> From: Jon Elson
> That means it runs one instruction per revolution of the drum?
I don't think it's quite that bad; ISTR something in the manual (BitSavers
has a good selection of them, it was in the Programming Manual, which is
quite interesting to look at) about how 'logical' sequential words were
actually interleaved by some factor into physical locations around the drum
(probably to prevent just this problem).
IIRC, the manual talks about how it's intended as a replacement for a
mechanical calculator (one of the hairy semi-programmable ones, I presume),
so their performance target wasn't that steep.
Noel
Hi Folks,
I recently became the owner of an LGP-30, supposedly in 'working' condition. However, the machine is roughly 2000 miles from me and will need to be transported by freight. Before it's palletized, are there any special precautions I should take to ensure its safe travel. I'm especially worried about the drum (drum lock?), but haven't been able to find a maintenance or setup doc.
Anyone out there with experience or can offer a few pointers?
Thanks,
Cory Heisterkamp
-------- Original Message --------
Subject: WTB: Apple II Workstation Card
From: "Mark J. Blair"
Date: Mon, December 19, 2016 1:31 pm
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
After playing with my Apple IIe all weekend, my new obsession du jour is
to network it with my vintage Macintoshes. So, does anybody have an
Apple II Workstation Card available for sale or trade? Act now, before I
get distracted by another shiny object! :)
--
If by chance, more than one pops up, I'd be interested as well.
I'm aware of the Uthernet card, etc. but I'm looking for the "original"
Apple card that provided Localtalk networking to the IIe.
TIA,
Steve
Well done!
Perhaps glass case it to keep it around?
How many hours into the project?
I am impressed!
Ed#
In a message dated 12/27/2016 6:41:32 P.M. US Mountain Standard Time,
hilpert at cs.ubc.ca writes:
https://imgur.com/a/JNp7m
> AI memo 238: ITS Status Report, April 1972:
>> Actually the Project MAC Dynamic Modelling Group uses a non-paged
>> early offshoot of ITS on their PDP-10.
> So it seems DM kept using the non-paged version of ITS, probably like
> what their PDP-6 did.
No, their KA10 had a paging box, made by System Concepts - probably
programmatically similar to the ones on the other two KA's (looking at the ITS
source would probably verify that).
Note that in addition to the paging box, there were moderately extensive mods
to the KA10 itself (on all three machines) to add a variety of instructions
(to do things like, IIRC, flush the paging entry cache). Did the original KA10
have XCT too? And then there were things like the MAR.
Now, how soon after their KA10 arrived it had the paging box, etc, added I
have no idea - it sounds like they ran it without paging for a while.
Noel
Indeed the opportunity of a lifetime!
Safe travels! Cory!
Ed#
In a message dated 12/28/2016 9:38:25 A.M. US Mountain Standard Time,
coryheisterkamp at gmail.com writes:
On Dec 26, 2016, at 8:49 AM, william degnan wrote:
> On Mon, Dec 26, 2016 at 10:37 AM, Christian Corti <
> cc at informatik.uni-stuttgart.de> wrote:
>
>> On Fri, 23 Dec 2016, Cory Heisterkamp wrote:
>>
>>> I recently became the owner of an LGP-30, supposedly in 'working'
>>> condition. However, the machine is roughly 2000 miles from me and will
need
>>> to be transported by freight. Before it's palletized, are there any
special
>>> precautions I should take to ensure its safe travel. I'm especially
worried
>>> about the drum (drum lock?), but haven't been able to find a
maintenance or
>>> setup doc.
>>>
>>> Anyone out there with experience or can offer a few pointers?
>>>
>>
>> - Remove all tube modules and pack them in boxes (with good padding)
>> - Remove the drum and stuff/pack it separately (remove the belt going to
>> the small motor below the drum and unscrew the drum assembly from the
frame)
>> - Remove all side panels and the cover; there's nothing more annoying
than
>> dented panels caused by fixating the frame to the panel and/or truck.
>>
>> Do you get software and manuals with your machine?
>>
>> Christian
>>
>> PS: Just found the auction... you paid *WHAT*??? Wow... for a machine
in a
>> quite battered shape. What idiot put the heavy Flexowriter on the
fragile
>> top?? Where's the cable connecting the Flexowriter to the computer? Oh,
and
>> it works without a power cable... Sorry, I had to make those comments
;-)
>> Good luck and enjoy playing with your new computer :-)
>>
>
>
> aw come on :-) This is a one of a kind thing. There is a value in
knowing
> you have a project that will keep you busy, assuming you enjoy this kind
of
> thing, for a long time. On the other end will be a lot of new knowledge.
>
> I have manuals for this machine, they're out there. I have a neat
training
> manual that was used by LGP to train new users. They really looked at
this
> thing to be a personal computer. This was some may claim by some
> definition the *first* personal computer.
>
> Bill
Guys, thanks for all the feedback. A challenge? Absolutely. But this is
likely as close as I'll ever come to having a first generation machine,
something unfathomable to me as a kid.
Apologies for the radio-silence, we've put 1200+ miles under our belts
since Monday morning. Today we cross into Alberta. Will keep you all posted on
how it goes.
Thanks,
Cory=
> From: Tony Duell
> Does anyonre know what the thickess is?
0.7 mm. (That includes the paint layer.)
> I also don't know how they are fixed to the plastic header panel ..
> Maybe some kind of double-sided tape?
One of mine (ca. 1970) has a sheet of double-sided tape which covers the
entire thing. (The glue on it appears to have hardened/failed, and the whole
works feel out of the plastic panel.)
Noel
I am starting to fill a spare H960 with my PDP8/e system. Starting as
in cleaning
up the rack, sorting out the power controller, etc....
This is a somewhat odd question for me as I don't normally care about
such things,
but I might as well try to get it right...
Anyway, I have one of those plastic banner panels for the top front of
the rack. It's
missing the insert (just the black plastic part), but I would guess
(based on what I
know of the history of the rack) it would have been the magenta one for PDP11s.
Was there a yellow/brown one for PDP8 systems?
If so, is a scan available anywhere?
Is there any way I can get it printed (and onto what) in the UK? I don't have a
large enough printer to do this.
Has anyone made said panels before? How did you do it?
-tony
