> Okay, so is it really time to upgrade my from my C64?  
> Just kidding.  

Actually, if you had a C64 your timing problems would be solved. I wrote a
CW send/receive program for Atari back in the 80's and it worked great.
(6502 processor, same as your Commodore 64.)

The problem (if it exists -- there are probably ways around this) is the
preemptive multi-tasking OS. It has so many other things to do that the gap
between a dit and a dah looks like a good time for it to go off and do
something else for a while. It may or may not get back to your dah in a
timely fashion. On the Atari and the C64, once your code was running, it was
the only thing running so you could be sure you weren't going to lose the
machine's attention.

Craig
NZ0R
K1 #1966

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