public boolean isValid(int address) {
return channel1.isValid(address)
|| channel2.isValid(address)
|| channel3.isValid(address)
|| channel4.isValid(address)
|| (address >= 0xFF30 && address <= 0xFF3F);
}
public void write(int address, byte value) {
if (channel1.isValid(address)) channel1.write(address, value);
else if (channel2.isValid(address)) channel2.write(address, value);
else if (channel3.isValid(address)) channel3.write(address, value);
else if (channel4.isValid(address)) channel4.write(address, value);
else if (address >= 0xFF30 && address <= 0xFF3F) {
wavePatternRAM.put(address - 0xFF30, value);
}
}
public byte read(int address) {
if (channel1.isValid(address)) return channel1.read(address);
else if (channel2.isValid(address)) return channel2.read(address);
else if (channel3.isValid(address)) return channel3.read(address);
else if (channel4.isValid(address)) return channel4.read(address);
else if (address >= 0xFF30 && address <= 0xFF3F) {
return wavePatternRAM.get(address - 0xFF30);
}
return 0;
}