/lib/udev/rules.d/80-stelladaptor-joystick.rules is in joystick 1:1.6.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | # Stelladaptor (Pixels Past / Stelladaptor 2600-to-USB Interface)
KERNEL=="event*", NAME="input/%k", ATTRS{idVendor}=="04d8", ATTRS{idProduct}=="beef", ACTION=="add", RUN+="/usr/bin/evdev-joystick --e /dev/input/%k --d 0"
# 2600-daptor (Microchip Technology Inc. / 2600-daptor)
KERNEL=="event*", NAME="input/%k", ATTRS{idVendor}=="04d8", ATTRS{idProduct}=="fa1d", ACTION=="add", RUN+="/usr/bin/evdev-joystick --e /dev/input/%k --d 0"
# 2600-daptor II (Microchip Technology Inc. / 2600-daptor II)
KERNEL=="event*", NAME="input/%k", ATTRS{idVendor}=="04d8", ATTRS{idProduct}=="f947", ACTION=="add", RUN+="/usr/bin/evdev-joystick --e /dev/input/%k --d 0"
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