Int 7F Fn A3  - Alloy Mw386 - Get User Login State                         [N]

   AH = A3h
   DL = user number
   DH = machine number for user

Return: CF clear if successful
       AL = login state
       00h never logged in
       01h currently logged out
       03h currently logged in
   CF set if invalid user number or user not active

See Also: AH=A2h