Central Point Option Board (earlier non-ASIC version) chips

From: Frank McConnell <fmc_at_reanimators.org>
Date: Sat Dec 1 18:01:17 2001

ard_at_p850ug1.demon.co.uk (Tony Duell) wrote:
> U23 is still a TTL type (a 3-state buffer, not a counter, now), so data
> on it is trivial to find.

Yes, it was the difference in number that suggested a difference in
function and that is why I thought I should bring attention to it.
Not being a hardware guy, I don't have that (number, function) map
cached in my brain.

> I don't recognise U3, though. I guess it was made by UMC. How many pins
> does it have?

Eight. mark_k (who started this thread) told me it is a data separator.

-Frank McConnell
Received on Sat Dec 01 2001 - 18:01:17 GMT