Re: Apple II SRAM card

["a2retro" <a2retro@a2central.com.remove-11ze-this>]

 To: srkh28
srkh28 wrote:
> I agree. Being backwards compatible is a must. My intention is to use
> one of the many Apple II diagnostic programs to test it. Im yet to
> locate a DRAM card schematic, saturn, language or otherwise and I dont
> know the control and bank switching scheme's off the top my head. Im
> sure its written about somewhere, but I was hoping for a source that
> was more an application example rather than academic. Either way,
> early days, ill keep looking. The Apple SRAM language card looks so
> simple and quick to implement, it was worth asking the question.

Steve, this jogged my memory and I checked through my old files.

I found a hand written note that said

128K Bank switches

C0n4 = bank 1
C0n5 = bank 2
C0n6 = bank 3
C0n7 = bank 4

C0nC = bank 5
C0nD = bank 6
C0nE = bank 7
C0nF = bank 8

with n being 8 for slot 0 .. etc

Glenn