Re: IIgs RAM card Question

[supertimer@aol.com (Supertimer)]

"John King" <joki@eskimo.com> wrote:

>Just won a bid on ebay for an Apple IIgs RAM card (it says Apple IIgs on the
>card)
>
>Now I'm wondering what I will get.
>
>It is populated with 4 banks of 8 chips, the seller said it had 1 meg on it
>with room for 3 more megs.
>
>? Is this card roughly equivalent to the card that Alltec is selling? I know
>they have a 4 and 8 meg cards. One bid description of a IIgs RAM card
>mentioned something about DMAs and I thought "uh oh", what RAM cards don't
>support that, and does it matter? I know what DMA is, but are there cards
>out there that differ in DMA support, and what implications could these
>differences mean w.r.t performance and software compatability?
>
>If you know what chips I need to fill the board, does anyone have some for
>sale?

If this card is what I think it is (namely, the Apple IIGS Memory
Expansion Card that Apple sold), then it only supports 1MB.
If this is so, the seller is misleading.  However, there certainly
were 4MB cards available.  Applied Engineering made some
of these.  I just don't remember any with Apple IIGS printed on
them.

Very few cards, however, compare to the one Alltech sells
which is really the best.  This is because Alltech's card goes
all the way up to 8MB and does so with the old 1MB 30-pin
SIMMs.  You can find these SIMMs in almost any old
computer, Mac or PC.  30-pin SIMMs were the standard for
a long time.