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chore: move cpu implementation to it's own module

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There's a decent amount of Hacks and TODO:s that need revisiting
I should spend a bit of time cleaning up code 😔
This commit is contained in:
Rekai Nyangadzayi Musuka
2023-06-25 18:56:37 -05:00
parent 5b6650ef34
commit 954fb279ad
33 changed files with 208 additions and 2129 deletions
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9
src/core/apu.zig
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@@ -3,7 +3,8 @@ const SDL = @import("sdl2");
const io = @import("bus/io.zig");
const util = @import("../util.zig");
const Arm7tdmi = @import("cpu.zig").Arm7tdmi;
const Arm7tdmi = @import("arm32").Arm7tdmi;
const Bus = @import("Bus.zig");
const Scheduler = @import("scheduler.zig").Scheduler;
const ToneSweep = @import("apu/ToneSweep.zig");
const Tone = @import("apu/Tone.zig");
@@ -520,18 +521,20 @@ pub const Apu = struct {
pub fn onDmaAudioSampleRequest(self: *Self, cpu: *Arm7tdmi, tim_id: u3) void {
if (!self.cnt.apu_enable.read()) return;
const bus_ptr = @ptrCast(*Bus, @alignCast(@alignOf(Bus), cpu.bus.ptr));
if (@boolToInt(self.dma_cnt.chA_timer.read()) == tim_id) {
if (!self.chA.enabled) return;
self.chA.updateSample();
if (self.chA.len() <= 15) cpu.bus.dma[1].requestAudio(0x0400_00A0);
if (self.chA.len() <= 15) bus_ptr.dma[1].requestAudio(0x0400_00A0);
}
if (@boolToInt(self.dma_cnt.chB_timer.read()) == tim_id) {
if (!self.chB.enabled) return;
self.chB.updateSample();
if (self.chB.len() <= 15) cpu.bus.dma[2].requestAudio(0x0400_00A4);
if (self.chB.len() <= 15) bus_ptr.dma[2].requestAudio(0x0400_00A4);
}
}
};