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From: lofaso@titan.tsd.arlut.utexas.edu (Bernie Lofaso)
Newsgroups: comp.sys.amiga.tech,comp.sys.amiga
Subject: Pal, Jr. HD controller info needed
Message-ID: <292@titan.tsd.arlut.utexas.edu>
Date: 22 Jun 89 14:57:34 GMT
Reply-To: lofaso@titan.UUCP (Bernie Lofaso)
Distribution: usa
Organization: Applied Research Labs, University of Texas
Lines: 19

I have a PAL, Jr. expansion chassis for my A1000. This unit has what is
essentially a 2090 hard disk controller on a Zorro I form factor.  I'm using
it with an ST506 interface (a Seagate ST225 disk). Although I have been
happy with the unit, after running DiskPerf I found that I was actually
getting pretty slow transfer rates - about 50k/sec.  My disk is formatted
with the FFS and is running 1.3.  I have read postings of much higer transfer
rates using the 2090/2090A and am wondering why my set-up is so slow. I
realize most of these postings were using SCSI disks rather than ST506, but
I don't think the difference is that great.  A reply from the manufacturer
(who quit making the unit long ago) says that the ROM checksums were the
same as the 2090A.  I would be interested in hearing from any other PAL or
PAL, Jr. owners who have run DiskPerf with ST506 disks.  I'd be thrilled just
to get 200k/sec or so transfer rates.

Also... has anyone tried getting this controller to do SCSI??

Bernie Lofaso

lofaso@titan.tsd.arlut.utexas.edu