A3000 Memory Question…
10-May-94 20:36:34
Sb: #144720-A3000 Memory Question…
Fm: PAUL DICKINSON 73021,32
To: Keith Meyers 72070,541
Keith–
Those DIPs (I assume you mean U850D-U857D) are in parallel(?) with bank 0
of the ZIP sockets (U850-U857). Or, to quote the A3000 manual,"RAM chips
can be installed in either the DIP section or the first bank in the ZIP
section, but not both."
This can be useful if your ZIPs are 256×4 Static column ZIPs and you have
2 megs of chip RAM, but you'd really rather have an extra meg of FAST RAM,
you can move your second meg of chip RAM (U267-U274) over to these
sockets. This won't work though, if you have 1×4 ZIPS. Check jumper #J852
(about the center of the motherboard, 2/3 of the way back) – it'll be on
1&2 for 1×4 and on 2&3 for 256x4s.
I know this is a little detailed, but I just replaced/reorganized my RAM
today, so I feel a little like an expert.
Good Luck!
–Pd