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Banking mode

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This commit is contained in:
Franco Colmenarez 2021-11-13 08:04:34 -05:00
parent d90a25e6f6
commit 0a30d9d194
1 changed files with 5 additions and 3 deletions
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8
src/rom.rs
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@ -194,9 +194,7 @@ impl ROM {
return self.data[address as usize];
} else if BANK_SWITCHABLE.in_range(address) {
return self.data[((self.rom_bank as usize * 0x4000) + (address as usize & 0x3FFF)) as usize];
// return self.data[(address + (BANK_SWITCHABLE.begin() * (self.rom_bank - 1))) as usize];
} else if EXTERNAL_RAM.in_range(address) {
println!("RAM read");
if !self.info.has_ram {
return 0xFF;
}
@ -232,7 +230,11 @@ impl ROM {
// println!("RAM bank {:02X}", data);
self.ram_bank = data & 0b11;
} else if address >= 0x6000 && address <= 0x7FFF { // Banking mode select
// println!("Change banking mode");
self.banking_mode = match data & 1 {
0 => BankingMode::Simple,
1 => BankingMode::Advanced,
_ => unreachable!(),
}
} else if EXTERNAL_RAM.in_range(address) {
if !self.ram_enable || !self.info.has_ram {
return;