Int 63 Fn 1A  - Bw-tcp - Tcpip.sys - Read From The Network                 [N]

   AH = 1Ah
   CX = maximum number of bytes to read
   ES:BP -> ???
   ???

Return: CX = number of bytes actually read
   ???

See Also: AH=12h,AH=14h,AH=19h,INT 61/AH=1Bh"PC/TCP"