6502/emu6502
1
0
Fork 0
mirror of https://github.com/jborza/emu6502.git synced 2024-11-21 23:31:19 +00:00
Code Issues Projects Releases Wiki Activity

disassembler outputting branch target address

Browse Source
This commit is contained in:
jborza 2019-05-04 15:24:58 +02:00
parent 5dee89df61
commit 80b1af1a30
1 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
disassembler.c
View File

@ -32,14 +32,14 @@ char* disassemble_6502_to_string(byte* buffer, word pc) {
case ASL_ZPX: sprintf(op, "ASL $%02X,X", code[1]); bytes = 2; break; case ASL_ZPX: sprintf(op, "ASL $%02X,X", code[1]); bytes = 2; break;
case ASL_ABS: sprintf(op, "ASL $%02X%02X", code[2], code[1]); bytes = 3; break; case ASL_ABS: sprintf(op, "ASL $%02X%02X", code[2], code[1]); bytes = 3; break;
case ASL_ABSX: sprintf(op, "ASL $%02X%02X,X", code[2], code[1]); bytes = 3; break; case ASL_ABSX: sprintf(op, "ASL $%02X%02X,X", code[2], code[1]); bytes = 3; break;
case BCC_REL: sprintf(op, "BCC $%02X", code[1]); bytes = 2; break; case BCC_REL: sprintf(op, "BCC $%04X", pc + 2 + (int8_t)code[1]); bytes = 2; break;
case BCS_REL: sprintf(op, "BCS $%02X", code[1]); bytes = 2; break; case BCS_REL: sprintf(op, "BCS $%04X", pc + 2 + (int8_t)code[1]); bytes = 2; break;
case BEQ_REL: sprintf(op, "BEQ $%02X", code[1]); bytes = 2; break; case BEQ_REL: sprintf(op, "BEQ $%04X", pc + 2 + (int8_t)code[1]); bytes = 2; break;
case BMI_REL: sprintf(op, "BMI $%02X", code[1]); bytes = 2; break; case BMI_REL: sprintf(op, "BMI $%04X", pc + 2 + (int8_t)code[1]); bytes = 2; break;
case BNE_REL: sprintf(op, "BNE $%02X", code[1]); bytes = 2; break; case BNE_REL: sprintf(op, "BNE $%04X", pc + 2 + (int8_t)code[1]); bytes = 2; break;
case BPL_REL: sprintf(op, "BPL $%02X", code[1]); bytes = 2; break; case BPL_REL: sprintf(op, "BPL $%04X", pc + 2 + (int8_t)code[1]); bytes = 2; break;
case BVC_REL: sprintf(op, "BVC $%02X", code[1]); bytes = 2; break; case BVC_REL: sprintf(op, "BVC $%04X", pc + 2 + (int8_t)code[1]); bytes = 2; break;
case BVS_REL: sprintf(op, "BVS $%02X", code[1]); bytes = 2; break; case BVS_REL: sprintf(op, "BVS $%04X", pc + 2 + (int8_t)code[1]); bytes = 2; break;
case BIT_ZP: sprintf(op, "BIT $%02X", code[1]); bytes = 2; break; case BIT_ZP: sprintf(op, "BIT $%02X", code[1]); bytes = 2; break;
case BIT_ABS: sprintf(op, "BIT $%02X%02X", code[2], code[1]); bytes = 3; break; case BIT_ABS: sprintf(op, "BIT $%02X%02X", code[2], code[1]); bytes = 3; break;
case BRK: sprintf(op, "BRK"); break; case BRK: sprintf(op, "BRK"); break;
@ -168,8 +168,11 @@ char* disassemble_6502_to_string(byte* buffer, word pc) {
sprintf(op, "UNKNOWN %02x", *code); sprintf(op, "UNKNOWN %02x", *code);
} }
char arg1[3]; char arg1[5];
if (bytes > 1) { if (bytes > 1) {
/*if (op == BCC_REL || op == BEQ_REL || op == BMI_REL || op == BPL_REL || op == BVS_REL || op == BCS_REL || op == BNE_REL || op == BVC_REL) {
sprintf(arg1, "%04X", code[1]);
}*/
sprintf(arg1,"%02X", code[1]); sprintf(arg1,"%02X", code[1]);
} }
else { else {