PDP 11/03

Christian Corti cc at informatik.uni-stuttgart.de
Tue Nov 10 04:55:12 CST 2015

On Mon, 9 Nov 2015, Johnny Billquist wrote:
> Normally, you'd call them Tx, Rx and GND, but anyway...
> No, you do not need to loop back any signals. DEC didn't like to abuse modem 
> control for flow control.

What about the connections between the TTL signals and the line 
drivers/receivers? There are definitley such connections to be made in the 
Berg connector (like TTL SERIAL DATA IN on connector pin E). For EIA you 
need to connect pin E with pin M. (See also page 178 in the microcomputer 
interfaces handbook [1980]).


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