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Re: Apple IIGS Memory Expansion Cards...



Jeff Thomas wrote:

I recently, replaced my "Apple IIGS Memory Expansion Card" from Apple
Computer (Model no: BCGS6DSA26002 or 5-670-0025-A) with a 4MB "RAM GS"
card, made by Sequential Systems Inc.

I noticed that the Apple card has empty memory banks. What type of
memory modules does it require? how many pins? nanoseconds? minimum
amount needed  to operate or does all  memory banks need to be full
before the card will operate? Maximum allowable memory? I could I use
older style PC RAM from say, XT or AT (80[386])? If I insert two
megabytes on it, would it work in unison with the other card?

Thanks,
Jeff.


The Apple cards hold a maximum of 1mb. There are 3 configurations
allowed 256k, 512k, and 1mb. You have to set the jumpers after
you install more RAM. Older PCs often have compaible RAM.It uses
256k X 1 DRAM, 150ns or faster. You'd likely have to do some
real searching to find anything slower in that size.

Wayne