Here, in all its glory....
From: Marvin Johnston [mailto:marvin@...
Sent: Sunday, March 20, 2005 12:26 AM
Subject: Low-Level PC Formatting Using Debug Commands
I just ran across this and thought it might be of interest for anyone
doing a low level format on a PC (not AT) type controllers. It was taken
from a February 13, 1989 issue of Tech Times that appears to be a
ComputerLand Confidential publication (this is a copy.) My usual
procedure was to unassemble C800:5 or C800:6 and G=????:? the address
that was a jmp instruction. I've never used the :800 or tried to format
a Xebec controller.
Company Debug Command
Western Digital -G=C800:5 or
Xebec Series of commands
-0320 07 (use 17 if embedded servo dr)
At this point, the LED on the drive should come on to indicate that the
drive is formatting. When the light goes off, coninue:
The last entry should get 00 status back, indicating a successful
Sent: Tuesday, July 05, 2005 3:35 PM
Subject: [midatlanticretro] Stock IBM XT low level format program wanted
[this is a copy of an email I also sent to classic cmp] I have an IBM XT
with all original parts. This is the middle era
version with a Xebec/IBM harddrive controller (no dip switches),
newer diskette drive, and an IBM 20 MB hard drive. The computer
boots with no errors. It looks like the computer was never used,
it's pristine. Might anyone have a link to a program that I can
use to run a low level format specific to this controller card and
hard drive? I have had trouble locating the low level format program
via DEBUG. I have found a number of Debug commands on the Internet
for other drives and controllers, but none for this. I have searched
the segement offsets between C000:0000 and EC00:0000 in 0400 increments.
..Maybe I am blind! Is there an IBM official low level format diskette
image out there? That would be preferred.
-- E N D --
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