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Hardware

Joystick for Portfolio
This is a library of joystick routines for Atari Portfolio palmtop.
The joystick must be the ATARI ST and AMIGA type, not the IBM PC joystick. It is connected to the Portfolio through parallel 25pin interface and a special hardware adaptor.


[Joystick to Portfolio]
The lines are used as follows:
Pin Name Joystick
15 Error UP
13 Select Down
12 Paper error Left
10 ACK Right
11 Busy Fire
9 D7 +5V
18 GND GND

Do not run the testjoy.com on PC, for it will lock it up. The source codes are written for A86 compiler by Eric Isaacson. You may have to adapt some lines if you want to use MASM.
Test Joy: Program to test joystick.

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