Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!bpa!cbmvax!jesup
From: jesup@cbmvax.commodore.com (Randell Jesup)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Who's got the biggest SCSI drive actually functioning
Keywords: Hard drive SCSI
Message-ID: <13210@cbmvax.commodore.com>
Date: 14 Jul 90 05:29:22 GMT
References: <1990Jul4.035345.18031@zorch.SF-Bay.ORG> <31485@cup.portal.com> <13191@cbmvax.commodore.com> <5085@ethz.UUCP>
Reply-To: jesup@cbmvax (Randell Jesup)
Organization: Commodore, West Chester, PA
Lines: 26

In article <5085@ethz.UUCP> visinfo@bernina.ethz.ch.UUCP (VISINFO c/o Peter Simeon) writes:
>
>The SCSIDirect SHOULD work on all SCSI controllers but it DOES NOT! This is
>the main reason that my SCSI utilities still are beta versions and I could
>not send them to comp.binaries.amiga yet. The most trouble causes the A2090
>which works not always. Mostly it hangs after a few SCSI commands and it
>always reports ILLEGAL OR UNEXPECTED SCSI PHASE errors.

	The A2090(a) predates the SCSIDirect standard.  It happened to have
a predecessor of SCSIDirect, but it doesn't support SCSIF_AUTOSENSE, and
may have some other problems (since there was no standard, nor any real
expectation of external use I think).  To really support SCSIDirect it needs
a complete rewrite.  The A2091, A590, and A3000 all support full SCSIDirect.

>Also the GVP Controllers doesn't make the life of a SCSI tool programmer
>very easy. They use two total incompatible devices with the same version
>number! One supports the SCSIDirect and the other does not.

	Yes, everyone take notice: use version numbers, and bump them.
At commodore we have made simple little programs that bump them for us,
you can do so also, and make it part of your makefiles.

-- 
Randell Jesup, Keeper of AmigaDos, Commodore Engineering.
{uunet|rutgers}!cbmvax!jesup, jesup@cbmvax.cbm.commodore.com  BIX: rjesup  
Common phrase heard at Amiga Devcon '89: "It's in there!"