Int E0  - Real/32 - "c_cattach" - Conditionally Attach To Default Console  [O]

   CL = A2h

Return: AL = status (FFh = console attached to another process)

Note:  if the console is currently owned by another process, this function
     will return an error code instead of attaching or waiting

See Also: INT E0/CL=93h,INT E0/CL=94h,INT E0/CL=99h,INT E0/CL=92h