Int 16 Fn 4502  - Shamrock Software EMail - Get Current Communications Pa  [e]

   AX = 4502h
   DL = port number (01h = COM1)

Return: AX = 4D00h if EMAIL installed on specified port
       BL = current value of serial port's Line Control Register
       BH = flags
       bit 0: ISO code
       bit 1: pause
       bit 2: linefeed
       bit 3: ANSI sequences
       CX = selected country code (33 = France, 49 = Germany, etc)
       DX = baudrate divisor (115200/DX = baudrate)

See Also: AX=4500h