TH09: In WinMM (non-DirectInput) mode, Key Config always ignores button presses from the 2P joypad

[nmlgc]

Meaning that the buttons for the second joypad have to be mapped by pressing the buttons on the first one. The game basically assumes both controllers to be identical, so to speak.

In DirectInput mode, Key Config works as expected – button presses are only accepted from the joypad assigned to the currently selected side (1P or 2P), and are ignored from the other joypad.