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feat(ppu): stub sprite attribute table

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This commit is contained in:
Rekai Nyangadzayi Musuka
2021-04-08 20:28:16 -05:00
parent 23de87e482
commit 770b081f98
2 changed files with 144 additions and 14 deletions
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15
src/bus.rs
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@@ -126,7 +126,7 @@ impl Bus {
}
0xFE00..=0xFE9F => {
// Sprite Attribute Table
unimplemented!("Unable to read {:#06X} in the Sprite Attribute Table", addr);
self.ppu.oam.read_byte(addr)
}
0xFEA0..=0xFEFF => {
eprintln!("Read from {:#06X}, which is prohibited", addr);
@@ -161,10 +161,8 @@ impl Bus {
0xFF49 => self.ppu.monochrome.obj_palette_1.into(),
0xFF4A => self.ppu.pos.window_y,
0xFF4B => self.ppu.pos.window_x,
0xFF4D => {
// Reading from this address is useful on the CGB only
0x00
}
0xFF4D => 0x00, // Reading from this address is useful on the CGB only
0xFF7F => 0x00, // Don't think this address is used for anything
_ => unimplemented!("Unable to read {:#06X} in I/O Registers", addr),
}
}
@@ -232,7 +230,7 @@ impl Bus {
}
0xFE00..=0xFE9F => {
// Sprite Attribute Table
unimplemented!("Unable to write to {:#06X} in Sprite Attribute Table", addr);
self.ppu.oam.write_byte(addr, byte);
}
0xFEA0..=0xFEFF => {
eprintln!("Wrote {:#04X} to {:#06X}, which is prohibited", byte, addr);
@@ -276,15 +274,14 @@ impl Bus {
0xFF49 => self.ppu.monochrome.obj_palette_1 = byte.into(),
0xFF4A => self.ppu.pos.window_y = byte,
0xFF4B => self.ppu.pos.window_x = byte,
0xFF4D => {
// Writing to this address is useful on the CGB only
}
0xFF4D => {} // Writing to this address is useful on the CGB only
0xFF50 => {
// Disable Boot ROM
if byte != 0 {
self.boot = None;
}
}
0xFF7F => {} // Don't think this address is used for anything
_ => unimplemented!("Unable to write to {:#06X} in I/O Registers", addr),
};
}