*BSD News Article 50806


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From: larry@rn.com (Larry Snyder)
Newsgroups: comp.periphs.scsi,comp.unix.bsd.freebsd.misc
Subject: 2940/Opti/Quantum Grand Prix 7200RPM
Date: 8 Sep 1995 11:48:13 -0400
Organization: Larry's ISDN News Server at Home
Lines: 18
Message-ID: <42pojt$1ho@trauma.rn.com>
NNTP-Posting-Host: rn.com
Xref: euryale.cc.adfa.oz.au comp.periphs.scsi:37187 comp.unix.bsd.freebsd.misc:5823

My Quantum drive won't run reliable at 10mhz with sync transfers
enabled

here is the boot info:
Sep  8 10:40:50 trauma /kernel: ahc0 <Adaptec 294X SCSI host adapter> rev 0 int a irq 11 on pci0:18
Sep  8 10:40:50 trauma /kernel: ahc0: reading board settings
Sep  8 10:40:50 trauma /kernel: ahc0: 294x Single Channel, SCSI Id=7, aic7870, 16 SCBs
Sep  8 10:40:50 trauma /kernel: ahc0: Downloading Sequencer Program...Done
Sep  8 10:40:50 trauma /kernel: ahc0: Probing channel A
Sep  8 10:40:50 trauma /kernel: (ahc0:0:0): "QUANTUM XP32150 581H" type 0 fixed SCSI 2
Sep  8 10:40:50 trauma /kernel: sd0(ahc0:0:0): Direct-Access 2050MB (4199760 512 byte sectors)
Sep  8 10:40:50 trauma /kernel: pci0:19: vendor=0x1095, device=0x640, class=storage [not supported]
Sep  8 10:40:50 trauma /kernel: pci0: uses 8392704 bytes of memory from f8000000 upto f87fffff.


the machine is a 100 mhz Opti Pentium with a 2940.  From time to time with
the 10mhz rate enabled with sync operation - the SCSI buss will lock up solid.