On Sun, 3 Mar 2002, Gary Hildebrand wrote:
> Trying to figure out what this one is:
>
> I think it is an Apple built memory board, has two rows of ram chips, 32
> total, PLCC custom chip and a 24 pin (rom?) chip at the bafk end of the
> board. Number silk screened is 670-0024-A
Are you sure it's for the //e? The only memory boards that I know Apple
made were for the //gs (if you don't count the 16K "Language Card" and the
expanded 80 column text card).
> I'm wondeing if I can just plug and play, or if there is some sort of
> software driver to access this memory? any web pages on it???
It's most likely plug and play, or else the drivers are built in to ProDOS
or GS/OS to access it. Or the "drivers" are on the firmware.
I have a 1 megabyte AE Ramfactor in my //e that can be programmed in a
very simple way. The memory is basically accessed serially through a
single memory location (or port if you will). There are three registers
where you program the address location you want to access, and then you
read the port to read the byte at that location or write to the port to
write a byte to that location. In either case, the address register is
automatically incremented. A snap to program.
I was able to record 5 minutes of reasonable quality (for the Apple ][ :)
digitized sound into it. I was able to get the whole of Led Zeppelin's
"The Song Remains The Same" recorded on it :)
Sellam Ismail Vintage Computer Festival
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Received on Sun Mar 03 2002 - 13:27:20 GMT