/*LD (@),SP*/
static void op_ED_0x73(Z80EX_CONTEXT *cpu)
{
temp_addr.b.l=READ_OP();
temp_addr.b.h=READ_OP();
LD_RP_TO_ADDR_MPTR_16(temp_word.w,SP, temp_addr.w);
WRITE_MEM(temp_addr.w,temp_word.b.l,10);
WRITE_MEM(temp_addr.w+1,temp_word.b.h,13);
T_WAIT_UNTIL(16);
return;
}
/*LD (@),HL*/
static void op_ED_0x63(void)
{
temp_addr.b.l=READ_OP();
temp_addr.b.h=READ_OP();
LD_RP_TO_ADDR_MPTR_16(temp_word.w,HL, temp_addr.w);
WRITE_MEM(temp_addr.w,temp_word.b.l,10);
WRITE_MEM(temp_addr.w+1,temp_word.b.h,13);
T_WAIT_UNTIL(16);
return;
}
/*EX (SP),HL*/
static void op_0xe3(Z80EX_CONTEXT *cpu)
{
READ_MEM(temp_word.b.l,(SP),4);
READ_MEM(temp_word.b.h,(SP+1),7);
EX_MPTR(temp_word.w,HL);
WRITE_MEM((SP),temp_word.b.l,11);
WRITE_MEM((SP+1),temp_word.b.h,14);
T_WAIT_UNTIL(19);
return;
}
/*LD (HL),E*/
static void op_0x73(Z80EX_CONTEXT *cpu)
{
LD(temp_byte,E);
WRITE_MEM((HL),temp_byte,4);
T_WAIT_UNTIL(7);
return;
}
/*LD (BC),A*/
static void op_0x02(Z80EX_CONTEXT *cpu)
{
LD_A_TO_ADDR_MPTR(temp_byte,A, (BC));
WRITE_MEM((BC),temp_byte,4);
T_WAIT_UNTIL(7);
return;
}
/*LD (HL),#*/
static void op_0x36(Z80EX_CONTEXT *cpu)
{
temp_byte=READ_OP();
LD(temp_byte,temp_byte);
WRITE_MEM((HL),temp_byte,7);
T_WAIT_UNTIL(10);
return;
}
/*DEC (HL)*/
static void op_0x35(Z80EX_CONTEXT *cpu)
{
READ_MEM(temp_byte,(HL),4);
DEC(temp_byte);
WRITE_MEM((HL),temp_byte,8);
T_WAIT_UNTIL(11);
return;
}
/*LD (@),A*/
static void op_0x32(Z80EX_CONTEXT *cpu)
{
temp_addr.b.l=READ_OP();
temp_addr.b.h=READ_OP();
LD_A_TO_ADDR_MPTR(temp_byte,A, temp_addr.w);
WRITE_MEM(temp_addr.w,temp_byte,10);
T_WAIT_UNTIL(13);
return;
}
/*LD (IX+$),A*/
static void op_DD_0x77(Z80EX_CONTEXT *cpu)
{
temp_byte=READ_OP();
temp_byte_s=(temp_byte & 0x80)? -(((~temp_byte) & 0x7f)+1): temp_byte;
MEMPTR=(IX+temp_byte_s);
LD(temp_byte,A);
WRITE_MEM((IX+temp_byte_s),temp_byte,12);
T_WAIT_UNTIL(15);
return;
}
/*
** Opcode 0xDD/0xFD
** IX/IY related instructions
*/
UBYTE Z80::indexInstructions(UWORD& I, UBYTE origOpcode)
{
UBYTE opcode = READ_MEM(PC++);
switch (opcode) {
case 0x8E: ADD8(A, READ_MEM(I + READ_MEM(PC++)), F_C); return 19;
case 0x86: ADD8(A, READ_MEM(I + READ_MEM(PC++)), 0); return 19;
case 0x09: ADD16(I, BC); return 15;
case 0x19: ADD16(I, DE); return 15;
case 0x29: ADD16(I, I); return 15;
case 0x39: ADD16(I, SP); return 15;
case 0xA6: AND(A, READ_MEM(I + READ_MEM(PC++))); return 19;
case 0xBE: CP(A, READ_MEM(I + READ_MEM(PC++))); return 19;
case 0x96: SUB8(A, READ_MEM(I + READ_MEM(PC++)), 0); return 19;
case 0xAE: XOR(A, READ_MEM(I + READ_MEM(PC++))); return 19;
case 0x35: {
UBYTE v = I + READ_MEM(PC++); UBYTE s = READ_MEM(v); DEC8(s); WRITE_MEM(v, s);
} return 23;
case 0x2B: DEC16(I); return 10;
case 0xE3: { UWORD s = READ_MEM16(SP); EX(s, I); WRITE_MEM16(SP, s); } return 23;
case 0x23: INC16(I); return 10;
case 0x34: {
UBYTE v = I + READ_MEM(PC++); UBYTE s = READ_MEM(v); INC8(s); WRITE_MEM(v, s);
} return 23;
/* JP */
case 0xE9: PC = READ_MEM16(I); return 8;
/* LD */
case 0x7E: A = READ_MEM(I + READ_MEM(PC++)); return 19;
case 0x46: B = READ_MEM(I + READ_MEM(PC++)); return 19;
case 0x4E: C = READ_MEM(I + READ_MEM(PC++)); return 19;
case 0x56: D = READ_MEM(I + READ_MEM(PC++)); return 19;
case 0x5E: E = READ_MEM(I + READ_MEM(PC++)); return 19;
case 0x66: H = READ_MEM(I + READ_MEM(PC++)); return 19;
case 0x6E: L = READ_MEM(I + READ_MEM(PC++)); return 19;
case 0xF9: SP = I; return 19;
case 0x2A: I = READ_MEM16(READ_MEM16(PC)); PC += 2; return 20;
case 0x21: I = READ_MEM16(PC); PC += 2; return 14;
case 0x22: WRITE_MEM16(READ_MEM16(PC), I); PC += 2; return 20;
case 0x70 + 7: WRITE_MEM(I + READ_MEM(PC++), A); return 19;
case 0x70 + 0: WRITE_MEM(I + READ_MEM(PC++), B); return 19;
case 0x70 + 1: WRITE_MEM(I + READ_MEM(PC++), C); return 19;
case 0x70 + 2: WRITE_MEM(I + READ_MEM(PC++), D); return 19;
case 0x70 + 3: WRITE_MEM(I + READ_MEM(PC++), E); return 19;
case 0x70 + 4: WRITE_MEM(I + READ_MEM(PC++), H); return 19;
case 0x70 + 5: WRITE_MEM(I + READ_MEM(PC++), L); return 19;
case 0x36: WRITE_MEM(I + READ_MEM(PC), READ_MEM(PC + 1)); PC += 2; return 19;
case 0xB6: OR(A, READ_MEM(I + READ_MEM(PC++))); return 19;
case 0xE1: I = pop16(); return 14;
case 0xE5: push16(I); return 15;
case 0x9E: SUB8(A, READ_MEM(I + READ_MEM(PC++)), F_C); return 19;
case 0xCB: { // DD CB
UBYTE arg = READ_MEM(PC++);
UBYTE extOpcode = READ_MEM(PC++);
switch (extOpcode) {
#define RES_I(b) case 0x86 + 8 * b: { UBYTE s = READ_MEM(I + arg); \
RES(s, b); WRITE_MEM(I + arg, s); } return 23;
#define SET_I(b) case 0xC6 + 8 * b: { UBYTE s = READ_MEM(I + arg); \
SET(s, b); WRITE_MEM(I + arg, s); } return 23;
#define BIT_I(b) case 0x46 + 8 * b: { UBYTE s = READ_MEM(I + arg); \
BIT(s, b); WRITE_MEM(I + arg, s); } return 23;
/* BIT b,(I+N) */
BIT_I(0); BIT_I(1); BIT_I(2); BIT_I(3);
BIT_I(4); BIT_I(5); BIT_I(6); BIT_I(7);
/* RES b,(I+N) */
RES_I(0); RES_I(1); RES_I(2); RES_I(3);
RES_I(4); RES_I(5); RES_I(6); RES_I(7);
/* SET b,(I+N) */
SET_I(0); SET_I(1); SET_I(2); SET_I(3);
SET_I(4); SET_I(5); SET_I(6); SET_I(7);
case 0x16: { /* RL (I+N) */
UBYTE s = READ_MEM(I + arg); RL(s); WRITE_MEM(I + arg, s);
} return 23;
case 0x06: { /* RLC (I+N) */
UBYTE s = READ_MEM(I + arg); RLC(s); WRITE_MEM(I + arg, s);
} return 23;
case 0x1E: { /* RR (I+N) */
UBYTE s = READ_MEM(I + arg); RR(s); WRITE_MEM(I + arg, s);
} return 23;
case 0x0E: { /* RRC (I+N) */
UBYTE s = READ_MEM(I + arg); RRC(s); WRITE_MEM(I + arg, s);
} return 23;
case 0x26: { /* SLA (I+N) */
UBYTE s = READ_MEM(I + arg); SLA(s); WRITE_MEM(I + arg, s);
} return 23;
case 0x2E: { /* SRA (I+N) */
UBYTE s = READ_MEM(I + arg); SRA(s); WRITE_MEM(I + arg, s);
} return 23;
case 0x36: { /* SLL (I+N) */
UBYTE s = READ_MEM(I + arg); SLL(s); WRITE_MEM(I + arg, s);
} return 23;
case 0x3E: { /* SRL (I+N) */
UBYTE s = READ_MEM(I + arg); SRL(s); WRITE_MEM(I + arg, s);
} return 23;
default:
std::cout << std::hex << "Unknown extended opcode ("
<< origOpcode << ":" << opcode << "): " << static_cast<int>(extOpcode) << std::endl;
return 0;
}
} break;
default:
std::cout << std::hex << "Unknown extended opcode ("
<< origOpcode << "): " << static_cast<int>(opcode) << std::endl;
break;
}
return 0;
}