> Date: Fri, 30 Apr 2004 12:42:59 -0400
> To: info-pdp11@village.org
> From: will kranz
> Subject: RS422 for PDP11
>
> Greetings:
> Did DEC or a third party make any RS422 io boards, UNIBUS or QBUS?
> It may seem immoral to some of you but I've aquired a couple
> of the 68K Macintoshes and thought they would make a cute
> terminal, but turns out there is a serial interface problem.
> If I do it I should probably just use an adapter dongle, but
> was curious.


Isn't everybody's favorite Qbus serial interface DLV11J alias DLVJ1
jumperable both RS232 and 422? Does it really matter, because creative
abuse of the interface spec usually makes the signals interchangeable.

carl
--
carl lowenstein marine physical lab u.c. san diego
clowenst@ucsd.edu
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