IBM AT Piggyback Memory

From: Eric Smith <eric_at_brouhaha.com>
Date: Mon Oct 19 17:08:02 1998

Marty_at_itgonline.com (Marty) writes:
> I've never seen any other pc that used these 128k (64k dip dram
> piggy-backed) chips. Regarding the numbers of the chips, they were
> standard 64k dip drams, the IBM part number is long lost on me.

The 64K DRAM dies were of course standard, but weren't they packaged
in 18-pin DIPs rather than the usual 16-pin, so that the top and bottom
parts could have their RAS and/or CAS lines bonded out to different
pins?

If you just stack two normal DRAMs, you don't get anything useful.

Eric
Received on Mon Oct 19 1998 - 17:08:02 BST