Int 7F Fn 3A  - Alloy Mw386 - Get Terminal Parameters                      [N]

   AH = 3Ah
   DL = user number (FFh = caller)
   DH = machine number

Return: CF clear if successful
       AH = terminal driver number
       AL = baud rate (00h = 38400, 01h = 19200, etc)
       CL = parity (00h none, 01h even, 02h odd)
       CH = handshaking (00h none, 01h XON/XOFF, 02h DTR/DSR, 03h XPC)
   CF set if invalid user number

See Also: AH=3Bh