VTDAPI_Get_System_Time_Selector

; Obtain the entry point address in VTDAPI_Addr
mov ax, VTDAPI_Get_System_Time_Selector
call VTDAPI_Addr

Retrieves the number of milliseconds since the system was started or restarted. Meaningful only in protected mode.

• Returns in AX a read-only selector to a double-word that contains the number of milliseconds since the system was started if successful; otherwise returns zero.