FM> It's limited by the time to process the interrupt routine on
 FM> each tick. I *think* you should be able to get it down quite
 FM> low on your machine, certainly less than 10, maybe 2-5. Maybe 1
 FM> on mine. I'd be interested to know how low you can go.

  Nothing happens once you get below 200 or so. The pulse just stays
50uS wide.

 FM> Yeah, the // port should be able to get over 100kHz on your
 FM> machine, IMHO.

  ROFL! For 8 bits = 400uS = 2,500Hz. The pulse width is 50us = 19200
baud. It's a low way short of 100KHz and 200,000 Baud.

Regards,
Bob
  
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