Int 7F Fn 3C  - Alloy Mw386 - Enable/disable Autobaud Detect               [N]

   AH = 3Ch
   AL = new state
        00h disabled, 01h enabled
   DL = user number (FFh = caller)
   DH = machine number for user

Return: CF set if invalid user number

Note:  only available to supervisors

See Also: AH=3Dh