ps2 memory - with weird square silver IBM Circuit packaged memory on the ...

jim stephens jwsmail at
Sun Jan 29 05:40:48 CST 2017

On 1/28/2017 5:32 PM, COURYHOUSE at wrote:
> Thanks Guy!
> Mystery solved!
> I  will put this note in with the memory stick..
> Ed# _www.smecc.org_ (
Guy, you may correct, but I think also a lot of IBM tools for putting 
things in cans, creating circuit boards, etc. were common, so if they 
got something that was not packaged by the customer it ended up in a 
can, as you say unless it needed different cooling.

Same for circuit boards.  I was told at one time there was a set of 
tools that would do the layout and the whole mess that everyone shared.  
At least for some of the oddball stuff you see for the PC, such as the 
3270 adapters, being the most conspicuous.  There are others that have 
technology you'd see if you opened a mainframe of the 43xx or so 
variety, and it looked an awful lot like the 3270 pc cards did.

But others clearly were done with the same technology, and were not 
mainframe gizmos.  (can't recall example at the moment though).

I know from the work I did in the last three years that IBM probably had 
embraced outside tools much more now rather than using their own owned 
tool sets.  I don't have direct evidence, just an impression.

If you feel like sharing the part, by the way, my buddy would appreciate 
it if it is for a model 30.  Likely could be for a model 60 or 50 just 
as well though.

> In a message dated 1/28/2017 6:00:46 P.M. US Mountain Standard Time,
> ggs at writes:
> At one  time IBM was the largest manufacturer of memory and consumed *all*
> of
> it  internally (e.g. for IBM products).  At the time all of IBM’s ICs were
> in
> the “aluminum” cans unless they needed more exotic cooling.
> In  the PS/2 days, we ended up using some IBM produced memory because we
> could
> get a better internal transfer price than buying out in the market  because
> the
> various IBM fabs had a bit of excess capacity and wanted it  used.
> TTFN - Guy
>> On Jan 28, 2017, at 11:44 AM,  COURYHOUSE at wrote:
>> The  talk of  PS2 memory  brought something back  to me I  have in a
> drawer
>>   here...
>> ps2 memory -  with weird square silver IBM   Circuit  packaged memory on
>> the stick.
>> What is the  story on this? was IBM making it's own memory chips  or
> just
>> repackaging them into
>> their  silver square  packaging?
>> Now  I will have to   dig these  things  out.
>> Thank  Ed#    _www.smecc.org_ (

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