peter@hp-pcd.UUCP (07/20/83)
#N:hp-pcd:19500001:000:606 hp-pcd!peter Jul 19 12:26:00 1983 We have heard conflicting testimony on whether or not you can mix the old-style DEC 256k memory boards with the new DEC 1M memory boards in the same VAX-750 CPU under 4.1bsd (given new controller and backplane, of course). Some sources say it is a simple jumper change (explained in DEC documentation), but DEC sales says it cannot be done. We would appreciate comments from anyone who has actually done it or someone who has hard evidence that it cannot be done. Thanks, Brian Phillips ...ucbvax!hplabs!hp-pcd!brian ...harpo!hp-pcd!brian ...ogcvax!hp-pcd!brian
ra@rlgvax.UUCP (Rick Adams) (07/21/83)
Both National Semi and Trendata/Standard say that their current 256k memory boards are incompatible. This coupled with same statement from the local DEC rep seems pretty definite to me. National claims to have prototypes available in September with production boards in early 1984. Trendata/Standard is willing to ship you a Beta test (their term) board immediately with no promises. We don't have our new vax (780 if it matters) yet, so I have no actual hands on experience, but the fact that the DEC compatible vendors won't sell you working boards sort of forces you to go with DEC memory. Rick Adams CCI Office Systems Group Reston, VA {allegra|seismo|ihnp4|mcnc}!rlgvax!ra