Path: utzoo!attcan!uunet!seismo!sundc!pitstop!sun!decwrl!labrea!rutgers!att!whuts!homxb!houxs!daw
From: daw@houxs.UUCP (David Wolverton)
Newsgroups: comp.sys.mac
Subject: Big screen on expanded 512E possible?
Message-ID: <999@houxs.UUCP>
Date: 27 Sep 88 21:51:49 GMT
Organization: AT&T Bell Labs, Holmdel, NJ
Lines: 29

Not long ago, Chuq asked if a large screen (one with more pixels)
could be put on a 512E if there was already a Dove 2Meg+SCSI
board in it.

My gut feeling is that there probably is no such beast, because the
memory expansion boards want to clip onto the 68000 chip, and the
monitor boards also want to clip directly onto the 68000 chip.  So you
have to choose one or the other.

Not having seen any responses yet to his posting, I'd like to generalize
on it a little.  Are any large screens compatible with ANY 2Meg+SCSI
expansions in a 512E????

Some 512E-compatible "accelerator" cards support extra memory,
SCSI, and an add-on monitor (TSI's new one fits this description).
However, you have to pay extra 'cause accelerator boards cost more than
simple memory+SCSI boards.

[Extra credit question for Mac hardware hackers]  Would it be reasonably
straightforward to build a simple (minimal/no active logic) interface
card/cable that would clip onto the 68000 and would provide a place
for a monitor card to attach AND a place for a memory+SCSI card to
attach?  Assuming the mechanical details could be worked out, are there
other potential problems?  For instance, would something like the
Radius FPD put its screen RAM in the same address space as that used
by a RAM expansion?

Dave Wolverton
att!houxs!daw