Subject: Re: xdm scrambled ed drivers brains.
To: Allen Briggs <briggs@PUMA.BEVD.BLACKSBURG.VA.US>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: netbsd-help
Date: 02/17/1996 09:56:11
On Sat, 17 Feb 1996 09:32:19 -0500 (EST) 
 Allen Briggs <briggs@puma.bevd.blacksburg.va.us> wrote:

 > > short, xdm was causing 'shared memory corrupt' errors in my correctly 
 > > configured ed0 driver by reading from the card's shared memory 
 > > through /dev/mem.
 > 
 > Why was xdm reading /dev/mem in the first place?

This was a problem on the hp300 port once, too.  I worked around it in 
the dca driver (I think...)

Basically, I think xdm reads /dev/mem when it generates the magic 
cookie...I could be mistaken, but I think that's when it does it.

--------------------------------------------------------------------------
Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
NAS: M/S 258-6                                          Work: 415.604.0935
Moffett Field, CA 94035                                Pager: 415.428.6939