alex/agb
1
0
Fork 0
mirror of https://github.com/italicsjenga/agb.git synced 2024-12-24 08:41:34 +11:00
Code Issues Packages Projects Releases Wiki Activity

Set sound bias (which seems to make this work on hardware)

Browse source
This commit is contained in:
Gwilym Kuiper 2022-06-11 16:53:39 +01:00
parent 3a419b05de
commit 4633fe7e3c
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
agb/src/sound/mixer/hw.rs
View file

@ -28,6 +28,8 @@ const FIFOB_DEST_ADDR: u32 = 0x0400_00a4;
const SOUND_CONTROL: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0082) };
const SOUND_CONTROL_X: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0084) };
const SOUND_BIAS: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0088) };
const DMA_CONTROL_SETTING_FOR_SOUND: u16 = {
let dest_fixed: u16 = 2 << 5; // dest addr control = fixed
let repeat: u16 = 1 << 9;
@ -89,6 +91,9 @@ pub(super) fn set_sound_control_register_for_mixer() {
// master sound enable
SOUND_CONTROL_X.set(1 << 7);
// Set the sound bias PWM resampling rate to 8bit at 65536Hz (default for most games)
SOUND_BIAS.set(SOUND_BIAS.get() | 1 << 14);
}
pub(super) fn set_timer_counter_for_frequency_and_enable(timer: &mut Timer, frequency: i32) {