Path: utzoo!mnetor!uunet!husc6!mailrus!nrl-cmf!ames!pacbell!hoptoad!unisoft!gethen!bdt!david
From: david@bdt.UUCP (David Beckemeyer)
Newsgroups: comp.sys.atari.st
Subject: Re: DMA/Hard Disk Reset
Message-ID: <318@bdt.UUCP>
Date: 9 May 88 23:59:00 GMT
References: <1813@brahma.cs.hw.ac.uk>
Reply-To: david@bdt.UUCP (David Beckemeyer)
Organization: Beckemeyer Development Tools, Oakland, CA
Lines: 19
Keywords: Used or not

In article <1813@brahma.cs.hw.ac.uk> neil@cs.hw.ac.uk (Neil Forsyth) writes:
>
>I heard a rumour (nothing more, nothing less) that the Atari Hard disk drives
>don't use the reset pin from the DMA port. Is this true? Anyone care to
>comment.

It's my understanding that the RESET makes it to the Host Adapter board,
but doesn't go any farther than that (i.e. it's not passed on to the
SCSI controller).

I believe that this is not unique to the Atari HD.  I think it also
applies to the Supra host adapter too.   I don't know about ICD.  I think
BMS is the only one that passes the RESET to the SCSI controller.  It
appears though that Supra does some special things on RESET.
-- 
David Beckemeyer			| "To understand ranch lingo all yuh
Beckemeyer Development Tools		| have to do is to know in advance what
478 Santa Clara Ave, Oakland, CA 94610	| the other feller means an' then pay
UUCP: ...!ihnp4!hoptoad!bdt!david 	| no attention to what he says"