public byte OutSec(byte abyte)
{
if (listening)
{
if (listener_active)
{
sec_addr = (byte)(abyte & 0x0f);
received_cmd = (IECCommandCode)(abyte & 0xf0);
return sec_listen();
}
}
else
{
if (talker_active)
{
sec_addr = (byte)(abyte & 0x0f);
received_cmd = (IECCommandCode)(abyte & 0xf0);
return sec_talk();
}
}
return (byte)C64StatusCode.ST_TIMEOUT;
}
public byte OutATN(byte abyte)
{
received_cmd = 0;
sec_addr = 0; // Command is sent with secondary address
switch ((IECATNCode)(abyte & 0xf0))
{
case IECATNCode.ATN_LISTEN:
listening = true;
return listen(abyte & 0x0f);
case IECATNCode.ATN_UNLISTEN:
listening = false;
return unlisten();
case IECATNCode.ATN_TALK:
listening = false;
return talk(abyte & 0x0f);
case IECATNCode.ATN_UNTALK:
listening = false;
return untalk();
}
return (byte)C64StatusCode.ST_TIMEOUT;
}
