Emulator

Affected Games:
Metroid Prime 1 and 2

Short Description:
When L-Analog is pressed down very fast, the game will not recognize it as being pressed at all.

Steps to reproduce:

• Configure a gamepad with analog triggers
• Stand in an area where there are no objects to lock on to
• Select the combat visor
• Observe that when moving the main stick left/right, Samus will turn left/right
• Press the L Trigger normally.
• Observe that a small cross will appear on screen and when moving the main stick left/right, Samus will strafe left/right
• Release L
• Press L down very fast.
• If you pressed fast enough you can observe that Samus will still turn when moving the stick and the small cross will not appear, even though L is held down

Notes:

• This behavior is the same on Windows and Linux
• The same behavior can be observed when pressing L-Analog EXTREMELY slowly
• I cannot exclude the possibility that this is a bug within the games themselves

Video:
http://www.mediafire.com/?phggc0mu0t2zcok
In this video I demonstrate the behavior. First, I press the L Trigger slowly; you can see the small cross appear on screen and Samus will strafe when I move the main stick. Later, I press the L Trigger down very fast; the cross does not appear and Samus will turn when I move the main stick.