Adaptec HD controller access?

From: Marvin <marvin_at_rain.org>
Date: Thu Nov 5 20:03:12 1998

Jason Willgruber wrote:
> I'm trying to find out how to get into the controller's BIOS so that I can
> set up the HD (using DEBUG). There's two jumper blocks, and one single
> jumper. I'm going to post a picture at:

I tried to access the site, but it was too slow, and I was too impatient
:). Accessing the BIOS through debug is easy once you know the proper
address. The syntax from debug is "g=c800:5" with the "c800:5" being the
address in the BIOS to start the formatting routine. Other addresses
include c800:6, cc00:5, and cc00:6. On the Western Digital Super Bios, you
can set the drive parameters from the prompts and I don't know if the
Adaptec will allow this or not. If you have jumper blocks, the drive
parameters are most likely set with jumpers.

I have found the easiest way to verify the address is to use the unassemble
command as there will always be a jmp instruction at the entry point in the
bios, i.e. uc800:5 and if there is no jmp instruction on the first line, try
another address. Good luck.
Received on Thu Nov 05 1998 - 20:03:12 GMT