INT 16 - HP Vectra ES/QS/RS EX-BIOS - GET HIL Extended BIOS INTERRUPT NUMBER

	AX = 6F0Dh
Return: AH = interrupt number (default 6Fh, 02h means 6Fh as well)
Notes:	supported by ES, QS, and RS series of HP Vectras
	called by MS Windows HPSYSTEM.DRV and HPEBIOS.386 to support the HP-HIL
	  input system
SeeAlso: AX=6F00h,AX=6F0Eh,INT 6F/AH=00h"HP Vectra",INT 6F/AH=0Ah"HP"