From owner-freebsd-questions Tue Jun 15 15:56: 8 1999 Delivered-To: freebsd-questions@freebsd.org Received: from bw85zhb.bluewin.ch (bw85zhb.bluewin.ch [195.186.1.75]) by hub.freebsd.org (Postfix) with ESMTP id 1F68A14C8D for ; Tue, 15 Jun 1999 15:56:04 -0700 (PDT) (envelope-from finesse@bluewin.de) Received: from finesse ([195.226.102.174]) by bw85zhb.bluewin.ch ( with ESMTP id AAA5AB8 for ; Wed, 16 Jun 1999 00:55:57 +0200 Received: from pascal by finesse with local (Exim 2.05 #2) id 10u265-00007q-00 for freebsd-questions@freebsd.org; Wed, 16 Jun 1999 00:54:25 +0200 Date: Wed, 16 Jun 1999 00:54:25 +0200 From: Pascal Gienger To: freebsd-questions@freebsd.org Subject: Problems with AHA 1542CF and cdrecord Message-ID: <19990616005425.A479@finesse.paul-magazin.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95i Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG The other day, I tried to use my old 486/66 with its AHA 1542CF to do something useful, e.g. burning CD rom disks. I have a Teac R55S, well supportes by cdrecord. Access like a cdrom works like charm, but when burning a cd (-dummy and no -dummy, same effect) it stops at approximately 80 Megabytes and the SCSI bus freezes. After 40 Seconds (the well known scsi timeout) things are getting normal again, with a broken cdrecord, of course. :) It is reproductible. Sometimes it happened after 50 seconds, but normally it is after 80 or 81 Megabytes of written data. Speed does not matter. Changing cdr-disks does not help either. Tried different cables, using parity or no, still no effect. All SCSI devices use 5,0 Megabyte/sec transfers in sync mode. My system is a FreeBSD 3.1-RELEASE with 16 Megabytes of RAM (so the bounce buffers problem does not arise). At the moment of burning, nothing special runs on the machine. Any hints (besides "buy a new computer")? For double-speed burning (300 kbyte/sec to the writer, 300 kbyte/sec from the disk) the little machine should be enough, it is not Windows... Pascal -- Unix, Pascal Gienger, Moosstr. 7 /\ 7 .rtssooM ,regneiG lacsaP xinU Networx 78467 Konstanz / \ znatsnoK 76487 xrowteN & WWW finesse@bluewin.de / \ ed.niweulb@essenif WWW & T: +49 7531 52709, F: 52739 / \ 93725 :F ,90725 1357 94+ :T To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message