INT 62 u - FGDRIVER v4.02 - "FG_NUMLOCK" - GET STATE OF NUMLOCK KEY
	AX = 0082h
Return: AX = NumLock state (0000h off, 0001h on)
Note:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474 at AX=0000h)
SeeAlso: AX=000Ah,AX=00A4h,AX=00A8h,AX=00B1h