Int 14 Fn 8003  - Comm-drv V14.0 - Read Port Metrics - Get I/o Buffer Siz  [S]

   AX = 8003h
   DX = port number

Return: AX = number of characters in input buffer
   BX = input buffer size
   CX = number of characters in output buffer
   DX = output buffer size

See Also: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8002h"COMM-DRV"