Thanks, very useful info, and the manual is indeed what I was missing. But now where to find the DMS, with two cards in particular, that's not going easy to find both that match...
>> ...the recently posted IO manual says it can support ... up to >> 1.28M. >From: "J. David Bryan" <jdbr...@acm.org> >That's correct, although the machine must be equipped with the Dynamic >Mapping System (DMS) in order to access more than 32KW. For the 2112, DMS >is product number 12976A. It consists of a card (the HP 12731A Memory >Expansion Module) that plugs into slot 112 in the front card cage) and >another card that contains microcode that implements the DMS instructions; >the latter mounts to the main CPU board at the bottom of the chassis... >The "Standard Performance Memory >Systems Installation and Service Manual" (5955-4310 April 1979) details the >requirements; it's available from Bitsavers in the "1000" subdirectory. > -- Dave
