Den Tue, 17 Apr 2018 12:22:41 +0200 skrev Michał Pleban <lists@michau.name>: > Hello! > > Baltissen, GJPAA (Ruud) wrote: > > > I have some 512 KB SMD SRAM ICs laying around. And I was thinking > > if they could be used here in one or another way. The problem: the > > interface between the 8088 card and the main board only supports > > multiplexed address lines. > > The 8088 interface requires de-multiplexing the signals, but it should > not be a problem. Please take a look at my initial schematic (6509 > side not finished yet): > > https://github.com/MichalPleban/cbm2-ram-expansion Nice! Btw I've noticed that availability and price of those old-style sram's have varied quite a bit during the last years. When you already have buffers for all adress lines and most control lines, maybe it would be a good idea to add something for the rest of the lines, and choose all components so it would be possible to fit a 3.3V SRAM (assuming a 3.3V regulator somewhere). Or maybe this isn't any good idea :) -- (\_/) Copy the bunny to your mails to help (O.o) him achieve world domination. (> <) Come join the dark side. /_|_\ We have cookies.Received on 2018-04-19 23:00:02
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