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- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!mcsun!Germany.EU.net!mpifr-bonn.mpg.de!specklec.mpifr-bonn.mpg.de!mlelstv
- From: mlelstv@specklec.mpifr-bonn.mpg.de (Michael van Elst)
- Subject: Re: SCSI-Streamer on A3000
- Message-ID: <1992Sep8.110652.5567@mpifr-bonn.mpg.de>
- Sender: news@mpifr-bonn.mpg.de
- Nntp-Posting-Host: specklec
- Organization: Max-Planck-Institut f"ur Radioastronomie
- References: <Rudolf_Neuhaus.02zk@ouzonix.bo.open.de> <1992Aug28.144937.6102@javelin.sim.es.com> <64893@cup.portal.com> <1992Sep3.055304.6640@tc.cornell.edu> <manfred.01jd@edomdo.UUCP>
- Date: Tue, 8 Sep 1992 11:06:52 GMT
- Lines: 25
-
- In <manfred.01jd@edomdo.UUCP> manfred@edomdo.UUCP (Manfred Dolag) writes:
- >Either the WD33C93A is under certain conditions unable to identify the
- >Message In phase correctly or the streamer bios is "messing up" the SCSI
- >timing.
-
- I'd rather think that the streamer messes up the timing as there are no
- problems with other devices. I use an 33C93A myself (although I use the
- AMD part, not the one from WD).
-
- >It does *not* occur if we use the same CDB with a length >6 filled up with
- >zero! With a CDB length > 7 the device driver always gets a SCSI state of
- >0x4F "unexpected phase Message In" instead of the "correct" state 0x1F
- >after CDB transmission. The device driver can handle this difference and
- >proceedes correctly.
-
- Never happened to me. I use the 33C93A in advanced mode, I always write
- the length to the ownid register and fill up the number of CDB bytes
- used.
-
- Regards,
- --
- Michael van Elst
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