weekend haul>> HP 1000 ?

I just got back from a three day hamfest. Boy, did I get a LOAD of stuff!!!! My truck was dragging all the way home! It'll be days unloading and sorting this stuff. One of the interesting things that I got I **think** may be part of an A series HP 1000 but I can't find any of the part numbers in my HP catalogs. The serial number on the power supply indicates that it was made in 1980. Here's a description of it. A large 19” rack mount box, marked “Hewlett Packard 12979B I/O EXTENDER” It’s 19” rack mount box, 23” deep and 9” tall. It has a flat front cover held on by two 1/4 turn fasteners. It has nine slots in the back and nine slots in the front. The back slots are numbered 0 through 7 then 10. the front slots are numbered 11 through 17 then 20 and then DC PC. These cards are currently in it. slot PN Marking (3) PN 02100-60060 marked TERM (11) and (12) PN 12979-60029 marked I/O BUFFER (13) PN 12566-60032 marked MICROCIRCUIT (14) and (15) PN 59310-60101 marked BUS I/O (16), (17) and (20) PN 12566-80024 marked GRD TRUE IN OUT (DC PC) PN 12898-60001 marked EXT. D.C.P.C. All the cards have a card edge connector on the outside edge except for the TERM and EXT DC PC cards. I also got a LARGE box of cables that I *think* are for this device. They all have connectors that plug onto the card edges. Joe