I've not
tried it, but I can't see why it wouldn't work. As you suggest,
you need the middle 4 pins o nthe connector. You _may_ need
to strap DTR to DSR (i.e. the outer pins on the MMJ) together at each
end, but I don;t think you do. DEC didn't normally use hardware flow control.
You also need a ground don't you? Does this 4 wire cable have an overall
Indeed you do. But AFAIK the 4 'middle pins' are effectively TxD, RxD,
ground and an Rx reference line. So you have ground there.
-tony