31 Dec
2005
31 Dec
'05
6:34 a.m.
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.