key map of E2?

[fanofcc]

Hi all.Please show me the number of E2 keys?example:
ROKR E2 key mapping:
Joystick Center   =  013
Joystick Left   = 276
Joystick Right   =  275
Joystick Up   = 273
Joystick Down   = 274
Left Shorcut   =  290
Right Shorcut   = 292
Volume Up   = 280
Volume Down   = 281
Hang Up      =  283

above is key map of RockBox,i want to change function of E2 keys in RoxBox,i know i must edit button.cfg file,but  i don't know what number i need replace in this file!
I want to use "2","4","6","8" to SCROLL_BACK,LEFT,RIGHT,SCROLL_FWD in Rockbox,my joystick is crash so i can't use it.
Please help me!

[keaglez]

Hmm...im not sure... The rockbox keymap looks different.....
ADD:
Ah...its work...
Here is the number keymap:
49 - 1 key
50 - 2 key
51 - 3 key
52 - 4 key
53 - 5 key
54 - 6 key
55 - 7 key
56 - 8 key
57 - 9 key
48 - 0 key
42 - * key
35 - # key

Good luck!

[GeozTsai]

but why does the gameboy emulator AX look different?