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chore(bus): stub some CGB IO registers

This commit is contained in:
Rekai Nyangadzayi Musuka 2021-10-30 14:02:05 +09:00
parent 01278ca83f
commit b9519d9b7a
1 changed files with 3 additions and 0 deletions
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3
src/bus.rs
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@ -262,6 +262,7 @@ impl BusIo for Bus {
0x49 => self.ppu.monochrome.obj_palette_1.into(), 0x49 => self.ppu.monochrome.obj_palette_1.into(),
0x4A => self.ppu.pos.window_y, 0x4A => self.ppu.pos.window_y,
0x4B => self.ppu.pos.window_x, 0x4B => self.ppu.pos.window_x,
0x4F => 0xFF, // CGB VRAM Bank Select
_ => { _ => {
warn!("Attempted read from {:#06X} on IO", addr); warn!("Attempted read from {:#06X} on IO", addr);
0xFF 0xFF
@ -372,12 +373,14 @@ impl BusIo for Bus {
0x4A => self.ppu.pos.window_y = byte, 0x4A => self.ppu.pos.window_y = byte,
0x4B => self.ppu.pos.window_x = byte, 0x4B => self.ppu.pos.window_x = byte,
0x4D => {} // CGB Specific Register 0x4D => {} // CGB Specific Register
0x4F => {} // CGB VRAM Bank Select
0x50 => { 0x50 => {
// Disable Boot ROM // Disable Boot ROM
if byte != 0 { if byte != 0 {
self.boot = None; self.boot = None;
} }
} }
0x70 => {} // CGB WRAM Bank Select
_ => warn!("Attempted write of {:#04X} to {:#06X} on IO", byte, addr), _ => warn!("Attempted write of {:#04X} to {:#06X} on IO", byte, addr),
}; };
} }