Apple II Computer Info
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### FILE : joystick.pcmod
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### Created : Sunday, January 14, 1996 Modified: Sunday, January 14, 1996
### File Type: "TEXT" File Creator: "LMAN"
### File Size: 2766 bytes 2 KB
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Newsgroups: comp.sys.apple2
Subject: Re: Joysticks for Newbie? IIc and IIe.
Date: 6 Jan 1996 07:27:15 -0500
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Re question: What joystick can I use on a IIc and where can I buy one?
Same for a IIe. ...
When John Dobbins emailed a question about stick wiring, it suddenly
dawned upon me that I've never seen a modern, pure PC stick converted for
use on an Apple II or a "PC-to-Apple converter cable". It seemed like a
good idea to actually try building a converter cable.
My PC stick is a standard CH Products "FlightStick". A resistance
measurement produced a disconcerting revelation: the X and Y pots top-out
around 100K Ohms-- 50K less than a standard Apple II stick! Fortunately,
you can compensate for the difference just fine by adding a bit of
capacitance. The finished converter is shown below:
To PC Stick To Apple II
(15-pin female connector) (9-pin male connector)
[1] and [4] ------------------------------ [2] +5V
[2] --------------------------------------------[7] Button 1
[3] --------------------------------------------[5] X-axis
[6] --------------------------------------------[8] Y-axis
[7] --------------------------------------------[1] Button 2
[3] Ground
add 680 Ohm resistor between [7] & [3]
add 680 Ohm resistor between [1] & [3]
add .01 uF cap between [5] & [3]*
add .01 uF cap between [8] & [3]*
*NOTE: These C values are approximate. For standard 100K Ohm PC sticks,
..01 uF pretty well guarantees you will be able to cover the full Apple II
X and Y range (0-255).
However, you may find that the stick tops-out too early in the X and/or Y
max direction. For best control precision, what you want is for extreme
Apple II Computer Technical Information : Apple II Family Hardware Info
ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 231 of 572
(22 pages)
(16 pages)
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