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Prevent non-debug writes to CTA

This commit is contained in:
Guy Perfect 2024-12-23 09:56:54 -06:00
parent 18b2c589e6
commit d802d39d8d
2 changed files with 10 additions and 4 deletions
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10
core/vip.c
View File

@ -481,10 +481,12 @@ static void vipWriteIO(
break;
case 0x5F830>>1: /* CTA */
if ((mask & 0xFF00) == 0)
sim->vip.cta.cta_r = value >> 8;
if ((mask & 0x00FF) == 0)
sim->vip.cta.cta_l = value;
if (debug) {
if ((mask & 0xFF00) == 0)
sim->vip.cta.cta_r = value >> 8;
if ((mask & 0x00FF) == 0)
sim->vip.cta.cta_l = value;
}
break;
case 0x5F842>>1: /* XPCTRL */

4
util/disassembler.c
View File

@ -513,6 +513,8 @@ static int dasmLine(VB *sim, uint32_t *address, uint32_t pc,
line->isPC = *address == pc;
for (x = 0; x < line->codeLength; x++)
line->code[x] = vbRead(sim, *address + x, VB_U8);
/* Advance to the next instruction or PC, whichever is sooner */
*address += pc != *address && pc - *address < line->codeLength ?
pc - *address : line->codeLength;
@ -657,6 +659,8 @@ static VBU_DasmLine* dasmDisassemble(VB *sim, uint32_t address,
size = vbuCodeSize(sim, addr);
if (address - addr < size)
break;
/* Advance to the next instruction or PC, whichever is sooner */
addr += addr != pc && pc - addr < size ? pc - addr : size;
}