-----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
