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From: kleef@cs.vu.nl (Patrick van Kleef)
Newsgroups: comp.unix.xenix
Subject: Extra Xenix Memory in Compaq Port. II
Message-ID: <1076@ark.cs.vu.nl>
Date: Sun, 9-Aug-87 20:15:26 EDT
Article-I.D.: ark.1076
Posted: Sun Aug  9 20:15:26 1987
Date-Received: Tue, 11-Aug-87 00:46:41 EDT
Organization: V.U. Informatica, Amsterdam, the Netherlands
Lines: 15

I'm trying to enlarge the cramped 640 Kb brain of my Compaq Portable II
for use by Xenix. However, off-the-shelf memory boards are giving me
problems. A 4meg expansion board (including serial and parallel ports)
from Taiwan (can't even give you the name ;) that works fine
under MS-Dos, gives 'Panic - parity error' under Xenix.

The board is stuffed with 120 ns 256kbit chips, so I figured it would
be fast enough. Still I think the speed is the cause of the trouble.

Has any of the Xenix/Compaq users on this board given their baby more
memory? And if with success: what brand of memory card was used? Am I right
in my assumption that the lack of speed _is_ the source of the problems?
Does 80286 mode Xenix obviously uses require faster memory?

Paul Molenaar