Int 14 Fn 04  - Multidos Plus Iodrv - Initialize Port                      [S]

   AH = 04h

Return: port initialized; if Hayes-compatible modem, a connection has been
     established

Note:  the port number is stored at offset BEh in the Task Control Block
     (see INT 15/AH=13h"MultiDOS")

See Also: AH=00h,AH=05h"MultiDOS",AH=20h"MultiDOS",INT 15/AH=13h"MultiDOS"