[comp.os.minix] AT minix disk info from the archives

Leisner.Henr@xerox.com (Marty) (08/16/89)

I dug this up which explains some more about the AT disk problems.

marty

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Date: 15 Sep 87 17:37:34 EDT (Tuesday)
Subject: 1.2 AT drivers still seems at little ill
To: info-minix@udel.edu
cc: leisner
From: Marty <Leisner.Henr>


I now have a 1.1 system up and running on Aztec C and want to get my hard
disk going so I can have a useful system.

After the bootblok transfer control to fsck, the controller status port
(1f7H) is 0 -- the disk controller is totally idle.

After booting the system, execute win_init() which executes com_out(),
which calls drive_busy() which fails automatically if RDY (ready) or SC
(seek complete) is 0.


I'm currently playing around with the driver (I have the specs for the
WD1002-WAH in front of me and it seems to agree with the bios).  I played
blindly with the winchester driver to get my home system running of the
hard disk, now I want a driver which runs reliably on both 6 and 8 Mhz ATs.
The way the driver boots up (if you can send a command to the controller,
set number hard disks to 0) is not very robust.

I went though this in May, and I'm going through this again.  Does anyone
have a really good AT driver they'd like to send me (uucp please).  Any
pointers to good discussions about how these WD1002-WAH boards work would
be nice.

Has anyone been able to use the at_wini driver with newers ATs?  It seems
like its really close except for some sticky (:->) bits.

marty
GV:  leisner.henr
NS:  martin leisner:henr801c:xerox
UUCP: martyl@rocksvax.uucp

 

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