public void Write(ushort addr, ushort bus)
{
if (addr >= 0x9000)
{
// 0x9000 <= addr < 0xffff in PROM
throw new InvalidOperationException("Cannot write to PROM");
}
else if (addr >= 0x8000)
{
// 0x8000 <= addr <= 0x8fff in IO Range
IOWrite?.Invoke(addr, bus);
}
else
{
// addr < 0x8000 in SRAM
_sram.Span[addr] = bus;
}
}
public void RemovePortWriter(ushort in_address, IOWrite in_writer)
{
int address = in_address & 0xff;
m_io_write[address] -= in_writer;
}
public void AddPortWriter(ushort in_address, IOWrite in_writer)
{
int address = in_address & 0xff;
m_io_write[address] += in_writer;
}
