The documentation is at least ambiguous, so I wasn't sure

Nec 7220 docs

Next to the 7220 on the DMV graphics boards is either a M1-76161-5, a M3-76161-5 or a N82S191N/K8340 ... are those RAM or (P)ROM IC's?

Robert

NCR DMV- DEC Rainbow- Siemens PCD- ITT 3030-Oly People- Acorn A5000- Olivetti M20