Ron Kneusel wrote:
Michael- I'm running under ProDOS 8 on an Apple IIgs. I'm not really sure how to proceed beyond that point. It would be nice to get simple serial I/O set up, for future uses.
Ah, yes--now I remember you were using a IIgs... Well, that leaves out the simple 6551 code, since you have the harder Zilog SCC to deal with. Still, it isn't too hard to disable its interrupts and just poll the receive buffer... Jorge just gave an example of how to do this, and Forth makes it easy to do *anything*. ;-)
Michael J. Mahon wrote:Ron, since you're in Forth, why not just write words to read a character directly from the 6551? It's only a few instructions, and all your problems will be gone. If you know what you want to do, don't let the firmware touch anything after you've used it to initialize the port--if that. -michael
Parallel computing for 8-bit Apple II's! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it is seriously underused."