4116's and other memory

From: Richard Erlacher <edick_at_idcomm.com>
Date: Mon Mar 29 17:46:29 1999

If they're Intel parts, I think they're a variation of the 2117, which is an
Intel version of the 4116. It may, however, be the other way around, i.e.
the 2117 may be the variant. Back in those days, Mostek was the leader in
DRAM technology and the 41xx number is essentially theirs, though other
manufacturers used it as well. The National numbers differed from this
practice. Their equivalent was the MM5290. I'll have to go back and verify
all this, but I do believe that they can safely be replaced with 4116's or
their equivalent.

-----Original Message-----
From: Joe <rigdonj_at_intellistar.net>
To: Discussion re-collecting of classic computers
Date: Monday, March 29, 1999 2:58 PM
Subject: Re: 4116's and other memory

> I have a machine that uses 2116s. What are they? Fortunately I don't
>need any at the moment but let me know if you have any so I'll know where
>I can get them if I have to.
> Joe
>At 10:57 AM 3/29/99 -0700, you wrote:
>>If you have other "old" memory needs, e.g. 2115's (Intel 1kx1's, 25 ns) or
>>maybe something equally out of date, let me know where you would use them
>>and maybe I can help you out.
>>-----Original Message-----
>>From: Megan <mbg_at_world.std.com>
>>To: Discussion re-collecting of classic computers
>>Date: Monday, March 29, 1999 10:43 AM
>>Subject: Re: Picture of my latest haul
>>>>Who was the nut who mounted the CPU units near your ankles? Looks like
>>>>you're suposed to lie on your belly in order to read the displays and
>>>>toggle the switches!
>>>Well, the lowest of the machines (the pdp-8/e and pdp-8/f) were
>>>actually not even configured for operation... they were simply
>>>stuck in the racks, taking up space. The 8/f now has a home with
>>>Allison, so there is empty space in the 11/34 rack... which I will
>>>probably fill with an RL01 (or RL02 if I can find one).
>>>The pdp-8/a, which doesn't have any blinkenlights, was the actual
>>>operating machine for the person who owned it before... its
>>>backplane can handle a hex board, which was required for the RL8
>>>controller, apparently.
>>>The 8/e is currently out of the rack as I figure out what I'm going
>>>to do next...
>>> Megan Gentry
>>> Former RT-11 Developer
>>>| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
>>>| Unix Support Engineering Group | (home): mbg!world.std.com |
>>>| Compaq Computer Corporation | addresses need '_at_' in place of '!' |
>>>| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
>>>| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
>>>| (603) 884 1055 | required." - mbg |
Received on Mon Mar 29 1999 - 17:46:29 BST

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