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feat: implement ARM read open bus

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This commit is contained in:
Rekai Nyangadzayi Musuka
2022-04-13 23:21:25 -03:00
parent 6d5c30ac25
commit 9b9b6c0d6f
8 changed files with 115 additions and 73 deletions
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18
src/scheduler.zig
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@@ -29,7 +29,7 @@ pub const Scheduler = struct {
return self.tick;
}
pub fn handleEvent(self: *Self, cpu: *Arm7tdmi, bus: *Bus) void {
pub fn handleEvent(self: *Self, cpu: *Arm7tdmi) void {
if (self.queue.removeOrNull()) |event| {
const late = self.tick - event.tick;
@@ -40,19 +40,19 @@ pub const Scheduler = struct {
},
.Draw => {
// The end of a VDraw
bus.ppu.drawScanline();
bus.ppu.handleHDrawEnd(cpu, late);
cpu.bus.ppu.drawScanline();
cpu.bus.ppu.handleHDrawEnd(cpu, late);
},
.TimerOverflow => |id| {
switch (id) {
0 => bus.tim._0.handleOverflow(cpu, late),
1 => bus.tim._1.handleOverflow(cpu, late),
2 => bus.tim._2.handleOverflow(cpu, late),
3 => bus.tim._3.handleOverflow(cpu, late),
0 => cpu.bus.tim._0.handleOverflow(cpu, late),
1 => cpu.bus.tim._1.handleOverflow(cpu, late),
2 => cpu.bus.tim._2.handleOverflow(cpu, late),
3 => cpu.bus.tim._3.handleOverflow(cpu, late),
}
},
.HBlank => bus.ppu.handleHBlankEnd(cpu, late), // The end of a HBlank
.VBlank => bus.ppu.handleHDrawEnd(cpu, late), // The end of a VBlank
.HBlank => cpu.bus.ppu.handleHBlankEnd(cpu, late), // The end of a HBlank
.VBlank => cpu.bus.ppu.handleHDrawEnd(cpu, late), // The end of a VBlank
}
}
}