paoda
/
zba
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

chore(io): DISPSTAT bits 3 and 4 better match GBATEK documentation

This commit is contained in:
Rekai Nyangadzayi Musuka 2022-01-10 06:26:42 -04:00
parent 0d8c5e6882
commit 6c0651ca08
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/scheduler.zig
View File

@ -44,7 +44,6 @@ pub const Scheduler = struct {
bus.ppu.drawScanline(&bus.io); bus.ppu.drawScanline(&bus.io);
bus.io.vcount.scanline.write(new_scanline); bus.io.vcount.scanline.write(new_scanline);
bus.io.dispstat.hblank.unset();
if (new_scanline < 160) { if (new_scanline < 160) {
// Transitioning to another Draw // Transitioning to another Draw
@ -69,6 +68,8 @@ pub const Scheduler = struct {
const new_scanline = scanline + 1; const new_scanline = scanline + 1;
bus.io.vcount.scanline.write(new_scanline); bus.io.vcount.scanline.write(new_scanline);
if (new_scanline == 227) bus.io.dispstat.vblank.unset();
if (new_scanline < 228) { if (new_scanline < 228) {
// Transition to another Vblank // Transition to another Vblank
self.push(.VBlank, self.tick + (308 * 4)); self.push(.VBlank, self.tick + (308 * 4));
@ -76,7 +77,7 @@ pub const Scheduler = struct {
// Transition to another Draw // Transition to another Draw
bus.io.vcount.scanline.write(0); // Reset Scanline bus.io.vcount.scanline.write(0); // Reset Scanline
bus.io.dispstat.vblank.unset(); // DISPSTAT was disabled on scanline 227
self.push(.Draw, self.tick + (240 * 4)); self.push(.Draw, self.tick + (240 * 4));
} }
}, },