Chris Zach wrote:
> Did AI use MA10 memory boxes?
No. It had the original 256K "moby" from Fabri-Tek, and another 256K
from Ampex. The associated PDP-6 had an older DEC Type 16x-something
16K memory.
> Did any of that stuff survive?
Maybe bits and pieces here and there. The AI KA10 went to Co
Those of us late to the party may like to know:
1. What was AL
2. Why was it famous?
3. Tell us more about Doug, and his apartment :-)
Kindest regards,
Doug Jackson
em: d...@doughq.com
ph: 0414 986878
Check out my awesome clocks at www.dougswordclocks.com
Follow my amateur radio adventures at
Doug Jackson wrote:
> Those of us late to the party may like to know:
> 1. What was AL
> 2. Why was it famous?
Not AL, but AI. Also known as MIT-AI on the ARPANET. It was the PDP-10
used by the MIT AI lab, hence the name. The Incompatible Timesharing
System was developed on their PDP-6, later
On Tue, Oct 20, 2020 at 11:26:22PM -0400, Chris Zach via cctalk wrote:
> > Or maybe a PDP-15? 18 bits plus parity.
>
> Possible, did the pdp15 use that type of board?
>
I have seen PDP-15 core memory and it is not that format. It looks like
the memory modules from a PDP-8/I or -8/L
Admittedly
Ethan Dicks via cctalk wrote:
On Tue, Oct 20, 2020 at 10:02 PM Jay Jaeger via cctalk
wrote:
I have had my system since February, 1988 when a friend and I hauled the
11/24, two RK07's a VT100 and and TU10 out of U Wisconsin Bascom Hall
for about $600.
Nice. I didn't end up working for UW-Madi
> From: Jay Jaeger
>> 2--M7134 KT24 Memory map
> M7891 UNIBUS Memory (256K, I think, presumably addressed for 0).
If that's all the memory you have, the KT24 isn't really doing anything
(well, monitoring power; holding boot PROM's; etc). Is your MS11-L configured
to be EUB memory, th
There’s a piece of core on eBay
https://www.ebay.com/itm/DEC-Digital-H214-Digital-Equipment-Core-Memory-Litton-38540-1/111384040291
which claims to be H214. The interesting thing is the label says 8K x 16 but
the silkscreen says 8K x 19.
Sent from Mail for Windows 10
Very similar to mine, however this one has only one of the core mats
un-woven. Want me to take a picture of it?
C
On 10/21/2020 1:33 PM, Richard Sheppard via cctalk wrote:
There’s a piece of core on eBay
https://www.ebay.com/itm/DEC-Digital-H214-Digital-Equipment-Core-Memory-Litton-38540-1/11
> From: Richard Sheppard
> There's a piece of core on eBay .. which claims to be H214. The
interesting
> thing is the label says 8K x 16 but the silkscreen says 8K x 19.
DEC did that a lot; used one silkscreen (and etch) for two different modules,
with differing componet sets to prod
Hm. In 1986 I was given a pair of pdp8/I's, a third 8/I that was broken,
an RK8, and a bunch of packs from UMBC's psychology lab that were in an
old closet. I could not move out the PDP12 that was in there (would
never fit in my station wagon) but I did take out the FPP12 unit.
Ah those were t
3. Tell us more about Doug, and his apartment :-)
Alas, those legends are lost in the mists and tubes of time... Only
fragments remain to cause giggles at random intervals.
CZ
I'm pretty sure the H216 was too new to have been used in an MA10 or
MB10, but I don't know which core planes or other modules were used.
They might have still been using core modules made by external vendors
like Ferroxcube.
It's looking to be the same vintage as the 11/05 memory I have (the
If that's all the memory you have, the KT24 isn't really doing anything
(well, monitoring power; holding boot PROM's; etc). Is your MS11-L configured
to be EUB memory, then? If no KT24 is plugged in, the CPU detects that there
isn't one there, and permanently, statically maps the UNIBUS straight a
My guess is the H215 has two more core fields on it since mine has 3 (18
bits plus parity). Odd they could fit up to 20 bits, maybe an early ECC
(16b+4 ECC?)
C
On 10/21/2020 7:17 PM, Noel Chiappa via cctalk wrote:
> From: Richard Sheppard
> There's a piece of core on eBay .. which
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