INT 2F - MDEBUG command driver - GET ADDRESS OF THE OLD INT 2F AX = D110h Return: DL = FFh ES:BX -> next program in the chain for INT 2F CX = code segment of this driver DI = offset of driver identification table (see #03079) (v1.60+) Notes: only called by the transient part of the driver must be reentrant and the driver must not chain this function to the old INT 2F