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Fix sign extensions from vipRead() and busReadMisc()

This commit is contained in:
Guy Perfect 2025-01-15 19:47:44 -06:00
parent 57dcd8370a
commit 04e79c9151
1 changed files with 6 additions and 0 deletions
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6
core/bus.c
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@ -153,12 +153,18 @@ static void busRead(VB *sim, uint32_t address, int type, int32_t *value) {
case 0: /* VIP */ case 0: /* VIP */
vipRead(sim, address, type, value); vipRead(sim, address, type, value);
switch (type) {
case VB_S8 : *value = (int8_t ) *value; break;
case VB_S16: *value = (int16_t) *value; break;
}
break; break;
case 1: break; /* VSU */ case 1: break; /* VSU */
case 2: /* Misc. I/O */ case 2: /* Misc. I/O */
*value = busReadMisc(sim, address, type); *value = busReadMisc(sim, address, type);
if (type == VB_S8)
*value = (int8_t) *value;
break; break;
case 3: break; /* Unmapped */ case 3: break; /* Unmapped */