*BSD News Article 10495


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Received: by minnie.vk1xwt.ampr.org with NNTP
	id AA206 ; Fri, 29 Jan 93 13:00:35 EST
Newsgroups: comp.unix.bsd
Path: sserve!manuel.anu.edu.au!munnari.oz.au!sgiblab!spool.mu.edu!agate!tfs.com!julian
From: julian@tfs.com (Julian Elischer)
Subject: new scsi tape driver for the brave hearted
Message-ID: <1993Jan28.071957.4362@tfs.com>
Organization: Trw Financial Systems
Date: Thu, 28 Jan 1993 07:19:57 GMT
Lines: 58

This is anouncing an 'alpha test' of some changes to the scsi system
I'm looking for guinea pigs.

I have rewritten parts of the scsi tape driver
it's available in
ref.tfs.com:/usr/src/sys.extras/julian-scsi/scsi

you'll probably need new copies of the other files in that directory too.

I'd like some brave souls to try it out on fixed record length
tape drives as I only have the variable type.

main changes are:

better handling of end of file (filemark handling on read)
better handling of variable record size.
some minor numbers should push some drives into differnt densities
hopefilly better handling of some 'silly' drives
  (but this isn't completed yet).. eventually
  this will be run-time configurable with an ioctl interface.


Also for the brave..
sd.c has been changed so that if your drive doesn't support
the geometry inquiry, it uses a ficticious one.
Also has a better default disklabel for unlabeled drives.

I only suggest this for people already running my scsi system.
The rest of the system should remain compatible

hey maybe you want to try the new scsiconf.c too
(takes a config variable SCSI_DELAY in seconds form the config
file if you need to wait for a slow device to wake up on boot)
(also probes faster)

remember
this is only for experienced scsi hackers or people 
desperate to get a new device working..

Also see the new ultrastore 14f driver support
First release anywhere!
Be the second person in the world to run a 14f under 386bsd!
(real adventurers only) (i386/isa/ultra14f.c)

(if you're an experienced kernel hacker with scsi experience
who wants a chalenge.. I have a tmc1670 driver 99.5% working..
apply within..)


julian
+----------------------------------+       ______ _  __
|   __--_|\  Julian Elischer       |       \     U \/ / On assignment
|  /       \ julian@tfs.com        +------>x   USA    \ in a very strange
| (   OZ    ) 2118 Milvia st. Berkeley CA. \___   ___ | country !
+- X_.---._/  USA+(510) 704-3137(wk)           \_/   \\
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