Subject: Re: 1meg cards for the //e
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From: bluphoenyx@aol.com (BluPhoenyx)
Newsgroups: comp.sys.apple2.programmer
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Date: 27 May 1999 23:25:20 GMT
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There were a couple of vendors. I don't know if all of them used the same
methods, but Applied engineering's method is this.

Bank select register is located @ $c073
You place a value between $00-$0f here then access the aux memory as normal.
They advise using a routine to test the actual amount of banks available by
writing a byte of data to each bank then reading it back and testing it for
validity, counting the valid banks. Compatability reasons. I think most of the
bank selectable cards use this method. Applied's IIe ram cards and Zram cards
do. The Apple slot card is different though. I don't have any info on it. Never
used it cause I have a //c. The emulator's I've tried use this technique
though. Such as Apple 2 Oasis and ApplePC 2.52. These are the emulators I
recommend to PC users. If you are into emulators, Apple Oasis is the most
configurable, but it's shareware @ $25.

BluPhoenyx@Aol.com