The alternative IC 82S191N was the lead to successfully reading the two PROMs from the NCR DMV Colour and Mono Graphics boards ... they're now included here

DMV ROM addendum ... updated 2012-05-28

Andreas now also was able to read the PALs from the Rainbow graphics board correctly, they're included here:

Rainbow ROM addendum - updated 2012-05-28


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