Linux and POST

Brian Jones (balif@nacs.net)
Sat, 7 Feb 1998 12:21:49 -0500 (EST)


At work the other day I was working on a machine that had
suspected bad memory or board, and I decided to throw in a drive with
linux and compile a kernel to see if I could get a more informative
message than Win95 locking up and diagnostic programs passing.

I had left a POST board in to use some of the onboard diagnostics,
and when linux was booting I glanced over at it and saw the display going
nuts. When the machine was idle it held at 51, and when I flipped between
virt terms it jumped to 3F and back to 51. Initalizing swap caused it to
flash between 88 and 5 other codes so fast the LCD couldn't keep up.
Compiling the kernel caused the same reaction only a bit slower.

Does linux use 80h, as a status display or some form of
communication channel?

-- -- -- -- -- -- -- -- -- --
Balif@Nacs.Net Lame Magazine Http://lame.kava.org Linux Enthusiast
Computer Technician Networking Programmer Digital Applications
"After being a technitian for 2 years, I've discovered if people took care
of their health with the same reckless abandon as their computers, half
would be at the kitchen table on the phone with the hospital, trying to
remove their appendix with a butter knife." www.nacs.net/~balif for pgp

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