From: R.J.S. <not@available.right.now>
Newsgroups: alt.sys.pdp10
Subject: Re: Bus-attached displays
Date: Sun, 29 Jul 2001 07:24:04 -0400
Organization: Very Organized
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VB06C

In Marlboro, there were 4.  They were on Dick's system and used for
doing the print sets and such.  (All the "S. Foonley" pages!)
(Dicks's system ran SUDS, the Stanford University Drawing System.)

There really were a GT40, but had minimal code in the -11.  They were
connected thru a DL10 (hence the limit of 4), and the graphics engine
got it's vector list from the -10 via the DL.

On Fri, 27 Jul 2001 23:02:32 -0400, John Sauter <J_Sauter@Empire.Net>
wrote:

>Frank da Cruz wrote (excerpted):
>"Maybe there were some genuine, bus-attached, native 
>graphics devices on PDP-10s, like there were on some 
>of the other PDP-x's and -xx's, with light pens, etc."
>
>The PDP-6/KA10 system at Stanford had a bus-attached
>Type 30 display that we ripped off the PDP-1.  I believe
>it used two 10-bit fields out of the DATAO to plot a
>point.  The Type 30 had a 1024 by 1024 resolution,
>but only plotted white points of a few intensities.
>There was a light pen on the PDP-1, but I never saw
>it used on the PDP-6.  It worked by setting Program
>Flag 1 on the PDP-1, so it may not have been brought
>with the display.
>    John Sauter (J_Sauter@Empire.Net)

######

From: jmfbahciv@aol.com
Newsgroups: alt.sys.pdp10
Subject: Re: Bus-attached displays
Date: Sun, 29 Jul 01 10:29:39 GMT
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In article <h8s7mt8t5fprfp6m5b3tjbsh4g08uku5ul@4ax.com>,
   R.J.S. <not@available.right.now> wrote:
>VB06C
>
>In Marlboro, there were 4.  They were on Dick's system and used for
>doing the print sets and such.  (All the "S. Foonley" pages!)
>(Dicks's system ran SUDS, the Stanford University Drawing System.)
>
>There really were a GT40, but had minimal code in the -11.  They were
>connected thru a DL10 (hence the limit of 4), and the graphics engine
>got it's vector list from the -10 via the DL.

But these were different than those VBCs..weren't they?
And Dick's system ran TOPS-20 underneath the SUDS,  didn't it?

<pins>

/BAH

Subtract a hundred and four for e-mail.

######

From: jmfbahciv@aol.com
Newsgroups: alt.sys.pdp10
Subject: Re: Bus-attached displays
Date: Mon, 30 Jul 01 08:13:32 GMT
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In article <5659mt84eeqmuc270gdse3rtpql5rdp31s@4ax.com>,
   R.J.S. <not@available.right.now> wrote:
>On Sun, 29 Jul 01 10:29:39 GMT, jmfbahciv@aol.com wrote:
>
>>But these were different than those VBCs..weren't they?
>
>Yes, but they were bus attached.
>
>>And Dick's system ran TOPS-20 underneath the SUDS,  didn't it?
>
>Swap read error.

ROTFL.  Smarty pants.  

What did the -20 do when it got one of those?

/BAH

Subtract a hundred and four for e-mail.

######

From: R.J.S. <not@available.right.now>
Newsgroups: alt.sys.pdp10
Subject: Re: Bus-attached displays
Date: Sun, 29 Jul 2001 18:58:02 -0400
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On Sun, 29 Jul 01 10:29:39 GMT, jmfbahciv@aol.com wrote:

>But these were different than those VBCs..weren't they?

Yes, but they were bus attached.

>And Dick's system ran TOPS-20 underneath the SUDS,  didn't it?

Swap read error.

>/BAH
>
>Subtract a hundred and four for e-mail.

######

From: jmfbahciv@aol.com
Newsgroups: alt.sys.pdp10
Subject: Re: Bus-attached displays
Date: Tue, 31 Jul 01 07:51:41 GMT
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In article <9k4c9g02mda@drn.newsguy.com>,
   Tim Shoppa <shoppa@trailing-edge.com> wrote:
>In article <mtbbmt8c9mg0lhjjh8sbjos62d5tgaffbb@4ax.com>, R.J.S.@not.a.net
>says...
>>Side story:  
>>
>>Once I caused the message  "Undetected AR/ARX parity error" to come
>>out on the console of 1026 every few minutes.
>
>Is it possible that this originated the phrase "There are no undetected
>errors that we know of?" :-)

MACRO-10 always says that  "No errors detected".  That message
always made Jim chuckle.  It's also a fine test to weed out
the newbie.  Those who understand the real meaning of the 
message have great potential.

/BAH

Subtract a hundred and four for e-mail.

######

From: jmfbahciv@aol.com
Newsgroups: alt.sys.pdp10
Subject: Re: Bus-attached displays
Date: Tue, 31 Jul 01 07:56:30 GMT
Organization: UltraNet Communications, Inc.
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In article <mtbbmt8c9mg0lhjjh8sbjos62d5tgaffbb@4ax.com>,
   R.J.S.@not.a.net wrote:
>On Mon, 30 Jul 01 08:13:32 GMT, jmfbahciv@aol.com wrote:
>
>>In article <5659mt84eeqmuc270gdse3rtpql5rdp31s@4ax.com>,
>>   R.J.S. <not@available.right.now> wrote:
>>>Swap read error.
>>
>>ROTFL.  Smarty pants.  
>
>Sorry, it wasn't meant to be "smart", but that part of memory seem to
>be lost right now.

Oh, it was _your_ swap read error.  I hadn't read it that way.
That's even funnier <GRIN>.
>
>I think the -20 killed the process.
>
>At least it wasn't an "AR/ARX parrty error".  That stopped the system.
>
>Side story:  
>
>Once I caused the message  "Undetected AR/ARX parity error" to come
>out on the console of 1026 every few minutes.  After a while, I went
>into the machine room to see Steve Jablonsky, JoeF, and Rufes (from
>Field Sabotage)  reading the console, and about to crash the system to
>run diags (this was at 2 PM or so.)  So I had to fess up, to keep them
>from halting the system.

And how did you do that?  It took some doing to fool Jablonsky.

>
>They were rather pissed, but the rest of us had a good laugh.

Once in a great while, I'd have a system crasher.  To verify
that I had really caused the crash, I'd do a SEND ALL message
telling everybody to close their files, then do a SEND ALL
countdown, then try the program that crashed the system.
Then I'd get to write TW a love note with pointers to the
program and how to run it.  For some reason, the bugs I'd
uncover were always in his balliwack.

I had less pissed off people doing that than if I'd just tried
it with no warning.

/BAH

Subtract a hundred and four for e-mail.

######

From: R.J.S.@not.a.net
Newsgroups: alt.sys.pdp10
Subject: Re: Bus-attached displays
Date: Mon, 30 Jul 2001 15:11:03 -0400
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On Mon, 30 Jul 01 08:13:32 GMT, jmfbahciv@aol.com wrote:

>In article <5659mt84eeqmuc270gdse3rtpql5rdp31s@4ax.com>,
>   R.J.S. <not@available.right.now> wrote:
>>Swap read error.
>
>ROTFL.  Smarty pants.  

Sorry, it wasn't meant to be "smart", but that part of memory seem to
be lost right now.

I think the -20 killed the process.

At least it wasn't an "AR/ARX parrty error".  That stopped the system.

Side story:  

Once I caused the message  "Undetected AR/ARX parity error" to come
out on the console of 1026 every few minutes.  After a while, I went
into the machine room to see Steve Jablonsky, JoeF, and Rufes (from
Field Sabotage)  reading the console, and about to crash the system to
run diags (this was at 2 PM or so.)  So I had to fess up, to keep them
from halting the system.

They were rather pissed, but the rest of us had a good laugh.

######

From: Tim Shoppa <shoppa@trailing-edge.com>
Newsgroups: alt.sys.pdp10
Subject: Re: Bus-attached displays
Date: 30 Jul 2001 12:24:32 -0700
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In article <mtbbmt8c9mg0lhjjh8sbjos62d5tgaffbb@4ax.com>, R.J.S.@not.a.net
says...
>Side story:  
>
>Once I caused the message  "Undetected AR/ARX parity error" to come
>out on the console of 1026 every few minutes.

Is it possible that this originated the phrase "There are no undetected
errors that we know of?" :-)

Tim.

######

Message-ID: <3B7492A6.40CE892C@mail.bcpl.net>
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"R.J.S." wrote:
> 
> VB06C
> 
> In Marlboro, there were 4.  They were on Dick's system and used for
> doing the print sets and such.  (All the "S. Foonley" pages!)
> (Dicks's system ran SUDS, the Stanford University Drawing System.)
> 
> There really were a GT40, but had minimal code in the -11.  They were
> connected thru a DL10 (hence the limit of 4), and the graphics engine
> got it's vector list from the -10 via the DL.
> 
> On Fri, 27 Jul 2001 23:02:32 -0400, John Sauter <J_Sauter@Empire.Net>
> wrote:
> 
> >Frank da Cruz wrote (excerpted):
> >"Maybe there were some genuine, bus-attached, native
> >graphics devices on PDP-10s, like there were on some
> >of the other PDP-x's and -xx's, with light pens, etc."
> >
> >The PDP-6/KA10 system at Stanford had a bus-attached
> >Type 30 display that we ripped off the PDP-1.  I believe
> >it used two 10-bit fields out of the DATAO to plot a
> >point.  The Type 30 had a 1024 by 1024 resolution,
> >but only plotted white points of a few intensities.
> >There was a light pen on the PDP-1, but I never saw
> >it used on the PDP-6.  It worked by setting Program
> >Flag 1 on the PDP-1, so it may not have been brought
> >with the display.
> >    John Sauter (J_Sauter@Empire.Net)

At Case, while we had a number of VT02's to a PDP-8 to
a DA-10 interface to the KA10 bus, we also had a LDS-I
(Line Drawing System from Evans & Sutherland, presumably)
display processor dually-ported to MD-10 memory bus & KA10 bus.
The LDS-I then drove its' displays. (Most treasured
application - our little friends, the shooting spaceships)

------- 
    The Algol compiler used at Case Institute of Technology, after finding
    25 errors in the source (e.g., like you spelled BEGIN as BEGNI), would 
    print: "At this point, we suggest you try re-reading the manual." - Univac
1108