willi_at_allvantage.com
Date: 2007-01-23 21:26:00
Hi!
Quoting Ethan:
<--- snip --->
> To replace a single 6550 with a single 2114, you'd need to determine
> what chip selects are high-true, what ones are low-true, and with a
> series of gates (inverters, ORs, NANDs...), combine the chip selects
> to a single chip select for the 2114.
<--- snip --->
I'n fairly certain I have a adaptor in my small keyboard PET that allowed me
to subtitute 2114 chips for 6550s.
Willi
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