Encounter problems when I using Avalon MM templates for read

Altera_Forum · ‎02-17-2014

Hi

I refer to Avalon MM templates to achieve master read, but I only read the first 64 document (s)

As long as I read the document beyond the data output 64 is the last document 64

For example :

I want to output from 0 to 127, but the results will only be 66 to 127

This is because I have not set some signal right ? or my code have something wrong?

thx for all

please help me, I'm going crazy for begug!

//*******************************************************************************//
//
//	
//
//*******************************************************************************
`timescale 1ns/1ns
module master (
			clk,
				reset,
// DDR2 master port
	master_address,
	master_byteenable,
master_waitrequest,
			go,
/////////////////write///////////////////////
		master_write,
	master_writedata,
	source_data,
 write_addr,
   write_en,
///////////////////////////////////////////////////////////////////
	master_readdata,
		master_readdatavalid,
		to_addr_readdata,
     read_en,
	 read_addr,
		master_read,
		index,
//      for_read_en
		fifo_ren,
		fifo_wen,
		fifo_clk,
		for_fifo,
		addr_ck
		);
input				clk;
input				reset;
input  index;
input addr_ck;
output  fifo_wen;
output  reg fifo_ren;
output fifo_clk;
// DDR2 master port
input for_fifo;
output	reg		master_address;
output			master_byteenable;
input				master_waitrequest;
output 				go;
input               write_en;
/////////////////write///////////////////////
output				master_write;
output			master_writedata,to_addr_readdata;
input			source_data;
input 		  write_addr;
///////////////////////////////////////////////////////////////////
input			master_readdata;
input		master_readdatavalid;
output	reg	master_read;
input               read_en;	
input  read_addr;	
//////////////////////////////////////////////////////////
reg  to_addr_readdata;
wire read_go,write_go;
 assign master_byteenable = 4'b1111;  
 
assign master_writedata = source_data;
 assign go = master_waitrequest;
assign fifo_clk_1 = (  clk & (!master_waitrequest) & for_fifo);
assign fifo_clk = (fifo_clk_1  & master_read);
	
assign fifo_wen = (read_en && (!master_waitrequest));
   
always @(posedge clk or negedge reset)
 
	 begin
		if (!reset)
		begin
          to_addr_readdata <=# 1 0;
		  master_address <=# 1 0;
		  master_read <=# 1 0;
		end	 
	 
     else if (addr_ck == 1)
		begin
          to_addr_readdata <=# 1 master_readdata;
		  master_address <=# 1 read_addr;
		  master_read <=# 1 read_en;
		end
    end
   
		
endmodule