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From: jesup@cbmvax.commodore.com (Randell Jesup)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A3000 and 2090
Message-ID: <13194@cbmvax.commodore.com>
Date: 13 Jul 90 00:35:09 GMT
References: <2886@isc-br.ISC-BR.COM>
Reply-To: jesup@cbmvax (Randell Jesup)
Organization: Commodore, West Chester, PA
Lines: 28

In article <2886@isc-br.ISC-BR.COM> ricks@odin..isc-br.com (Rick Schaeffer 99) writes:
>I recently purchased a new Amiga 3000 to upgrade my A2500.  I have a
>Syquest cartridge winchester which I connect through an old Commodore
>2090 controller (NOT the 2090A).  I run it this way because the 2090
>doesn't automount it's drives and I only use the Syquest for backup.  I
>expected to be able to place the 2090 into the 3000 and continue to use
>the Syquest/2090 combination as before...but apparently the 2090 won't
>work in the 3000!

	Most current HD controllers don't work (at least DMA controllers)
because of addressability problems.  I suspect the 2090 has the same problem
the 2091 has - the buffers used to do the initial reads to find the first
partition, etc are to fast mem, which on an A3000 it can't reach with DMA.

>I've never been able to get the syquest to work properly
>on the 2091 I have in the 2500...and it doesn't work connected to
>the external SCSI port on the 3000 either so I'm stuck if I can't get
>the 2090 to work!!

	It should work attached to an A2091 (on A2000/a2500) or attached to
an A3000 directly.  I know a number of people who have them and have them
working.  What (exactly) are the symptoms and configuration of the machines?
Also what rev ROMS/boards of the Amiga, Syquest, and A2091?

-- 
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!"