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Date:      	08 Jan 1996 10:53:14 +0100
From:      kowa@sunbayer45.informatik.tu-muenchen.de (Wolfgang Kowarschick)
To:        freebsd-scsi@freefall.FreeBSD.org
Subject:   scsi problems
Message-ID:  <c5ezqbzqagl.fsf@sunbayer45.informatik.tu-muenchen.de>

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Hi,

I've some problems with my scsi bus. At unpredictable times,
but usually if there is havy scsi transfer (e.g., dump
disc to dat), I get input/output-errors on the scsi bus.
In this case, all I can do is to press the reset button.

I'm running FreeBSD 2.1.0 on an Asus P55TP4XE Board with
an Asus PCI-SC200 controller (NCR 53c810). I've three internal
devices (Quantum Atlas 2GB, NEC CD-Rom 512, SQ 555 (44MB))
and one external device (HP Dat Streamer).
The termination of the scsi-bus seems to be correct
(I'm not quite sure with the disk as I've no description
of the jumper settings, but I think it's ok).

kernel output (copied by hand, so there may be some typos):

/kernel: st0(ncr0:3:0): NOT READY asc:4,1
  logical unit is in process of becomming ready
  phase change 2-7 10@004fc558 resid=9
ncr0:0: ERROR(81:0) (f-aa-0) (8/13) @ (eq8:48000000)
  script cond = c0000008
  reg: da 10 00 13 47 08 00 1f 78 0f 80 aa 80 00 02 00
ncr0: target 0 doesn't release the bus
ncr: handshake timeout
sd0(ncr0:0:0): COMMAND failed (6ff) @f09fdcc



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