[96] in linux-scsi channel archive
Re: Any information on 3M SCSI Tape drive *urgent*
daemon@ATHENA.MIT.EDU (Drew Eckhardt)
Wed Mar 8 21:32:06 1995
To: scott@statsci.com
cc: rr002c@uhura.cc.rochester.edu, linux-scsi@vger.rutgers.edu
In-reply-to: Your message of "Wed, 08 Mar 1995 10:05:35 PST."
<m0rmQ76-000r3sC@main.statsci.com>
Date: Wed, 08 Mar 1995 15:26:02 MST
From: Drew Eckhardt <drew@boulder.openware.com>
In message <m0rmQ76-000r3sC@main.statsci.com>, scott@statsci.com writes:
>Rajib Rashid <outcast@enigma.cif.rochester.edu> wrote:
>
>> I have traced the code, and I have found that the 'type' code for
>> the device is returned '16' (non-existant) when it should be actually 2
>> (sequential device). And since the maximum number defined at the kernel
>> source is 10, the device is not registered.
>
>Actually, I think the 3M MCD-40 is a "direct access tape drive" - you can
>have it seek to specific blocks on the tape & write things there without
>having end-of-data marks & such. I've used one on my Amiga & the tape
>driver software (btntape-3.0, if you know Amiga software) has some special
>code to handle these drives.
I don't know if the drive is direct access or not, but it is _not_ a
standard sequential access device; and forcing detection as such will not
get it working.
It might prove worthwhile to play with the SCSI generic driver and
see what commands it responds to, and incorporate those into a "propper"
driver if that interests you.
