#define INC_8BIT(x) \ { \ register UINT8 r,f; \ x++; \ r=(x); \ f=(UINT8)(cpustate->b.F&FLAG_C); \ if( r==0 ) f|=FLAG_Z; \ if( (r&0xF)==0 ) f|=FLAG_H; \ cpustate->b.F=f; \ } #define DEC_8BIT(x) \ { \ register UINT8 r,f; \ x--; \ r=(x); \ f=(UINT8)((cpustate->b.F&FLAG_C)|FLAG_N); \ if( r==0 ) f|=FLAG_Z; \ if( (r&0xF)==0xF ) f|=FLAG_H; \ cpustate->b.F=f; \ } #define ADD_HL_RR(x) \ { \ register UINT32 r1,r2; \ register UINT8 f; \ r1=cpustate->w.HL+(x); \ r2=(cpustate->w.HL&0xFFF)+((x)&0xFFF); \ f=(UINT8)(cpustate->b.F&FLAG_Z); \ if( r1>0xFFFF ) f|=FLAG_C; \ if( r2>0x0FFF ) f|=FLAG_H; \ cpustate->w.HL=(UINT16)r1; \ cpustate->b.F=f; \ } #define ADD_A_X(x) \ { \ register UINT16 r1,r2; \ register UINT8 f; \ r1=(UINT16)((cpustate->b.A&0xF)+((x)&0xF)); \ r2=(UINT16)(cpustate->b.A+(x)); \ cpustate->b.A=(UINT8)r2; \ if( ((UINT8)r2)==0 ) f=FLAG_Z; \ else f=0; \ if( r2>0xFF ) f|=FLAG_C; \ if( r1>0xF ) f|=FLAG_H; \ cpustate->b.F=f; \ } #define SUB_A_X(x) \ { \ register UINT16 r1,r2; \ register UINT8 f; \ r1=(UINT16)((cpustate->b.A&0xF)-((x)&0xF)); \ r2=(UINT16)(cpustate->b.A-(x)); \ cpustate->b.A=(UINT8)r2; \ if( ((UINT8)r2)==0 ) f=FLAG_N|FLAG_Z; \ else f=FLAG_N; \ if( r2>0xFF ) f|=FLAG_C; \ if( r1>0xF ) f|=FLAG_H; \ cpustate->b.F=f; \ } /* #define CP_A_X(x) \ { \ register UINT16 r; \ register UINT8 f; \ r=(UINT16)(cpustate->b.A-(x)); \ if( ((UINT8)r)==0 ) \ f=FLAG_N|FLAG_Z; \ else \ f=FLAG_N; \ f|=(UINT8)((r>>8)&FLAG_C); \ if( (r^cpustate->b.A^(x))&0x10 ) \ f|=FLAG_H; \ cpustate->b.F=f; \ } */ #define CP_A_X(x) \ { \ register UINT16 r1,r2; \ register UINT8 f; \ r1=(UINT16)((cpustate->b.A&0xF)-((x)&0xF)); \ r2=(UINT16)(cpustate->b.A-(x)); \ if( ((UINT8)r2)==0 ) f=FLAG_N|FLAG_Z; \ else f=FLAG_N; \ if( r2>0xFF ) f|=FLAG_C; \ if( r1>0xF ) f|=FLAG_H; \ cpustate->b.F=f; \ } #define SBC_A_X(x) \ { \ register UINT16 r1,r2; \ register UINT8 f; \ r1=(UINT16)((cpustate->b.A&0xF)-((x)&0xF)-((cpustate->b.F&FLAG_C)?1:0)); \ r2=(UINT16)(cpustate->b.A-(x)-((cpustate->b.F&FLAG_C)?1:0)); \ cpustate->b.A=(UINT8)r2; \ if( ((UINT8)r2)==0 ) f=FLAG_N|FLAG_Z; \ else f=FLAG_N; \ if( r2>0xFF ) f|=FLAG_C; \ if( r1>0xF ) f|=FLAG_H; \ cpustate->b.F=f; \ } #define ADC_A_X(x) \ { \ register UINT16 r1,r2; \ register UINT8 f; \ r1=(UINT16)((cpustate->b.A&0xF)+((x)&0xF)+((cpustate->b.F&FLAG_C)?1:0)); \ r2=(UINT16)(cpustate->b.A+(x)+((cpustate->b.F&FLAG_C)?1:0)); \ if( (cpustate->b.A=(UINT8)r2)==0 ) f=FLAG_Z; \ else f=0; \ if( r2>0xFF ) f|=FLAG_C; \ if( r1>0xF ) f|=FLAG_H; \ cpustate->b.F=f; \ } #define AND_A_X(x) \ if( (cpustate->b.A&=(x))==0 ) \ cpustate->b.F=FLAG_H|FLAG_Z; \ else \ cpustate->b.F=FLAG_H; #define XOR_A_X(x) \ if( (cpustate->b.A^=(x))==0 ) \ cpustate->b.F=FLAG_Z; \ else \ cpustate->b.F=0; #define OR_A_X(x) \ if( (cpustate->b.A|=(x))==0 ) \ cpustate->b.F=FLAG_Z; \ else \ cpustate->b.F=0; case 0x00: /* NOP */ break; case 0x01: /* LD BC,n16 */ cpustate->w.BC = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; break; case 0x02: /* LD (BC),A */ mem_WriteByte (cpustate, cpustate->w.BC, cpustate->b.A); break; case 0x03: /* INC BC */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.B == 0xFE) { trash_sprites (state); } #endif cpustate->w.BC += 1; break; case 0x04: /* INC B */ INC_8BIT (cpustate->b.B) break; case 0x05: /* DEC B */ DEC_8BIT (cpustate->b.B) break; case 0x06: /* LD B,n8 */ cpustate->b.B = mem_ReadByte (cpustate, cpustate->w.PC++); break; case 0x07: /* RLCA */ cpustate->b.A = (UINT8) ((cpustate->b.A << 1) | (cpustate->b.A >> 7)); if (cpustate->b.A & 1) { cpustate->b.F = FLAG_C; } else { cpustate->b.F = 0; } break; case 0x08: /* LD (n16),SP */ mem_WriteWord (cpustate, mem_ReadWord (cpustate, cpustate->w.PC), cpustate->w.SP); cpustate->w.PC += 2; break; case 0x09: /* ADD HL,BC */ ADD_HL_RR (cpustate->w.BC) break; case 0x0A: /* LD A,(BC) */ cpustate->b.A = mem_ReadByte (cpustate, cpustate->w.BC); break; case 0x0B: /* DEC BC */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.B == 0xFE) { trash_sprites (state); } #endif cpustate->w.BC -= 1; break; case 0x0C: /* INC C */ INC_8BIT (cpustate->b.C) break; case 0x0D: /* DEC C */ DEC_8BIT (cpustate->b.C) break; case 0x0E: /* LD C,n8 */ cpustate->b.C = mem_ReadByte (cpustate, cpustate->w.PC++); break; case 0x0F: /* RRCA */ cpustate->b.A = (UINT8) ((cpustate->b.A >> 1) | (cpustate->b.A << 7)); cpustate->b.F = 0; if (cpustate->b.A & 0x80) { cpustate->b.F |= FLAG_C; } break; case 0x10: /* STOP */ if ( cpustate->w.gb_speed_change_pending ) { cpustate->w.gb_speed = ( cpustate->w.gb_speed == 1 ) ? 2 : 1; } cpustate->w.gb_speed_change_pending = 0; break; case 0x11: /* LD DE,n16 */ cpustate->w.DE = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; break; case 0x12: /* LD (DE),A */ mem_WriteByte (cpustate, cpustate->w.DE, cpustate->b.A); break; case 0x13: /* INC DE */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.D == 0xFE) { trash_sprites (state); } #endif cpustate->w.DE += 1; break; case 0x14: /* INC D */ INC_8BIT (cpustate->b.D) break; case 0x15: /* DEC D */ DEC_8BIT (cpustate->b.D) break; case 0x16: /* LD D,n8 */ cpustate->b.D = mem_ReadByte (cpustate, cpustate->w.PC++); break; case 0x17: /* RLA */ x = (cpustate->b.A & 0x80) ? FLAG_C : 0; cpustate->b.A = (UINT8) ((cpustate->b.A << 1) | ((cpustate->b.F & FLAG_C) ? 1 : 0)); cpustate->b.F = x; break; case 0x18: /* JR n8 */ { INT8 offset; offset = mem_ReadByte (cpustate, cpustate->w.PC++); cpustate->w.PC += offset; } break; case 0x19: /* ADD HL,DE */ ADD_HL_RR (cpustate->w.DE) break; case 0x1A: /* LD A,(DE) */ cpustate->b.A = mem_ReadByte (cpustate, cpustate->w.DE); break; case 0x1B: /* DEC DE */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.D == 0xFE) { trash_sprites (state); } #endif cpustate->w.DE -= 1; break; case 0x1C: /* INC E */ INC_8BIT (cpustate->b.E) break; case 0x1D: /* DEC E */ DEC_8BIT (cpustate->b.E) break; case 0x1E: /* LD E,n8 */ cpustate->b.E = mem_ReadByte (cpustate, cpustate->w.PC++); break; case 0x1F: /* RRA */ x = (cpustate->b.A & 1) ? FLAG_C : 0; cpustate->b.A = (UINT8) ((cpustate->b.A >> 1) | ((cpustate->b.F & FLAG_C) ? 0x80 : 0)); cpustate->b.F = x; break; case 0x20: /* JR NZ,n8 */ if (cpustate->b.F & FLAG_Z) { cpustate->w.PC++; } else { INT8 offset; offset = mem_ReadByte (cpustate, cpustate->w.PC++); cpustate->w.PC += offset; CYCLES_PASSED( 4 ); } break; case 0x21: /* LD HL,n16 */ cpustate->w.HL = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; break; case 0x22: /* LD (HL+),A */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.H == 0xFE) { trash_sprites (state); } #endif mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.A); cpustate->w.HL += 1; break; case 0x23: /* INC HL */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.H == 0xFE) { trash_sprites (state); } #endif cpustate->w.HL += 1; break; case 0x24: /* INC H */ INC_8BIT (cpustate->b.H); break; case 0x25: /* DEC H */ DEC_8BIT (cpustate->b.H); break; case 0x26: /* LD H,n8 */ cpustate->b.H = mem_ReadByte (cpustate, cpustate->w.PC++); break; case 0x27: /* DAA */ { int tmp = cpustate->b.A; if ( ! ( cpustate->b.F & FLAG_N ) ) { if ( ( cpustate->b.F & FLAG_H ) || ( tmp & 0x0F ) > 9 ) tmp += 6; if ( ( cpustate->b.F & FLAG_C ) || tmp > 0x9F ) tmp += 0x60; } else { if ( cpustate->b.F & FLAG_H ) { tmp -= 6; if ( ! ( cpustate->b.F & FLAG_C ) ) tmp &= 0xFF; } if ( cpustate->b.F & FLAG_C ) tmp -= 0x60; } cpustate->b.F &= ~ ( FLAG_H | FLAG_Z ); if ( tmp & 0x100 ) cpustate->b.F |= FLAG_C; cpustate->b.A = tmp & 0xFF; if ( ! cpustate->b.A ) cpustate->b.F |= FLAG_Z; } break; case 0x28: /* JR Z,n8 */ if (cpustate->b.F & FLAG_Z) { INT8 offset; offset = mem_ReadByte (cpustate, cpustate->w.PC++); cpustate->w.PC += offset; CYCLES_PASSED( 4 ); } else { cpustate->w.PC += 1; } break; case 0x29: /* ADD HL,HL */ ADD_HL_RR (cpustate->w.HL) break; case 0x2A: /* LD A,(HL+) */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.H == 0xFE) { trash_sprites (state); } #endif cpustate->b.A = mem_ReadByte (cpustate, cpustate->w.HL); cpustate->w.HL += 1; break; case 0x2B: /* DEC HL */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.H == 0xFE) { trash_sprites (state); } #endif cpustate->w.HL -= 1; break; case 0x2C: /* INC L */ INC_8BIT (cpustate->b.L); break; case 0x2D: /* DEC L */ DEC_8BIT (cpustate->b.L); break; case 0x2E: /* LD L,n8 */ cpustate->b.L = mem_ReadByte (cpustate, cpustate->w.PC++); break; case 0x2F: /* CPL */ cpustate->b.A = ~cpustate->b.A; cpustate->b.F |= FLAG_N | FLAG_H; break; case 0x30: /* JR NC,n8 */ if (cpustate->b.F & FLAG_C) { cpustate->w.PC += 1; } else { INT8 offset; offset = mem_ReadByte (cpustate, cpustate->w.PC++); cpustate->w.PC += offset; CYCLES_PASSED( 4 ); } break; case 0x31: /* LD SP,n16 */ cpustate->w.SP = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; break; case 0x32: /* LD (HL-),A */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.H == 0xFE) { trash_sprites (state); } #endif mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.A); cpustate->w.HL -= 1; break; case 0x33: /* INC SP */ cpustate->w.SP += 1; break; case 0x34: /* INC (HL) */ { register UINT8 r, f; f = (UINT8) (cpustate->b.F & FLAG_C); r = (UINT8) (mem_ReadByte (cpustate, cpustate->w.HL) + 1); mem_WriteByte (cpustate, cpustate->w.HL, r); if (r == 0) f |= FLAG_Z; if ((r & 0xF) == 0) f |= FLAG_H; cpustate->b.F = f; } break; case 0x35: /* DEC (HL) */ { register UINT8 r, f; f = (UINT8) ((cpustate->b.F & FLAG_C) | FLAG_N); r = (UINT8) (mem_ReadByte (cpustate, cpustate->w.HL) - 1); mem_WriteByte (cpustate, cpustate->w.HL, r); if (r == 0) f |= FLAG_Z; if ((r & 0xF) == 0xF) f |= FLAG_H; cpustate->b.F = f; } break; case 0x36: /* LD (HL),n8 */ /* FIXED / broken ? */ mem_WriteByte (cpustate, cpustate->w.HL, mem_ReadByte (cpustate, cpustate->w.PC++)); break; case 0x37: /* SCF */ cpustate->b.F = (UINT8) ((cpustate->b.F & FLAG_Z) | FLAG_C); break; case 0x38: /* JR C,n8 */ if (cpustate->b.F & FLAG_C) { INT8 offset; offset = mem_ReadByte (cpustate, cpustate->w.PC++); cpustate->w.PC += offset; CYCLES_PASSED( 4 ); } else { cpustate->w.PC += 1; } break; case 0x39: /* ADD HL,SP */ ADD_HL_RR (cpustate->w.SP) break; case 0x3A: /* LD A,(HL-) */ #if 0 /* FIXME ?? do we want to support this? (bug emulation) */ if (cpustate->b.H == 0xFE) { trash_sprites (state); } #endif cpustate->b.A = mem_ReadByte (cpustate, cpustate->w.HL); cpustate->w.HL -= 1; break; case 0x3B: /* DEC SP */ cpustate->w.SP -= 1; break; case 0x3C: /* INC A */ INC_8BIT (cpustate->b.A); break; case 0x3D: /* DEC A */ DEC_8BIT (cpustate->b.A); break; case 0x3E: /* LD A,n8 */ cpustate->b.A = mem_ReadByte (cpustate, cpustate->w.PC++); break; case 0x3F: /* CCF */ cpustate->b.F = (UINT8) ((cpustate->b.F & FLAG_Z) | ((cpustate->b.F & FLAG_C) ? 0 : FLAG_C)); break; case 0x40: /* LD B,B */ break; case 0x41: /* LD B,C */ cpustate->b.B = cpustate->b.C; break; case 0x42: /* LD B,D */ cpustate->b.B = cpustate->b.D; break; case 0x43: /* LD B,E */ cpustate->b.B = cpustate->b.E; break; case 0x44: /* LD B,H */ cpustate->b.B = cpustate->b.H; break; case 0x45: /* LD B,L */ cpustate->b.B = cpustate->b.L; break; case 0x46: /* LD B,(HL) */ cpustate->b.B = mem_ReadByte (cpustate, cpustate->w.HL); break; case 0x47: /* LD B,A */ cpustate->b.B = cpustate->b.A; break; case 0x48: /* LD C,B */ cpustate->b.C = cpustate->b.B; break; case 0x49: /* LD C,C */ break; case 0x4A: /* LD C,D */ cpustate->b.C = cpustate->b.D; break; case 0x4B: /* LD C,E */ cpustate->b.C = cpustate->b.E; break; case 0x4C: /* LD C,H */ cpustate->b.C = cpustate->b.H; break; case 0x4D: /* LD C,L */ cpustate->b.C = cpustate->b.L; break; case 0x4E: /* LD C,(HL) */ cpustate->b.C = mem_ReadByte (cpustate, cpustate->w.HL); break; case 0x4F: /* LD C,A */ cpustate->b.C = cpustate->b.A; break; case 0x50: /* LD D,B */ cpustate->b.D = cpustate->b.B; break; case 0x51: /* LD D,C */ cpustate->b.D = cpustate->b.C; break; case 0x52: /* LD D,D */ break; case 0x53: /* LD D,E */ cpustate->b.D = cpustate->b.E; break; case 0x54: /* LD D,H */ cpustate->b.D = cpustate->b.H; break; case 0x55: /* LD D,L */ cpustate->b.D = cpustate->b.L; break; case 0x56: /* LD D,(HL) */ cpustate->b.D = mem_ReadByte (cpustate, cpustate->w.HL); break; case 0x57: /* LD D,A */ cpustate->b.D = cpustate->b.A; break; case 0x58: /* LD E,B */ cpustate->b.E = cpustate->b.B; break; case 0x59: /* LD E,C */ cpustate->b.E = cpustate->b.C; break; case 0x5A: /* LD E,D */ cpustate->b.E = cpustate->b.D; break; case 0x5B: /* LD E,E */ break; case 0x5C: /* LD E,H */ cpustate->b.E = cpustate->b.H; break; case 0x5D: /* LD E,L */ cpustate->b.E = cpustate->b.L; break; case 0x5E: /* LD E,(HL) */ cpustate->b.E = mem_ReadByte (cpustate, cpustate->w.HL); break; case 0x5F: /* LD E,A */ cpustate->b.E = cpustate->b.A; break; case 0x60: /* LD H,B */ cpustate->b.H = cpustate->b.B; break; case 0x61: /* LD H,C */ cpustate->b.H = cpustate->b.C; break; case 0x62: /* LD H,D */ cpustate->b.H = cpustate->b.D; break; case 0x63: /* LD H,E */ cpustate->b.H = cpustate->b.E; break; case 0x64: /* LD H,H */ break; case 0x65: /* LD H,L */ cpustate->b.H = cpustate->b.L; break; case 0x66: /* LD H,(HL) */ cpustate->b.H = mem_ReadByte (cpustate, cpustate->w.HL); break; case 0x67: /* LD H,A */ cpustate->b.H = cpustate->b.A; break; case 0x68: /* LD L,B */ cpustate->b.L = cpustate->b.B; break; case 0x69: /* LD L,C */ cpustate->b.L = cpustate->b.C; break; case 0x6A: /* LD L,D */ cpustate->b.L = cpustate->b.D; break; case 0x6B: /* LD L,E */ cpustate->b.L = cpustate->b.E; break; case 0x6C: /* LD L,H */ cpustate->b.L = cpustate->b.H; break; case 0x6D: /* LD L,L */ break; case 0x6E: /* LD L,(HL) */ cpustate->b.L = mem_ReadByte (cpustate, cpustate->w.HL); break; case 0x6F: /* LD L,A */ cpustate->b.L = cpustate->b.A; break; case 0x70: /* LD (HL),B */ mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.B); break; case 0x71: /* LD (HL),C */ mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.C); break; case 0x72: /* LD (HL),D */ mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.D); break; case 0x73: /* LD (HL),E */ mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.E); break; case 0x74: /* LD (HL),H */ mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.H); break; case 0x75: /* LD (HL),L */ mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.L); break; case 0x76: /* HALT */ cpustate->w.enable |= HALTED; cpustate->w.PC--; break; case 0x77: /* LD (HL),A */ mem_WriteByte (cpustate, cpustate->w.HL, cpustate->b.A); break; case 0x78: /* LD A,B */ cpustate->b.A = cpustate->b.B; break; case 0x79: /* LD A,C */ cpustate->b.A = cpustate->b.C; break; case 0x7A: /* LD A,D */ cpustate->b.A = cpustate->b.D; break; case 0x7B: /* LD A,E */ cpustate->b.A = cpustate->b.E; break; case 0x7C: /* LD A,H */ cpustate->b.A = cpustate->b.H; break; case 0x7D: /* LD A,L */ cpustate->b.A = cpustate->b.L; break; case 0x7E: /* LD A,(HL) */ cpustate->b.A = mem_ReadByte (cpustate, cpustate->w.HL); break; case 0x7F: /* LD A,A */ break; case 0x80: /* ADD A,B */ ADD_A_X (cpustate->b.B) break; case 0x81: /* ADD A,C */ ADD_A_X (cpustate->b.C) break; case 0x82: /* ADD A,D */ ADD_A_X (cpustate->b.D) break; case 0x83: /* ADD A,E */ ADD_A_X (cpustate->b.E) break; case 0x84: /* ADD A,H */ ADD_A_X (cpustate->b.H) break; case 0x85: /* ADD A,L */ ADD_A_X (cpustate->b.L) break; case 0x86: /* ADD A,(HL) */ x = mem_ReadByte (cpustate, cpustate->w.HL); ADD_A_X (x) break; case 0x87: /* ADD A,A */ ADD_A_X (cpustate->b.A) break; case 0x88: /* ADC A,B */ ADC_A_X (cpustate->b.B) break; case 0x89: /* ADC A,C */ ADC_A_X (cpustate->b.C) break; case 0x8A: /* ADC A,D */ ADC_A_X (cpustate->b.D) break; case 0x8B: /* ADC A,E */ ADC_A_X (cpustate->b.E) break; case 0x8C: /* ADC A,H */ ADC_A_X (cpustate->b.H) break; case 0x8D: /* ADC A,L */ ADC_A_X (cpustate->b.L) break; case 0x8E: /* ADC A,(HL) */ x = mem_ReadByte (cpustate, cpustate->w.HL); ADC_A_X (x) break; case 0x8F: /* ADC A,A */ ADC_A_X (cpustate->b.A) break; case 0x90: /* SUB A,B */ SUB_A_X (cpustate->b.B) break; case 0x91: /* SUB A,C */ SUB_A_X (cpustate->b.C) break; case 0x92: /* SUB A,D */ SUB_A_X (cpustate->b.D) break; case 0x93: /* SUB A,E */ SUB_A_X (cpustate->b.E) break; case 0x94: /* SUB A,H */ SUB_A_X (cpustate->b.H) break; case 0x95: /* SUB A,L */ SUB_A_X (cpustate->b.L) break; case 0x96: /* SUB A,(HL) */ x = mem_ReadByte (cpustate, cpustate->w.HL); SUB_A_X (x) break; case 0x97: /* SUB A,A */ SUB_A_X (cpustate->b.A) break; case 0x98: /* SBC A,B */ SBC_A_X (cpustate->b.B) break; case 0x99: /* SBC A,C */ SBC_A_X (cpustate->b.C) break; case 0x9A: /* SBC A,D */ SBC_A_X (cpustate->b.D) break; case 0x9B: /* SBC A,E */ SBC_A_X (cpustate->b.E) break; case 0x9C: /* SBC A,H */ SBC_A_X (cpustate->b.H) break; case 0x9D: /* SBC A,L */ SBC_A_X (cpustate->b.L) break; case 0x9E: /* SBC A,(HL) */ x = mem_ReadByte (cpustate, cpustate->w.HL); SBC_A_X (x) break; case 0x9F: /* SBC A,A */ SBC_A_X (cpustate->b.A) break; case 0xA0: /* AND A,B */ AND_A_X (cpustate->b.B) break; case 0xA1: /* AND A,C */ AND_A_X (cpustate->b.C) break; case 0xA2: /* AND A,D */ AND_A_X (cpustate->b.D) break; case 0xA3: /* AND A,E */ AND_A_X (cpustate->b.E) break; case 0xA4: /* AND A,H */ AND_A_X (cpustate->b.H) break; case 0xA5: /* AND A,L */ AND_A_X (cpustate->b.L) break; case 0xA6: /* AND A,(HL) */ x = mem_ReadByte (cpustate, cpustate->w.HL); AND_A_X (x) break; case 0xA7: /* AND A,A */ cpustate->b.F = (cpustate->b.A == 0) ? (FLAG_H | FLAG_Z) : FLAG_H; break; case 0xA8: /* XOR A,B */ XOR_A_X (cpustate->b.B) break; case 0xA9: /* XOR A,C */ XOR_A_X (cpustate->b.C) break; case 0xAA: /* XOR A,D */ XOR_A_X (cpustate->b.D) break; case 0xAB: /* XOR A,E */ XOR_A_X (cpustate->b.E) break; case 0xAC: /* XOR A,H */ XOR_A_X (cpustate->b.H) break; case 0xAD: /* XOR A,L */ XOR_A_X (cpustate->b.L) break; case 0xAE: /* XOR A,(HL) */ x = mem_ReadByte (cpustate, cpustate->w.HL); XOR_A_X (x) break; case 0xAF: /* XOR A,A */ XOR_A_X (cpustate->b.A) break; case 0xB0: /* OR A,B */ OR_A_X (cpustate->b.B) break; case 0xB1: /* OR A,C */ OR_A_X (cpustate->b.C) break; case 0xB2: /* OR A,D */ OR_A_X (cpustate->b.D) break; case 0xB3: /* OR A,E */ OR_A_X (cpustate->b.E) break; case 0xB4: /* OR A,H */ OR_A_X (cpustate->b.H) break; case 0xB5: /* OR A,L */ OR_A_X (cpustate->b.L) break; case 0xB6: /* OR A,(HL) */ x = mem_ReadByte (cpustate, cpustate->w.HL); OR_A_X (x) break; case 0xB7: /* OR A,A */ OR_A_X (cpustate->b.A) break; case 0xB8: /* CP A,B */ CP_A_X (cpustate->b.B) break; case 0xB9: /* CP A,C */ CP_A_X (cpustate->b.C) break; case 0xBA: /* CP A,D */ CP_A_X (cpustate->b.D) break; case 0xBB: /* CP A,E */ CP_A_X (cpustate->b.E) break; case 0xBC: /* CP A,H */ CP_A_X (cpustate->b.H) break; case 0xBD: /* CP A,L */ CP_A_X (cpustate->b.L) break; case 0xBE: /* CP A,(HL) */ x = mem_ReadByte (cpustate, cpustate->w.HL); CP_A_X (x) break; case 0xBF: /* CP A,A */ CP_A_X (cpustate->b.A) break; case 0xC0: /* RET NZ */ if (!(cpustate->b.F & FLAG_Z)) { cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; CYCLES_PASSED( 12 ); } break; case 0xC1: /* POP BC */ cpustate->w.BC = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; break; case 0xC2: /* JP NZ,n16 */ if (cpustate->b.F & FLAG_Z) { cpustate->w.PC += 2; } else { cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.PC); CYCLES_PASSED( 4 ); } break; case 0xC3: /* JP n16 */ cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.PC); break; case 0xC4: /* CALL NZ,n16 */ if (cpustate->b.F & FLAG_Z) { cpustate->w.PC += 2; } else { register UINT16 PC; PC = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = PC; CYCLES_PASSED( 12 ); } break; case 0xC5: /* PUSH BC */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.BC); break; case 0xC6: /* ADD A,n8 */ x = mem_ReadByte (cpustate, cpustate->w.PC++); ADD_A_X (x) break; case 0xC7: /* RST 0 */ { register UINT16 PC; PC = cpustate->w.PC; cpustate->w.PC = 0; cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, PC); } break; case 0xC8: /* RET Z */ if (cpustate->b.F & FLAG_Z) { cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; CYCLES_PASSED( 12 ); } break; case 0xC9: /* RET */ cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; break; case 0xCA: /* JP Z,n16 */ if (cpustate->b.F & FLAG_Z) { cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.PC); CYCLES_PASSED( 4 ); } else { cpustate->w.PC += 2; } break; case 0xCB: /* PREFIX! */ x = mem_ReadByte (cpustate, cpustate->w.PC++); CYCLES_PASSED( CyclesCB[x] ); switch (x) { #include "opc_cb.h" } break; case 0xCC: /* CALL Z,n16 */ if (cpustate->b.F & FLAG_Z) { register UINT16 PC; PC = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = PC; CYCLES_PASSED( 12 ); } else { cpustate->w.PC += 2; } break; case 0xCD: /* CALL n16 */ { register UINT16 PC; PC = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = PC; } break; case 0xCE: /* ADC A,n8 */ x = mem_ReadByte (cpustate, cpustate->w.PC++); ADC_A_X (x) break; case 0xCF: /* RST 8 */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = 8; break; case 0xD0: /* RET NC */ if (!(cpustate->b.F & FLAG_C)) { cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; CYCLES_PASSED( 12 ); } break; case 0xD1: /* POP DE */ cpustate->w.DE = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; break; case 0xD2: /* JP NC,n16 */ if (cpustate->b.F & FLAG_C) { cpustate->w.PC += 2; } else { cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.PC); CYCLES_PASSED( 4 ); } break; case 0xD3: /* EH? */ break; case 0xD4: /* CALL NC,n16 */ if (cpustate->b.F & FLAG_C) { cpustate->w.PC += 2; } else { register UINT16 PC; PC = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = PC; CYCLES_PASSED( 12 ); } break; case 0xD5: /* PUSH DE */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.DE); break; case 0xD6: /* SUB A,n8 */ x = mem_ReadByte (cpustate, cpustate->w.PC++); SUB_A_X (x) break; case 0xD7: /* RST $10 */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = 0x10; break; case 0xD8: /* RET C */ if (cpustate->b.F & FLAG_C) { cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; CYCLES_PASSED( 12 ); } break; case 0xD9: /* RETI */ cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; cpustate->w.enable |= IME; break; case 0xDA: /* JP C,n16 */ if (cpustate->b.F & FLAG_C) { cpustate->w.PC = mem_ReadWord (cpustate, cpustate->w.PC); CYCLES_PASSED( 4 ); } else { cpustate->w.PC += 2; } break; case 0xDB: /* EH? */ break; case 0xDC: /* CALL C,n16 */ if (cpustate->b.F & FLAG_C) { register UINT16 PC; PC = mem_ReadWord (cpustate, cpustate->w.PC); cpustate->w.PC += 2; cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = PC; CYCLES_PASSED( 12 ); } else { cpustate->w.PC += 2; } break; case 0xDD: /* EH? */ break; case 0xDE: /* SBC A,n8 */ x = mem_ReadByte (cpustate, cpustate->w.PC++); SBC_A_X (x) break; case 0xDF: /* RST $18 */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = 0x18; break; case 0xE0: /* LD ($FF00+n8),A */ mem_WriteByte (cpustate, mem_ReadByte (cpustate, cpustate->w.PC++) + 0xFF00, cpustate->b.A); break; case 0xE1: /* POP HL */ cpustate->w.HL = mem_ReadWord (cpustate, cpustate->w.SP); cpustate->w.SP += 2; break; case 0xE2: /* LD ($FF00+C),A */ mem_WriteByte (cpustate, (UINT16) (0xFF00 + cpustate->b.C), cpustate->b.A); break; case 0xE3: /* EH? */ break; case 0xE4: /* EH? */ break; case 0xE5: /* PUSH HL */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.HL); break; case 0xE6: /* AND A,n8 */ x = mem_ReadByte (cpustate, cpustate->w.PC++); AND_A_X (x) break; case 0xE7: /* RST $20 */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = 0x20; break; case 0xE8: /* ADD SP,n8 */ /* * Z - Reset. * N - Reset. * H - Set or reset according to operation. * C - Set or reset according to operation. */ { register INT32 n; n = (INT32) ((INT8) mem_ReadByte (cpustate, cpustate->w.PC++)); if ( ( cpustate->w.SP & 0xFF ) + (UINT8)(n & 0xFF) > 0xFF ) { cpustate->b.F = FLAG_C; } else { cpustate->b.F = 0; } if ( ( cpustate->w.SP & 0x0F ) + ( n & 0x0F ) > 0x0F ) { cpustate->b.F |= FLAG_H; } cpustate->w.SP = (UINT16) ( cpustate->w.SP + n ); } break; case 0xE9: /* JP (HL) */ cpustate->w.PC = cpustate->w.HL; break; case 0xEA: /* LD (n16),A */ mem_WriteByte (cpustate, mem_ReadWord (cpustate, cpustate->w.PC), cpustate->b.A); cpustate->w.PC += 2; break; case 0xEB: /* EH? */ break; case 0xEC: /* EH? */ break; case 0xED: /* EH? */ break; case 0xEE: /* XOR A,n8 */ x = mem_ReadByte (cpustate, cpustate->w.PC++); XOR_A_X (x) break; case 0xEF: /* RST $28 */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = 0x28; break; case 0xF0: /* LD A,($FF00+n8) */ cpustate->b.A = mem_ReadByte (cpustate, 0xFF00 + mem_ReadByte (cpustate, cpustate->w.PC++)); break; case 0xF1: /* POP AF */ cpustate->w.AF = (UINT16) (mem_ReadWord (cpustate, cpustate->w.SP) & 0xFFF0); cpustate->w.SP += 2; break; case 0xF2: /* LD A,($FF00+C) */ cpustate->b.A = mem_ReadByte (cpustate, (UINT16) (0xFF00 + cpustate->b.C)); break; case 0xF3: /* DI */ cpustate->w.ei_delay = 0; cpustate->w.enable &= ~IME; break; case 0xF4: /* EH? */ break; case 0xF5: /* PUSH AF */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, (UINT16) (cpustate->w.AF & 0xFFF0)); break; case 0xF6: /* OR A,n8 */ x = mem_ReadByte (cpustate, cpustate->w.PC++); OR_A_X (x) break; case 0xF7: /* RST $30 */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = 0x30; break; case 0xF8: /* LD HL,SP+n8 */ /* * n = one UINT8 signed immediate value. * Flags affected: * Z - Reset. * N - Reset. * H - Set or reset according to operation. * C - Set or reset according to operation. * */ { register INT32 n; n = (INT32) ((INT8) mem_ReadByte (cpustate, cpustate->w.PC++)); if ( ( cpustate->w.SP & 0xFF ) + (UINT8)(n & 0xFF) > 0xFF ) { cpustate->b.F = FLAG_C; } else { cpustate->b.F = 0; } if ( ( cpustate->w.SP & 0x0F ) + ( n & 0x0F ) > 0x0F ) { cpustate->b.F |= FLAG_H; } cpustate->w.HL = (UINT16) ( cpustate->w.SP + n ); } break; case 0xF9: /* LD SP,HL */ cpustate->w.SP = cpustate->w.HL; break; case 0xFA: /* LD A,(n16) */ cpustate->b.A = mem_ReadByte (cpustate, mem_ReadWord (cpustate, cpustate->w.PC)); cpustate->w.PC += 2; break; case 0xFB: /* EI */ cpustate->w.enable |= IME; cpustate->w.ei_delay = 1; break; case 0xFC: /* EH? */ break; case 0xFD: /* EH? */ break; case 0xFE: /* CP A,n8 */ x = mem_ReadByte (cpustate, cpustate->w.PC++); CP_A_X (x) break; case 0xFF: /* RST $38 */ cpustate->w.SP -= 2; mem_WriteWord (cpustate, cpustate->w.SP, cpustate->w.PC); cpustate->w.PC = 0x38; break;