Re: NadaNet (was: Re: Ethernet & Internet on Apple 2)

[mjmahon@aol.com (Michael J. Mahon)]

I wrote:

>Glenn Jones asked:
>
>>Will this work using IIgs motherboards via the 16 pin DIP? I have a pile of
>>ROM01's.
>
>Yes, it should work fine if the IIgs is run at 1MHz.  It relies only on the
>pushbutton 1 input and the annunciator 1 output. 

<snip>

It occurred to me after posting that there may be another issue with
the IIgs, as there is with the later (Platinum) //e's.

Apple took a very brute-force approach to meeting EMI requirements
on these machines, and put a large-value capacitor across the 
pushbutton inputs.  This effectively prevents high speed communication
until the capacitors are removed.

I always found the capacitors a very uncivilized solution to a practical
non-problem, and it is incompatible with many game-port add-ons that
worked well with earlier Apple II's.

-michael

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