26 Sep
1997
26 Sep
'97
8:21 a.m.
On Thu, 25 Sep 1997 Tim Shoppa <shoppa(a)alph02.triumf.ca> wrote:
:-). You've been looking at Compupro boards,
haven't you?
Tim, how'dja guess that? ;-)
I've got a small number of spare
25LS2521/74LS688's available if you
need them. (For those not in the know, these are address comparators
used on Compupro's S-100 boards.)
That's okay, I have spares.
It is very worthwhile to have "backup" (i.e.
paper and/or magnetic
media versions) of EPROM's and PAL's.
Uh, oh. Compupro had a love affair with PALs. At least I have a
programmer for the EPROMs. PALs are new to me - is stability an issue
with these devices?
The most commonly blown parts
are line drivers, I find - and these are commodity parts most
of the time (i.e. 1488's/1489's).
And the tantalum capacitors.
Regards,
Jason Brady jrbrady(a)delphi.com Seattle, WA