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handle masked io properly

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This commit is contained in:
Alex Janka 2023-02-12 14:20:07 +11:00
parent a3dfec659a
commit aeba27f6cf
1 changed files with 19 additions and 8 deletions
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27
src/processor/memory.rs
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@ -224,13 +224,15 @@ impl Memory {
}
}
0xFF04 => self.io[addr_l] = 0,
0xFF07 => {
self.masked_io(addr_l, data, 0b111);
}
0xFF0F => {
self.masked_io(addr_l, data, 0b11111);
}
0xFF11 | 0xFF14 | 0xFF16 | 0xFF19 | 0xFF1E | 0xFF23 | 0xFF26 => {
0xFF07 => self.masked_io(addr_l, data, 0b111),
0xFF0F => self.masked_io(addr_l, data, 0b11111),
0xFF10 => self.masked_io(addr_l, data, 0b01111111),
0xFF1A => self.masked_io(addr_l, data, 0b10000000),
0xFF1C => self.masked_io(addr_l, data, 0b1100000),
0xFF20 => self.masked_io(addr_l, data, 0b111111),
0xFF23 => self.io[addr_l] = (self.io[addr_l] & 0b10111111) | (data & 0b01000000),
0xFF26 => self.io[addr_l] = (self.io[addr_l] & 0b1111111) | (data & 0b10000000),
0xFF11 | 0xFF14 | 0xFF16 | 0xFF19 | 0xFF1E => {
// sound
self.io[addr_l] = data;
}
@ -242,7 +244,16 @@ impl Memory {
// cgb only
self.io[addr_l] = data;
}
0xFF44 | 0xFF76 | 0xFF77 => {
0xFF03
| 0xFF08..0xFF0F
| 0xFF15
| 0xFF1F
| 0xFF27
| 0xFF28
| 0xFF29
| 0xFF44
| 0xFF76
| 0xFF77 => {
// read-only addresses
println!("BANNED write: {data:#X} to {address:#X}");
}