Re: IIgs RAM Card Identification

["Polymorph" <polymorph69@hotmail.com>]

Ed Eastman wrote:
> Polymorph wrote:
> > Hi Ed,
> >
> >> I notes from the scans that it looks like the banks may be arranged
> >> vertically.
> >
> > Really?? That is definately one thing I didn't try. I interpreted the
> > writing on the front side of the card to mean that it had the same bank
> > arrangement as the Apple branded card
>
> Well it seems odd, but tha's just the way it looks to me.  I have not
> traced the wires and could be totally incorrect.  But go ahead and try
> placing 16 chips towards the east or west end and see what happens.
>
> > You are very gracious in your offer, but unfortunately I am located in
> > Australia, so postage costs may be an issue.
>
> 8 chips to Australia is a time consideration, not a cost...  Postage
> would only be $10 or so considering how light they are...  (Not really
> willing to overnight them for the cost.)
>
> Thankx,
> Ed

Thanks Ed, I'll give it a go and post my results.

So just to clarify, if I were to load the chips in a vertical
arrangement would be like the following:

256K:
 XXXX OOOO OOOO OOOO
 XXXX OOOO OOOO OOOO

512K:
 XXXX XXXX OOOO OOOO
 XXXX XXXX OOOO OOOO

where -  X = DRAM installed;   O = Empty

cheers,
-p