Int 7F Fn 03  - G8bpq V4.00+ - Host Mode - Receive Frame                   [N]

   AH = 03h
   AL = stream number (01h-40h)
   ES:DI -> buffer for frame (must be large enough for a full frame; 350
         bytes is usually sufficient)

Return: BX = number of pending frames (0000h if returned frame was last avail)
   CX = length of received frame

See Also: AH=02h"G8BPQ",AH=07h"G8BPQ",AH=0Bh"G8BPQ"