 1: 0010 011i */
INLINE void add_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, R0 to R7 /* 1: 0010 1rrr */
INLINE void add_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, #data /* 1: 0011 0100 */
INLINE void addc_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
/*******************************************************************************************
NOTE: All registers are accessed directly, instead of using the SFR_R() function for speed
Direct register access is availabe from the R_(register name) macros.. ex: R_ACC for the ACC
with the exception of the PC
********************************************************************************************/
//ACALL code addr /* 1: aaa1 0001 */
INLINE void acall(void)
{
UINT8 op = ROP(PC-1); //Grab the opcode for ACALL
UINT8 addr = ROP_ARG(PC++); //Grab code address byte
PUSH_PC //Save PC to the stack
//Thanks Gerrit for help with this! :)
PC = (PC & 0xf800) | ((op & 0xe0) << 3) | addr;
}
//ADD A, #data /* 1: 0010 0100 */
INLINE void add_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0) //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, data addr /* 1: 0010 0101 */
INLINE void add_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, @R0/@R1 /* 1: 0010 011i */
INLINE void add_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, R0 to R7 /* 1: 0010 1rrr */
INLINE void add_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, #data /* 1: 0011 0100 */
INLINE void addc_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, data addr /* 1: 0011 0101 */
INLINE void addc_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, @R0/@R1 /* 1: 0011 011i */
INLINE void addc_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, R0 to R7 /* 1: 0011 1rrr */
INLINE void addc_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//RLC A /* 1: 0011 0011 */
INLINE void rlc_a(void)
{
//Left Shift A, Bit 7 goes to Carry Flag, Original Carry Flag goes to Bit 0 of ACC
int carry = ((R_ACC & 0x80) >> 7);
int data = ((R_ACC<<1) & 0xfe) | GET_CY;
SFR_W(ACC, data);
SET_CY(carry);
}
//RR A /* 1: 0000 0011 */
INLINE void rr_a(void)
{
//Right Shift A, Bit 0 carries to Bit 7
int carry = ((R_ACC & 1) << 7);
int data = (R_ACC>>1) & 0x7f;
SFR_W(ACC, data | carry);
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
/*XCH A, RO to R7 1: 1100 1rrr */
INLINE void xch_a_r(int r)
{
UINT8 data = R_R(r); /*Grab data from R0-R7 */
UINT8 oldACC = R_ACC; /*Hold value of ACC */
SFR_W(ACC,data); /*Sets ACC to data */
R_R(r) = oldACC; /*Sets data address to old value of ACC */
}
/*SWAP A 1: 1100 0100 */
INLINE void swap_a(void)
{
UINT8 a_nib_lo, a_nib_hi;
a_nib_hi = (R_ACC & 0x0f) << 4; /*Grab lo byte of ACC and move to hi */
a_nib_lo = (R_ACC & 0xf0) >> 4; /*Grab hi byte of ACC and move to lo */
SFR_W(ACC, a_nib_hi | a_nib_lo);
}
/*SUBB A, R0 to R7 1: 1001 1rrr */
INLINE void subb_a_r(int r)
{
UINT8 data = R_R(r); /*Grab data from R0 - R7 */
UINT8 result = R_ACC - data - GET_CY; /*Subtract data & carry flag from accumulator */
DO_SUB_FLAGS(R_ACC,data,GET_CY); /*Set Flags */
SFR_W(ACC,result); /*Store 8 bit result of addtion in ACC */
}
/*SUBB A, @R0/@R1 1: 1001 011i */
INLINE void subb_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); /*Grab data from memory pointed to by R0 or R1 */
UINT8 result = R_ACC - data - GET_CY; /*Subtract data & carry flag from accumulator */
DO_SUB_FLAGS(R_ACC,data,GET_CY); /*Set Flags */
SFR_W(ACC,result); /*Store 8 bit result of addtion in ACC */
}
/*ADD A, data addr 1: 0010 0101 */
INLINE void add_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); /*Grab data address */
UINT8 data = IRAM_R(addr); /*Grab data from data address */
UINT8 result = R_ACC + data; /*Add data to accumulator */
DO_ADD_FLAGS(R_ACC,data,0); /*Set Flags */
SFR_W(ACC,result); /*Store 8 bit result of addtion in ACC */
}
/*XCH A, data addr 1: 1100 0101 */
INLINE void xch_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); /*Grab data address */
UINT8 data = IRAM_R(addr); /*Grab data */
UINT8 oldACC = R_ACC; /*Hold value of ACC */
SFR_W(ACC,data); /*Sets ACC to data */
IRAM_W(addr,oldACC); /*Sets data address to old value of ACC */
}
/*SUBB A, #data 1: 1001 0100 */
INLINE void subb_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); /*Grab data */
UINT8 result = R_ACC - data - GET_CY; /*Subtract data & carry flag from accumulator */
DO_SUB_FLAGS(R_ACC,data,GET_CY); /*Set Flags */
SFR_W(ACC,result); /*Store 8 bit result of addtion in ACC */
}
/*******************************************************************************************
NOTE: All registers are accessed directly, instead of using the SFR_R() function for speed
Direct register access is availabe from the R_(register name) macros.. ex: R_ACC for the ACC
with the exception of the PC
********************************************************************************************/
//ACALL code addr /* 1: aaa1 0001 */
INLINE void acall(void)
{
UINT8 op = ROP(PC-1); //Grab the opcode for ACALL
UINT8 addr = ROP_ARG(PC++); //Grab code address byte
PUSH_PC //Save PC to the stack
//Thanks Gerrit for help with this! :)
PC = (PC & 0xf800) | ((op & 0xe0) << 3) | addr;
}
//ADD A, #data /* 1: 0010 0100 */
INLINE void add_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0) //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, data addr /* 1: 0010 0101 */
INLINE void add_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, @R0/@R1 /* 1: 0010 011i */
INLINE void add_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, R0 to R7 /* 1: 0010 1rrr */
INLINE void add_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, #data /* 1: 0011 0100 */
INLINE void addc_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, data addr /* 1: 0011 0101 */
INLINE void addc_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//RLC A /* 1: 0011 0011 */
INLINE void rlc_a(void)
{
//Left Shift A, Bit 7 goes to Carry Flag, Original Carry Flag goes to Bit 0 of ACC
int carry = ((R_ACC & 0x80) >> 7);
int data = ((R_ACC<<1) & 0xfe) | GET_CY;
SFR_W(ACC, data);
SET_CY(carry);
}
//RR A /* 1: 0000 0011 */
INLINE void rr_a(void)
{
//Right Shift A, Bit 0 carries to Bit 7
int carry = ((R_ACC & 1) << 7);
int data = (R_ACC>>1) & 0x7f;
SFR_W(ACC, data | carry);
}
//RRC A /* 1: 0001 0011 */
INLINE void rrc_a(void)
{
//Right Shift A, Bit 0 goes to Carry Flag, Bit 7 of ACC gets set to original Carry Flag
int carry = (R_ACC & 1);
int data = ((R_ACC>>1) & 0x7f) | (GET_CY<<7);
SFR_W(ACC, data);
SET_CY(carry);
}
//SETB C /* 1: 1101 0011 */
INLINE void setb_c(void)
{
SET_CY(1); //Set Carry Flag
}
//SETB bit addr /* 1: 1101 0010 */
INLINE void setb_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,1); //Set Bit at Bit Address
}
//SJMP code addr /* 1: 1000 0000 */
INLINE void sjmp(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
PC = PC + rel_addr; //Update PC
}
//SUBB A, #data /* 1: 1001 0100 */
INLINE void subb_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, data addr /* 1: 1001 0101 */
INLINE void subb_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, @R0/@R1 /* 1: 1001 011i */
INLINE void subb_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, R0 to R7 /* 1: 1001 1rrr */
INLINE void subb_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SWAP A /* 1: 1100 0100 */
INLINE void swap_a(void)
{
UINT8 a_nib_lo, a_nib_hi;
a_nib_hi = (R_ACC & 0x0f) << 4; //Grab lo byte of ACC and move to hi
a_nib_lo = (R_ACC & 0xf0) >> 4; //Grab hi byte of ACC and move to lo
SFR_W(ACC, a_nib_hi | a_nib_lo);
}
//XCH A, data addr /* 1: 1100 0101 */
INLINE void xch_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
IRAM_W(addr,oldACC); //Sets data address to old value of ACC
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//RLC A /* 1: 0011 0011 */
INLINE void rlc_a(void)
{
//Left Shift A, Bit 7 goes to Carry Flag, Original Carry Flag goes to Bit 0 of ACC
int carry = ((R_ACC & 0x80) >> 7);
int data = ((R_ACC<<1) & 0xfe) | GET_CY;
SFR_W(ACC, data);
SET_CY(carry);
}
//RR A /* 1: 0000 0011 */
INLINE void rr_a(void)
{
//Right Shift A, Bit 0 carries to Bit 7
int carry = ((R_ACC & 1) << 7);
int data = (R_ACC>>1) & 0x7f;
SFR_W(ACC, data | carry);
}
//RRC A /* 1: 0001 0011 */
INLINE void rrc_a(void)
{
//Right Shift A, Bit 0 goes to Carry Flag, Bit 7 of ACC gets set to original Carry Flag
int carry = (R_ACC & 1);
int data = ((R_ACC>>1) & 0x7f) | (GET_CY<<7);
SFR_W(ACC, data);
SET_CY(carry);
}
//SETB C /* 1: 1101 0011 */
INLINE void setb_c(void)
{
SET_CY(1); //Set Carry Flag
}
//SETB bit addr /* 1: 1101 0010 */
INLINE void setb_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,1); //Set Bit at Bit Address
}
//SJMP code addr /* 1: 1000 0000 */
INLINE void sjmp(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
PC = PC + rel_addr; //Update PC
}
//SUBB A, #data /* 1: 1001 0100 */
INLINE void subb_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, data addr /* 1: 1001 0101 */
INLINE void subb_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, @R0/@R1 /* 1: 1001 011i */
INLINE void subb_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, R0 to R7 /* 1: 1001 1rrr */
INLINE void subb_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SWAP A /* 1: 1100 0100 */
INLINE void swap_a(void)
{
UINT8 a_nib_lo, a_nib_hi;
a_nib_hi = (R_ACC & 0x0f) << 4; //Grab lo byte of ACC and move to hi
a_nib_lo = (R_ACC & 0xf0) >> 4; //Grab hi byte of ACC and move to lo
SFR_W(ACC, a_nib_hi | a_nib_lo);
}
//XCH A, data addr /* 1: 1100 0101 */
INLINE void xch_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
IRAM_W(addr,oldACC); //Sets data address to old value of ACC
}
//XCH A, @RO/@R1 /* 1: 1100 011i */
INLINE void xch_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data pointed to by R0 or R1
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
IRAM_W(R_R(r),oldACC); //Sets data address to old value of ACC
}
//XCH A, RO to R7 /* 1: 1100 1rrr */
INLINE void xch_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0-R7
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
R_R(r) = oldACC; //Sets data address to old value of ACC
}
//XCHD A, @R0/@R1 /* 1: 1101 011i */
INLINE void xchd_a_ir(int r)
{
UINT8 acc, ir_data;
ir_data = IRAM_IR(R_R(r)); //Grab data pointed to by R0 or R1
acc = R_ACC; //Grab ACC value
SFR_W(ACC, (acc & 0xf0) | (ir_data & 0x0f) ); //Set ACC to lower nibble of data pointed to by R0 or R1
IRAM_W(R_R(r), (ir_data & 0xf0) | (acc & 0x0f) ); //Set data pointed to by R0 or R1 to lower nibble of ACC
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//RLC A /* 1: 0011 0011 */
INLINE void rlc_a(void)
{
//Left Shift A, Bit 7 goes to Carry Flag, Original Carry Flag goes to Bit 0 of ACC
int carry = ((R_ACC & 0x80) >> 7);
int data = ((R_ACC<<1) & 0xfe) | GET_CY;
SFR_W(ACC, data);
SET_CY(carry);
}
//RR A /* 1: 0000 0011 */
INLINE void rr_a(void)
{
//Right Shift A, Bit 0 carries to Bit 7
int carry = ((R_ACC & 1) << 7);
int data = (R_ACC>>1) & 0x7f;
SFR_W(ACC, data | carry);
}
//RRC A /* 1: 0001 0011 */
INLINE void rrc_a(void)
{
//Right Shift A, Bit 0 goes to Carry Flag, Bit 7 of ACC gets set to original Carry Flag
int carry = (R_ACC & 1);
int data = ((R_ACC>>1) & 0x7f) | (GET_CY<<7);
SFR_W(ACC, data);
SET_CY(carry);
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//RLC A /* 1: 0011 0011 */
INLINE void rlc_a(void)
{
//Left Shift A, Bit 7 goes to Carry Flag, Original Carry Flag goes to Bit 0 of ACC
int carry = ((R_ACC & 0x80) >> 7);
int data = ((R_ACC<<1) & 0xfe) | GET_CY;
SFR_W(ACC, data);
SET_CY(carry);
}
//RR A /* 1: 0000 0011 */
INLINE void rr_a(void)
{
//Right Shift A, Bit 0 carries to Bit 7
int carry = ((R_ACC & 1) << 7);
int data = (R_ACC>>1) & 0x7f;
SFR_W(ACC, data | carry);
}
//RRC A /* 1: 0001 0011 */
INLINE void rrc_a(void)
{
//Right Shift A, Bit 0 goes to Carry Flag, Bit 7 of ACC gets set to original Carry Flag
int carry = (R_ACC & 1);
int data = ((R_ACC>>1) & 0x7f) | (GET_CY<<7);
SFR_W(ACC, data);
SET_CY(carry);
}
//SETB C /* 1: 1101 0011 */
INLINE void setb_c(void)
{
SET_CY(1); //Set Carry Flag
}
//SETB bit addr /* 1: 1101 0010 */
INLINE void setb_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,1); //Set Bit at Bit Address
}
//SJMP code addr /* 1: 1000 0000 */
INLINE void sjmp(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
PC = PC + rel_addr; //Update PC
}
//SUBB A, #data /* 1: 1001 0100 */
INLINE void subb_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, data addr /* 1: 1001 0101 */
INLINE void subb_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//RLC A /* 1: 0011 0011 */
INLINE void rlc_a(void)
{
//Left Shift A, Bit 7 goes to Carry Flag, Original Carry Flag goes to Bit 0 of ACC
int carry = ((R_ACC & 0x80) >> 7);
int data = ((R_ACC<<1) & 0xfe) | GET_CY;
SFR_W(ACC, data);
SET_CY(carry);
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
/*******************************************************************************************
NOTE: All registers are accessed directly, instead of using the SFR_R() function for speed
Direct register access is availabe from the R_(register name) macros.. ex: R_ACC for the ACC
with the exception of the PC
********************************************************************************************/
//ACALL code addr /* 1: aaa1 0001 */
INLINE void acall(void)
{
UINT8 op = ROP(PC-1); //Grab the opcode for ACALL
UINT8 addr = ROP_ARG(PC++); //Grab code address byte
PUSH_PC //Save PC to the stack
//Thanks Gerrit for help with this! :)
PC = (PC & 0xf800) | ((op & 0xe0) << 3) | addr;
}
//ADD A, #data /* 1: 0010 0100 */
INLINE void add_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0) //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, data addr /* 1: 0010 0101 */
INLINE void add_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, @R0/@R1 /* 1: 0010 011i */
INLINE void add_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADD A, R0 to R7 /* 1: 0010 1rrr */
INLINE void add_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC + data; //Add data to accumulator
DO_ADD_FLAGS(R_ACC,data,0); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, #data /* 1: 0011 0100 */
INLINE void addc_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, data addr /* 1: 0011 0101 */
INLINE void addc_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, @R0/@R1 /* 1: 0011 011i */
INLINE void addc_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//ADDC A, R0 to R7 /* 1: 0011 1rrr */
INLINE void addc_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC + data + GET_CY; //Add data + carry flag to accumulator
DO_ADD_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//AJMP code addr /* 1: aaa0 0001 */
INLINE void ajmp(void)
{
UINT8 op = ROP(PC-1); //Grab the opcode for AJMP
UINT8 addr = ROP_ARG(PC++); //Grab code address byte
//Thanks Gerrit for help with this! :)
PC = (PC & 0xf800) | ((op & 0xe0) << 3) | addr;
}
//ANL data addr, A /* 1: 0101 0010 */
INLINE void anl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data & R_ACC); //Set data address value to it's value Logical AND with ACC
}
//ANL data addr, #data /* 1: 0101 0011 */
INLINE void anl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata & data); //Set data address value to it's value Logical AND with Data
}
//ANL A, #data /* 1: 0101 0100 */
INLINE void anl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC & data); //Set ACC to value of ACC Logical AND with Data
}
//ANL A, data addr /* 1: 0101 0101 */
INLINE void anl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC & data); //Set ACC to value of ACC Logical AND with Data
}
//ANL A, @RO/@R1 /* 1: 0101 011i */
INLINE void anl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC & data); //Set ACC to value of ACC Logical AND with Data
}
//ANL A, RO to R7 /* 1: 0101 1rrr */
INLINE void anl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC & data); //Set ACC to value of ACC Logical AND with Data
}
//ANL C, bit addr /* 1: 1000 0010 */
INLINE void anl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy & bit) ); //Set Carry flag to Carry Flag Value Logical AND with Bit
}
//ANL C,/bit addr /* 1: 1011 0000 */
INLINE void anl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy & bit) ); //Set Carry flag to Carry Flag Value Logical AND with Complemented Bit
}
//CJNE A, #data, code addr /* 1: 1011 0100 */
INLINE void cjne_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != data) //Jump if values are not equal
PC = PC + rel_addr;
//Set carry flag to 1 if 1st compare value is < 2nd compare value
SET_CY( (R_ACC < data) );
}
//CJNE A, data addr, code addr /* 1: 1011 0101 */
INLINE void cjne_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
UINT8 data = IRAM_R(addr); //Pull value from data address
if(R_ACC != data) //Jump if values are not equal
PC = PC + rel_addr;
//Set carry flag to 1 if 1st compare value is < 2nd compare value
SET_CY( (R_ACC < data) );
}
//CJNE @R0/@R1, #data, code addr /* 1: 1011 011i */
INLINE void cjne_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
UINT8 srcdata = IRAM_IR(R_R(r)); //Grab value pointed to by R0 or R1
if(srcdata != data) //Jump if values are not equal
PC = PC + rel_addr;
//Set carry flag to 1 if 1st compare value is < 2nd compare value
SET_CY( (srcdata < data) );
}
//CJNE R0 to R7, #data, code addr /* 1: 1011 1rrr */
INLINE void cjne_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
UINT8 srcdata = R_R(r); //Grab value of R0 - R7
if(srcdata != data) //Jump if values are not equal
PC = PC + rel_addr;
//Set carry flag to 1 if 1st compare value is < 2nd compare value
SET_CY( (srcdata < data) );
}
//CLR bit addr /* 1: 1100 0010 */
INLINE void clr_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,0); //Clear bit at specified bit address
}
//CLR C /* 1: 1100 0011 */
INLINE void clr_c(void)
{
SET_CY(0); //Clear Carry Flag
}
//CLR A /* 1: 1110 0100 */
INLINE void clr_a(void)
{
SFR_W(ACC,0); //Clear Accumulator
}
//CPL bit addr /* 1: 1011 0010 */
INLINE void cpl_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 data = (~BIT_R(addr))&1;
BIT_W(addr,data); //Complement bit at specified bit address
}
//CPL C /* 1: 1011 0011 */
INLINE void cpl_c(void)
{
UINT8 bit = (~GET_CY)&1; //Complement Carry Flag
SET_CY(bit);
}
//CPL A /* 1: 1111 0100 */
INLINE void cpl_a(void)
{
UINT8 data = ((~R_ACC)&0xff);
SFR_W(ACC,data); //Complement Accumulator
}
//DA A /* 1: 1101 0100 */
INLINE void da_a(void)
{
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//RLC A /* 1: 0011 0011 */
INLINE void rlc_a(void)
{
//Left Shift A, Bit 7 goes to Carry Flag, Original Carry Flag goes to Bit 0 of ACC
int carry = ((R_ACC & 0x80) >> 7);
int data = ((R_ACC<<1) & 0xfe) | GET_CY;
SFR_W(ACC, data);
SET_CY(carry);
}
//RR A /* 1: 0000 0011 */
INLINE void rr_a(void)
{
//Right Shift A, Bit 0 carries to Bit 7
int carry = ((R_ACC & 1) << 7);
int data = (R_ACC>>1) & 0x7f;
SFR_W(ACC, data | carry);
}
//RRC A /* 1: 0001 0011 */
INLINE void rrc_a(void)
{
//Right Shift A, Bit 0 goes to Carry Flag, Bit 7 of ACC gets set to original Carry Flag
int carry = (R_ACC & 1);
int data = ((R_ACC>>1) & 0x7f) | (GET_CY<<7);
SFR_W(ACC, data);
SET_CY(carry);
}
//SETB C /* 1: 1101 0011 */
INLINE void setb_c(void)
{
SET_CY(1); //Set Carry Flag
}
//SETB bit addr /* 1: 1101 0010 */
INLINE void setb_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,1); //Set Bit at Bit Address
}
//SJMP code addr /* 1: 1000 0000 */
INLINE void sjmp(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
PC = PC + rel_addr; //Update PC
}
//SUBB A, #data /* 1: 1001 0100 */
INLINE void subb_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, data addr /* 1: 1001 0101 */
INLINE void subb_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, @R0/@R1 /* 1: 1001 011i */
INLINE void subb_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, R0 to R7 /* 1: 1001 1rrr */
INLINE void subb_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SWAP A /* 1: 1100 0100 */
INLINE void swap_a(void)
{
UINT8 a_nib_lo, a_nib_hi;
a_nib_hi = (R_ACC & 0x0f) << 4; //Grab lo byte of ACC and move to hi
a_nib_lo = (R_ACC & 0xf0) >> 4; //Grab hi byte of ACC and move to lo
SFR_W(ACC, a_nib_hi | a_nib_lo);
}
//XCH A, data addr /* 1: 1100 0101 */
INLINE void xch_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
IRAM_W(addr,oldACC); //Sets data address to old value of ACC
}
//XCH A, @RO/@R1 /* 1: 1100 011i */
INLINE void xch_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data pointed to by R0 or R1
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
IRAM_W(R_R(r),oldACC); //Sets data address to old value of ACC
}
//XCH A, RO to R7 /* 1: 1100 1rrr */
INLINE void xch_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0-R7
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
R_R(r) = oldACC; //Sets data address to old value of ACC
}
//XCHD A, @R0/@R1 /* 1: 1101 011i */
INLINE void xchd_a_ir(int r)
{
UINT8 acc, ir_data;
ir_data = IRAM_IR(R_R(r)); //Grab data pointed to by R0 or R1
acc = R_ACC; //Grab ACC value
SFR_W(ACC, (acc & 0xf0) | (ir_data & 0x0f) ); //Set ACC to lower nibble of data pointed to by R0 or R1
IRAM_W(R_R(r), (ir_data & 0xf0) | (acc & 0x0f) ); //Set data pointed to by R0 or R1 to lower nibble of ACC
}
//XRL data addr, A /* 1: 0110 0010 */
INLINE void xrl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data ^ R_ACC); //Set data address value to it's value Logical XOR with ACC
}
//XRL data addr, #data /* 1: 0110 0011 */
INLINE void xrl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata ^ data); //Set data address value to it's value Logical XOR with Data
}
//XRL A, #data /* 1: 0110 0100 */
INLINE void xrl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC ^ data); //Set ACC to value of ACC Logical XOR with Data
}
//XRL A, data addr /* 1: 0110 0101 */
INLINE void xrl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC ^ data); //Set ACC to value of ACC Logical XOR with Data
}
//XRL A, @R0/@R1 /* 1: 0110 011i */
INLINE void xrl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC ^ data); //Set ACC to value of ACC Logical XOR with Data
}
//XRL A, R0 to R7 /* 1: 0110 1rrr */
INLINE void xrl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC ^ data); //Set ACC to value of ACC Logical XOR with Data
}
/*From several sources, since none said the same thing:
The decimal adjust instruction is associated with the use of the ADD and ADDC instructions.
The eight-bit value in the accumulator is adjusted to form two BCD digits of four bits each.
If the accumulator contents bits 0-3 are greater than 9, OR the AC flag is set, then six is added to
produce a proper BCD digit.
If the carry is set, OR the four high bits 4-7 exceed nine, six is added to the value of these bits.
The carry flag will be set if the result is > 0x99, but not cleared otherwise */
UINT16 new_acc = R_ACC & 0xff;
if(GET_AC || (new_acc & 0x0f) > 0x09)
new_acc += 0x06;
if(GET_CY || ((new_acc & 0xf0) > 0x90) || (new_acc & ~0xff))
new_acc += 0x60;
SFR_W(ACC,new_acc&0xff);
if(new_acc & ~0xff)
SET_CY(1);
}
//DEC A /* 1: 0001 0100 */
INLINE void dec_a(void)
{
SFR_W(ACC,R_ACC-1);
}
//DEC data addr /* 1: 0001 0101 */
INLINE void dec_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data-1);
}
//DEC @R0/@R1 /* 1: 0001 011i */
INLINE void dec_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data-1);
}
//DEC R0 to R7 /* 1: 0001 1rrr */
INLINE void dec_r(int r)
{
R_R(r) = R_R(r) - 1;
}
//DIV AB /* 1: 1000 0100 */
INLINE void div_ab(void)
{
if( R_B == 0 ) {
//Overflow flag is set!
SET_OV(1);
//Really the values are undefined according to the manual, but we'll just leave them as is..
//SFR_W(ACC,0xff);
//SFR_W(B,0xff);
}
else {
int a = (int)R_ACC/R_B;
int b = (int)R_ACC%R_B;
//A gets quotient byte, B gets remainder byte
SFR_W(ACC,a);
SFR_W(B, b);
//Overflow flag is cleared
SET_OV(0);
}
//Carry Flag is always cleared
SET_CY(0);
}
//DJNZ data addr, code addr /* 1: 1101 0101 */
INLINE void djnz_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
IRAM_W(addr,IRAM_R(addr) - 1); //Decrement value contained at data address
if(IRAM_R(addr) != 0) //Branch if contents of data address is not 0
PC = PC + rel_addr;
}
//DJNZ R0 to R7,code addr /* 1: 1101 1rrr */
INLINE void djnz_r(int r)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
R_R(r) = R_R(r) - 1; //Decrement value
if(R_R(r) != 0) //Branch if contents of R0 - R7 is not 0
PC = PC + rel_addr;
}
//INC A /* 1: 0000 0100 */
INLINE void inc_a(void)
{
SFR_W(ACC,R_ACC+1);
}
//INC data addr /* 1: 0000 0101 */
INLINE void inc_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr);
IRAM_W(addr,data+1);
}
//INC @R0/@R1 /* 1: 0000 011i */
INLINE void inc_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r));
IRAM_W(R_R(r),data+1);
}
//INC R0 to R7 /* 1: 0000 1rrr */
INLINE void inc_r(int r)
{
UINT8 data = R_R(r);
R_R(r) = data + 1;
}
//INC DPTR /* 1: 1010 0011 */
INLINE void inc_dptr(void)
{
UINT16 dptr = (R_DPTR)+1;
DPTR_W(dptr);
}
//JB bit addr, code addr /* 1: 0010 0000 */
INLINE void jb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) //If bit set at specified bit address, jump
PC = PC + rel_addr;
}
//JBC bit addr, code addr /* 1: 0001 0000 */
INLINE void jbc(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(BIT_R(addr)) { //If bit set at specified bit address, jump
PC = PC + rel_addr;
BIT_W(addr,0); //Clear Bit also
}
}
//JC code addr /* 1: 0100 0000 */
INLINE void jc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(GET_CY) //Jump if Carry Flag Set
PC = PC + rel_addr;
}
//JMP @A+DPTR /* 1: 0111 0011 */
INLINE void jmp_iadptr(void)
{
PC = R_ACC+R_DPTR;
}
//JNB bit addr, code addr /* 1: 0011 0000 */
INLINE void jnb(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!BIT_R(addr)) //If bit NOT set at specified bit address, jump
PC = PC + rel_addr;
}
//JNC code addr /* 1: 0101 0000 */
INLINE void jnc(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(!GET_CY) //Jump if Carry Flag not set
PC = PC + rel_addr;
}
//JNZ code addr /* 1: 0111 0000 */
INLINE void jnz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC != 0) //Branch if ACC is not 0
PC = PC+rel_addr;
}
//JZ code addr /* 1: 0110 0000 */
INLINE void jz(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
if(R_ACC == 0) //Branch if ACC is 0
PC = PC+rel_addr;
}
//LCALL code addr /* 1: 0001 0010 */
INLINE void lcall(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PUSH_PC
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//LJMP code addr /* 1: 0000 0010 */
INLINE void ljmp(void)
{
UINT8 addr_hi, addr_lo;
addr_hi = ROP_ARG(PC++);
addr_lo = ROP_ARG(PC++);
PC = (UINT16)((addr_hi<<8) | addr_lo);
}
//MOV A, #data /* 1: 0111 0100 */
INLINE void mov_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,data); //Store data to ACC
}
//MOV A, data addr /* 1: 1110 0101 */
INLINE void mov_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
SFR_W(ACC,IRAM_R(addr)); //Store contents of data address to ACC
}
//MOV A,@RO/@R1 /* 1: 1110 011i */
INLINE void mov_a_ir(int r)
{
SFR_W(ACC,IRAM_IR(R_R(r))); //Store contents of address pointed by R0 or R1 to ACC
}
//MOV A,R0 to R7 /* 1: 1110 1rrr */
INLINE void mov_a_r(int r)
{
SFR_W(ACC,R_R(r)); //Store contents of R0 - R7 to ACC
}
//MOV data addr, #data /* 1: 0111 0101 */
INLINE void mov_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_W(addr,data); //Store data to data address location
}
//MOV data addr, data addr /* 1: 1000 0101 */
INLINE void mov_mem_mem(void)
{
//1st address is src, 2nd is dst, but the mov command works as mov dst,src)
UINT8 src,dst;
src = ROP_ARG(PC++); //Grab source data address
dst = ROP_ARG(PC++); //Grab destination data address
IRAM_W(dst,IRAM_R(src)); //Read source address contents and store to destination address
}
//MOV @R0/@R1, #data /* 1: 0111 011i */
INLINE void mov_ir_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
IRAM_IW(R_R(r),data); //Store data to address pointed by R0 or R1
}
//MOV R0 to R7, #data /* 1: 0111 1rrr */
INLINE void mov_r_byte(int r)
{
UINT8 data = ROP_ARG(PC++); //Grab data
R_R(r) = data; //Store to R0 - R7
}
//MOV data addr, @R0/@R1 /* 1: 1000 011i */
INLINE void mov_mem_ir(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,IRAM_IR(R_R(r))); //Store contents pointed to by R0 or R1 to data address
}
//MOV data addr,R0 to R7 /* 1: 1000 1rrr */
INLINE void mov_mem_r(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_R(r)); //Store contents of R0 - R7 to data address
}
//MOV DPTR, #data16 /* 1: 1001 0000 */
INLINE void mov_dptr_byte(void)
{
UINT8 data_hi, data_lo;
data_hi = ROP_ARG(PC++); //Grab hi byte
data_lo = ROP_ARG(PC++); //Grab lo byte
DPTR_W((UINT16)((data_hi<<8)|data_lo)); //Store to DPTR
}
//MOV bit addr, C /* 1: 1001 0010 */
INLINE void mov_bitaddr_c(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,GET_CY); //Store Carry Flag to Bit Address
}
//MOV @R0/@R1, data addr /* 1: 1010 011i */
INLINE void mov_ir_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_IW(R_R(r),IRAM_R(addr)); //Store data from data address to address pointed to by R0 or R1
}
//MOV R0 to R7, data addr /* 1: 1010 1rrr */
INLINE void mov_r_mem(int r)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
R_R(r) = IRAM_R(addr); //Store to R0 - R7
}
//MOV data addr, A /* 1: 1111 0101 */
INLINE void mov_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr,R_ACC); //Store A to data address
}
//MOV @R0/@R1, A /* 1: 1111 011i */
INLINE void mov_ir_a(int r)
{
IRAM_IW(R_R(r),R_ACC); //Store A to location pointed to by R0 or R1
}
//MOV R0 to R7, A /* 1: 1111 1rrr */
INLINE void mov_r_a(int r)
{
R_R(r) = R_ACC; //Store A to R0-R7
}
//MOVC A, @A + PC /* 1: 1000 0011 */
INLINE void movc_a_iapc(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+PC); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOV C, bit addr /* 1: 1010 0010 */
INLINE void mov_c_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
SET_CY( (BIT_R(addr)) ); //Store Bit from Bit Address to Carry Flag
}
//MOVC A, @A + DPTR /* 1: 1001 0011 */
INLINE void movc_a_iadptr(void)
{
UINT8 data;
data = CODEMEM_R(R_ACC+R_DPTR); //Move a byte from CODE(Program) Memory and store to ACC
SFR_W(ACC,data);
}
//MOVX A,@DPTR /* 1: 1110 0000 */
//(Move External Ram 16 bit address to A)
INLINE void movx_a_idptr(void)
{
// UINT8 byte = DATAMEM_R(R_DPTR); //Grab 1 byte from External DATA memory pointed to by dptr
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by dptr
SFR_W(ACC,byte); //Store to ACC
}
//MOVX A, @R0/@R1 /* 1: 1110 001i */
//(Move External Ram 8 bit address to A)
INLINE void movx_a_ir(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
UINT8 byte = DATAMEM_R(addr); //Grab 1 byte from External DATA memory pointed to by address
SFR_W(ACC,byte); //Store to ACC
}
//MOVX @DPTR,A /* 1: 1111 0000 */
//(Move A to External Ram 16 bit address)
INLINE void movx_idptr_a(void)
{
// DATAMEM_W(R_DPTR, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
UINT32 addr = ERAM_ADDR(R_DPTR,0xFFFF);
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address pointed to by DPTR
}
//MOVX @R0/@R1,A /* 1: 1111 001i */
//(Move A to External Ram 8 bit address)
INLINE void movx_ir_a(int r)
{
UINT32 addr = ERAM_ADDR(R_R(r),0xFF); //Grab address by reading location pointed to by R0 or R1
DATAMEM_W(addr, R_ACC); //Store ACC to External DATA memory address
}
//MUL AB /* 1: 1010 0100 */
INLINE void mul_ab(void)
{
UINT16 result = R_ACC * R_B;
//A gets lo bits, B gets hi bits of result
SFR_W(B,(UINT8)((result & 0xFF00) >> 8));
SFR_W(ACC,(UINT8)(result & 0x00FF));
//Set flags
SET_OV( ((result & 0x100) >> 8) ); //Set/Clear Overflow Flag if result > 255
SET_CY(0); //Carry Flag always cleared
}
//NOP /* 1: 0000 0000 */
INLINE void nop(void)
{
}
//ORL data addr, A /* 1: 0100 0010 */
INLINE void orl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data | R_ACC); //Set data address value to it's value Logical OR with ACC
}
//ORL data addr, #data /* 1: 0100 0011 */
INLINE void orl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata | data); //Set data address value to it's value Logical OR with Data
}
//ORL A, #data /* 1: 0100 0100 */
INLINE void orl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, data addr /* 1: 0100 0101 */
INLINE void orl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, @RO/@R1 /* 1: 0100 011i */
INLINE void orl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL A, RO to R7 /* 1: 0100 1rrr */
INLINE void orl_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
SFR_W(ACC,R_ACC | data); //Set ACC to value of ACC Logical OR with Data
}
//ORL C, bit addr /* 1: 0111 0010 */
INLINE void orl_c_bitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Bit
}
//ORL C, /bit addr /* 1: 1010 0000 */
INLINE void orl_c_nbitaddr(void)
{
int cy = GET_CY;
UINT8 addr = ROP_ARG(PC++); //Grab bit address
UINT8 bit = BIT_R(addr); //Grab bit data from bit address
bit = ((~bit)&1); //Complement bit
SET_CY( (cy | bit) ); //Set Carry flag to Carry Flag Value Logical OR with Complemented Bit
}
//POP data addr /* 1: 1101 0000 */
INLINE void pop(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
IRAM_W(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - IRAM_IR needed to access upper 128 bytes of stack
//IRAM_IW(addr, IRAM_IR(R_SP)); //Store to contents of data addr, data pointed to by Stack - doesn't work, sfr's are not restored this way and it's not an indirect access anyway
SFR_W(SP,R_SP-1); //Decrement SP
}
//PUSH data addr /* 1: 1100 0000 */
INLINE void push(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 tmpSP = R_SP; //Grab and Increment Stack Pointer
tmpSP++; // ""
SFR_W(SP,tmpSP); // ""
if (tmpSP == R_SP) //Ensure it was able to write to new stack location
IRAM_IW(tmpSP, IRAM_R(addr)); //Store to stack contents of data address - IRAM_IW needed to store to upper 128 bytes of stack, however, can't use IRAM_IR because that won't store the sfrs and it's not an indirect access anyway
}
//RET /* 1: 0010 0010 */
INLINE void ret(void)
{
POP_PC
}
//RETI /* 1: 0011 0010 */
INLINE void reti(void)
{
POP_PC
CLEAR_CURRENT_IRQ
}
//RL A /* 1: 0010 0011 */
INLINE void rl_a(void)
{
//Left Shift A, Bit 7 carries to Bit 0
int carry = ((R_ACC & 0x80) >> 7);
int data = (R_ACC<<1) & 0xfe;
SFR_W(ACC, data | carry);
}
//RLC A /* 1: 0011 0011 */
INLINE void rlc_a(void)
{
//Left Shift A, Bit 7 goes to Carry Flag, Original Carry Flag goes to Bit 0 of ACC
int carry = ((R_ACC & 0x80) >> 7);
int data = ((R_ACC<<1) & 0xfe) | GET_CY;
SFR_W(ACC, data);
SET_CY(carry);
}
//RR A /* 1: 0000 0011 */
INLINE void rr_a(void)
{
//Right Shift A, Bit 0 carries to Bit 7
int carry = ((R_ACC & 1) << 7);
int data = (R_ACC>>1) & 0x7f;
SFR_W(ACC, data | carry);
}
//RRC A /* 1: 0001 0011 */
INLINE void rrc_a(void)
{
//Right Shift A, Bit 0 goes to Carry Flag, Bit 7 of ACC gets set to original Carry Flag
int carry = (R_ACC & 1);
int data = ((R_ACC>>1) & 0x7f) | (GET_CY<<7);
SFR_W(ACC, data);
SET_CY(carry);
}
//SETB C /* 1: 1101 0011 */
INLINE void setb_c(void)
{
SET_CY(1); //Set Carry Flag
}
//SETB bit addr /* 1: 1101 0010 */
INLINE void setb_bitaddr(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab bit address
BIT_W(addr,1); //Set Bit at Bit Address
}
//SJMP code addr /* 1: 1000 0000 */
INLINE void sjmp(void)
{
INT8 rel_addr = ROP_ARG(PC++); //Grab relative code address
PC = PC + rel_addr; //Update PC
}
//SUBB A, #data /* 1: 1001 0100 */
INLINE void subb_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, data addr /* 1: 1001 0101 */
INLINE void subb_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, @R0/@R1 /* 1: 1001 011i */
INLINE void subb_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from memory pointed to by R0 or R1
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SUBB A, R0 to R7 /* 1: 1001 1rrr */
INLINE void subb_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0 - R7
UINT8 result = R_ACC - data - GET_CY; //Subtract data & carry flag from accumulator
DO_SUB_FLAGS(R_ACC,data,GET_CY); //Set Flags
SFR_W(ACC,result); //Store 8 bit result of addtion in ACC
}
//SWAP A /* 1: 1100 0100 */
INLINE void swap_a(void)
{
UINT8 a_nib_lo, a_nib_hi;
a_nib_hi = (R_ACC & 0x0f) << 4; //Grab lo byte of ACC and move to hi
a_nib_lo = (R_ACC & 0xf0) >> 4; //Grab hi byte of ACC and move to lo
SFR_W(ACC, a_nib_hi | a_nib_lo);
}
//XCH A, data addr /* 1: 1100 0101 */
INLINE void xch_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
IRAM_W(addr,oldACC); //Sets data address to old value of ACC
}
//XCH A, @RO/@R1 /* 1: 1100 011i */
INLINE void xch_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data pointed to by R0 or R1
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
IRAM_W(R_R(r),oldACC); //Sets data address to old value of ACC
}
//XCH A, RO to R7 /* 1: 1100 1rrr */
INLINE void xch_a_r(int r)
{
UINT8 data = R_R(r); //Grab data from R0-R7
UINT8 oldACC = R_ACC; //Hold value of ACC
SFR_W(ACC,data); //Sets ACC to data
R_R(r) = oldACC; //Sets data address to old value of ACC
}
//XCHD A, @R0/@R1 /* 1: 1101 011i */
INLINE void xchd_a_ir(int r)
{
UINT8 acc, ir_data;
ir_data = IRAM_IR(R_R(r)); //Grab data pointed to by R0 or R1
acc = R_ACC; //Grab ACC value
SFR_W(ACC, (acc & 0xf0) | (ir_data & 0x0f) ); //Set ACC to lower nibble of data pointed to by R0 or R1
IRAM_W(R_R(r), (ir_data & 0xf0) | (acc & 0x0f) ); //Set data pointed to by R0 or R1 to lower nibble of ACC
}
//XRL data addr, A /* 1: 0110 0010 */
INLINE void xrl_mem_a(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,data ^ R_ACC); //Set data address value to it's value Logical XOR with ACC
}
//XRL data addr, #data /* 1: 0110 0011 */
INLINE void xrl_mem_byte(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = ROP_ARG(PC++); //Grab data
UINT8 srcdata = IRAM_R(addr); //Grab data from data address
IRAM_W(addr,srcdata ^ data); //Set data address value to it's value Logical XOR with Data
}
//XRL A, #data /* 1: 0110 0100 */
INLINE void xrl_a_byte(void)
{
UINT8 data = ROP_ARG(PC++); //Grab data
SFR_W(ACC,R_ACC ^ data); //Set ACC to value of ACC Logical XOR with Data
}
//XRL A, data addr /* 1: 0110 0101 */
INLINE void xrl_a_mem(void)
{
UINT8 addr = ROP_ARG(PC++); //Grab data address
UINT8 data = IRAM_R(addr); //Grab data from data address
SFR_W(ACC,R_ACC ^ data); //Set ACC to value of ACC Logical XOR with Data
}
//XRL A, @R0/@R1 /* 1: 0110 011i */
INLINE void xrl_a_ir(int r)
{
UINT8 data = IRAM_IR(R_R(r)); //Grab data from address R0 or R1 points to
SFR_W(ACC,R_ACC ^ data); //Set ACC to value of ACC Logical XOR with Data
}