INT 6F - HP Vectra EX-BIOS - "F_IO_CTRL SF_ENABLE_HPHIL" - UNMASK HP-HIL INT AX = 0408h BP = 001Eh (driver ID for V_S8259) Return: AH = status (see #03744) BP,DS destroyed SeeAlso: AH=00h"HP Vectra",AX=0400h/BP=001Eh,AX=0404h/BP=001Eh SeeAlso: AX=040Ah/BP=001Eh