> 
> I'm not sure what the problem with this approach is.  We did try this at
> one time and ran into some problem...
> 
> -allen

Uhmm, I can think of one.. :)  In the process of using asm to talk to
video ram, I sorta tromped all over the memory after the video ram.
(couldn't happen right? :) )  Anyway, I repeatedly got the video card
in such a state that the only image on the monitor was a bright
horizontal smear (.5 inch high, centered).  Kinda like the TV tube
when you cut power, just continous.  Of course this led to a lot of
_rapid_ powering off..  Randomly frobbing bits definitely doesn't work,
but on 1MB boundaries or similar might not run into the problems of
runaway 'jmp loop' commands.. :-)

-Andrew
-- 
============================ Real 32bit multi-tasking UN*X System
Andrew Gillham             | TCP/IP,NFS,PPP,4.4BSD-lite,multi-user
gillham@andrews.edu        | i386,sparc,alpha,mac68k,amiga,others
LAN/WAN/NW/UN*X specialist |   ---> http://www.NetBSD.org <---