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Emulate zero page wrap for zp,x addressing.

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Radosław Kujawa
2018-03-28 13:46:06 +02:00
parent 0b2be69481
commit 260ac09c01
1 changed files with 1 additions and 2 deletions
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3
src/instruction.c
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@@ -283,8 +283,7 @@ instruction_data_write_1(rk65c02emu_t *e, instrdef_t *id, instruction_t *i, uint
bus_write_1(e->bus, i->op1, val); bus_write_1(e->bus, i->op1, val);
break; break;
case ZPX: case ZPX:
/* XXX: wraps around zero page? */ bus_write_1(e->bus, (uint8_t) (i->op1 + e->regs.X), val);
bus_write_1(e->bus, i->op1 + e->regs.X, val);
break; break;
case ZPY: case ZPY:
bus_write_1(e->bus, i->op1 + e->regs.Y, val); bus_write_1(e->bus, i->op1 + e->regs.Y, val);