On 9/25/2019 2:00 PM, Brent Hilpert via cctalk wrote:
> On 2019-Sep-25, at 3:07 AM, Guy Dunphy via cctalk wrote:
>
>> Does anyone else recognise some of the other boards?
>
>
> 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
