-- Hamming Decoder

-- This Hamming decoder accepts an 8-bit Hamming code (produced by the encoder above) and performs single error correction and double error detection.

-- download from: www.pld.com.cn & www.fpga.com.cn





LIBRARY ieee

USE ieee.std_logic_1164.ALL



ENTITY hamdec IS

PORT(hamin : IN BIT_VECTOR(0 TO 7) --d0 d1 d2 d3 p0 p1 p2 p4

dataout : OUT BIT_VECTOR(0 TO 3) --d0 d1 d2 d3

sec, ded, ne : OUT BIT) --diagnostic outputs

END hamdec



ARCHITECTURE ver1 OF hamdec IS



BEGIN

--- Hamming Decoder

-- This Hamming decoder accepts an 8-bit Hamming code (produced by the encoder above) and performs single error correction and double error detection.

-- download from: www.pld.com.cn & www.fpga.com.cn





LIBRARY ieee

USE ieee.std_logic_1164.ALL



ENTITY hamdec IS

　 PORT(hamin : IN BIT_VECTOR(0 TO 7)　--d0 d1 d2 d3 p0 p1 p2 p4

　　　　dataout : OUT BIT_VECTOR(0 TO 3) --d0 d1 d2 d3

　　　　sec, ded, ne : OUT BIT)　--diagnostic outputs

END hamdec



ARCHITECTURE ver1 OF hamdec IS



BEGIN