Intel 80C186/80C188 Evaluation Board? Re: Single Board

[Patrick Finnegan]

Tony Duell declared on Wednesday 12 October 2005 10:56 am:
> This reminds me of an IBM colour teerminal that I rescued about 10
> years ago. I didn't get the monitor (I can't rememebr if it simply
> wasn't there, or if it was not going to be practically repairable).
> The base unit was a plinth that fitted under the monitor, the keyboard
> was somewhat PC-like, but IIRC with a different DIN plug to the PC
> (maybe the 5 pin 240 degree one).
>
> I seem to rememebr a very useful quick reference card slotted into it.
> It gave the pinouts of the connctors (amongst other things). Not just
> the comms connector, but also the monitor connector and even the
> connector for the ROM cartridge. That gave most of the processor bus
> signals, of course. I think the PSU was in the monitor, and powered
> the logic side of things via the video cable. I can't remember if the
> ICs were IBM-labelled or not, but I seem to rememebr there was enough
> info on that card to work out much of it.
>
> Somewhat suprisingly for IBM, it was an ASCII unit.

Are you sure about that?  It sounds a lot like the coax or twinax 
terminals that IBM made to go with 3270-controllers or AS/400s 
(respectively).  The ones I've seen which match your description had an 
RS-232 for a printer connection, but did their main comms through the 
coax or twinax port out the back.  I guess it might be ASCII but 
probably isn't an RS-232 terminal.

Pat
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