Int 62 Fn 00B1  u - Fgdriver V4.02 - "fg_setnum" - Set State Of Numlock K  [V]

   AX = 00B1h
   BX = new state (0000h off, 0001h on)

Note:  the FGDRIVER functions are rearranged with each major release, but
     their parameters do not change (see #3145 at AX=0000h)

See Also: AX=000Ah,AX=0082h,AX=00A4h,AX=00A8h