On Tue, 13 Oct 1998 08:18:57 -0600  Herb Peyerl wrote:

> Simon Burge <simonb@telstra.com.au>  wrote:
>  > I pulled apart one of our 5100's, and it's got 6x 16MB simms (plus
>  > some prestoserve, but I'll leave that out for now), each with 36x
>  > TC514100J-10's (4Mx1?) - 18 on each side, layed out in two groups of 9.
>  > Between the two groups of chips on one side looks like two DIP resistor
>  > packages, and on the other side is 3 small black thingies - maybe
>  > capacitors.  Stenciled on the edge of the board itself is "5019079-01".
> 
> nope.
> 
> My single-sided simms have 10 chips on them with pads on the backside
> that aren't populated.  There are no other components on them
> at all.  The chips are TC514400ASJ-70 which I presume is 4Mx4 70ns.
> 
> The double-sided simms are 10 chip each side, no other components,
> with KM44C4000J-7 on them. I'm not sure what these are but they have
> 4 more pins on each chip than the aforementioned TC514400's so maybe
> they're 8Mx4?

> and again, 100 pin simms...

514400's are 1M*4, and KM444000's are 4M*4 (the chip list
[http://www.hitex.com/chipdir/chipdir.html] is your friend :), so you've
got 4MB and 32MB simms.  I'd imagine that most of the VAXstation type
stuff would use similar parts to the 2100/3100 and 5100 (and 32MB sounds
large!), so I guess we're talking about Alpha memory...

>  > Are we talking about the same thing?
> 
> so apparently not.  maybe they're out of some Alpha or something?
> Or a 5500? I got a lot of "send them to this address!" replies but
> I suspect no one really knows what they are.

Definitely not 5500 - they're large QBus boards.  I'd guess the same
would go for the 5400 and 5800 too, but I haven't seen either of those.

>  > If you've got a 2100 or 3100 around, the 5000/1xx will take the same
>  > simms (in pairs, for a maximum of 32MB).
> 
> yeah.  I gave away 16M of 2100 memory last year not thinking. Oh
> well... 
> 
> actually, I just ripped apart another 3100 I had lying around that I was
> sure had nothing in it and found 8 simms of some description.
> 
> they're 80 pin and say BE3-1 on them and have 2 * 9 * MT4C1024DJ-10
> on them... Maybe 2M simms?

The 3100 only supported 2MB simms, so if it worked that's what it would
be.  "tms4c1024-12dj" (chip list again) are 1M*1, so I'd guess they're
2MB.

Simon.