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25 lines
832 B
C
25 lines
832 B
C
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#pragma once
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#include "types.h"
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#include "opcodes.h"
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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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switch (*code) {
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case 0x00: printf("BRK"); break;
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case ORA_IND_X: printf("ORA ($%02x,X)", code[1]); break;
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case ORA_IND_Y: printf("ORA ($%02x),Y", code[1]); break;
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case ORA_ZP: printf("ORA $%02x", code[1]); break;
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case ORA_IMM: printf("ORA #$%02x", code[1]); break;
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case ORA_ZP_X: printf("ORA $%02x,X", code[1]); break;
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case ORA_ABS: printf("ORA $%02x%02x", code[2], code[1]); break;
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case ORA_ABS_X: printf("ORA $%02x%02x,X", code[2], code[1]); break;
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case ORA_ABS_Y: printf("ORA $%02x%02x,Y", code[2], code[1]); break;
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case LDA_IMM: printf("LDA #$%02x", code[1]); break;
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case 0xEA: printf("NOP"); break;
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default:
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printf("UNKNOWN %02x", *code);
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}
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printf("\n");
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}
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