> From: Bob Smith > 8110 for MOS memory, and 8120 for bipolar memory is what field guyde > list says.
Well, the early bipolar MS11-C (1K boards) used the M8110 during early production (see e.g. DEC-11-HMSAA-D-D, pg. 1-1), and apparently then switched over to the M8120. I've only seen the later MS11-A bipolar (4K boards - dunno why it's in reverse alpha order) associated with the M8120. > I think the there was some change from special select parts and a move > to schottky 74S series around the time of the 45/50 days. I wondered that, but the MS11-C and MS11-A are the same speed (300 nsec); although maybe the M8110 was a bit marginal, and component changes in the M8120 made it more robust? I guess I'll have to do it the hard way, and compare the ICs... :-( > 11/40 was faster than 11/35, but if you changed a wire, they were the > same. I've heard of other manufacturers doing that, but I thought the /35 and /40 were identical, except for the number on the console inlay, and the sales channel? Noel