19 Oct
1998
19 Oct
'98
12:50 p.m.
Date: Mon, 19 Oct 1998 19:44:01 -0700
Reply-to: classiccmp(a)u.washington.edu
From: Marvin <marvin(a)rain.org>
To: "Discussion re-collecting of classic computers"
<classiccmp(a)u.washington.edu>
Subject: Re: IBM AT Piggyback Memory
Tony Duell wrote:
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(a)cgocable.net
Pero, Jason D.
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.