Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!uunet!isis!ico!dougp
From: dougp@ico.isc.com (Doug Pintar)
Newsgroups: comp.unix.i386
Subject: Re: Tuning aha1540 driver (ISC 2.2)
Message-ID: <1990Aug28.174628.28821@ico.isc.com>
Date: 28 Aug 90 17:46:28 GMT
References: <LARRY.90Aug15125107@focsys.uucp> <1990Aug25.120304.21688@scuzzy.mbx.sub.org>
Reply-To: dougp@ico.ISC.COM (Doug Pintar)
Organization: Interactive Systems Corp., Boulder CO
Lines: 14

In article <1990Aug25.120304.21688@scuzzy.mbx.sub.org> src@scuzzy.mbx.sub.org (Heiko Blume) writes:
>larry@focsys.uucp (Larry Williamson) writes:
>>I've installed the Sync option jumper on the controller. 
>
>that jumper doesn't matter - it's setting is overridden by ISC's scsi
>driver.
>
For ISC Unix 2.2, THIS IS NOT TRUE!  The 2.0.2 version DID always force the
adapter into NON-SYNCHRONOUS mode, which probably wasn't right... :-)
To take advantage of synchronous transfers on drives that support them, THIS
JUMPER MUST BE INSTALLED!  There is NO way the software can work around this!

caveat scsor,
DLP