ChatGPT did, however, manage to track down the Hungarian mainframe I worked with in the mid 1980's tho

Our one was called a VT6000.

It had 1MB RAM, a 2MB cache and twin 300MB CDC disk drives (they looked like top loading washing machines).

It had16 dumb VT100 terminals and a huge, extremely noisy line printer.

I wrote COBOL accounting software on it called RelAcs (Real Time Accounting System)