I finally tracked down a Programmer’s Keyboard for my 9100. I don’t know how widely it’s known, but there were two different versions of the keyboard. The only photos I’ve seen are the earlier model, which meant that I almost let this one slip away. It was on eBay, new old stock, for $36 shipped! All the info is in the manuals, if you look. I had always wondered why the keyboard illustrations in the Programmer’s Manual didn’t match the photos of the keyboard I’d seen. It’s because I read scans of a later (1991) printing, which has illustrations of the later revision of the keyboard. I haven’t seen a 1988 printing, but I bet it shows the earlier keyboard layout. The various 9100 service manuals list different part numbers: 9100A Supplemental Parts List (May 1988), fig. 5-21, p. 5-53 ---- Lists p/n 5-64995-131. This seems to be the more common version of the keyboard. It has a block of (mostly) 2u keys on the far right, angled RETURN key, and arrows by the SHIFT and RETURN keys. Photo: https://i.imgur.com/undefined.png The Service Manual which this is a supplement to (9100A Service Manual p/n 809210, May 1988) only lists the Fluke stock number, 757120, in fig. 5-20 on p. 5-50. 9100FT Service Manual (p/n 910476, November 1991), fig. 5-18, p. 5-49 ---- This has new stock and parts numbers. s/n 887216, p/n E04008051. The later revision more closely resembles a 1990s 101-key PC keyboard, with separate numpad and arrow keys. It seems to work fine on a 9100A. Since this an uncommon keyboard, I naturally tore it apart and took some photos of the inside before even plugging it in. These are available on https://www.dropbox.com/s/sa34h6252476012/9100FT-Keyboard.zip?dl=0, and probably ought to go into the TTL FTP. It seems to be second-sourced from KeyTronics, which might explain the lack of documentation (schematics, etc) in the Fluke service manuals. Even though it looks like a PC keyboard, it uses uncommon capacative (hybrid mechanical) switches mounted on a metal plate, and feels much sturdier than the 1990s rubber dome board I was expecting. The controller is an 8031, with the program in a 2764 EPROM. I’m going to see if I can dump it, though it’s soldered in and I’d prefer not to remove it. There are two DIP switches which are accessible via a panel on the bottom. I have no idea what (if anything) they do. I’ve built a few keyboards from kits, so I was hoping that with a good look inside, it might be possible build a reproduction with the same microcontroller and program. While the 8031/2764 is excellent news for this, the rest is a downer. There’s an Exar 22-00958-000 IC which handles the capacitive keyswitches and provides keypress data to the 8031. It looks like the switches and controller are hard to come by, which renders the program on the EPROM useless. Still, maybe someone could adapt another KeyTronics board, as they seem to be fairly similar. Here’s a couple pages I found that have info on KeyTronics keyboards, and might be useful. http://www.vcfed.org/forum/showthread.php?58612-Key-Tronic-KB3270-Plus-ROM-d... http://www.seasip.info/VintagePC/kb3270.html https://geekhack.org/index.php?topic=37968.0 -- Ian _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/