Q-Bus PDP-11 RAM Board

From: Zane H. Healy <healyzh_at_ix.netcom.com>
Date: Sun May 31 09:42:26 1998

>> The board in question is labled:
>> NSC NS23D
>> It also has three jumpers near the contacts.
>
>It's a National Semiconductor board. But I didn't know that they
>made any as large as 2 Mbytes; the largest NatSemi Q-bus board
>that I've ever seen is only 256kbytes. Can you identify the
>memory chip type and count how many are on the board?

They have a 9x8 slab of ram on it with one more at the top of the board.
The chips are "TMS 4256-15NL","EHP 8736". The circuit board itself has
1985 imbedded in the board.

                        Zane

| Zane H. Healy | UNIX Systems Adminstrator |
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Received on Sun May 31 1998 - 09:42:26 BST

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