Re: Apple IIgs Memory Card - 4 MB Modification

["Michael J. Mahon" <mjmahon@aol.com>]

D Finnigan wrote:
> I was just looking at the site that has photos and schematics on how to do
> this. I just got a spare IIgs Memory Expansion card yesterday to try it on,
> and I've got a nice baggie of 30-pin SIMMs waiting to be used.
>
> Does anyone have any experience on performing this modification? I am new to
> soldering.

I certainly don't want to discourage you, but I'd recommend getting some
practice on something that doesn't matter much before attempting this
modification.

Soldering is a skill that takes some practice, and within a couple of
hours, you will observe that your skill improves significantly.  Before
starting and about 30-45 minutes into your practice, review one of the
excellent tutorial on electronic soldering on the web.  (It will make
a lot more sense the second time around.  ;-)  Here's a good one:

http://www.youtube.com/watch?v=I_NU2ruzyc4

ALWAYS use a low-power iron (15-30 watts, max, temperature-controlled
ideally) and (non-acid) fluxed solder of small diameter (wire gauge 26-
28).  I prefer rosin core tin-lead solder for electronic work, but there
are other flux and alloy choices available.  Just be sure to avoid any
ACID core solder--that will destroy component leads and circuit traces.

-michael

NadaNet and AppleCrate II: parallel computing for Apple II computers!
Home page: http://home.comcast.net/~mjmahon

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