public void Write(int addr, int val)
{
switch (addr & 0xFC00)
{
case 0x1800:
Via0.Write(addr, val);
break;
case 0x1C00:
Via1.Write(addr, val);
break;
default:
if ((addr & 0x8000) == 0 && (addr & 0x1F00) < 0x800)
{
_ram[addr & 0x7FF] = val & 0xFF;
}
break;
}
}