Re: Apple IIGS 1MB card to 4MB conversion

[Polymorph <polymorph69@hotmail.com>]

On Jul 17, 1:53 pm, Polymorph <polymorp...@hotmail.com> wrote:
> On Jul 17, 10:16 am, Donnie Bailey <don...@n.o.s.p.am.apple2pl.us>
> wrote:
>
> > A link was provided in a past post on how to convert a 1MB IIgs ram card
> > into a 4MB card. (http://www.apple2gs.republika.pl/eng.html)
>
> > I can confirm that this modification DOES work.  Six hours of puttering
> > pays off.
>
> > I set up a bit of a site along with some photos twww.apple2pl.us
>
> > Donnie
>
> Great work!
>
> I have bought all of the components to do this mod myself, and have
> made a start. However, I do not own a good de-soldering tool and I
> lost motivation for now. Especially since I just picked up another 4Mb
> card off eBay for AU$20.50 (although I had to use 2Mb of my own DRAM's
> to get it to 4Mb).
>
> Make sure you run one of the available memory checking programs on
> your card (if you haven't already) to verify that everything is
> working correctly (IMHO the best IIgs memory tester can be found on
> the Utilities disk for AppleworksGS).
>
> When I was looking at doing the mod a couple of months ago, I tried to
> relate the schematic to the images (which are of poor quality) posted
> on the original site. I noticed some discrepancies between the two (I
> can't remember specifics now). Did you notice this? Did you go
> strictly by the schematic (apart from cutting pin 27)?
>
> I hope to get back onto performing this mod soon. I'll probably just
> snip the 256x1 DRAM's from the board to make the desoldering easier in
> leui of getting a good de-soldering tool.
>
> cheers,
> -p

Sorry about double posting...Google Groups was doing something weird
*again*....   :-(

cheers,
-p