kb mode was UNICODE
[ if you are trying this under X, it might not work
since the X server is also reading /dev/console ]

press any key (program terminates 10s after last keypress)...
0x9c [enter]
0x3b [F1]
0xbb 
0x3c [F2]
0xbc 
0x3d [F3]
0xbd 
0x3e [F4]
0xbe 
0x3f [F5]
0xbf 
0x40 0xc0 [F6]
0x41 
0xc1 [F7]
0x42 0xc2[F8] 
0x43 0xc3 [F9]
0x44 0xc4 [F10]
0x57 0xd7 [F11]
0x58 [F12]
0xd8 
0xe0 0x5f [fn]+[F1]=sleep
0xe0 0xdf 
0xe0 0x20 [fn]+[F7]=mute
0xe0 0xa0 
0xe0 0x2e 0xe0 0xae [fn]+[f8]=vol down
0xe0 0x30 [fn]+[F9}=vol up
0xe0 0xb0 

All other combinations of [fn]+[F_] were non-responsive