Int 14 Fn 25  - Multidos Plus - Clear Buffers                              [S]

   AH = 25h
   AL = function
       00h only clear buffers
       01h clear buffers and deactivate
   DX = port number

Return: AH = status
       00h successful
       3Ah invalid function
       41h no such port
       42h monitor mode not active

See Also: AH=20h"MultiDOS",AH=24h"MultiDOS"