If any of the serious Big Iron collectors are interested in a Convex there
is one being decommissioned in Houston. This will be a large hall. If no one
picks this thing up it will sit in the Houston weather for a year or so and
be melted down. This is the second Convex I've run across in the last few
months, surely not many more left.
If your serious about moving a few thousand pounds of supercomputer Email
me for the details.
--
The above item fell into my possession today. It appears to be circa
1990, contains three hard disks (or DASD, if you prefer), a 150mb QIC tape
drive, and a twinax interface card.
The IBM web site indicates this machine supports a whopping 20MB of RAM
and 2GB of hard drive space. It still has an OS on the disks if I can
remember which drive went in which bay in the machine (or if the
id is in the drive rather than the backplane)
The IBM site is not forthcoming on additional details on the machine.
On Feb 6, 18:18, Allison J Parent wrote:
> <In RT-11, full MSCP support post-dates even 5.1. 5.1 works with
RQDX1/2,
>
> define full?
Supports all the QBus controllers. OK, that's not very full :-)
> <but not RQDX3, for example; because whoever wrote the DU: handler
ignored
>
> Dont tell mine RT11 V5.01c system then as the RQDX3 runs just fine. To
> the best of my knowlege RQDXn are interchangeable
Maybe it depends on the firmware then, but I can assure you that the bug
certainly exists, and lots of people other than me found it and suffered
>from it. The particular bug is that the RQDXn (and other MSCP controllers)
return some flags in the top 4 bits of the SA register during
initialisation. On the RQDX1 and RQDX2, the rest of the register contains
zeros, and the driver code depends on that -- IIRC, there are three places
where it does a BNE on the result. The RQDX3 of the same vintage as 5.01,
however, returns the interrupt vector in the bottom bits of SA, so the BNE
doesn't work as desired. Actually, there's slightly more to it than that,
but that's the basics.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Upon the date 12:13 PM 2/6/00 -0800, Zane H. Healy said something like:
>> The list still here? I have a hard time believing zero posts since last
>> night.
And then Christian Fandt graciously replied, astutely noting that:
> Well, everybody was plumb wore out from all the list operation discussions
:-)
Boy, I'll say. I skim through the digest keying on the text 'Subject:'. I
wore
out one mouse trying to get through the likes of:
: Subject: Re: [ClassicCMP] Re: ClassicCMP Re: [ClassicCmp] Tag requested in
Subject: line
: >> I am aware of no mail filters which only allow filtering on Subject:.
> Seems to work very well now!
May even be good enough to discuss the collection, restoration, and sharing
of knowledge about classic computers. I have been on this list since
mid-97, and Zane & Chris probably just as long, if not longer. We all
know that we don't need '[ClassicCMP]' in the subject line since we have
done without for this long. I for one will not debate it beyond this
one posting, because it being or not being there makes no difference to
me.
I might suggest that if there are those wanting to debate it further and
if Jay is willing, then set up another list classicmp-admin and discuss
away.
Meanwhile back at the ranch, I took the trash from my wife's shop out
back to the dumpster. I noticed a mouse (two-button, not four-legged)
in the dumpster. That led to a keyboard and on to a 386 PC. I know,
I know, whoopee! Hey another spare mouse, keyboard, floppy drive never
hurts. And there is a small chance that I will soon be hauling home
a stack of DECstation 5000's and associated goodies.
And one last soapbox point. I do not recall any postings yet, thanking
Jay for all the efforts with regards to the list. Given all the flak,
I would probably have used the ON/OFF switch by now. Why don't we
flood this list one last time with some words of appreciation, and then
you can tell all of us about your latest finds, etc.
Mike Thompson
"Has anyone got a manual for one of these?"
Yes, I have extensive documentation at www.spies.com/arcade/schematics along
with a lot of other information classiccmp folke will find usefu.
Actually, folks, the software is -not- so stupid.
What happened was that I put on my -personal- subject: line the string
[ClassicCmp]. Then Jay added first ClassicCMP then [ClassicCmp]; these are
in fact different. Notice:
Re: [ClassicCMP] Re: ClassicCMP Re: [ClassicCmp] Tag requested in Subject
If people had chosen to be observant, they would have noticed -no- other
subject had multiple tags inserted, even when following-up.
This is the way it should be. The linux-usb, bsd-usb, and irda lists all
use tags, and are very helpful.
Again, I don't see what the issue is for inserting [C] or [CC] at the
beginning.
As for this robbing people of 4 characters on the subject: line - gimme a
break!
(Or should I pop into flippant mode: what, -you- don't use 132-column
screens to read your email! How primitive!) ;-)
-Mike
p.s. For the humor impaired, please note the ;-) on the previous paragraph.
On Sat, 5 Feb 2000, Chuck McManis wrote:
> I think Jay has turned them off, at least a couple of messages further down
> seem to have them off, but the point is not how long they are, it is that
> the software is too stupid to see "Re: [ClassicCMP]" and say "gee this
> thing already has a tag on it, I'll leave it alone." Instead it adds
> another one, so every reply adds 16 characters to the subject line. Tags
> are evil.
>
> --Chuck
>
> At 06:05 PM 2/5/00 -0800, you wrote:
> >I think just [C] or [CC] would be OK, too.
> >-Mike
>Dont tell mine RT11 V5.01c system then as the RQDX3 runs just fine. To
>the best of my knowlege RQDXn are interchangeable (I have done that) with
>one exception... the drive must be formatted for the RQDX3 as it's
>apparently different from the 1/2.
Full RQDX3 support was not in the *base* system until V5.2. Prior to
that, it was a patch release for V5.1, which is why it works in V5.1c
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
>In RT-11, full MSCP support post-dates even 5.1. 5.1 works with RQDX1/2,
>but not RQDX3, for example; because whoever wrote the DU: handler ignored
>the MSCP documentation and made an unwarranted assumption about the
>contents of the SA register during initialisation. It took me ages to
>trace the problem and fix it :-).
MSCP support was added in V5.0 -- but there were some problems, not
the least of which was the fact that it setup the interface such that
if you didn't do any disk access for a minute, the disk would go off
line. This was corrected in a patch for V5.0 and in the distributed
V5.1, at which time it also worked with RQDX2... support for RQDX3
and other similar interfaces wasn't out until V5.2...
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
Re:
> This is the way it should be. The linux-usb, bsd-usb, and irda lists all
> use tags, and are very helpful.
But needless. A decent mail program can filter based on sender,
so the message subject is redundant information. That should be "QED", but...
> As for this robbing people of 4 characters on the subject: line - gimme a
> break!
It matters! Pegasus (3.12), even on a 21" monitor running 1600x1200
seems to refuse to display more than about 35 characters of subject heading
in a folder (no matter how wide I resize that column of the window)
...why? I don't know!
In short, when people complain...sometimes it's because they have
a valid reason to complain. (Sometimes, of course, they don't :)
sieler(a)allegro.com
Stan Sieler sieler(a)allegro.com
www.allegro.com/sieler/wanted/index.htmlwww.allegro.com/sieler