[GreenKeys] We have to get this guy on ITTY
Jeffrey D Angus
jangus at socal.rr.com
Sat Dec 20 11:57:24 EST 2008
Kind of dated now, but back in the mid '80s I wrote a program in BASIC
for the Commodore C-64 to handle the conversion so I could use a HAL
ST-6000 with the computer.
In essence, I set up the UART as 5 bits, 1 start, 1.5 stop and 45 baud.
The trick was in doing the conversions. Even with only 5 bits of data,
the parallel side of the UART is 8 bits, so I did a conversion table of
ASCII to "what it needed to be" for the past 5 bits to show BAUDOT
code. And of course vice versa.
There were other little sub routines written in to handle the LTRS and
FIGS shift and to not try and send any disallowed characters.
Jeff-1.0
wa6fwi
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