Apple IIe memory board

From: Richard Erlacher <>
Date: Sun Mar 3 22:32:16 2002

I've got an add-on memory board for the Apple ///, but that certainly doesn't
count where the IIe is concerned. That one used one row of normal 4116's and
two rows of the wierd 18-pin parts with two 4116 dice on the same substrate,
bearing an Apple logo, BTW. The one I've got, is modified in terms of the
connectors, as I used it in another application, way back when, and the
connectors didn't suit me. It does count as another Apple memory board,

Could someone address that business with the 80-column aspect? I've had
several of these around and never yet had one that didn't have the key that
switched from 40 to 80-column mode. Was there an earlier version that
required this as an add-on?


----- Original Message -----
From: "Sellam Ismail" <>
To: "Classic computing mailing list" <>
Sent: Sunday, March 03, 2002 12:27 PM
Subject: Re: Apple IIe memory board

> 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
> ----------------------------------------------------------------------------
> International Man of Intrigue and Danger
>  * Old computing resources for business and academia at
Received on Sun Mar 03 2002 - 22:32:16 GMT

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