[comp.os.minix] HELP -- Minix on 8MHZ PC-AT harddisk

Leisner.Henr@xerox.com (Marty) (08/07/89)

What's the status of the Minix hard-disk driver on the 8 Megahertz genuine
PC=AT.

When I got my V1.1 system (way back) I rewrote the winchester driver.  I
renamed the registers to something more meaningful (WIN_REGn is not
meaningful to me), did subtle things like changing MAX_WIN_RETRY from 10000
to 10 (I don't thing 10000 is reasonable) and found parts of the winchester
code which did not seem to agree with the specs for the PC-AT disk
controller.  I also took out the partition sorting [I've never been able to
comprehend how DOS fdisk and Minix number partititions]. The result has
worked fine on 6 and 8 Mhz PCs, Wyse PCs and Compaq PCs (including 386).  I
had to do the initial work on floppy disks to get Minix going (good
lord!!).


I just cleaned off the hard disk of an 8 Mhz PC-AT to start doing minix
development (actually I want to get Minix going on my sun386i).  I have
v1.3b which does work fine on 6Mhz AT.  Have any changes been made since
then to support 8 Mhz AT.  

I'm somewhat disheartened the changes have not made their way back into the
distribution.  I'm perfectly willing to analyze what I'm doing against what
the distribution is doing.  If anyone wants to look at the AT driver and
help resolve this problem, I'll send it out via mail.

Can someone please send me:
	1) a current copy of the AT winchester driver (I'm not sure these days
what current means) -- the newest one I have is 1.3b.
	2) a uuencoded kernel with the BIOS based driver (I kinda can't do
anything reasonable until I install Minix on my hard disk and the
distribution I have won't run off the hard disk).
	

marty
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