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feat: implement ch1

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TODO: It's really loud
This commit is contained in:
Rekai Nyangadzayi Musuka
2022-04-20 20:52:50 -03:00
parent 97a689ab55
commit 0184ec3e5e
2 changed files with 143 additions and 53 deletions
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15
src/bus/io.zig
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@@ -118,7 +118,7 @@ pub fn read(bus: *const Bus, comptime T: type, address: u32) T {
0x0400_0073 => bus.apu.ch3.vol.raw,
0x0400_0079 => bus.apu.ch4.envelope.raw,
0x0400_007C => bus.apu.ch4.poly.raw,
0x0400_0081 => @truncate(T, bus.apu.ch_vol_cnt.raw >> 8),
0x0400_0081 => @truncate(T, bus.apu.psg_cnt.raw >> 8),
0x0400_0089 => @truncate(T, bus.apu.bias.raw >> 8),
// Serial Communication 1
@@ -151,7 +151,7 @@ pub fn write(bus: *Bus, comptime T: type, address: u32, value: T) void {
// Sound
0x0400_0080 => {
bus.apu.ch_vol_cnt.raw = @truncate(u16, value);
bus.apu.psg_cnt.raw = @truncate(u16, value);
bus.apu.dma_cnt.raw = @truncate(u16, value >> 16);
},
0x0400_00A0 => bus.apu.chA.push(value),
@@ -232,7 +232,10 @@ pub fn write(bus: *Bus, comptime T: type, address: u32, value: T) void {
0x0400_004E, 0x0400_0056 => {}, // Not used
// Sound
0x0400_0080 => bus.apu.ch_vol_cnt.raw = value,
0x0400_0060 => bus.apu.ch1.sweep.raw = @truncate(u8, value),
0x0400_0062 => bus.apu.ch1.setSoundCntH(value),
0x0400_0064 => bus.apu.ch1.setFreq(&bus.apu.fs, value),
0x0400_0080 => bus.apu.psg_cnt.raw = value,
0x0400_0082 => bus.apu.setDmaCnt(value),
0x0400_0084 => bus.apu.setSoundCntX(value >> 7 & 1 == 1),
0x0400_0088 => bus.apu.bias.raw = value,
@@ -314,7 +317,7 @@ pub fn write(bus: *Bus, comptime T: type, address: u32, value: T) void {
0x0400_0062 => bus.apu.ch1.duty.raw = value,
0x0400_0063 => bus.apu.ch1.envelope.raw = value,
0x0400_0064 => bus.apu.ch1.setFreqLow(value),
0x0400_0065 => bus.apu.ch1.setFreqHigh(value),
0x0400_0065 => bus.apu.ch1.setFreqHigh(&bus.apu.fs, value),
0x0400_0068 => bus.apu.ch2.duty.raw = value,
0x0400_0069 => bus.apu.ch2.envelope.raw = value,
0x0400_006C => bus.apu.ch2.setFreqLow(value),
@@ -578,8 +581,8 @@ pub const NoiseControl = extern union {
/// Read / Write
pub const ChannelVolumeControl = extern union {
left_vol: Bitfield(u16, 0, 3),
right_vol: Bitfield(u16, 4, 3),
right_vol: Bitfield(u16, 0, 3),
left_vol: Bitfield(u16, 4, 3),
ch1_right: Bit(u16, 8),
ch2_right: Bit(u16, 9),