
Apple II Computer Info
the PC "FlightStick" when plugged into our Apple II+.
Most likely, you will find that the a 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:
X (horizontal) Left= 0 Right= 255
Y (vertical) Up= 0 Down= 255
For adjusting, use a program which continuously reads and displays X
and Y stick values. The program below does this and displays "B0" when
Button 0 is pushed and "B1" when Button 1 is pushed. Do a CTRL-C to exit.
20 PRINT "X= "; PDL(0); TAB(15); "Y= ";PDL(1); TAB(30);
30 IF PEEK(49249)>127 THEN PRINT " B0";
40 IF PEEK(49250)>127 THEN PRINT " B1";
50 PRINT: GOTO 20
Experiment with capacitance values between .002 uF and .01 uF to get
the best 'spread'. For easier fine-tuning, add the 50K-100K trim pots in
series with each capacitor.
The converter I built fit inside heat-shrink tubing. Putting it in a
small plastic box may be better. You can mount the trim pots (and/or
switches with fixed "trim resistors") and select between settings for a
'fast' (short swing) Game Stick and 'normal' (full swing) Graphics Stick.
Rubywand
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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 : 339 of 572
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