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Date: Sun, 29 Oct 1995 20:25:55 -0500 (EST)
From: "Jonathan M. Bresler" <jmb@kryten.Atinc.COM>
Subject: Re: WANGDAT strangeness
To: Frank Durda IV <uhclem%nemesis@fw.ast.com>
cc: current@freebsd.org
In-Reply-To: <m0t9hkn-000ItnC@nemesis.lonestar.org>
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On Sun, 29 Oct 1995, Frank Durda IV wrote:

> [0]a WangDAT tape drive that under 2.0.5 won't let you remove the media until
> [0]you reboot the system, OR you can issue a mt offline, remove the media, and
> [0]then reboot to get the drive to load new media - that really stinks and
> 
> [1]	this problem must be unique to WangDAT or at least non-exabyte 
> [1]4mm tape drives.   i use a 4mm for daily backup.  unload the tape with 
> [1]"/usr/bin/mt -f /dev/rst0 rewoffl".   load a new tape every morning and 
> [1]haev no problems at all.  

> The DAT drive has a READY and an ACCESS light.  Under SCO, the READY light
> would blink yellow while loading/unloading, then remain green until the
> media is unmounted.   The ACCESS light only blinked during
> commands/transfers, etc.  So when the drive is idle (tape loaded or unloaded),
> the ACCESS light is dark.
> 
> On 2.0.5-R, the ACCESS light is off until you touch the drive, then it
> goes on solid and remains on regardless of activity.   Once the drive is
> touched, the front-panel eject button no longer works.  (From external
> appearances, it acts like it is always in the middle of processing a
> command from the host.)
[snip]
> I have been using the DAT drive for about four years under SCO UNIX with
> their standard driver, so I know that the drive works well.

	the wangdat drive may have broken firmware...my toshiba cdrom 
does.  i had to patch the kernel to overcome it...the drive claimed to be 
a hard disk!  how about sending in the dmesg output, boot with -v, please.

> > Frank Durda IV <uhclem@nemesis.lonestar.org>|"The Knights who say "LETNi"
> or uhclem%nemesis@fw.ast.com (Fastest Route)| demand...  A SEGMENT REGISTER!!!"
> ...letni!rwsys!nemesis!uhclem               |"A what?"
> ...decvax!fw.ast.com!nemesis!uhclem         |"LETNi! LETNi! LETNi!"  - 1983

	okay--so what is letni?  i didnt find it as a vax opcode..though 
bbcci and bbssi look kinda net.


> 
> 

Jonathan M. Bresler  jmb@kryten.atinc.com       | Analysis & Technology, Inc.  
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