Was this the version produced by Zentec after they bought LSi ? does it have a small microprocessor CRT board inside?
Pics and rom dumps would be useful.
Jerry Walker had a repair series on YouTube for an ADM3 terminal with a small board inside. I can't recall whether the machine was his or someone else's, and I don't know if this is the Zentec article you mention, but he may still have access to the machine for photos and ROM dumps.Was this the version produced by Zentec after they bought LSi ? does it have a small microprocessor CRT board inside?
Pics and rom dumps would be useful.
He did three or four ADM3 terminal repair series. I think the latest ones were his the first 1 or 2 were repairs. He did reverse engineer the main PCB which he sold for a while. Not sure if he still has them for sale.Jerry Walker had a repair series on YouTube for an ADM3 terminal with a small board inside. I can't recall whether the machine was his or someone else's, and I don't know if this is the Zentec article you mention, but he may still have access to the machine for photos and ROM dumps.
I was hoping that would be the answerback board plugged into the regular board, but it seems to be a not-so-dumb terminal board from a very late "Tenth Anniversary" ADM-3. There is almost no information about answerback in the service manual beyond "it goes here". I try to think about how it could have been done with a small PROM and discrete logic, and it makes my head hurt.ADM3 terminal with a small board inside
That second picture answers the question I had about where those config switches went. They almost could have put an access cover to allow changing them without opening the clam shell.DIP switches are in different places and numbered differently
Wow, it works, nice! Now I'm a bit jealous - I wish that I wasn't moving, but more, I wish that I hadn't been so lazy. I'm glad that this went to you.