JOY_L and JOY_R are swapped in CPU_Def.i

[clbr]

The shoulder button defines are the wrong way around. Curious that it's not been noticed til now, maybe so few games use them.

Master:

JOY_L                   = $0010
JOY_R                   = $0020

nocash docs:

15          1st        Button B          (1=Low=Pressed)
  14          2nd        Button Y
  13          3rd        Select Button
  12          4th        Start Button
  11          5th        DPAD Up
  10          6th        DPAD Down
  9           7th        DPAD Left
  8           8th        DPAD Right
  7           9th        Button A
  6           10th       Button X
  5           11th       Button L
  4           12th       Button R
  3           13th       0 (High)
  2           14th       0 (High)
  1           15th       0 (High)
  0           16th       0 (High)

[Optiroc]

Good catch! Admittedly I've never done anything that makes use of the shoulder buttons, so this is an error that's been around for a long time. Fixed.