So, if you find yourself in possession of an ADM-3A terminal, and want to attach it to a DragonFly machine, here is the /etc/ttys config (viewed on the ADM-3A itself of course) and the front switch settings that worked for me.
Remember, ^h deletes.
A running description of activity related to DragonFly BSD.
There is a typo in the header.
But nice to know ;)
Btw I think I do rember using an adm-3a back in the bsd 4.1 days or so. It was around 1984.
Typo fixed – thanks for noting it.
Btw my memory wasn’t that good: 1984 was 4.2 bsd, not 4.1.
See https://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/share/misc/bsd-family-tree