INT 6F - HP Vectra EX-BIOS - "F_IO_CTRL SF_DEF_LINKS" - SET DEFAULT PARENTS
	AX = 0400h
	BP = 002Ah (driver ID for V_SINPUT)
Return: AH = status (see #03744)
	BP,DS destroyed
Desc:	set the parent vectors in the physical device driver headers to their
	  system defaults
SeeAlso: AH=00h"HP Vectra",AX=0402h/BP=002Ah,AX=0404h/BP=002Ah
SeeAlso: AH=06h"F_INQUIRE"