public void Write(ushort address, byte value)
{
if (address >= 0x0000 && address <= 0x1FFF)
{
ramEnable = (value & 0x0F) == 0x0A;
}
else if (address >= 0x2000 && address <= 0x3FFF)
{
romBank = (byte)((romBank & 0x80) | (value & 0x7F));
romBank &= (byte)((romData.Length >> 14) - 1);
if (romBank == 0x00)
{
romBank = 0x01;
}
}
else if (address >= 0x4000 && address <= 0x5FFF)
{
if (value >= 0x00 && value <= 0x07)
{
rtc.IsSelected = false;
ramBank = (byte)(value & 0x07);
}
else if (value >= 0x08 && value <= 0x0C)
{
rtc.IsSelected = true;
rtc.SelectedRegister = (byte)(value - 0x08);
}
}
else if (address >= 0x6000 && address <= 0x7FFF)
{
if (value == 0x00 && rtc.IsLatched)
{
rtc.IsLatched = false;
}
else if (value == 0x01 && !rtc.IsLatched)
{
rtc.Update();
for (var i = 0; i < RTC.NumRegisters; i++)
{
rtc.LatchedRegisters[i] = rtc.BaseRegisters[i];
}
rtc.IsLatched = true;
}
}
else if (address >= 0xA000 && address <= 0xBFFF)
{
if (rtc.IsSelected)
{
rtc.Update();
rtc.BaseRegisters[rtc.SelectedRegister] = value;
}
else if (ramEnable)
{
ramData[(ramBank << 13) | (address & 0x1FFF)] = value;
}
}
}
