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GBA SIO: Fix missing interrupt on an unattached NORMAL transfer

This commit is contained in:
Vicki Pfau 2021-06-15 20:42:48 -07:00
parent 0c1dd64e5b
commit 8c3f7eb228
2 changed files with 14 additions and 4 deletions
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1
CHANGES
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@ -9,6 +9,7 @@ Features:
Emulation fixes:
- GB Video: Clear VRAM on reset (fixes mgba.io/i/2152)
- GBA SIO: Add missing NORMAL8 implementation bits (fixes mgba.io/i/2172)
- GBA SIO: Fix missing interrupt on an unattached NORMAL transfer
- GBA Video: Revert scanline latching changes (fixes mgba.io/i/2153, mgba.io/i/2149)
Other fixes:
- 3DS: Fix disabling "wide" mode on 2DS (fixes mgba.io/i/2167)

17
src/gba/sio/lockstep.c
View File

@ -442,11 +442,22 @@ static void _GBASIOLockstepNodeProcessEvents(struct mTiming* timing, void* user,
struct GBASIOLockstepNode* node = user;
mLockstepLock(&node->p->d);
int32_t cycles = 0;
int32_t cycles = cycles = node->nextEvent;
node->nextEvent -= cyclesLate;
node->eventDiff += cyclesLate;
if (node->p->d.attached < 2) {
cycles = GBASIOCyclesPerTransfer[GBASIOMultiplayerGetBaud(node->d.p->siocnt)][0];
switch (node->mode) {
case SIO_MULTI:
cycles = GBASIOCyclesPerTransfer[GBASIOMultiplayerGetBaud(node->d.p->siocnt)][0];
break;
case SIO_NORMAL_8:
case SIO_NORMAL_32:
if (node->nextEvent <= 0) {
cycles = _masterUpdate(node);
node->eventDiff = 0;
}
break;
}
} else if (node->nextEvent <= 0) {
if (!node->id) {
cycles = _masterUpdate(node);
@ -455,8 +466,6 @@ static void _GBASIOLockstepNodeProcessEvents(struct mTiming* timing, void* user,
cycles += node->p->d.useCycles(&node->p->d, node->id, node->eventDiff);
}
node->eventDiff = 0;
} else {
cycles = node->nextEvent;
}
if (cycles > 0) {
node->nextEvent = 0;