IBM AT Piggyback Memory

From: jpero_at_pop.cgocable.net <(jpero_at_pop.cgocable.net)>
Date: Mon Oct 19 19:50:46 1998

> Date: Mon, 19 Oct 1998 19:44:01 -0700
> Reply-to: classiccmp_at_u.washington.edu
> From: Marvin <marvin_at_rain.org>
> To: "Discussion re-collecting of classic computers" <classiccmp_at_u.washington.edu>
> Subject: Re: IBM AT Piggyback Memory

> Tony Duell wrote:
> >
> > The odd thing about the IBM piggybacked chips is that the 2 64K DRAMs
> > that were soldered together have different pinouts (and neither of them
> > is the same as the 4164).
>
> Thanks much for the information! I am kind of curious now as to how rare or
> hard to get these chips are. Aside from what is already in motherboards, I
> probably only have a couple of extra.
>
Right,

In a pinch, use 256K x 1 chips! :-)
Between 100ns and 120ns even 45ns would do but what a waste to put
that in use on a brain dead 285'er.

(personal favorite: Type 2 motherboard and XT 286.)

Jason D.
email: jpero_at_cgocable.net
Pero, Jason D.
Received on Mon Oct 19 1998 - 19:50:46 BST