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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Yes indeed, the ultimate aim is to get a version of VMS running
on a MicroVAX II which is currently fitted with a DEQNA. The MicroVAX II has an
RD53 in it but I am not sure it works. I have no other machine to put the RD53
into and no other disks I can put into the MicroVAX II (as far as I know).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I was told that the 3900 would not run versions earlier than 5.1,
but I have just tried it with 4.6, it boots OK and I should be able to get it
to 4.7, so perhaps that will do. I don’t have media for 5.0 through to
5.3. I have media for 5.4 and, after a few initial difficulties with the media,
I am now in the process of installing it, but it is also my understanding that
5.4 has limited support for DEQNA. We shall see.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Rob<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> simh-bounces@trailing-edge.com
[mailto:simh-bounces@trailing-edge.com] <b>On Behalf Of </b>Stephen Hoffman<br>
<b>Sent:</b> 08 April 2009 18:42<br>
<b>To:</b> simh@trailing-edge.com<br>
<b>Subject:</b> Re: [Simh] VAX 780 as a boot server<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Robert Jarratt writes:<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>I want to try using the SIMH VAX 780 as a boot server. I
can't use the 3900<br>
simulation as that needs a version of VMS that is too new (I need a version<br>
prior to 5.4, and only have up to 4.7).<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>I'm not working with Mr Jarratt here, but based on the
postings and discussions I've noticed scattered around so far, this is an
attempt to transfer MicroVMS V4.1M over onto a MicroVAX II KA630 box, and boot
it. MicroVMS V4.1M being the first release with support for the MicroVAX
II box and the KA630 processor.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Satellite or diskless or InfoServer boot probably won't help
here as AFAIK none of this stuff was particularly ironed out and available
until rather after V4.1M. Clustering didn't get going until the later
releases in V4 range and into the V5 range.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>The usual load device for the MicroVAX II was floppy disk or
TK50 or RRD50-series CD-ROM. Forty or fifty some RX50 floppies, IIRC,
for the full kit.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>The usual hard disk was the RD52 via RQDX2, or (somewhat
more rarely) RC25 via KLESI.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>With a spare RD disk or swapped RD disk, the system could be
gotten to boot a (far) more recent version of OpenVMS VAX via InfoServer
(present in V8.2-1 and later) or via some other swappable media (TK or TF or
disk), and that newer release could be used to restore V4.1M onto an RD52 or
RC25. Or move the RQDX2 or KLESI forward to a newer Q-bus box, and load
the RD52 or RC25 with V4.1M there.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>As for the "too new" question, creating a MicroVAX
3500 KA650 should be a straightforward tweak in simh from the current MicroVAX
3900 (KA655), and the former boots on V4.7A and later. But I don't know
that this approach or the use of InfoServer or such is going to be effective
here. But I'd definitely try InfoServer here before I tried the other
sequences here. The next approach would be a completely satellite
diskless boot of some V5-vintage OpenVMS VAX (that's new enough to work and be
available, and old enough to accept the DEQNA; that's V<a name="VMS_Support"><span
class=apple-style-span><span style='font-family:"Times","serif"'><o:p></o:p></span></span></a></p>
<p><span class=apple-style-span><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>5.4-3 or earlier</span></span><span class=apple-style-span><span
style='font-family:"Times","serif";color:black'><o:p></o:p></span></span></p>
<p><span class=apple-style-span><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>) or temporarily swap the DEQNA for a DELQA or such, and then
mount the disk remotely and BACKUP /IMAGE V4.1M down to the RD52 disk (and then
swap back the DEQNA).</span></span><o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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