Int 16 Fn 6F00 - HP Hil Vectras - Hp Hil Extended BIOS Installation Chec [b] AX = 6F00h BX = 0000h Return: BX = 4850h if present Notes: called by recent MS Mouse drivers looking for an HP-HIL mouse supported by ES, QS, and RS series HP Vectras See Also: AX=6F0Dh