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From: toddpw@tybalt.caltech.edu (Todd P. Whitesel)
Newsgroups: comp.sys.apple
Subject: Re: multiple memory cards in a GS
Message-ID: <13467@cit-vax.Caltech.Edu>
Date: 20 Jan 90 07:12:22 GMT
References: <6947@sun.acs.udel.edu>
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Distribution: comp.sys.apple
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palmer@sun.acs.udel.edu (Scott D Palmer) writes:

>Is there any other options than Applied Engineering's RAMKeeper card for
>using 2 RAM cards (Apple's GS RAM card 1 meg, and AE's GS RAM 1.5meg) with
>a GS ?  I neither require nor desire battery backup for the RAM.  Does anyone
>know of a company planning a lowcost product that would allow this ?  Is it
>possible to construct one yourself ?

Should be, but 44-pin cards are hard to find. My guess is that we could:

	1. Buy a .1" spaced board w/ 44 or more pins, only a bit wider than
the current slot connector.

	2. Cut it so there are 44 pins and it fits the memory expansion
slot.

	3. Buy two (or more?) 44 pin card edge connectors from a surplus or
electro store, and solder them on, connecting up all the wires in parallel
EXCEPT /CAS (or whatever the master CAS line is).

	4. Attach appropriate TTL to drive the CAS line of each card for it's
designated memory space. This is the fun part; you need to get creative.

problems: since you'd have the RAM boards sticking outwards over all the
useful slots, there may not be enough room, plus if the boards are heavy
they will bend the connector pins which is a bitch to fix so a small prop
or two would be necessary.

unless you buy right angle card edge connectors (not impossible but I bet
hard to find).

Todd Whitesel
toddpw @ tybalt.caltech.edu