Hey, I used one of those in an accountants in the early 80's, with the same weird orange and black screen. I recall there being no "enter" key, but several keys marked OCK1, OCK2.. etc (Operators Control Key). That was a good piece of design rather than a single "Ctrl" key on other machines.
I swear that printer could be heard several streets away!
We had a hard disk cabinet that took "cassette packs" with disk platters in them (maybe 15 inches in diameter). The engineer used to have to come out to it and re-align the heads every couple of weeks as they were not very stable.
I didn't realise there were games for it, dammit. I managed to get hold of a Cobol compiler for it, but with no other technical information about the B80, didn't get very far. No internet in those days kids.
I can't recall if the B80 had it, but there were small satellite workstations that looked similar and had a small silver button under the desk at exactly knee height. On my first day I was introduced to the "shit button". So named because if you accidentally knocked it, it reset the machine and lost all your work. Most people taped a small cover over it.
Fond memories of the B80, and it's big brother the B800 which I used at a different job. Boy was that sophisticated... it needed a paper tape through a "rat trap" to boot it.