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Radosław Kujawa 2017-01-30 21:24:45 +01:00
parent 5554de9411
commit 1c72bd23a8
1 changed files with 11 additions and 2 deletions
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13
src/instruction.c
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@ -211,7 +211,11 @@ instruction_data_write_1(rk65c02emu_t *e, instrdef_t *id, instruction_t *i, uint
e->regs.A = val; e->regs.A = val;
break; break;
case ZPR: case ZPR:
/* XXX */ /*
* This mode is special as both operands have separate meaning.
* Handled withing emulation, as it is used only by BBS and BBR.
*/
assert(false);
break; break;
case IMMEDIATE: case IMMEDIATE:
case RELATIVE: case RELATIVE:
@ -281,7 +285,12 @@ instruction_data_read_1(rk65c02emu_t *e, instrdef_t *id, instruction_t *i)
rv = bus_read_1(e->bus, (i->op1 + (i->op2 << 8)) + e->regs.Y); rv = bus_read_1(e->bus, (i->op1 + (i->op2 << 8)) + e->regs.Y);
break; break;
case ZPR: case ZPR:
/* XXX */ /*
* This mode is special as both operands have separate meaning.
* Handled withing emulation, as it is used only by BBS and BBR.
*/
assert(false);
break;
case IABSOLUTE: case IABSOLUTE:
case IABSOLUTEX: case IABSOLUTEX:
case RELATIVE: case RELATIVE: