[GreenKeys] TTY Model 56D pinout

[Stephen Jones]

On Aug 17, 2008, at 5:19 PM, Jim Haynes wrote:
>>
> At a pretty ridiculous price.  Some of those Teletype terminals had
> builtin modems, so I wonder if the one with the modular jack might be
> one of those.

I agree that price isn't even worth talking about.  This 56D has got to
be either an early prototype or custom job.  I've got a couple of early
'mules' for the 5620 (aka the 'JERQ/blit') and a 4415.  However, this
56D is unique in that it has a Model 40 style page display on its side,
not a normal 80/132 x 25 CRT.  On the back it has two RJ45 (8 pin) and
an RJ11 jack (for the keyboard).  It doesn't appear to have a built in
modem.  I have a hunch that the 8 pin RJ45 labelled 'line' is waiting
for DSR to be raised so it can get out of 'wait'.