res_stage.v

viterbi译码器的一种fpga实现

`include "defs.h"

module res_stage(cmp,  prev00,  prev01,  prev10,  prev11,  prev20, 
 prev21,  prev30,  prev31,  prev40,  prev41,  prev50,  prev51,  prev60, 
 prev61,  prev70,  prev71,  
             nxt00,  nxt01,  nxt10,  nxt11,  nxt20,  nxt21,  nxt30,  nxt31, 
 nxt40,  nxt41,  nxt50,  nxt51,  nxt60,  nxt61,  nxt70,  nxt71);

input    [8-1:0]cmp;
input    nxt00,  nxt01,  nxt10,  nxt11,  nxt20,  nxt21,  nxt30,  nxt31, 
 nxt40,  nxt41,  nxt50,  nxt51,  nxt60,  nxt61,  nxt70,  nxt71;
output   prev00,  prev01,  prev10,  prev11,  prev20,  prev21,  prev30, 
 prev31,  prev40,  prev41,  prev50,  prev51,  prev60,  prev61,  prev70, 
 prev71;

res_ACS state0(cmp[0],  prev00,  prev01,  nxt00,  nxt01);
res_ACS state1(cmp[1],  prev10,  prev11,  nxt10,  nxt11);
res_ACS state2(cmp[2],  prev20,  prev21,  nxt20,  nxt21);
res_ACS state3(cmp[3],  prev30,  prev31,  nxt30,  nxt31);
res_ACS state4(cmp[4],  prev40,  prev41,  nxt40,  nxt41);
res_ACS state5(cmp[5],  prev50,  prev51,  nxt50,  nxt51);
res_ACS state6(cmp[6],  prev60,  prev61,  nxt60,  nxt61);
res_ACS state7(cmp[7],  prev70,  prev71,  nxt70,  nxt71);

endmodule