MOUSE/GAME CONTROLLER PORTS:

       CONNECTION TYPE: DB9 (MALE)

       PIN     MOUSE /        LIGHT PEN      DIGITAL      PROPORTIONAL    I/O
               TRACKBALL                      JOYSTICK     JOYSTICK
       ----------------------------------------------------------------------------
       1       V-PULSE        N/C            /FORWARD     BUTTON 3*       I
       2       H-PULSE        N/C            /BACK        N/C             I
       3       VQ-PULSE       N/C            /LEFT        BUTTON 1        I
       4       HQ-PULSE       N/C            /RIGHT       BUTTON 2        I
       5       BUTTON 3 (M)*  PEN PRESS      N/C          POTX            I**
       6       BUTTON 1 (L)   /BEAM TRIGGER  /BUTTON 1    N/C             I**
       7       +5V            +5V            +5V          +5V             -
       8       GND            GND            GND          GND             -
       9       BUTTON 2 (R)   BUTTON 2*      BUTTON 2*    POTY            I**


       *These buttons are optional.
       **These pins can also be configured as outputs.

       CAUTION PIN 7 ON BOTH PORTS SUPPLIES +5 VOLTS DC (50 mA).

       CONNECT THIS PIN ONLY IF POWER FROM IT IS REQUIRED BY THE EXTERNAL DEVICE.

       PINS 1-5 ARE CONTROLLED BY DENISE. PINS 5 & 9 ARE CONTROLLED PAULA.
       PIN 6 IS CONTROLLED BY CIA-A (PLUS AGNUS ON GAME PORT 0)

       COMPILED & WRITTEN BY PAUL ANDREWS JR