Mail Archives: opendos/2003/09/11/05:38:35
On 2003-09-10, Gary Welles wrote:
> My SyQuest SyJet cartridge drive has worked for years under BIOS
> control, but hangs when I attempt to operate it with the ASPI
> manager (ASPI8DOS.sys) and either the SyQuest (SQDRIVER.sys) or
> Adaptec (ASPIDISK.sys) device drivers.
>
> Does anyone know anything specific about DR-DOS 7.03 and SqQuest
> SCSI driver, particularly about the RCS.ZIP patch (see below) in
> the SyQuest readme file.
No, I haven't heard of any problems using SyQuest drives under
DR-DOS 7.xx yet. Anyone else? Unfortunately, I also don't have
any original SyQuest drives for testing - still looking to obtain
some of them to complete my test lab's hardware collection.
Further, I am afraid I am not aware of this RCS.ZIP patch you
mentioned, but if someone has it, I would certainly like to
have a copy for my own archives.
Still, I assume, the problems mentioned in the cited document
would only apply to DR DOS 6.0 and earlier. Mind, that these
old issues of DR DOS were still built around a heavily modified
kind of "CP/M-86" kernel coated with a DOS emulation layer, and
many undocumented internal data structures of MS-DOS, like, for
example, the CDS array, were only faked (mostly read-only)
in order to make some dirty applications work.
This has changed alot with the introduction of BDOS 7.0 and higher,
that is NetWare PalmDOS 1.0, DR DOS "Panther" and "StarTrek",
DR DOS 6.0 business update 1993, Novell DOS 7, Caldera OpenDOS 7.01,
as well as DR-DOS 7.02 and higher. These "new" generations of
DR-DOS all use natively MS-DOS compatible internal data structures
and have a genuine CDS array, so drivers and applications patching
around in these internal data structures should in almost all
cases work exactly the same under DR-DOS as they do under MS-DOS
or PC DOS. Of course, there are still differences at detail level.
I haven't had any problems using various other (non-Syquest)
removable cartridge disks under DR-DOS, so, in order to track
down the problem, have you cross-checked this under MS-DOS
or PC DOS? Have you tried the lastest version of your Adaptec
SCSI drivers? Please also try to load the drivers without
memory managers loaded, just to load them under a completely
different memory layout.
Hope it helps,
Matthias
--
<mailto:Matthias DOT Paul AT post DOT rwth-aachen DOT de>; <mailto:mpaul AT drdos DOT org>
http://www.uni-bonn.de/~uzs180/mpdokeng.html; http://mpaul.drdos.org
"Programs are poems for computers."
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