Replicas - was Re: *** Ideas needed for developing interactive

On Sun, Sep 12, 2004 at 09:28:25PM -0700, vrs wrote: One could, but the interconnection thing would be a killer - I suppose the cheapest way to do it might be a "fatherboard" arrangement with a nest of pins for the backplane, and pin receptacles on the modules (though the more traditional pins-on-the-module-and-sockets-on-the-motherboard would be about the same cost, probably). In the case of a PDP-8 design, there are several busses that might have to be run, but you could sort-of cheat and aggregate the registers (like is done with the 6 x M220 cards in an -8/i or -8/L) to group things together. I would expect that in addition to the registers themselves (AC, MD, MA...) whatever memory there was would fit nicely in the same area. -ethan -- Ethan Dicks, A-130-S Current South Pole Weather at 13-Sep-2004 04:30 Z South Pole Station PSC 468 Box 400 Temp -53.6 F (-47.6 C) Windchill -83.90 F (-64.40 C) APO AP 96598 Wind 9.69 kts Grid 339 Barometer 671.6 mb (10945. ft) Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html