Apple II Computer Info
Here is the conversion info, even tho I've never tryed it, myself:
Newsgroups: comp.sys.apple2
Subject: Re: Joysticks for Newbie? IIc and IIe.
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
values to occur near the extremes of stick movement.
Use a program which continuously reads and displays X and Y stick values
and experiment with capacitance values between .002 uF and .01 uF to get
the best 'spread'.
Values of .01 uf (H-axis) and .005 uF (Y-axis) worked well on the
PC
"FlightStick" when plugged into our Apple II+.
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Apple II Computer Technical Information : Apple II Family Hardware Info
ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 351 of 572
(22 pages)
(16 pages)
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