From owner-freebsd-current Thu May 2 21:39:09 1996 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id VAA23688 for current-outgoing; Thu, 2 May 1996 21:39:09 -0700 (PDT) Received: from localhost.cdrom.com (localhost.cdrom.com [127.0.0.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id VAA23683 Thu, 2 May 1996 21:39:07 -0700 (PDT) Message-Id: <199605030439.VAA23683@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: Host localhost.cdrom.com [127.0.0.1] didn't use HELO protocol To: Bob Willcox cc: freebsd-current@freefall.freebsd.org (freebsd-current) Subject: Re: ahc driver no longer sees one of my disks In-reply-to: Your message of "Thu, 02 May 1996 21:36:28 CDT." <199605030236.VAA13228@luke.pmr.com> Date: Thu, 02 May 1996 21:39:07 -0700 From: "Justin T. Gibbs" Sender: owner-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk >Since replacing my 100MHz Pentium CPU with a 166MHz CPU, the Adaptec >2940 device driver no longer sees one of my SCSI disks, my Toshiba >3701 CDROM, or my Wangtek 5525ES tape drive (the adapter's BIOS >does). What I use to get (before the CPU change) for boot output >was: > ... >Any suggestions, help, ideas?? The driver uses DELAY() to perform the SCSI bus reset. Perhaps its not long enough in your new system. My other guess is that the bus settle delay isn't long enough. What's the value of SCSIDELAY in your kernel? Is DELAY() really so dependant on the CPU speed? Can we get a better DELAY() macro? > >Thanks, >-- >Bob Willcox >bob@luke.pmr.com >Austin, TX -- Justin T. Gibbs =========================================== FreeBSD: Turning PCs into workstations ===========================================