Caple C871i Manual do Utilizador descarregar pdf (Página 349)

100

101

Apple II Computer Info

>Won't this converter still give you button problems?

To PC Stick To Apple II

(15-pin female connector) (9-pin male connector)

[1] [4] and [5] --------------------------- [2] +5V

[2] --------------------------------------------[7] Button 0

[3] --------------------------------------------[5] X-axis

[6] --------------------------------------------[8] Y-axis

[7] --------------------------------------------[1] Button 1

[3] Ground

On the 9-pin Apple II side ...

add 680 Ohm resistor between [7] & [3]

add 680 Ohm resistor between [1] & [3]

add .01 uF cap between [5] & [3]*

optional: add 50K-100K trim pot in series with the cap

add .01 uF cap between [8] & [3]*

optional: add 50K-100K trim pot in series with the cap

The 680 Ohm resistors take care of the problem. Each resistor is

running from a Button to GND. The other end of each Button goes to +5V.

+5V

X Button Switch

|________ 'Button output to Apple'

Z 680 Ohm resistor

GND

680 Ohms holds a button's output to a logical 0. Pressing a button

sends +5V (logical 1) to the output.

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 : 349 of 572

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Caple C871i Manual do Utilizador Página 349

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Caple C871i Manual do Utilizador Página 349

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