Re: Apple vs. PC Joystick (was Re: Different joystick connectors on II and IIe?)

[russotto@wanda.pond.com (Matthew Russotto)]

In article <3B7CC5AE.9020703@coli.uni-sb.de>,
Linards Ticmanis  <ticmanis@coli.uni-sb.de> wrote:
>Mike Pfaiffer wrote:
>
>>     I don't think you can get one any more. OTOH if you are handy with a 
>> soldering iron you can make one. FYI, the internals of the PC joystick 
>> and Apple joystick are compatible. An adapter was made for that device 
>> as well.
>
>Are you sure? I tried to build an adapter and the buttons worked 
>"negatively". I.e. pressing it was considered releasing it by the Apple 
>and vice versa. I suspect the Apple Joysticks have "normally closed" 
>microswitches in the buttons, no?

No, normally open.

>Not to mention the fact that the timing capacitors in my clone where 
>such high tolerance beasts that even with 25kOhm resistors in line with 
>the joystick variable resistors the whole thing was totally off centered.

It's an RC circuit, adding resistance HAS to do something.  A 25KOhm
should result inline should essentially be an open connection.

-- 
Matthew T. Russotto                                russotto@pond.com
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