On 9/27/2019 4:34 AM, Paul Birkel via cctalk wrote: > -----Original Message----- > From: cctalk [mailto:[email protected]] On Behalf Of Jay Jaeger > via cctalk > Sent: Thursday, September 26, 2019 6:40 PM > To: [email protected] > Subject: Re: HP vintage boards being sold as scrap > > ... >> There is a stack of IO interface boards, including HSTs, for the HP >> 2100/1000 series there. >> >> Lower-right stack in this pic, 7 boards, boards have one red and one grey >> handle: >> https://i.ebayimg.com/images/g/n08AAOSwjY5dg5Kd/s-l1600.jpg >> >> "HS Terminal" is discernible on one of them, and the one on top looks to be >> an HS Terminal as well. >> Can't be certain about the others but they have the same size IO connector, >> they may all be HSTs. >> >> HSTs are the basic RS232 & current loop, async serial-line interface boards, >> 12531D, used for the console and such in the 2100/1000 series, >> going back to the early machines of the series. >> >> (HS is 'High-Speed', but that's relative to the late-60s, billed for up to >> 2400bps, but it is possible to operate them at higher speeds). >> >> I'd buy one for, say 60$, if someone picks up the bunch and wants to flog >> one. >> >> > > I would be in that same camp, assuming one of these would also work in a > 2112B ("M Series") machine. > > JRJ > > ----- > > They are readily available, individually, on eBay. See "HP12531". > There are currently two listed at reasonable prices, plus reasonable shipping. > > For reference, this: http://www.hpmuseum.net/document.php?catfile=236 > > You probably want the HP 12531D. Both of the current eBay listings are the > "D". > > I believe that the HP 12531C is what is visible on > http://www.hpmuseum.net/display_item.php?hw=111 > > paul > >
Thanks for the tip. (Part of not recognizing that is that I had never made the connection between the 2108B/2112B and the "1000" series before, until I read about it in this thread, and did some poking around. The HP's have not been one of my priorities in over a couple of decades, and most of of that focus was on my older HP2114B.) JRJ
