So no just sticking a DEUNA board set in that BA11-K?
It's a long story. The hardware (a DEUNA in the 2020 UBA/UNIBUS box) will work, but
the software never supported it. It was mostly a memory issue. The KS10 is limited to
512KW of physical memory and space is very tight on the 2020.
Supposedly Mark Crispin had Ethernet working with TOPS20 on his 2020, but that was never
released as a product and the status of that software today is, I think, unknown.
Bob