9fans archive / 1998 / 08 / 9 /    prev next

From: Erik Theisen etheisen@min...
Subject: [9fans] PC's 16MB SEGMAPSIZE limitations.
Date: Tue, 04 Aug 1998 18:15:44 -0400

forsyth@cal... wrote:

> >>I tried bumping SEGMAPSIZE to 64 and the machine became unstable.
>
> that's enough for me on dozens of machines, with no instability.

Sorry,  spoke too soon.  The instability wasn't caused by SEGMAPSIZE.  I
guess I applied the updates too hastily. :)

Apparently there is some incompatibility between my #9 Motion 771 VLB
card and the 9/pc/vgargb524.c hardware cursor stuff. After commenting
out the hwgc entry in vgadb the problem went away.

Symptoms included black screens of death when resizing windows and/or
moving the mouse, sending the monitor into a out-of-sync tailspin,
hanging the machine, and  frying the local kfs file system.

The hung machine and tossed file system seem to be a fairly strange
effects for hwgc incompatibilities.  I wonder if there isn't a bad
pointer in the code somewhere.

Any thoughts on this?  Thanks.

Ciao,
Erik