Int 21 Fn 5F9A  - LANtastic - Get Message Processing Flags                 [N]

   AX = 5F9Ah

Return: CF clear if successful
       DL = bits describing processing for received unsolicited messages
       bit 0: beep before message is delivered
       bit 1: deliver message to message service
       bit 2: pop up message automatically (v3+)
   CF set on error
       AX = error code

See Also: AX=5F9Bh,AX=5F9Ch,AX=5F9Dh