Can anyone point me to a simple code example for talking to the SIO port? I did this about 30 years ago and darn if I can remember how. I know I had to set the audio frequency register for the clock or baud rate. but still trying to digest the OS manual on how I did that. for the desired frequency. also I know that I set SKCTL for async but in this instanse I want to use sync.
Can anyone help?
Basically I am trying to determine if my SIO is working on the 800.
This thread looked promising but I am not seeing the Atari end of the code.
Edited by spinnaker15136, Mon Apr 22, 2019 6:48 PM.