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RACE/cz80_op.inc
twinaphex e61e082830 Change to C comments
2020-01-07 12:03:08 +01:00

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/********************************************************************************/
/* */
/* CZ80 opcode include source file */
/* C Z80 emulator version 0.92 */
/* Copyright 2004-2005 Stéphane Dallongeville */
/* */
/********************************************************************************/
#if CZ80_USE_JUMPTABLE
goto *JumpTable[Opcode];
#else
switch (Opcode)
{
#endif
/* 8 BITS LOAD */
OP(0x00): /* NOP */
OP(0x40): // LD B,B
OP(0x49): // LD C,C
OP(0x52): // LD D,D
OP(0x5b): // LD E,E
OP(0x64): // LD H,H
OP(0x6d): // LD L,L
OP(0x7f): // LD A,A
OP_NOP:
RET(4)
OP(0x41): // LD B,C
OP(0x42): // LD B,D
OP(0x43): // LD B,E
OP(0x44): // LD B,H
OP(0x45): // LD B,L
OP(0x47): // LD B,A
OP(0x48): // LD C,B
OP(0x4a): // LD C,D
OP(0x4b): // LD C,E
OP(0x4c): // LD C,H
OP(0x4d): // LD C,L
OP(0x4f): // LD C,A
OP(0x50): // LD D,B
OP(0x51): // LD D,C
OP(0x53): // LD D,E
OP(0x54): // LD D,H
OP(0x55): // LD D,L
OP(0x57): // LD D,A
OP(0x58): // LD E,B
OP(0x59): // LD E,C
OP(0x5a): // LD E,D
OP(0x5c): // LD E,H
OP(0x5d): // LD E,L
OP(0x5f): // LD E,A
OP(0x60): // LD H,B
OP(0x61): // LD H,C
OP(0x62): // LD H,D
OP(0x63): // LD H,E
OP(0x65): // LD H,L
OP(0x67): // LD H,A
OP(0x68): // LD L,B
OP(0x69): // LD L,C
OP(0x6a): // LD L,D
OP(0x6b): // LD L,E
OP(0x6c): // LD L,H
OP(0x6f): // LD L,A
OP(0x78): // LD A,B
OP(0x79): // LD A,C
OP(0x7a): // LD A,D
OP(0x7b): // LD A,E
OP(0x7c): // LD A,H
OP(0x7d): // LD A,L
OP_LD_R_R:
zR8((Opcode >> 3) & 7) = zR8(Opcode & 7);
RET(4)
OP(0x06): // LD B,#imm
OP(0x0e): // LD C,#imm
OP(0x16): // LD D,#imm
OP(0x1e): // LD E,#imm
OP(0x26): // LD H,#imm
OP(0x2e): // LD L,#imm
OP(0x3e): // LD A,#imm
OP_LD_R_imm:
FETCH_BYTE(zR8(Opcode >> 3));
RET(7)
OP(0x46): // LD B,(HL)
OP(0x4e): // LD C,(HL)
OP(0x56): // LD D,(HL)
OP(0x5e): // LD E,(HL)
OP(0x66): // LD H,(HL)
OP(0x6e): // LD L,(HL)
OP(0x7e): // LD A,(HL)
OP_LD_R_mHL:
PRE_IO
READ_BYTE(zHL, zR8((Opcode >> 3) & 7))
POST_IO
RET(7)
OP(0x70): // LD (HL),B
OP(0x71): // LD (HL),C
OP(0x72): // LD (HL),D
OP(0x73): // LD (HL),E
OP(0x74): // LD (HL),H
OP(0x75): // LD (HL),L
OP(0x77): // LD (HL),A
OP_LD_mHL_R:
PRE_IO
WRITE_BYTE(zHL, zR8(Opcode & 7))
POST_IO
RET(7)
OP(0x36): // LD (HL), #imm
OP_LD_mHL_imm:
PRE_IO
{ u8 t; FETCH_BYTE(t); WRITE_BYTE(zHL,t); }
POST_IO
RET(10)
{
u32 adr;
OP(0x0a): // LD A,(BC)
OP_LOAD_A_mBC:
adr = zBC;
goto OP_LOAD_A_mxx;
OP(0x1a): // LD A,(DE)
OP_LOAD_A_mDE:
adr = zDE;
OP_LOAD_A_mxx:
PRE_IO
READ_BYTE(adr, zA)
POST_IO
RET(7)
OP(0x3a): // LD A,(nn)
OP_LOAD_A_mNN:
PRE_IO
FETCH_WORD(adr);
READ_BYTE(adr, zA)
POST_IO
RET(13)
OP(0x02): // LD (BC),A
OP_LOAD_mBC_A:
adr = zBC;
goto OP_LOAD_mxx_A;
OP(0x12): // LD (DE),A
OP_LOAD_mDE_A:
adr = zDE;
OP_LOAD_mxx_A:
PRE_IO
WRITE_BYTE(adr, zA)
POST_IO
RET(7)
OP(0x32): // LD (nn),A
OP_LOAD_mNN_A:
PRE_IO
FETCH_WORD(adr);
WRITE_BYTE(adr, zA)
POST_IO
RET(13)
}
// 16 BITS LOAD
OP(0x01): // LD BC,nn
OP(0x11): // LD DE,nn
OP(0x21): // LD HL,nn
OP_LOAD_RR_imm16:
FETCH_WORD(zR16(Opcode >> 4));
RET(10)
OP(0x31): // LD SP,nn
OP_LOAD_SP_imm16:
FETCH_WORD(zSP);
RET(10)
OP(0xf9): // LD SP,HL
OP_LD_SP_xx:
zSP = data->W;
RET(6)
{
u32 adr;
OP(0x2a): // LD HL,(nn)
OP_LD_xx_mNN:
PRE_IO
FETCH_WORD(adr);
READ_WORD(adr, data->W)
POST_IO
RET(16)
OP(0x22): // LD (nn),HL
OP_LD_mNN_xx:
PRE_IO
FETCH_WORD(adr);
WRITE_WORD(adr, data->W)
POST_IO
RET(16)
}
// PUSH / POP
OP(0xf1): // POP AF
OP_POP_AF:
{
u32 res;
PRE_IO
POP_16(res)
zA = res >> 8;
zF = res & 0xFF;
POST_IO
RET(10)
}
OP(0xc1): // POP BC
OP(0xd1): // POP DE
OP_POP_RR:
data = pzR16((Opcode >> 4) & 3);
OP(0xe1): // POP HL
OP_POP:
PRE_IO
POP_16(data->W)
POST_IO
RET(10)
OP(0xf5): // PUSH AF
OP_PUSH_AF:
PRE_IO
PUSH_16((zA << 8) | zF);
POST_IO
RET(11)
OP(0xc5): // PUSH BC
OP(0xd5): // PUSH DE
OP_PUSH_RR:
data = pzR16((Opcode >> 4) & 3);
OP(0xe5): // PUSH HL
OP_PUSH:
PRE_IO
PUSH_16(data->W);
POST_IO
RET(11)
// EXCHANGE & BLOCK TRANSFERT / SEARCH
{
u32 tmp;
OP(0x08): // EX AF,AF'
OP_EX_AF_AF2:
tmp = zFA;
zFA = zFA2;
zFA2 = tmp;
RET(4)
OP(0xeb): // EX DE,HL
OP_EX_DE_HL:
tmp = zDE;
zDE = zHL;
zHL = tmp;
RET(4)
OP(0xd9): // EXX
OP_EXX:
tmp = zBC;
zBC = zBC2;
zBC2 = tmp;
tmp = zDE;
zDE = zDE2;
zDE2 = tmp;
tmp = zHL;
zHL = zHL2;
zHL2 = tmp;
RET(4)
}
OP(0xe3): // EX HL,(SP)
{
u32 adr;
u32 tmp;
OP_EX_xx_mSP:
PRE_IO
adr = zSP;
tmp = data->W;
READ_WORD(adr, data->W)
WRITE_WORD(adr, tmp)
POST_IO
RET(19)
}
// 8 BITS ARITHMETIC
OP(0x04): // INC B
OP(0x0c): // INC C
OP(0x14): // INC D
OP(0x1c): // INC E
OP(0x24): // INC H
OP(0x2c): // INC L
OP(0x3c): // INC A
OP_INC_R:
zR8(Opcode >> 3)++;
zF = (zF & CZ80_CF) | SZXYHV_inc[zR8(Opcode >> 3)];
RET(4)
{
u32 adr;
u32 res;
OP_INC_mIx:
{ s8 t; FETCH_BYTE_S(t); adr = data->W + t; }
Z80_ICount -= 11;
goto OP_INC_m;
OP(0x34): // INC (HL)
adr = zHL;
OP_INC_m:
PRE_IO
READ_BYTE(adr, res)
res = (res + 1) & 0xFF;
WRITE_BYTE(adr, res)
zF = (zF & CZ80_CF) | SZXYHV_inc[res];
POST_IO
RET(11)
}
OP(0x05): // DEC B
OP(0x0d): // DEC C
OP(0x15): // DEC D
OP(0x1d): // DEC E
OP(0x25): // DEC H
OP(0x2d): // DEC L
OP(0x3d): // DEC A
OP_DEC_R:
zR8(Opcode >> 3)--;
zF = (zF & CZ80_CF) | SZXYHV_dec[zR8(Opcode >> 3)];
RET(4)
{
u32 adr;
u32 res;
OP_DEC_mIx:
{ s8 t; FETCH_BYTE_S(t); adr = data->W + t; }
Z80_ICount -= 11;
goto OP_DEC_m;
OP(0x35): // DEC (HL)
adr = zHL;
OP_DEC_m:
PRE_IO
READ_BYTE(adr, res)
res = (res - 1) & 0xFF;
WRITE_BYTE(adr, res)
zF = (zF & CZ80_CF) | SZXYHV_dec[res];
POST_IO
RET(11)
}
{
u32 val;
u32 res;
// ADD
OP_ADD_mIx:
PRE_IO
{ s8 t; FETCH_BYTE_S(t); READ_BYTE(data->W + t, val); }
POST_IO
Z80_ICount -= 11;
goto OP_ADD;
OP(0xc6): // ADD A,n
OP_ADD_imm:
FETCH_BYTE(val);
Z80_ICount -= 3;
goto OP_ADD;
OP(0x86): // ADD A,(HL)
OP_ADD_mHL:
PRE_IO
READ_BYTE(zHL, val)
POST_IO
Z80_ICount -= 3;
goto OP_ADD;
OP_ADD_IxH:
val = data->B.H;
goto OP_ADD;
OP_ADD_IxL:
val = data->B.L;
goto OP_ADD;
OP(0x80): // ADD A,B
OP(0x81): // ADD A,C
OP(0x82): // ADD A,D
OP(0x83): // ADD A,E
OP(0x84): // ADD A,H
OP(0x85): // ADD A,L
OP(0x87): // ADD A,A
OP_ADD_R:
val = zR8(Opcode & 7);
OP_ADD:
// bench : maybe use src instead of zA in zF calculation
res = zA + val;
zF = SZXY[res & 0xFF] | // S/Z/X/Y flag
((zA ^ res ^ val) & CZ80_HF) | // H flag
(((val ^ zA ^ 0x80) & (val ^ res) & 0x80) >> 5) | // V flag
((res >> 8) & CZ80_CF); // C flag
zA = res;
RET(4)
// ADC
OP_ADC_mIx:
PRE_IO
{ s8 t; FETCH_BYTE_S(t); READ_BYTE(data->W + t, val); }
POST_IO
Z80_ICount -= 11;
goto OP_ADC;
OP(0xce): // ADC A,n
OP_ADC_imm:
FETCH_BYTE(val);
Z80_ICount -= 3;
goto OP_ADC;
OP(0x8e): // ADC A,(HL)
OP_ADC_mHL:
PRE_IO
READ_BYTE(zHL, val)
POST_IO
Z80_ICount -= 3;
goto OP_ADC;
OP_ADC_IxH:
val = data->B.H;
goto OP_ADC;
OP_ADC_IxL:
val = data->B.L;
goto OP_ADC;
OP(0x88): // ADC A,B
OP(0x89): // ADC A,C
OP(0x8a): // ADC A,D
OP(0x8b): // ADC A,E
OP(0x8c): // ADC A,H
OP(0x8d): // ADC A,L
OP(0x8f): // ADC A,A
OP_ADC_R:
val = zR8(Opcode & 7);
OP_ADC:
// bench : maybe use src instead of zA in zF calculation
res = (zA + val) + (zF & CZ80_CF);
zF = SZXY[res & 0xFF] | // S/Z/X/Y flag
((zA ^ res ^ val) & CZ80_HF) | // H flag
(((val ^ zA ^ 0x80) & (val ^ res) & 0x80) >> 5) | // V flag
((res >> 8) & CZ80_CF); // C flag
zA = res;
RET(4)
// SUB
OP_SUB_mIx:
PRE_IO
{ s8 t; FETCH_BYTE_S(t); READ_BYTE(data->W + t, val); }
POST_IO
Z80_ICount -= 11;
goto OP_SUB;
OP(0xd6): // SUB A,n
OP_SUB_imm:
FETCH_BYTE(val);
Z80_ICount -= 3;
goto OP_SUB;
OP(0x96): // SUB (HL)
OP_SUB_mHL:
PRE_IO
READ_BYTE(zHL, val)
POST_IO
Z80_ICount -= 3;
goto OP_SUB;
OP_SUB_IxH:
val = data->B.H;
goto OP_SUB;
OP_SUB_IxL:
val = data->B.L;
goto OP_SUB;
OP(0x90): // SUB B
OP(0x91): // SUB C
OP(0x92): // SUB D
OP(0x93): // SUB E
OP(0x94): // SUB H
OP(0x95): // SUB L
OP(0x97): // SUB A
OP_SUB_R:
val = zR8(Opcode & 7);
OP_SUB:
// bench : maybe use src instead of zA in zF calculation
res = zA - val;
zF = SZXY[res & 0xFF] | // S/Z/X/Y flag
((zA ^ res ^ val) & CZ80_HF) | // H flag
(((val ^ zA) & (zA ^ res) & 0x80) >> 5) | // V flag
((res >> 8) & CZ80_CF) | CZ80_NF; // C/N flag
zA = res;
RET(4)
// SBC
OP_SBC_mIx:
PRE_IO
{ s8 t; FETCH_BYTE_S(t); READ_BYTE(data->W + t, val); }
POST_IO
Z80_ICount -= 11;
goto OP_SBC;
OP(0xde): // SBC A,n
OP_SBC_imm:
FETCH_BYTE(val);
Z80_ICount -= 3;
goto OP_SBC;
OP(0x9e): // SBC A,(HL)
OP_SBC_mHL:
PRE_IO
READ_BYTE(zHL, val)
POST_IO
Z80_ICount -= 3;
goto OP_SBC;
OP_SBC_IxH:
val = data->B.H;
goto OP_SBC;
OP_SBC_IxL:
val = data->B.L;
goto OP_SBC;
OP(0x98): // SBC A,B
OP(0x99): // SBC A,C
OP(0x9a): // SBC A,D
OP(0x9b): // SBC A,E
OP(0x9c): // SBC A,H
OP(0x9d): // SBC A,L
OP(0x9f): // SBC A,A
OP_SBC_R:
val = zR8(Opcode & 7);
OP_SBC:
// bench : maybe use src instead of zA in zF calculation
res = zA - (val + (zF & CZ80_CF));
zF = SZXY[res & 0xFF] | // S/Z/X/Y flag
((zA ^ res ^ val) & CZ80_HF) | // H flag
(((val ^ zA) & (zA ^ res) & 0x80) >> 5) | // V flag
((res >> 8) & CZ80_CF) | CZ80_NF; // C/N flag
zA = res;
RET(4)
// CP
OP_CP_mIx:
PRE_IO
{ s8 t; FETCH_BYTE_S(t); READ_BYTE(data->W + t, val); }
POST_IO
Z80_ICount -= 11;
goto OP_CP;
OP(0xfe): // CP n
OP_CP_imm:
FETCH_BYTE(val);
Z80_ICount -= 3;
goto OP_CP;
OP(0xbe): // CP (HL)
OP_CP_mHL:
PRE_IO
READ_BYTE(zHL, val)
POST_IO
Z80_ICount -= 3;
goto OP_CP;
OP_CP_IxH:
val = data->B.H;
goto OP_CP;
OP_CP_IxL:
val = data->B.L;
goto OP_CP;
OP(0xb8): // CP B
OP(0xb9): // CP C
OP(0xba): // CP D
OP(0xbb): // CP E
OP(0xbc): // CP H
OP(0xbd): // CP L
OP(0xbf): // CP A
OP_CP_R:
val = zR8(Opcode & 7);
OP_CP:
// bench : maybe use src instead of zA in zF calculation
res = zA - val;
#if CZ80_DEBUG
zF = SZXY[res & 0xFF] | // S/Z/X/Y flag
((zA ^ res ^ val) & CZ80_HF) | // H flag
(((val ^ zA) & (zA ^ res) & 0x80) >> 5) | // V flag
((res >> 8) & CZ80_CF) | CZ80_NF; // C/N flag
#else
zF = (SZXY[res & 0xFF] & ~(CZ80_XF | CZ80_YF)) | // S/Z flag
(val & (CZ80_XF | CZ80_YF)) | // X/Y flag
((zA ^ res ^ val) & CZ80_HF) | // H flag
(((val ^ zA) & (zA ^ res) & 0x80) >> 5) | // V flag
((res >> 8) & CZ80_CF) | CZ80_NF; // C/N flag
#endif
RET(4)
}
// AND
{
u32 val;
OP(0xa6): // AND (HL)
OP_AND_mHL:
PRE_IO
READ_BYTE(zHL, val)
POST_IO
goto OP_AND_;
OP(0xe6): // AND A,n
OP_AND_imm:
FETCH_BYTE(val);
OP_AND_:
zA = zA & val;
zF = SZXYP[zA] | CZ80_HF;
RET(7)
OP_AND_IxL:
val = data->B.L;
goto OP_AND;
OP_AND_IxH:
val = data->B.H;
goto OP_AND;
OP(0xa0): // AND B
OP(0xa1): // AND C
OP(0xa2): // AND D
OP(0xa3): // AND E
OP(0xa4): // AND H
OP(0xa5): // AND L
OP_AND_R:
val = zR8(Opcode & 7);
OP_AND:
zA = zA & val;
OP(0xa7): // AND A
OP_AND_A:
zF = SZXYP[zA] | CZ80_HF;
RET(4)
// XOR
OP(0xae): // XOR (HL)
OP_XOR_mHL:
PRE_IO
READ_BYTE(zHL, val)
POST_IO
goto OP_XOR_;
OP(0xee): // XOR A,n
OP_XOR_imm:
FETCH_BYTE(val);
OP_XOR_:
zA = zA ^ val;
zF = SZXYP[zA];
RET(7)
OP_XOR_IxL:
val = data->B.L;
goto OP_XOR;
OP_XOR_IxH:
val = data->B.H;
goto OP_XOR;
OP(0xa8): // XOR B
OP(0xa9): // XOR C
OP(0xaa): // XOR D
OP(0xab): // XOR E
OP(0xac): // XOR H
OP(0xad): // XOR L
OP_XOR_R:
val = zR8(Opcode & 7);
OP_XOR:
zA = zA ^ val;
zF = SZXYP[zA];
RET(4)
OP(0xaf): // XOR A
OP_XOR_A:
zA = 0;
zF = SZXYP[zA];
RET(4)
// OR
OP(0xb6): // OR (HL)
OP_OR_mHL:
PRE_IO
READ_BYTE(zHL, val)
POST_IO
goto OP_OR_;
OP(0xf6): // OR A,n
OP_OR_imm:
FETCH_BYTE(val);
OP_OR_:
zA = zA | val;
zF = SZXYP[zA];
RET(7)
OP_OR_IxL:
val = data->B.L;
goto OP_OR;
OP_OR_IxH:
val = data->B.H;
goto OP_OR;
OP(0xb0): // OR B
OP(0xb1): // OR C
OP(0xb2): // OR D
OP(0xb3): // OR E
OP(0xb4): // OR H
OP(0xb5): // OR L
OP_OR_R:
val = zR8(Opcode & 7);
OP_OR:
zA = zA | val;
OP(0xb7): // OR A
OP_OR_A:
zF = SZXYP[zA];
RET(4)
}
// MISC ARITHMETIC & CPU CONTROL
OP(0x27): // DAA
OP_DAA:
{
u8 _F;
u8 cf, nf, hf, lo, hi, diff;
_F = zF;
cf = _F & CZ80_CF;
nf = _F & CZ80_NF;
hf = _F & CZ80_HF;
lo = zA & 0x0F;
hi = zA >> 4;
if (cf)
{
diff = (lo <= 9 && !hf) ? 0x60 : 0x66;
}
else
{
if (lo >= 10)
{
diff = hi <= 8 ? 0x06 : 0x66;
}
else
{
if (hi >= 10)
{
diff = hf ? 0x66 : 0x60;
}
else
{
diff = hf ? 0x06 : 0x00;
}
}
}
if (nf) zA -= diff;
else zA += diff;
_F = SZXYP[zA] | (_F & CZ80_NF);
if (cf || (lo <= 9 ? hi >= 10 : hi >= 9)) _F |= CZ80_CF;
if (nf ? hf && lo <= 5 : lo >= 10) _F |= CZ80_HF;
zF = _F;
RET(4)
}
OP(0x2f): // CPL
OP_CPL:
zA ^= 0xFF;
zF = (zF & (CZ80_SF | CZ80_ZF | CZ80_PF | CZ80_CF)) |
CZ80_HF | CZ80_NF |
(zA & (CZ80_XF | CZ80_YF));
RET(4)
OP(0x37): // SCF
OP_SCF:
zF = (zF & (CZ80_SF | CZ80_ZF | CZ80_PF)) |
(zA & (CZ80_XF | CZ80_YF)) |
CZ80_CF;
RET(4)
OP(0x3f): // CCF
OP_CCF:
zF = ((zF & (CZ80_SF | CZ80_ZF | CZ80_PF | CZ80_CF)) |
((zF & CZ80_CF) << 4) |
(zA & (CZ80_XF | CZ80_YF))) ^
CZ80_CF;
RET(4)
OP(0x76): // HALT
OP_HALT:
// HALTED state
CPU->Status |= CZ80_HALTED;
// release remaining cycles...
Z80_ICount = 0;
goto Cz80_Exec_Really_End;
OP(0xf3): // DI
OP_DI:
zIFF = 0;
#if CZ80_DEBUG
RET(4)
#else
Z80_ICount -= 4;
// can't take interrupt after DI so we force next instruction execution
goto Cz80_Exec;
#endif
OP(0xfb): // EI
OP_EI:
zIFF = CZ80_IFF | (CZ80_IFF << 8);
#if CZ80_DEBUG
RET(4)
#else
// release remaining cycles...
CPU->CycleSup += Z80_ICount - 4;
Z80_ICount = 0;
// can't take interrupt after EI so we force next instruction execution
goto Cz80_Exec;
#endif
// 16 BITS ARITHMETIC
OP(0x03): // INC BC
OP_INC_BC:
zBC++;
RET(6)
OP(0x13): // INC DE
OP_INC_DE:
zDE++;
RET(6)
OP(0x23): // INC HL
OP_INC_xx:
data->W++;
RET(6)
OP(0x33): // INC SP
OP_INC_SP:
zSP++;
RET(6)
OP(0x0b): // DEC BC
OP_DEC_BC:
zBC--;
RET(6)
OP(0x1b): // DEC DE
OP_DEC_DE:
zDE--;
RET(6)
OP(0x2b): // DEC HL
OP_DEC_xx:
data->W--;
RET(6)
OP(0x3b): // DEC SP
OP_DEC_SP:
zSP--;
RET(6)
// ADD16
{
u32 src;
u32 res;
OP(0x39): // ADD xx,SP
OP_ADD16_xx_SP:
src = zSP;
goto OP_ADD16;
OP(0x29): // ADD xx,xx
OP_ADD16_xx_xx:
src = data->W;
goto OP_ADD16;
OP(0x09): // ADD xx,BC
OP_ADD16_xx_BC:
src = zBC;
goto OP_ADD16;
OP(0x19): // ADD xx,DE
OP_ADD16_xx_DE:
src = zDE;
OP_ADD16:
res = src + data->W;
#if CZ80_DEBUG
zF = (zF & (CZ80_SF | CZ80_ZF | CZ80_VF)) | // S/Z/V flag
(((src ^ data->W ^ res) >> 8) & CZ80_HF) | // H flag
((res >> 16) & CZ80_CF); // C flag
#else
zF = (zF & (CZ80_SF | CZ80_ZF | CZ80_VF)) | // S/Z/V flag
(((src ^ data->W ^ res) >> 8) & CZ80_HF) | // H flag
((res >> 8) & (CZ80_XF | CZ80_YF)) | // X/Y flag
((res >> 16) & CZ80_CF); // C flag
#endif
data->W = res;
RET(11)
}
// ROTATE
{
u8 A;
u8 F;
OP(0x07): // RLCA
OP_RLCA:
A = zA;
zA = (A << 1) | (A >> 7);
zF = (zF & (CZ80_SF | CZ80_ZF | CZ80_PF)) | // S/Z/P flag
(zA & (CZ80_XF | CZ80_YF | CZ80_CF)); // X/Y/C
RET(4)
OP(0x0f): // RRCA
OP_RRCA:
A = zA;
zA = (A >> 1) | (A << 7);
zF = (zF & (CZ80_SF | CZ80_ZF | CZ80_PF)) | // S/Z/P flag
(zA & (CZ80_XF | CZ80_YF)) | // X/Y flag
(A & CZ80_CF); // C flag
RET(4)
OP(0x17): // RLA
OP_RLA:
A = zA;
F = zF;
zA = (A << 1) | (F & CZ80_CF);
zF = (F & (CZ80_SF | CZ80_ZF | CZ80_PF)) | // S/Z/P flag
(zA & (CZ80_XF | CZ80_YF)) | // X/Y flag
(A >> 7); // C flag
RET(4)
OP(0x1f): // RRA
OP_RRA:
A = zA;
F = zF;
zA = (A >> 1) | (F << 7);
zF = (F & (CZ80_SF | CZ80_ZF | CZ80_PF)) | // S/Z/P flag
(zA & (CZ80_XF | CZ80_YF)) | // X/Y flag
(A & CZ80_CF); // C flag
RET(4)
}
// JUMP
{
u32 newPC;
OP(0xd2): // JP NC,nn
OP_JP_NC:
if (!(zF & CZ80_CF)) goto OP_JP;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10);
OP(0xda): // JP C,nn
OP_JP_C:
if (zF & CZ80_CF) goto OP_JP;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10);
OP(0xe2): // JP PO,nn
OP_JP_PO:
if (!(zF & CZ80_VF)) goto OP_JP;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10);
OP(0xea): // JP PE,nn
OP_JP_PE:
if (zF & CZ80_VF) goto OP_JP;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10);
OP(0xf2): // JP P,nn
OP_JP_P:
if (!(zF & CZ80_SF)) goto OP_JP;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10);
OP(0xfa): // JP M,nn
OP_JP_M:
if (zF & CZ80_SF) goto OP_JP;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10);
OP(0xca): // JP Z,nn
OP_JP_Z:
if (zF & CZ80_ZF) goto OP_JP;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10);
OP(0xc2): // JP NZ,nn
OP_JP_NZ:
if (!(zF & CZ80_ZF)) goto OP_JP;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10);
OP(0xc3): // JP nn
OP_JP:
FETCH_WORD(newPC);
SET_PC(newPC);
RET(10)
OP(0xe9): // JP (xx)
OP_JP_xx:
newPC = data->W;
SET_PC(newPC);
RET(4)
OP(0x38): // JR C,n
OP_JR_C:
if (zF & CZ80_CF) goto OP_JR;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+1;
SET_PC(newPC);
RET(7)
OP(0x30): // JR NC,n
OP_JR_NC:
if (!(zF & CZ80_CF)) goto OP_JR;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+1;
SET_PC(newPC);
RET(7)
OP(0x28): // JR Z,n
OP_JR_Z:
if (zF & CZ80_ZF) goto OP_JR;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+1;
SET_PC(newPC);
RET(7)
OP(0x20): // JR NZ,n
OP_JR_NZ:
if (!(zF & CZ80_ZF)) goto OP_JR;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+1;
SET_PC(newPC);
RET(7)
OP(0x10): // DJNZ n
OP_DJNZ:
Z80_ICount--;
if (--zB) goto OP_JR;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+1;
SET_PC(newPC);
RET(9)
OP(0x18): // JR n
OP_JR:
{
u32 adr;
FETCH_BYTE_S(adr);
// no rebase needed here...
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+adr;
SET_PC(newPC);
RET(12)
}
// CALL & RETURN
OP(0xd4): // CALL NC,nn
OP_CALL_NC:
if (!(zF & CZ80_CF)) goto OP_CALL;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10)
OP(0xdc): // CALL C,nn
OP_CALL_C:
if (zF & CZ80_CF) goto OP_CALL;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10)
OP(0xe4): // CALL PO,nn
OP_CALL_PO:
if (!(zF & CZ80_VF)) goto OP_CALL;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10)
OP(0xec): // CALL PE,nn
OP_CALL_PE:
if (zF & CZ80_VF) goto OP_CALL;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10)
OP(0xf4): // CALL P,nn
OP_CALL_P:
if (!(zF & CZ80_SF)) goto OP_CALL;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10)
OP(0xfc): // CALL M,nn
OP_CALL_M:
if (zF & CZ80_SF) goto OP_CALL;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10)
OP(0xcc): // CALL Z,nn
OP_CALL_Z:
if (zF & CZ80_ZF) goto OP_CALL;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10)
OP(0xc4): // CALL NZ,nn
OP_CALL_NZ:
if (!(zF & CZ80_ZF)) goto OP_CALL;
newPC=(((uintptr_t)zPC)-((uintptr_t)mame4all_cz80_rom))+2;
SET_PC(newPC);
RET(10)
}
OP(0xcd): // CALL nn
OP_CALL:
{
u32 oldRPC;
u32 newPC;
PRE_IO
FETCH_WORD(newPC);
oldRPC = zRealPC;
PUSH_16(oldRPC);
SET_PC(newPC);
POST_IO
RET(17)
}
OP(0xd0): // RET NC
OP_RET_NC:
if (!(zF & CZ80_CF)) goto OP_RET_COND;
RET(5)
OP(0xd8): // RET C
OP_RET_C:
if (zF & CZ80_CF) goto OP_RET_COND;
RET(5)
OP(0xe0): // RET PO
OP_RET_PO:
if (!(zF & CZ80_VF)) goto OP_RET_COND;
RET(5)
OP(0xe8): // RET PE
OP_RET_PE:
if (zF & CZ80_VF) goto OP_RET_COND;
RET(5)
OP(0xf0): // RET P
OP_RET_P:
if (!(zF & CZ80_SF)) goto OP_RET_COND;
RET(5)
OP(0xf8): // RET M
OP_RET_M:
if (zF & CZ80_SF) goto OP_RET_COND;
RET(5)
OP(0xc0): // RET NZ
OP_RET_NZ:
if (!(zF & CZ80_ZF)) goto OP_RET_COND;
RET(5)
OP(0xc8): // RET Z
OP_RET_Z:
if (zF & CZ80_ZF) goto OP_RET_COND;
RET(5)
OP_RET_COND:
Z80_ICount -= 7;
OP(0xc9): // RET
OP_RET:
{
u32 newPC;
PRE_IO
POP_16(newPC);
SET_PC(newPC);
POST_IO
RET(10)
}
OP(0xc7): // RST 0
OP(0xcf): // RST 1
OP(0xd7): // RST 2
OP(0xdf): // RST 3
OP(0xe7): // RST 4
OP(0xef): // RST 5
OP(0xf7): // RST 6
OP(0xff): // RST 7
OP_RST:
{
u32 src;
u32 newPC;
src = zRealPC;
PUSH_16(src);
newPC = Opcode & 0x38;
SET_PC(newPC);
RET(11)
}
// INPUT & OUTPUT
{
u32 adr;
OP(0xd3): // OUT (n),A
OP_OUT_mN_A:
{ u8 t; FETCH_BYTE(t); adr = (zA << 8) | t; }
OUT(adr, zA)
RET(11)
OP(0xdb): // IN A,(n)
OP_IN_A_mN:
{ u8 t; FETCH_BYTE(t); adr = (zA << 8) | t; }
IN(adr, zA)
RET(11)
}
// PREFIXE
OP(0xcb): // CB PREFIXE (BIT & SHIFT INSTRUCTIONS)
CB_PREFIXE:
Opcode = REAL_FETCH_BYTE;
#include "cz80_opCB.inc"
OP(0xed): // ED PREFIXE
ED_PREFIXE:
Z80_ICount -= 4;
Opcode = REAL_FETCH_BYTE;
#include "cz80_opED.inc"
OP(0xdd): // DD PREFIXE (IX)
DD_PREFIXE:
data = pzIX;
goto XY_PREFIXE;
OP(0xfd): // FD PREFIXE (IY)
FD_PREFIXE:
data = pzIY;
XY_PREFIXE:
Z80_ICount -= 4;
Opcode = REAL_FETCH_BYTE;
#include "cz80_opXY.inc"
#if CZ80_USE_JUMPTABLE
#else
}
#endif
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