18 Oct
2023
18 Oct
'23
4:21 p.m.
The EMULEX UC07 SCSI Adapter manual (
http://www.bitsavers.org/pdf/emulex/UC0751001-F_UC07_Feb90.pdf) says:
"Ultrix-11 V3.0 and above"
Ulli
Am Mi., 18. Okt. 2023 um 16:32 Uhr schrieb Paul Koning via cctalk <
cctalk(a)classiccmp.org>gt;:
On Oct 18, 2023, at 10:20 AM, Henry Bent via
cctalk <
cctalk(a)classiccmp.org> wrote:
On Wed, 18 Oct 2023 at 10:16, Bill Gunshannon via cctalk <
cctalk(a)classiccmp.org> wrote:
not
On 10/18/2023 10:00 AM, Henry Bent via cctalk wrote:
Interesting. My Dilog DQ614 (ST506 emulating RL02s) specifically does
On Wed, 18 Oct 2023 at 09:56, hupfadekroua via
cctalk <
cctalk(a)classiccmp.org>
wrote:
> Hello all,
>
> does someone have a SCSI disc image of Ultrix 11 for a QBus based
(11/73)
> PDP11.
>
Ultrix-11 doesn't support SCSI disks, as far as I am aware. What
hardware
are you trying to use? In any case, you can
easily use SIMH to install
3.1
(or your preferred version) and then transfer
that to real hardware.
PDP-11 SCSI Modules emulate MSCP and RA disks and work fine with
Ultrix-11.
work with Ultrix, but does work with 2.xBSD and
v7, so I would not
necessarily assume that a third-party board was going to work with
Ultrix-11's drivers.
There are two possible issues. One is that SCSI is a packet oriented
storage command/response system similar to MSCP but different. So the kind
of controllers Bill mentioned are essentiallly translators between the two
protocols.
If what you have is a native SCSI controller -- one that exposes the
actual SCSI commands -- then that requires an entirely different driver
because that isn't MSCP.
If you have an MSCP translator type controller, but the translation is
poorly done, you might end up with it failing for some operating systems.
That's not too unlikely given that the MSCP spec was for a long time a DEC
confidential document, so third parties had to reverse engineer things (and
dodge DEC lawyers).
paul