Int 60 Fn 04  - Ftp Packet Driver - Basic Func - Send Packet               [N]

   AH = 04h
   DS:SI -> buffer
   CX = length

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

Note:  the buffer may be modified immediately upon return from this call

See Also: AH=0Bh