ASIC/FPGA Design and Verification Out Source Services

VHDL IP Stack

ICMP frame with a valid CRC

1. The data of the frame is captured into fields as shown below:
   ------------------------frame data------------------------
   --MAC header
   constant mac_dest : std_logic_vector (47 downto 0) := x"00aa0062c609";
   constant mac_srce : std_logic_vector (47 downto 0) := x"00e0f7263fe9";--CISCO Router
   constant mac_type : std_logic_vector (15 downto 0) := x"0800";--IP ether type
   --IP ver 4 header
   constant ipheader : std_logic_vector (95 downto 0) := x"45000054aafb4000fc01fa30";
   constant ip_srcad : std_logic_vector (31 downto 0) := x"8b85e902"; --server.abdn.ac.uk
   constant ip_dstad : std_logic_vector (31 downto 0) := x"8b85d96e"; --client
   
   --ICMP header
   constant icmptype : std_logic_vector ( 7 downto 0) := x"00";
   constant icmpcode : std_logic_vector ( 7 downto 0) := x"00";
   constant icmpcsum : std_logic_vector (15 downto 0) := x"45da";--checksum
   constant icmpdata : std_logic_vector (479 downto 0) := x"1e600000335e3ab8000042ac08090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132330fcfc779";
   
   constant pkt_dlen : integer := 784; --length in bits
   constant pkt_nlen : integer := pkt_dlen/4;--length in nibbles
   
   ------------------------frame data------------------------
   
   


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