On Mar 22, 23:56, Tony Duell wrote:
> You _honestly_ think that a 22V10 (or whatever) is simpler, cheaper, and
> easier to use than a couple of 74LS20s? You know, a 22V10 has 24 pins,
> and the 2 74LS20s have 28. That's only 4 more pins to solder. And there's
> no requirement to program a chip if you use the '20s.
No, but I can make more choices with the 22V10 -- I want to be able to
switch ROM sets (between the original on the motherboard and possibly two
on the expansion) and RAM sizes and that would need a little more effort
with the TTL, because I want to *replace* the 74154, not add to it.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Received on Wed Mar 22 2000 - 19:04:48 GMT