IBM Personal Computer AT Manual To Operations page 342

2
Did the following screen appear?
WHICH OF THE FOLLOWING IS ATTACHED:
1
=
JOYSTICK
2
=
PADDLE
3
=
NOTHING ATTACHED
1
YES Go to Step 3.
NO You have completed the IBM Game
Control Adapter tests. Press Enter
(~)
and refer to the screen for the next test.
1300-2 Test