GB Video: Only trigger STAT write IRQs when screen is on (fixes #912)
Vicki Pfau vi@endrift.com
Wed, 18 Oct 2017 09:19:10 -0700
2 files changed,
5 insertions(+),
1 deletions(-)
M
src/gb/video.c
→
src/gb/video.c
@@ -373,7 +373,10 @@
void GBVideoWriteSTAT(struct GBVideo* video, GBRegisterSTAT value) { GBRegisterSTAT oldStat = video->stat; video->stat = (video->stat & 0x7) | (value & 0x78); - if (video->p->model == GB_MODEL_DMG && !_statIRQAsserted(video, oldStat) && video->mode < 3) { + if (!GBRegisterLCDCIsEnable(video->p->memory.io[REG_LCDC]) || video->p->model >= GB_MODEL_CGB) { + return; + } + if (!_statIRQAsserted(video, oldStat) && video->mode < 3) { // TODO: variable for the IRQ line value? video->p->memory.io[REG_IF] |= (1 << GB_IRQ_LCDSTAT); GBUpdateIRQs(video->p);