mirror of
https://github.com/jborza/emu6502.git
synced 2024-06-08 07:29:32 +00:00
complete set of opcodes in header and disassembler
This commit is contained in:
jborza
parent
babb1fc507
commit
6cd265c578
176
disassembler.c
176
disassembler.c
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@ -7,31 +7,169 @@ void disassemble_6502(byte* buffer, word pc) {
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printf("%04d ", pc);
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byte* code = &buffer[pc];
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int bytes = 1;
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char op[128];
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char op[128] = "";
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switch (*code) {
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case 0x00: sprintf(op,"BRK"); break;
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case ORA_IMM: sprintf(op, "ORA #$%02x", code[1]); break;
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case ORA_ZP: sprintf(op, "ORA $%02x", code[1]); break;
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case ORA_ZPX: sprintf(op, "ORA $%02x,X", code[1]); break;
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case ORA_ABS: sprintf(op, "ORA $%02x%02x", code[2], code[1]); break;
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case ORA_ABSX: sprintf(op, "ORA $%02x%02x,X", code[2], code[1]); break;
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case ORA_ABSY: sprintf(op, "ORA $%02x%02x,Y", code[2], code[1]); break;
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case ORA_INDX: sprintf(op, "ORA ($%02x,X)", code[1]); break;
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case ORA_INDY: sprintf(op, "ORA ($%02x),Y", code[1]); break;
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case LDA_IMM: sprintf(op, "LDA #$%02x", code[1]); break;
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case LDA_ZP: sprintf(op, "LDA $%02x", code[1]); break;
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case LDA_ZPX: sprintf(op, "LDA $%02x,X", code[1]); break;
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case LDA_ABS: sprintf(op, "LDA $%02x%02x", code[2], code[1]); break;
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case LDA_ABSX: sprintf(op, "LDA $%02x%02x,X", code[2], code[1]); break;
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case LDA_ABSY: sprintf(op, "LDA $%02x%02x,Y", code[2], code[1]); break;
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case LDA_INDX: sprintf(op, "LDA ($%02x,X)", code[1]); break;
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case LDA_INDY: sprintf(op, "LDA ($%02x),Y", code[1]); break;
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case 0xEA: printf("NOP"); break;
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case ADC_IMM: sprintf(op, "ADC #$%02X", code[1]); bytes = 2; break;
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case ADC_ZP: sprintf(op, "ADC $%02X", code[1]); bytes = 2; break;
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case ADC_ZPX: sprintf(op, "ADC $%02X,X", code[1]); bytes = 2; break;
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case ADC_ABS: sprintf(op, "ADC $%02X%02X", code[2], code[1]); bytes = 3; break;
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case ADC_ABSX: sprintf(op, "ADC $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case ADC_ABSY: sprintf(op, "ADC $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case ADC_INDX: sprintf(op, "ADC ($%02X,X)", code[1]); bytes = 2; break;
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case ADC_INDY: sprintf(op, "ADC ($%02X),Y", code[1]); bytes = 2; break;
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case AND_IMM: sprintf(op, "AND #$%02X", code[1]); bytes = 2; break;
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case AND_ZP: sprintf(op, "AND $%02X", code[1]); bytes = 2; break;
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case AND_ZPX: sprintf(op, "AND $%02X,X", code[1]); bytes = 2; break;
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case AND_ABS: sprintf(op, "AND $%02X%02X", code[2], code[1]); bytes = 3; break;
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case AND_ABSX: sprintf(op, "AND $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case AND_ABSY: sprintf(op, "AND $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case AND_INDX: sprintf(op, "AND ($%02X,X)", code[1]); bytes = 2; break;
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case AND_INDY: sprintf(op, "AND ($%02X),Y", code[1]); bytes = 2; break;
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case ASL_ACC: sprintf(op, "ASL A"); break;
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case ASL_ZP: sprintf(op, "ASL $%02X", code[1]); bytes = 2; break;
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case ASL_ZPX: sprintf(op, "ASL $%02X,X", code[1]); bytes = 2; break;
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case ASL_ABS: sprintf(op, "ASL $%02X%02X", code[2], code[1]); bytes = 3; break;
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case ASL_ABSX: sprintf(op, "ASL $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case BCC_REL: sprintf(op, "BCC $%02X", code[1]); bytes = 2; break;
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case BCS_REL: sprintf(op, "BCS $%02X", code[1]); bytes = 2; break;
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case BEQ_REL: sprintf(op, "BEQ $%02X", code[1]); bytes = 2; break;
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case BMI_REL: sprintf(op, "BMI $%02X", code[1]); bytes = 2; break;
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case BNE_REL: sprintf(op, "BNE $%02X", code[1]); bytes = 2; break;
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case BPL_REL: sprintf(op, "BPL $%02X", code[1]); bytes = 2; break;
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case BVC_REL: sprintf(op, "BVC $%02X", code[1]); bytes = 2; break;
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case BVS_REL: sprintf(op, "BVS $%02X", code[1]); bytes = 2; break;
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case BIT_ZP: sprintf(op, "BIT $%02X", code[1]); bytes = 2; break;
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case BIT_ABS: sprintf(op, "BIT $%02X%02X", code[2], code[1]); bytes = 3; break;
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case BRK: sprintf(op, "BRK"); break;
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case CLC: sprintf(op, "CLC"); break;
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case CLD: sprintf(op, "CLD"); break;
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case CLI: sprintf(op, "CLI"); break;
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case CLV: sprintf(op, "CLV"); break;
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case NOP: sprintf(op, "NOP"); break;
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case PHA: sprintf(op, "PHA"); break;
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case PLA: sprintf(op, "PLA"); break;
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case PHP: sprintf(op, "PHP"); break;
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case PLP: sprintf(op, "PLP"); break;
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case RTI: sprintf(op, "RTI"); break;
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case RTS: sprintf(op, "RTS"); break;
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case SEC: sprintf(op, "SEC"); break;
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case SED: sprintf(op, "SED"); break;
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case SEI: sprintf(op, "SEI"); break;
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case TAX: sprintf(op, "TAX"); break;
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case TXA: sprintf(op, "TXA"); break;
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case TAY: sprintf(op, "TAY"); break;
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case TYA: sprintf(op, "TYA"); break;
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case TSX: sprintf(op, "TSX"); break;
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case TXS: sprintf(op, "TXS"); break;
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case CMP_IMM: sprintf(op, "CMP #$%02X", code[1]); bytes = 2; break;
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case CMP_ZP: sprintf(op, "CMP $%02X", code[1]); bytes = 2; break;
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case CMP_ZPX: sprintf(op, "CMP $%02X,X", code[1]); bytes = 2; break;
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case CMP_ABS: sprintf(op, "CMP $%02X%02X", code[2], code[1]); bytes = 3; break;
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case CMP_ABSX: sprintf(op, "CMP $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case CMP_ABSY: sprintf(op, "CMP $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case CMP_INDX: sprintf(op, "CMP ($%02X,X)", code[1]); bytes = 2; break;
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case CMP_INDY: sprintf(op, "CMP ($%02X),Y", code[1]); bytes = 2; break;
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case CPX_IMM: sprintf(op, "CPX #$%02X", code[1]); bytes = 2; break;
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case CPX_ZP: sprintf(op, "CPX $%02X", code[1]); bytes = 2; break;
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case CPX_ABS: sprintf(op, "CPX $%02X%02X", code[2], code[1]); bytes = 3; break;
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case CPY_IMM: sprintf(op, "CPY #$%02X", code[1]); bytes = 2; break;
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case CPY_ZP: sprintf(op, "CPY $%02X", code[1]); bytes = 2; break;
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case CPY_ABS: sprintf(op, "CPY $%02X%02X", code[2], code[1]); bytes = 3; break;
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case DEC_ZP: sprintf(op, "DEC $%02X", code[1]); bytes = 2; break;
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case DEC_ZPX: sprintf(op, "DEC $%02X,X", code[1]); bytes = 2; break;
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case DEC_ABS: sprintf(op, "DEC $%02X%02X", code[2], code[1]); bytes = 3; break;
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case DEC_ABSX: sprintf(op, "DEC $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case DEX: sprintf(op, "DEX"); break;
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case DEY: sprintf(op, "DEY"); break;
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case INX: sprintf(op, "INX"); break;
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case INY: sprintf(op, "INY"); break;
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case EOR_IMM: sprintf(op, "EOR #$%02X", code[1]); bytes = 2; break;
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case EOR_ZP: sprintf(op, "EOR $%02X", code[1]); bytes = 2; break;
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case EOR_ZPX: sprintf(op, "EOR $%02X,X", code[1]); bytes = 2; break;
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case EOR_ABS: sprintf(op, "EOR $%02X%02X", code[2], code[1]); bytes = 3; break;
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case EOR_ABSX: sprintf(op, "EOR $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case EOR_ABSY: sprintf(op, "EOR $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case EOR_INDX: sprintf(op, "EOR ($%02X,X)", code[1]); bytes = 2; break;
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case EOR_INDY: sprintf(op, "EOR ($%02X),Y", code[1]); bytes = 2; break;
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case INC_ZP: sprintf(op, "INC $%02X", code[1]); bytes = 2; break;
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case INC_ZPX: sprintf(op, "INC $%02X,X", code[1]); bytes = 2; break;
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case INC_ABS: sprintf(op, "INC $%02X%02X", code[2], code[1]); bytes = 3; break;
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case INC_ABSX: sprintf(op, "INC $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case JMP_ABS: sprintf(op, "JMP $%02X%02X", code[2], code[1]); bytes = 3; break;
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case JMP_IND: sprintf(op, "JMP ($%02X%02X)", code[2], code[1]); bytes = 3; break;
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case JSR_ABS: sprintf(op, "JSR $%02X%02X", code[2], code[1]); bytes = 3; break;
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case LDA_IMM: sprintf(op, "LDA #$%02X", code[1]); bytes = 2; break;
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case LDA_ZP: sprintf(op, "LDA $%02X", code[1]); bytes = 2; break;
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case LDA_ZPX: sprintf(op, "LDA $%02X,X", code[1]); bytes = 2; break;
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case LDA_ABS: sprintf(op, "LDA $%02X%02X", code[2], code[1]); bytes = 3; break;
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case LDA_ABSX: sprintf(op, "LDA $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case LDA_ABSY: sprintf(op, "LDA $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case LDA_INDX: sprintf(op, "LDA ($%02X,X)", code[1]); bytes = 2; break;
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case LDA_INDY: sprintf(op, "LDA ($%02X),Y", code[1]); bytes = 2; break;
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case LDX_IMM: sprintf(op, "LDX #$%02X", code[1]); bytes = 2; break;
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case LDX_ZP: sprintf(op, "LDX $%02X", code[1]); bytes = 2; break;
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case LDX_ZPY: sprintf(op, "LDX $%02X,Y", code[1]); bytes = 2; break;
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case LDX_ABS: sprintf(op, "LDX $%02X%02X", code[2], code[1]); bytes = 3; break;
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case LDX_ABSY: sprintf(op, "LDX $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case LDY_IMM: sprintf(op, "LDY #$%02X", code[1]); bytes = 2; break;
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case LDY_ZP: sprintf(op, "LDY $%02X", code[1]); bytes = 2; break;
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case LDY_ZPX: sprintf(op, "LDY $%02X,X", code[1]); bytes = 2; break;
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case LDY_ABS: sprintf(op, "LDY $%02X%02X", code[2], code[1]); bytes = 3; break;
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case LDY_ABSX: sprintf(op, "LDY $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case LSR_ACC: sprintf(op, "LSR A"); break;
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case LSR_ZP: sprintf(op, "LSR $%02X", code[1]); bytes = 2; break;
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case LSR_ZPX: sprintf(op, "LSR $%02X,X", code[1]); bytes = 2; break;
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case LSR_ABS: sprintf(op, "LSR $%02X%02X", code[2], code[1]); bytes = 3; break;
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case LSR_ABSX: sprintf(op, "LSR $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case ORA_IMM: sprintf(op, "ORA #$%02X", code[1]); bytes = 2; break;
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case ORA_ZP: sprintf(op, "ORA $%02X", code[1]); bytes = 2; break;
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case ORA_ZPX: sprintf(op, "ORA $%02X,X", code[1]); bytes = 2; break;
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case ORA_ABS: sprintf(op, "ORA $%02X%02X", code[2], code[1]); bytes = 3; break;
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case ORA_ABSX: sprintf(op, "ORA $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case ORA_ABSY: sprintf(op, "ORA $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case ORA_INDX: sprintf(op, "ORA ($%02X,X)", code[1]); bytes = 2; break;
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case ORA_INDY: sprintf(op, "ORA ($%02X),Y", code[1]); bytes = 2; break;
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case ROL_ACC: sprintf(op, "ROL A"); break;
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case ROL_ZP: sprintf(op, "ROL $%02X", code[1]); bytes = 2; break;
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case ROL_ZPX: sprintf(op, "ROL $%02X,X", code[1]); bytes = 2; break;
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case ROL_ABS: sprintf(op, "ROL $%02X%02X", code[2], code[1]); bytes = 3; break;
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case ROL_ABSX: sprintf(op, "ROL $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case ROR_ACC: sprintf(op, "ROR A"); break;
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case ROR_ZP: sprintf(op, "ROR $%02X", code[1]); bytes = 2; break;
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case ROR_ZPX: sprintf(op, "ROR $%02X,X", code[1]); bytes = 2; break;
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case ROR_ABS: sprintf(op, "ROR $%02X%02X", code[2], code[1]); bytes = 3; break;
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case ROR_ABSX: sprintf(op, "ROR $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case SBC_IMM: sprintf(op, "SBC #$%02X", code[1]); bytes = 2; break;
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case SBC_ZP: sprintf(op, "SBC $%02X", code[1]); bytes = 2; break;
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case SBC_ZPX: sprintf(op, "SBC $%02X,X", code[1]); bytes = 2; break;
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case SBC_ABS: sprintf(op, "SBC $%02X%02X", code[2], code[1]); bytes = 3; break;
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case SBC_ABSX: sprintf(op, "SBC $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case SBC_ABSY: sprintf(op, "SBC $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case SBC_INDX: sprintf(op, "SBC ($%02X,X)", code[1]); bytes = 2; break;
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case SBC_INDY: sprintf(op, "SBC ($%02X),Y", code[1]); bytes = 2; break;
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case STA_ZP: sprintf(op, "STA $%02X", code[1]); bytes = 2; break;
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case STA_ZPX: sprintf(op, "STA $%02X,X", code[1]); bytes = 2; break;
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case STA_ABS: sprintf(op, "STA $%02X%02X", code[2], code[1]); bytes = 3; break;
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case STA_ABSX: sprintf(op, "STA $%02X%02X,X", code[2], code[1]); bytes = 3; break;
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case STA_ABSY: sprintf(op, "STA $%02X%02X,Y", code[2], code[1]); bytes = 3; break;
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case STA_INDX: sprintf(op, "STA ($%02X,X)", code[1]); bytes = 2; break;
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case STA_INDY: sprintf(op, "STA ($%02X),Y", code[1]); bytes = 2; break;
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case STX_ZP: sprintf(op, "STX $%02X", code[1]); bytes = 2; break;
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case STX_ZPY: sprintf(op, "STX $%02X,Y", code[1]); bytes = 2; break;
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case STX_ABS: sprintf(op, "STX $%02X%02X", code[2], code[1]); bytes = 3; break;
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case STY_ZP: sprintf(op, "STY $%02X", code[1]); bytes = 2; break;
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case STY_ZPX: sprintf(op, "STY $%02X,X", code[1]); bytes = 2; break;
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case STY_ABS: sprintf(op, "STY $%02X%02X", code[2], code[1]); bytes = 3; break;
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default:
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printf("UNKNOWN %02x", *code);
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}
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//print opcode
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printf("%02X ", *code);
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if (bytes > 1) {
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printf("%02x ", code[1]);
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}
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155
opcodes.h
155
opcodes.h
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@ -1,20 +1,153 @@
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#pragma once
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#define ADC_IMM 0x69
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#define ADC_ZP 0x65
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#define ADC_ZPX 0x75
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#define ADC_ABS 0x6d
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#define ADC_ABSX 0x7d
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#define ADC_ABSY 0x79
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#define ADC_INDX 0x61
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#define ADC_INDY 0x71
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#define AND_IMM 0x29
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#define AND_ZP 0x25
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#define AND_ZPX 0x35
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#define AND_ABS 0x2d
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#define AND_ABSX 0x3d
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#define AND_ABSY 0x39
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#define AND_INDX 0x21
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#define AND_INDY 0x31
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#define ASL_ACC 0x0a
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#define ASL_ZP 0x06
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#define ASL_ZPX 0x16
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#define ASL_ABS 0x0e
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#define ASL_ABSX 0x1e
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#define BCC_REL 0x90
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#define BCS_REL 0xB0
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#define BEQ_REL 0xF0
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#define BMI_REL 0x30
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#define BNE_REL 0xD0
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#define BPL_REL 0x10
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#define BVC_REL 0x50
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#define BVS_REL 0x70
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#define BIT_ZP 0x24
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#define BIT_ABS 0x2c
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#define BRK 0x00
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#define CLC 0x18
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#define CLD 0xd8
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#define CLI 0x58
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#define CLV 0xb8
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#define NOP 0xea
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#define PHA 0x48
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#define PLA 0x68
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#define PHP 0x08
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#define PLP 0x28
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#define RTI 0x40
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#define RTS 0x60
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#define SEC 0x38
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#define SED 0xf8
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#define SEI 0x78
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#define TAX 0xaa
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#define TXA 0x8a
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#define TAY 0xa8
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#define TYA 0x98
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#define TSX 0xba
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#define TXS 0x9a
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#define CMP_IMM 0xc9
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#define CMP_ZP 0xc5
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#define CMP_ZPX 0xd5
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#define CMP_ABS 0xcd
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#define CMP_ABSX 0xdd
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#define CMP_ABSY 0xd9
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#define CMP_INDX 0xc1
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#define CMP_INDY 0xd1
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#define CPX_IMM 0xe0
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#define CPX_ZP 0xe4
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#define CPX_ABS 0xec
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#define CPY_IMM 0xc0
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#define CPY_ZP 0xc4
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#define CPY_ABS 0xcc
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#define DEC_ZP 0xc6
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#define DEC_ZPX 0xd6
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#define DEC_ABS 0xce
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#define DEC_ABSX 0xde
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#define DEX 0xca
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#define DEY 0x88
|
||||
#define INX 0xe8
|
||||
#define INY 0xc8
|
||||
#define EOR_IMM 0x49
|
||||
#define EOR_ZP 0x45
|
||||
#define EOR_ZPX 0x55
|
||||
#define EOR_ABS 0x4d
|
||||
#define EOR_ABSX 0x5d
|
||||
#define EOR_ABSY 0x59
|
||||
#define EOR_INDX 0x41
|
||||
#define EOR_INDY 0x51
|
||||
#define INC_ZP 0xe6
|
||||
#define INC_ZPX 0xf6
|
||||
#define INC_ABS 0xee
|
||||
#define INC_ABSX 0xfe
|
||||
#define JMP_ABS 0x4c
|
||||
#define JMP_IND 0x6c
|
||||
#define JSR_ABS 0x20
|
||||
#define LDA_IMM 0xa9
|
||||
#define LDA_ZP 0xa5
|
||||
#define LDA_ZPX 0xb5
|
||||
#define LDA_ABS 0xad
|
||||
#define LDA_ABSX 0xbd
|
||||
#define LDA_ABSY 0xb9
|
||||
#define LDA_INDX 0xa1
|
||||
#define LDA_INDY 0xb1
|
||||
#define LDX_IMM 0xa2
|
||||
#define LDX_ZP 0xa6
|
||||
#define LDX_ZPY 0xb6
|
||||
#define LDX_ABS 0xae
|
||||
#define LDX_ABSY 0xbe
|
||||
#define LDY_IMM 0xa0
|
||||
#define LDY_ZP 0xa4
|
||||
#define LDY_ZPX 0xb4
|
||||
#define LDY_ABS 0xac
|
||||
#define LDY_ABSX 0xbc
|
||||
#define LSR_ACC 0x4a
|
||||
#define LSR_ZP 0x46
|
||||
#define LSR_ZPX 0x56
|
||||
#define LSR_ABS 0x4e
|
||||
#define LSR_ABSX 0x5e
|
||||
#define ORA_IMM 0x09
|
||||
#define ORA_ZP 0x05
|
||||
#define ORA_ZPX 0x15
|
||||
#define ORA_ABS 0x0D
|
||||
#define ORA_ABSX 0x1D
|
||||
#define ORA_ABS 0x0d
|
||||
#define ORA_ABSX 0x1d
|
||||
#define ORA_ABSY 0x19
|
||||
#define ORA_INDX 0x01
|
||||
#define ORA_INDY 0x11
|
||||
#define NOP 0xEA
|
||||
#define LDA_IMM 0xA9
|
||||
#define LDA_ZP 0xA5
|
||||
#define LDA_ZPX 0xB5
|
||||
#define LDA_ABS 0xAD
|
||||
#define LDA_ABSX 0xBD
|
||||
#define LDA_ABSY 0xB9
|
||||
#define LDA_INDX 0xA1
|
||||
#define LDA_INDY 0xB1
|
||||
#define ROL_ACC 0x2a
|
||||
#define ROL_ZP 0x26
|
||||
#define ROL_ZPX 0x36
|
||||
#define ROL_ABS 0x2e
|
||||
#define ROL_ABSX 0x3e
|
||||
#define ROR_ACC 0x6a
|
||||
#define ROR_ZP 0x66
|
||||
#define ROR_ZPX 0x76
|
||||
#define ROR_ABS 0x7e
|
||||
#define ROR_ABSX 0x6e
|
||||
#define SBC_IMM 0xe9
|
||||
#define SBC_ZP 0xe5
|
||||
#define SBC_ZPX 0xf5
|
||||
#define SBC_ABS 0xed
|
||||
#define SBC_ABSX 0xfd
|
||||
#define SBC_ABSY 0xf9
|
||||
#define SBC_INDX 0xe1
|
||||
#define SBC_INDY 0xf1
|
||||
#define STA_ZP 0x85
|
||||
#define STA_ZPX 0x95
|
||||
#define STA_ABS 0x8d
|
||||
#define STA_ABSX 0x9d
|
||||
#define STA_ABSY 0x99
|
||||
#define STA_INDX 0x81
|
||||
#define STA_INDY 0x91
|
||||
#define STX_ZP 0x86
|
||||
#define STX_ZPY 0x96
|
||||
#define STX_ABS 0x8e
|
||||
#define STY_ZP 0x84
|
||||
#define STY_ZPX 0x94
|
||||
#define STY_ABS 0x8c
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user