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- Path: sparky!uunet!math.fu-berlin.de!unidui!flyer!easix!smurf.sub.org!danube!edith.deg.sub.org!sticht
- From: sticht@edith.deg.sub.org (Stefan Sticht)
- Newsgroups: comp.sys.amiga.hardware,comp.unix.amiga
- Subject: A3000 w/ Quantum P425S under Amix: SCSI bus hangs randomly. Help!
- Distribution: world
- Message-ID: <sticht.0d0j@edith.deg.sub.org>
- Date: 17 Nov 92 19:33:39 MET
- Organization: private
- Lines: 41
-
- I've got the following *big* problem:
-
- I want to run AmigaUnix V2.03 from a Quantum ProDrive 425iS in an A3000
- (16MHz, 4+2 MB memory).
-
- But the SCSI bus hangs randomly. The A3000's and the drive's LED are
- burning forever.
-
- It's not likely a problem of the harddisk, because the drive works fine in
- another A3000 (25Mhz, 2+16MB) and it seems to work fine under AmigaOS (2.04
- and 3.0), but I tested this only extensively. A Quantum LP52S also works
- fine under AmigaOS.
-
- Then I tried another harddisk for Unix, an external Syquest. Same problem:
- the SCSI bus hangs randomly. The Syquest works fine (under Unix) on the
- other A3000 (the 25MHz one).
-
- It's not a matter of termination. I'm sure I always terminated everything
- right. There are no terminators on the motherboard (that's the right way).
-
- I already tested:
-
- o Q425S as the only drive, attached with the short ribbon cable,
- terminators on the drive installed, tested different unit numbers
- o replaced all cables
- o replaced the WD33C93A-PL SCSI chip (it's a 00-04 PROTO).
-
- I don't think there's a general problem with AmigaUnix 2.03 on 4 MB
- systems, as I already had such a system running here for a short test on an
- A2000/A2630 w/ 4MB.
-
- I didn't change jumpers on the drive (exept for the unit number), as I have
- no manual for the drive and the drive works fine in the other A3000.
-
- So. What can I test now? It seems to be a problem on the A3000's
- motherboard. Anyone out there with an idea what to check? Anyone who
- already had a similar problem?
-
- Thank you very much for any help!
-
- Gruss, Stefan
-