Re: Mistery card

[willi@wilserv.com (Willi Kusche)]

Hi, y'all!

"Bill Garber" <willy46pa@comcast.net> wrote in message news:<B86cnfC4KfqL84GiXTWJjw@comcast.com>...
> "Michael Pender" <mpender@hotmail.com> wrote in message
> news:nuZSa.10303$Qe5.3964@nwrddc03.gnilink.net...
> > > Hello to all!
> > > Can anyone help me identifying this card?
> > > http://andrea.modelberg.it/images/mistery.jpg
> > I'm sure you are right that it is a memory expansion card, after all it
>  does
> > say "AII Memory Expansion" on it.  But I've never an Apple II memory card
> > with the ram chips socketed in that pattern before.  Usually the chips are
> > grouped together in quadrants.
> 
> Maybe someone was just messing around and decided that
> looked KOOL and left it like that. Kids. ;-)

    The chip pattern is correct.  To add 256K of memory, insert eight
256K x 1 chips, each one immediately to the left of one already on the
card.  The card has test logic in the ROM.  To test the card, insert
the card into slot 2, run "BASIC.SYSTEM", enter 'CALL -151' and then
'C20AG'.  That's a zero in 'C20AG'.

    The RAMFactor card by Applied Engineering is very similar.  Same
test sequence.  But the RAMFactor also has partitioning software in
its ROM so you can set up DOS 3.3, Pascal, or CP/M partitions on the
RAMDisk, in addition to ProDOS.

Willi