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stat -> status; improve MDA register decoding; add MDA CRTC, register and mode enums

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starfrost013
2025-06-11 17:37:15 +01:00
parent dd6f7746a9
commit 317a5b7ade
16 changed files with 220 additions and 147 deletions
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12
src/video/vid_pcjr.c
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@@ -183,8 +183,8 @@ vid_in(uint16_t addr, void *priv)
case 0x3da:
pcjr->array_ff = 0;
pcjr->stat ^= 0x10;
ret = pcjr->stat;
pcjr->status ^= 0x10;
ret = pcjr->status;
break;
default:
@@ -316,7 +316,7 @@ vid_poll(void *priv)
if (!pcjr->linepos) {
timer_advance_u64(&pcjr->timer, pcjr->dispofftime);
pcjr->stat &= ~1;
pcjr->status &= ~1;
pcjr->linepos = 1;
scanline_old = pcjr->scanline;
if ((pcjr->crtc[8] & 3) == 3)
@@ -557,7 +557,7 @@ vid_poll(void *priv)
}
pcjr->scanline = scanline_old;
if (pcjr->vc == pcjr->crtc[7] && !pcjr->scanline) {
pcjr->stat |= 8;
pcjr->status |= 8;
}
pcjr->displine++;
if (pcjr->displine >= 360)
@@ -565,12 +565,12 @@ vid_poll(void *priv)
} else {
timer_advance_u64(&pcjr->timer, pcjr->dispontime);
if (pcjr->dispon)
pcjr->stat |= 1;
pcjr->status |= 1;
pcjr->linepos = 0;
if (pcjr->vsynctime) {
pcjr->vsynctime--;
if (!pcjr->vsynctime) {
pcjr->stat &= ~8;
pcjr->status &= ~8;
}
}
if (pcjr->scanline == (pcjr->crtc[11] & 31) || ((pcjr->crtc[8] & 3) == 3 && pcjr->scanline == ((pcjr->crtc[11] & 31) >> 1))) {