Looks like it used two serial ports, one at 9600
baud for the primary console, then the other at 300 baud. Probably a
teletype off to the side.
It is far more likely to have had a Dasher terminal, in this era.
Unfortunately I got no docs or media with this
machine. And it appears
all that is up on bitsavers are tape images?
Contact Wild Hare for all things DG.
--
Will