ms_res_acs1_1.v

viterbi译码器的一种fpga实现

//Actually the node is a CSA and not an ACS.
`include "defs.h"

module MS_res_ACS1_1(compare, traceback_path0, traceback_path1, 
			in_path0, in_path1, bit_line);

input   compare;
input   in_path0, in_path1;
output  traceback_path0, traceback_path1;
output  bit_line;

//traceback
wire in_path = in_path0 | in_path1;
wire traceback_path0 = in_path & (compare == 1);
wire traceback_path1 = in_path & (compare == 0);
	
//wire bit_line = in_path0 ? 0 : (in_path1 ? 1 : 1'bz);
wire bit_line = in_path ? (in_path0 ? 1 : 0) : 1'bz;

endmodule