int cpu::cpu_emulate(int ciclos){
UINT8 op,b,cbop;
UINT32 i;
UINT32 clen = 10;
UINT16 w;
static cpuReg acc;
i = ciclos;
//next:
while((!CPU->IME) && i > 0){
mt.lock();
op = FETCH;
ciclos = cycles_table[op];
switch(op)
{
case 0x00: /* NOP */
case 0x40: /* LD B,B */
case 0x49: /* LD C,C */
case 0x52: /* LD D,D */
case 0x5B: /* LD E,E */
case 0x64: /* LD H,H */
case 0x6D: /* LD L,L */
case 0x7F: /* LD A,A */
break;
case 0x41: /* LD B,C */
B = C; break;
case 0x42: /* LD B,D */
B = D; break;
case 0x43: /* LD B,E */
B = E; break;
case 0x44: /* LD B,H */
B = H; break;
case 0x45: /* LD B,L */
B = L; break;
case 0x46: /* LD B,(HL) */
B = memoria::readByte(xHL); break;
case 0x47: /* LD B,A */
B = A; break;
case 0x48: /* LD C,B */
C = B; break;
case 0x4A: /* LD C,D */
C = D; break;
case 0x4B: /* LD C,E */
C = E; break;
case 0x4C: /* LD C,H */
C = H; break;
case 0x4D: /* LD C,L */
C = L; break;
case 0x4E: /* LD C,(HL) */
C = memoria::readByte(xHL); break;
case 0x4F: /* LD C,A */
C = A; break;
case 0x50: /* LD D,B */
D = B; break;
case 0x51: /* LD D,C */
D = C; break;
case 0x53: /* LD D,E */
D = E; break;
case 0x54: /* LD D,H */
D = H; break;
case 0x55: /* LD D,L */
D = L; break;
case 0x56: /* LD D,(HL) */
D = memoria::readByte(xHL); break;
case 0x57: /* LD D,A */
D = A; break;
case 0x58: /* LD E,B */
E = B; break;
case 0x59: /* LD E,C */
E = C; break;
case 0x5A: /* LD E,D */
E = D; break;
case 0x5C: /* LD E,H */
E = H; break;
case 0x5D: /* LD E,L */
E = L; break;
case 0x5E: /* LD E,(HL) */
E = memoria::readByte(xHL); break;
case 0x5F: /* LD E,A */
E = A; break;
case 0x60: /* LD H,B */
H = B; break;
case 0x61: /* LD H,C */
H = C; break;
case 0x62: /* LD H,D */
H = D; break;
case 0x63: /* LD H,E */
H = E; break;
case 0x65: /* LD H,L */
H = L; break;
case 0x66: /* LD H,(HL) */
H = memoria::readByte(xHL); break;
case 0x67: /* LD H,A */
H = A; break;
case 0x68: /* LD L,B */
L = B; break;
case 0x69: /* LD L,C */
L = C; break;
case 0x6A: /* LD L,D */
L = D; break;
case 0x6B: /* LD L,E */
L = E; break;
case 0x6C: /* LD L,H */
L = H; break;
case 0x6E: /* LD L,(HL) */
L = memoria::readByte(xHL); break;
case 0x6F: /* LD L,A */
L = A; break;
case 0x70: /* LD (HL),B */
b = B; goto __LD_HL;
case 0x71: /* LD (HL),C */
b = C; goto __LD_HL;
case 0x72: /* LD (HL),D */
b = D; goto __LD_HL;
case 0x73: /* LD (HL),E */
b = E; goto __LD_HL;
case 0x74: /* LD (HL),H */
b = H; goto __LD_HL;
case 0x75: /* LD (HL),L */
b = L; goto __LD_HL;
case 0x77: /* LD (HL),A */
b = A;
__LD_HL:
memoria::writeByte(xHL,b);
break;
case 0x78: /* LD A,B */
A = B; break;
case 0x79: /* LD A,C */
A = C; break;
case 0x7A: /* LD A,D */
A = D; break;
case 0x7B: /* LD A,E */
A = E; break;
case 0x7C: /* LD A,H */
A = H; break;
case 0x7D: /* LD A,L */
A = L; break;
case 0x7E: /* LD A,(HL) */
A = memoria::readByte(xHL); break;
case 0x01: /* LD BC,imm */
CPU->BC.w = memoria::readWord(xPC); CPU->PC += 2; break;
case 0x11: /* LD DE,imm */
CPU->DE.w = memoria::readWord(xPC); CPU->PC += 2; break;
case 0x21: /* LD HL,imm */
CPU->HL.w = memoria::readWord(xPC); CPU->PC += 2; break;
case 0x31: /* LD SP,imm */
CPU->SP = memoria::readWord(xPC); CPU->PC += 2; break;
case 0x02: /* LD (BC),A */
memoria::writeByte(CPU->BC.w, A); break;
case 0x0A: /* LD A,(BC) */
A = memoria::readByte(CPU->BC.w); break;
case 0x12: /* LD (DE),A */
memoria::writeByte(CPU->BC.w, A); break;
case 0x1A: /* LD A,(DE) */
A = memoria::readByte(CPU->DE.w); break;
case 0x22: /* LDI (HL),A */
memoria::writeByte(xHL, A); CPU->HL.w++; break;
case 0x2A: /* LDI A,(HL) */
A = memoria::readByte(xHL); CPU->HL.w++; break;
case 0x32: /* LDD (HL),A */
memoria::writeByte(xHL, A); CPU->HL.w--; break;
case 0x3A: /* LDD A,(HL) */
A = memoria::readByte(xHL); CPU->HL.w--; break;
case 0x06: /* LD B,imm */
B = FETCH; break;
case 0x0E: /* LD C,imm */
C = FETCH; break;
case 0x16: /* LD D,imm */
D = FETCH; break;
case 0x1E: /* LD E,imm */
E = FETCH; break;
case 0x26: /* LD H,imm */
H = FETCH; break;
case 0x2E: /* LD L,imm */
L = FETCH; break;
case 0x36: /* LD (HL),imm */
b = FETCH; memoria::writeByte(xHL, b); break;
case 0x3E: /* LD A,imm */
A = FETCH; break;
case 0x08: /* LD (imm),CPU->SP */
memoria::writeWord(memoria::readWord(xPC), CPU->SP); CPU->PC += 2; break;
case 0xEA: /* LD (imm),A */
memoria::writeByte(memoria::readWord(xPC), A); CPU->PC += 2; break;
case 0xF8: /* LD HL,CPU->SP+imm */
b = FETCH; LDHLSP(b); break;
case 0xF9: /* LD CPU->SP,HL */
CPU->SP = CPU->HL.w; break;
case 0xFA: /* LD A,(imm) */
A = memoria::readByte(memoria::readWord(xPC)); CPU->PC += 2; break;
ALU_CASES(0x80, 0xC6, ADD, __ADD)
ALU_CASES(0x88, 0xCE, ADC, __ADC)
ALU_CASES(0x90, 0xD6, SUB, __SUB)
ALU_CASES(0x98, 0xDE, SBC, __SBC)
ALU_CASES(0xA0, 0xE6, AND, __AND)
ALU_CASES(0xA8, 0xEE, XOR, __XOR)
ALU_CASES(0xB0, 0xF6, OR, __OR)
ALU_CASES(0xB8, 0xFE, CP, __CP)
case 0x09: /* ADD HL,BC */
w = CPU->BC.w; goto __ADDW;
case 0x19: /* ADD HL,DE */
w = CPU->DE.w; goto __ADDW;
case 0x39: /* ADD HL,CPU->SP */
w = CPU->SP; goto __ADDW;
case 0x29: /* ADD HL,HL */
w = CPU->HL.w;
__ADDW:
ADDW(w);
break;
case 0x04: /* INC B */
INC(B); break;
case 0x0C: /* INC C */
INC(C); break;
case 0x14: /* INC D */
INC(D); break;
case 0x1C: /* INC E */
INC(E); break;
case 0x24: /* INC H */
INC(H); break;
case 0x2C: /* INC L */
INC(L); break;
case 0x34: /* INC (HL) */
b = memoria::readByte(xHL);
INC(b);
memoria::writeByte(xHL, b);
break;
case 0x3C: /* INC A */
INC(A); break;
case 0x03: /* INC BC */
INCW(CPU->BC.w); break;
case 0x13: /* INC DE */
INCW(CPU->DE.w); break;
case 0x23: /* INC HL */
INCW(CPU->HL.w); break;
case 0x33: /* INC CPU->SP */
INCW(CPU->SP); break;
case 0x05: /* DEC B */
DEC(B); break;
case 0x0D: /* DEC C */
DEC(C); break;
case 0x15: /* DEC D */
DEC(D); break;
case 0x1D: /* DEC E */
DEC(E); break;
case 0x25: /* DEC H */
DEC(H); break;
case 0x2D: /* DEC L */
DEC(L); break;
case 0x35: /* DEC (HL) */
b = memoria::readByte(xHL);
DEC(b);
memoria::writeByte(xHL, b);
break;
case 0x3D: /* DEC A */
DEC(A); break;
case 0x0B: /* DEC BC */
DECW(CPU->BC.w); break;
case 0x1B: /* DEC DE */
DECW(CPU->DE.w); break;
case 0x2B: /* DEC HL */
DECW(CPU->HL.w); break;
case 0x3B: /* DEC CPU->SP */
DECW(CPU->SP); break;
case 0x07: /* RLCA */
RLCA(A); break;
case 0x0F: /* RRCA */
RRCA(A); break;
case 0x17: /* RLA */
RLA(A); break;
case 0x1F: /* RRA */
RRA(A); break;
case 0x27: /* DAA */
DAA; break;
case 0x2F: /* CPL */
CPL(A); break;
case 0x18: /* JR */
__JR:
JR; break;
case 0x20: /* JR NZ */
if (!(F&FZ)) goto __JR; NOJR; break;
case 0x28: /* JR Z */
if (F&FZ) goto __JR; NOJR; break;
case 0x30: /* JR NC */
if (!(F&FC)) goto __JR; NOJR; break;
case 0x38: /* JR C */
if (F&FC) goto __JR; NOJR; break;
case 0xC3: /* JP */
__JP:
JP; break;
case 0xC2: /* JP NZ */
if (!(F&FZ)) goto __JP; NOJP; break;
case 0xCA: /* JP Z */
if (F&FZ) goto __JP; NOJP; break;
case 0xD2: /* JP NC */
if (!(F&FC)) goto __JP; NOJP; break;
case 0xDA: /* JP C */
if (F&FC) goto __JP; NOJP; break;
case 0xE9: /* JP HL */
CPU->PC = CPU->HL.w; break;
case 0xC9: /* RET */
__RET:
RET; break;
case 0xC0: /* RET NZ */
if (!(F&FZ)) goto __RET; NORET; break;
case 0xC8: /* RET Z */
if (F&FZ) goto __RET; NORET; break;
case 0xD0: /* RET NC */
if (!(F&FC)) goto __RET; NORET; break;
case 0xD8: /* RET C */
if (F&FC) goto __RET; NORET; break;
case 0xD9: /* RETI */
CPU->IME = CPU->IMA = 1; goto __RET;
case 0xCD: /* CALL */
__CALL:
CALL; break;
case 0xC4: /* CALL NZ */
if (!(F&FZ)) goto __CALL; NOCALL; break;
case 0xCC: /* CALL Z */
if (F&FZ) goto __CALL; NOCALL; break;
case 0xD4: /* CALL NC */
if (!(F&FC)) goto __CALL; NOCALL; break;
case 0xDC: /* CALL C */
if (F&FC) goto __CALL; NOCALL; break;
case 0xC7: /* RST 0 */
b = 0x00; goto __RST;
case 0xCF: /* RST 8 */
b = 0x08; goto __RST;
case 0xD7: /* RST 10 */
b = 0x10; goto __RST;
case 0xDF: /* RST 18 */
b = 0x18; goto __RST;
case 0xE7: /* RST 20 */
b = 0x20; goto __RST;
case 0xEF: /* RST 28 */
b = 0x28; goto __RST;
case 0xF7: /* RST 30 */
b = 0x30; goto __RST;
case 0xFF: /* RST 38 */
b = 0x38;
__RST:
RST(b); break;
case 0xC1: /* POP BC */
POP(CPU->BC.w); break;
case 0xC5: /* PUSH BC */
PUSH(CPU->BC.w); break;
case 0xD1: /* POP DE */
POP(CPU->DE.w); break;
case 0xD5: /* PUSH DE */
PUSH(CPU->DE.w); break;
case 0xE1: /* POP HL */
POP(CPU->HL.w); break;
case 0xE5: /* PUSH HL */
PUSH(CPU->HL.w); break;
case 0xF1: /* POP AF */
POP(CPU->AF.w); break;
case 0xF5: /* PUSH AF */
PUSH(CPU->AF.w); break;
case 0xE8: /* ADD CPU->SP,imm */
b = FETCH; ADDSP(b); break;
case 0xF3: /* DI */
DI; break;
case 0xFB: /* EI */
EI; break;
case 0x37: /* SCF */
SCF; break;
case 0x3F: /* CCF */
CCF; break;
case 0x10: /* STOP */
break; //to do//
case 0x76: /* HALT */
CPU->halt = 1;
break;
case 0xCB: /* CB prefix */
cbop = FETCH;
clen = cb_cycles_table[cbop];
switch (cbop)
{
CB_REG_CASES(B, 0);
CB_REG_CASES(C, 1);
CB_REG_CASES(D, 2);
CB_REG_CASES(E, 3);
CB_REG_CASES(H, 4);
CB_REG_CASES(L, 5);
CB_REG_CASES(A, 7);
default:
b = memoria::readByte(xHL);
switch(cbop)
{
CB_REG_CASES(b, 6);
}
if ((cbop & 0xC0) != 0x40) /* exclude BIT */
memoria::writeByte(xHL, b);
break;
}
break;
default:
printf("erro"); break;
}
clen <<= 1;
i -= clen;
emit onEndProcess((UINT32)op);
mt.unlock();
//msleep(600);
}
//if(i >0) goto next;
wt.wait(&mt);
return ciclos-i;
}
/*RRCA*/
static void op_0x0f(Z80EX_CONTEXT *cpu)
{
RRCA();
T_WAIT_UNTIL(4);
return;
}