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chore(apu): remove implemtation of register that always returns 0xFF

This commit is contained in:
Rekai Nyangadzayi Musuka 2021-08-05 16:39:04 -05:00
parent 6265c8af04
commit 0107fa04c9
1 changed files with 0 additions and 12 deletions
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12
src/apu.rs
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@ -44,10 +44,8 @@ impl BusIo for Apu {
0x17 => self.ch2.envelope(),
0x19 => self.ch2.freq_hi(),
0x1A => self.ch3.enabled(),
0x1B => self.ch3.len(),
0x1C => self.ch3.volume(),
0x1E => self.ch3.freq_hi(),
0x20 => self.ch4.len(),
0x21 => self.ch4.envelope(),
0x22 => self.ch4.poly(),
0x23 => self.ch4.frequency(),
@ -691,11 +689,6 @@ impl Channel3 {
self.enabled = (byte >> 7) & 0x01 == 0x01;
}
/// 0xFF1B | NR31 - Sound Length
pub(crate) fn len(&self) -> u8 {
self.len | 0xFF
}
/// 0xFF1B | NR31 - Sound Length
pub(crate) fn set_len(&mut self, byte: u8) {
self.len = byte;
@ -806,11 +799,6 @@ pub(crate) struct Channel4 {
}
impl Channel4 {
/// 0xFF20 | NR41 - Channel 4 Sound Length
pub(crate) fn len(&self) -> u8 {
self.len | 0xFF
}
/// 0xFF20 | NR41 - Channel 4 Sound Length
pub(crate) fn set_len(&mut self, byte: u8) {
self.len = byte & 0x3F;