The weird stuff I keep finding: 19 bit core memory?

Chris Zach cz at alembic.crystel.com
Thu Oct 22 13:04:00 CDT 2020


Ok, then my guess is this either came from a KI or a KA with a very 
different memory box. I'll put it in the collection, and oddly enough 
I'll bet that it could work in the 11/05 if one of those boards ever 
blow out.

C

On 10/22/2020 1:56 PM, Pontus Pihlgren wrote:
> I know for certain they had KL and KS machines but no KA.
> 
> It is possible they had a KI machine.
> 
> /P
> 
> On Thu, Oct 22, 2020 at 01:42:43PM -0400, Chris Zach wrote:
>> Exactly. See:
>>
>> http://www.crystel.com/pdp/DSC_0032.JPG
>>
>> So which class of pdp-10 did QZ have? KA or KI?
>>
>> CZ
>>
>> On 10/22/2020 1:33 PM, Pontus Pihlgren wrote:
>>> Does yours look like this:
>>>
>>> https://digitaltmuseum.se/021026360851/ferritkarnminne
>>>
>>> The one pictured should be from QZ which had PDP-10 machines.
>>>
>>> On Wed, Oct 21, 2020 at 05:48:22PM -0400, Chris Zach via cctalk wrote:
>>>> 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-38540-1/111384040291 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
>>>>>


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