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From: hojo@cbnewsb.cb.att.com (HC Johnson)
Newsgroups: comp.sys.atari.st,comp.os.minix
Subject: Re: How do I set up MINIX on my Supra drive?
Summary: Supra has 3 eras.
Keywords: SUPRA MINIX ATARI ST
Message-ID: <1991Mar12.161252.22227@cbfsb.att.com>
Date: 12 Mar 91 16:12:52 GMT
References: <22392@pasteur.Berkeley.EDU>
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In article <22392@pasteur.Berkeley.EDU>, anton@sting.Berkeley.EDU (Jeff Anton) writes:
> I have a new 40Mbyte Supra hard disk drive for my Atari ST 1040.
> The machine is a few years old with TOS in ROM.
> MINIX ST 1.1 doesn't recognize the drive.  I've tried several
> approaches includeing running MINIX from GEMDOS with MINIX.PRG
> and MINIX.IMG generated from the boot disk.
> 
> I would guess I need a different hard disk device driver
> but I've no idea how I will do that.
> 
> Please mail me if you've got this combination to work
> or if you are reasonable sure how to do it.
> 				Jeff Anton
> 				anton@scam.Berkeley.EDU


When Minix 1.1 came out there were threads like:
1. Very old Supra's wouldn't work.  Likely never did.  They screwed up 
	interupts.
	Typical of supras with out fans.
2. A middle vintage would work with software timing fixes.  Supra supplied
	a posted driver to fix.  I may have this in an archive.
	Typical of supras with fan without chaining (I think!).
3. "Newer" ones worked.

Remember, MINIX, like UNIX is interrupt driven, and if the supra controller
generates extra or suppresses interrupts, MINIX dies.

Also, I did an upgrade, which is in all the archives to allow you to access
partitions 4-12 on the supra.

Disclaimer.   I don't have a Supra.  And I am glad!

Howard Johnson
ATT BELL LABS
att!lzsc!hcj
hcj@lzsc.att.com