private void updateTimer()
{
if (GameBoyCPU.getBit(6, RTCRegisters[4]) == 0)
{
DateTime curr = System.DateTime.Now;
TimeSpan currSpan = curr - start;
RTCRegisters[0] = (byte)(currSpan.Seconds);
RTCRegisters[1] = (byte)(currSpan.Minutes);
RTCRegisters[2] = (byte)(currSpan.Hours);
RTCRegisters[3] = (byte)(currSpan.Days);
if (currSpan.Days > 255)
{
//Rollover
RTCRegisters[4] = GameBoyCPU.setBit(0, RTCRegisters[4]);
}
if (currSpan.Days > 511)
{
//Set overflow bit.
RTCRegisters[4] = GameBoyCPU.setBit(7, RTCRegisters[4]);
//Unset rollover
RTCRegisters[4] = GameBoyCPU.resetBit(0, RTCRegisters[4]);
start = start.AddDays(512);
}
}
}
public bool ResetJoyPadBit(byte key)
{
bool isHighToLow = (GameBoyCPU.getBit(5, memory[0xFF00]) == 1) ? true : false;
joypadState = GameBoyCPU.resetBit(key, GameBoyMemory.joypadState);
return(isHighToLow);
}
private void resetSpeedBit()
{
memory[KEY1] = GameBoyCPU.resetBit(7, memory[KEY1]);
}
public void unSetPrepared()
{
memory[KEY1] = GameBoyCPU.resetBit(0, memory[KEY1]);
}