1802 Problems

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Tony,

It's been 20+ years since I built an interface to my ELFII bus for two 4K SWTech memory boards (32x1(?) dynamic rams in white ceramic DIPs).

I can't tell you specifically why SC1 is sending high signals, but back then dynamic RAMs were very common. I seem to remember that SC1 could be used for dynamic RAM refresh. I'll have to dig a bit to come up with more info - if I find it, I'll post again.

-John M.