[comp.sys.att] PC7300 mother board memory upgrade

hoffman@pitt.UUCP (Bob Hoffman) (07/08/87)

Does anyone know what address decoder chip(s), PALs, ROMs, and/or
jumpers need to be changed on a PC7300 mother board when upgrading
from 64K chips to 256K chips?  I see only one jumper near the front
of the machine, but I could be missing something.

-- 
Bob Hoffman, N3CVL       {allegra, bellcore, cadre, idis, psuvax1}!pitt!hoffman
Pitt Computer Science    hoffman%pitt@relay.cs.net

dave@arnold.UUCP (Dave Arnold) (07/09/87)

In article <5772@pitt.UUCP>, hoffman@pitt.UUCP (Bob Hoffman) writes:
> Does anyone know what address decoder chip(s), PALs, ROMs, and/or
> jumpers need to be changed on a PC7300 mother board when upgrading
> from 64K chips to 256K chips?  I see only one jumper near the front
> of the machine, but I could be missing something.

I once talked to a hotliner about this.  Apparently, at one point in time
AT&T trained some dealers and VAR's on how to do the memory upgrade.  There
was even some documentation.  Amperfax knows how to do it.  Maybe some kind
person can share this info.

Dave Arnold

UUCP:	...!seismo!uunet!arnold!dave