I'm trying to pull together the HP paper I still have and will put it on the list of things to look for. Unfortunately, it didn't get scanned from the Crisis Computer manual collection in 2005 since I had assumed I had already scanned the interface cards. It's likely it is in the boxes of manuals I got from Sam Wood and those are near the front of the paper I'm going through right now. On 4/30/18 7:40 AM, Glen Slick via cctalk wrote:

And as Glen figured out, I am very interested in this too! I didn't even know such a card existed. If they have the schematics in the manual (likely), I can recreate the card. Marc On Apr 30, 2018, at 7:40 AM, Glen Slick via cctalk <cctalk at classiccmp.org> wrote: I don't see a manual for the HP 12661A DVS (Digital Voltage Source) interface card on bitsavers, or hpmuseum.net, or anywhere else. The only reference I have found is in a list of not scanned manuals here: http://rikers.org/hp2100/jeff/iocards/iocards2.txt ---------- 12661 DIG VOLT SOURCE ---------- MANUAL FOR DIGITAL VOLTAGE SOURCE PROGRAMMER INTERFACE KIT HP 12661A MANUAL NO. 12661-90004 APRIL 1971 [Cards #12661-6001 and 12661-6002, connector 02116-6178] This is the interface card that would be used in an HP 1000 to control an HP 6130A Digital Voltage Source. See Hewlett-Packard Journal, June 1968. There is the 14902A BCS driver as listed in 5950-9226_HP_Software_Catalog_Aug1973.pdf Source code for that driver is available as 14902-80001_Rev-A.src in the bitsavers HP_1000_software_collection Master Files, Type 4. Mainly just curious because I have a couple of HP 12661A interface cards without manuals that I have never tried to use and I was reminded about them when an HP 6130A made a brief appearance in Marc's latest Weird Stuff video.