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chore: give DISPCNT DISPSTAT and VCOUNT to PPU struct

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This commit is contained in:
Rekai Nyangadzayi Musuka
2022-02-13 04:27:20 -04:00
parent 31fa06ac4a
commit e5a76a3c02
3 changed files with 73 additions and 76 deletions
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12
src/scheduler.zig
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@@ -38,28 +38,28 @@ pub const Scheduler = struct {
},
.HBlank => {
// The End of a Hblank (During Draw or Vblank)
const old_scanline = bus.io.vcount.scanline.read();
const old_scanline = bus.ppu.vcount.scanline.read();
const scanline = (old_scanline + 1) % 228;
bus.io.vcount.scanline.write(scanline);
bus.io.dispstat.hblank.unset();
bus.ppu.vcount.scanline.write(scanline);
bus.ppu.dispstat.hblank.unset();
if (scanline < 160) {
// Transitioning to another Draw
self.push(.Draw, self.tick + (240 * 4));
} else {
// Transitioning to a Vblank
if (scanline < 227) bus.io.dispstat.vblank.set() else bus.io.dispstat.vblank.unset();
if (scanline < 227) bus.ppu.dispstat.vblank.set() else bus.ppu.dispstat.vblank.unset();
self.push(.VBlank, self.tick + (240 * 4));
}
},
.Draw => {
// The end of a Draw
bus.ppu.drawScanline(&bus.io);
bus.ppu.drawScanline();
// Transitioning to a Hblank
bus.io.dispstat.hblank.set();
bus.ppu.dispstat.hblank.set();
self.push(.HBlank, self.tick + (68 * 4));
},
.VBlank => {