Int 60 Fn 02  - Ftp Packet Driver - Basic Func - Access Type               [N]

   AH = 02h
   AL = interface class
   BX = interface type
   DL = interface number
   DS:SI -> type
   CX = length of type (0000h for all packets)
   ES:DI -> receiver function (see #2979)

Return: CF set on error
       DH = error code (see #2976)
   CF clear if successful
       AX = handle

See Also: AH=03h"FTP"

(Table 2979)
Values packet driver receiver is called with when a packet is received:
   AX = subfunction
       00h get packet buffer
       CX = buffer length
       DX = lookahead length (v1.10+)
       DS:SI -> lookahead buffer if DX nonzero (v1.10+)
       DI = error flags (class dependent) (v1.10+)

       Return: ES:DI -> packet buffer
               0000h:0000h means throw away packet
           CX = size of buffer (v1.10+), may be smaller than
                 incoming data
       01h copy completed
       DS:SI -> buffer
       CX = bytes actually copied (v1.10+)
   BX = handle