• Enable the secondary and tertiary fire button on Atari 8-
bit computers
o PCB version 1.5b - Remove resistor R1 and bridge
with solder, wire or a 0-ohm resistor.
▪ Connect a 330-ohm resistor between pins 5 and
7, and another between pins 9 and 7.
o PCB version 1.5c - Add a jumper across the two-pin
header on the underside of the circuit board (ensure
the 9-pin cable is connected to “VCC on 7”)
▪ Connect a 330-ohm resistor between pins 5 and
7, and another between pins 9 and 7.
• Reduce the amount of travel in the stick
o The overall distance that the stick can move is
governed by the end of the actuator (at the bottom of
the shaft) meeting the restrictor gate. This is known
as the ‘throw’.
o To reduce the overall throw, the diameter of the
bottom of the actuator needs to be increased (so it
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