Int 14 Fn 82  - Comm-drv V14.0 - Port Cleanup                              [S]

   AH = 82h
   DX = port number

Return: AH bit 7 set on error
   AH bit 7 clear if successful
Desc:  reset the port to its state before the AH=81h initialization and unhook
     any interrupts used by the port

See Also: AH=81h"COMM-DRV",AH=83h"COMM-DRV"