INT 6F - HP Vectra EX-BIOS - "F_IO_CTRL SF_EVENT_ON" - ENABLE EVENT HANDLER AX = 040Ah BP = driver ID (see #03741) for V_LPOINTER, V_LTOUCH, V_LTABLET Return: AH = status (see #03744) BP,DS destroyed SeeAlso: AH=00h"HP Vectra",AX=0408h"SF_CREATE_EVENT",AX=040Ch"SF_EVENT_OFF" SeeAlso: AX=040Eh"SF_CLIPPING_ON"