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From: kodiak@amiga.UUCP (Robert R. Burns)
Newsgroups: comp.sys.amiga.tech
Subject: Re: help with disk/tape device driver(s)
Keywords: device drivers, SCSI
Message-ID: <4172@amiga.UUCP>
Date: 17 Jul 89 19:59:15 GMT
References: <1006@olympic.oz> <5107@tekigm2.MEN.TEK.COM> <1048@olympic.oz> <461@medusa.informatik.uni-erlangen.de>
Reply-To: kodiak@tooter.UUCP (Robert R. Burns)
Organization: Commodore-Amiga Inc, Los Gatos CA
Lines: 17

In articles ... Michael van Elst and Enno Davids write about SCSI disk and
tape support at the exec device level.  A (standard or fast) DOS file
system is associated with a SCSI disk thru an exec device (e.g. hddisk.device)
that looks like the trackdisk.device.  There is no corresponding DOS handler
for tape drives at present.  A backup program that I know of that uses SCSI
tapes (BRU) does so via SCSI commands issued directly thru the tape drive
thru the same exec device using the HD_SCSICMD command described in the
1.3 include file <devices/scsidisk.h>.  We encourage all applications requiring
access to something other than a magnetic disk on SCSI to use this command,
and all writers of SCSI exec-level drivers to support it.

- Kodiak
-- 
Bob Burns, amiga!kodiak				   _
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