Need help identifying HP part

From: Dan Veeneman <dan_at_ekoan.com>
Date: Tue Apr 3 11:29:36 2001

Hello,

At the Baltimore hamfest last weekend I picked up several
9825 HP-IB interface cables in a box. At the bottom of the
box was a Hewlett-Packard IC labeled 1820-0076. It's a
16-pin DIP plastic package with the following stamps:

   7476N 7751
   SA 1820-0076

The chip looks to be in good shape and is in anti-static
foam inside a plastic box.

Any ideas what device and purpose this IC might be for?

Another mystery device in the box was a 98028A "Resource
Management Multiplexer" that has four DB-15 female
connectors and what looks to be a 50-pin harmonica-style
connector at the end of a short cable.


Cheers,

Dan

PS At the 'fest I also picked up an HP 9915B (with option 002) along
    with a 98155A keyboard and three interface cables (two serial and
    one HP-IB) as well as an HP 82905B printer. I also bought three
    TI-99/4As and two expansion chassis for them (one new in box
    and the other populated with floppy disk drives and additional
    memory).
Received on Tue Apr 03 2001 - 11:29:36 BST