Re: IIGS memory expansion card questions

["Peter Watson" <paw77@N_O_hotmail_S_P_A_M.com>]

The obvious question (to me) is where did you get the boards - or more to
the point, why was someone selling them?

All it would take is one bad RAM chip in the soldered 256K bank and the GS
will decide there is no (more) RAM present when it does the RAM check.
-- 
Peter Watson
-- Write to MSDOS disks on the Apple IIgs?
-- Impossible!  ;-)


"Dan Foster" <usenet@evilphb.org> wrote in message
slrncf22rs.ig3.usenet@gaia.roc2.gblx.net">news:slrncf22rs.ig3.usenet@gaia.roc2.gblx.net...
> I've got two separate Apple IIGS Memory Expansion cards (both made by
> Apple and have the same design and part numbers; they're just from
> different factory runs). Both made in 1986... 256K board in Australia
> and 1 MB board in Singapore.
>
> One is a base 256K board (only 8 chips on upper left portion of board)
> and the other is a pristine 1 MB board (all 32 chips on it). The 1 MB
> board also has both jumpers set correctly for 1 MB operation.
>
> The 1 MB board is in perfect shape -- looks like literally made
> yesterday. No scratches, gouges, dust, or anything. Still looks as if it
> was taken out of an antistatic bag yesterday, whereas the 256K board has
> some minor fading of the PCB.
>
> But when I put in the 1 MB board in the IIGS, and go to the Control
> Panel... the RAMdisk only indicates the base 1.125 MB of RAM, rather
> than 2.125 MB of RAM. (This is how I'm checking to see if the system
> recognizes the memory expansion card.)
>
> Same problem on *both* a ROM 00 and ROM 03 GS -- neither recognizes
> either expansion card (256K or 1 MB).
>
> What could I be missing? (And if it's relevant, the GS has only one
> other card in there -- a ZipGS; but ruled out this as an issue because
> same problem even with the ZipGS out of the system.)
>
> -Dan