how to Simulate Nios II with custom component?

Very good ,this step is completed,Thanks ,

Now im tiring to simulate my custom design(without NIOS) using the testbenches lik what it is done in "Altera JTAG-to-Avalon-MM Tutorial".

my custom component is like this (slave):

https://www.alteraforum.com/forum/attachment.php?attachmentid=10031

last time I used this method to talk to my hardware from NIOS:

--- Quote Start ---

# include<stdio.h>

# include<unistd.h>

# include "system.h"

# include "alt_types.h"

# include <io.h>

# ifndef loadstart

# define loadstart 0x0

# endif

# ifndef loadnxt

# define loadnxt 0x1

# endif

# ifndef loadwe

# define loadwe 0x2

# endif

# ifndef loadeaddr

# define loadeaddr 0x3

# endif

# ifndef loadAi0

# define loadAi0 0x4

# endif

# ifndef loadAi1

# define loadAi1 0x5

# endif

# ifndef loadAi2

# define loadAi2 0x6

# endif

# ifndef loadAi3

# define loadAi3 0x7

# endif

# ifndef loadBi0

# define loadBi0 0x8

# endif

# ifndef loadBi1

# define loadBi1 0x9

# endif

# ifndef loadBi2

# define loadBi2 0xA

# endif

# ifndef loadBi3

# define loadBi3 0xB

# endif

# ifndef readsum

# define readsum 0xC

# endif

# ifndef readpdone

# define readpdone 0xD

# endif

# ifndef readdone

# define readdone 0xE

# endif

void matrixmul(int A[16][16],int B[16][16],int C[16][16])

{ int k=0;

IOWR(MATRIXMUL_0_BASE,loadwe,1);

int i,l,m;

for(i=0; i<16; i++)

{

int j=0;

while(j<16)

{

IOWR(MATRIXMUL_0_BASE,loadeaddr,k);

IOWR(MATRIXMUL_0_BASE, loadAi0, A[j]);

iowr(matrixmul_0_base, loadai1, a[j+1]);

IOWR(MATRIXMUL_0_BASE, loadAi2, A[j+2]);

iowr(matrixmul_0_base, loadai3, a[j+3]);;

IOWR(MATRIXMUL_0_BASE, loadBi0, B[j]);

iowr(matrixmul_0_base, loadbi1, b[j+1]);

IOWR(MATRIXMUL_0_BASE, loadBi2, B[j+2]);

iowr(matrixmul_0_base, loadbi3, b[j+3]);

...

...

--- Quote End ---

But Now I dont know how to communicate with my custom hardware in testbench using "avalon_write" or "avalon_read" since I need to access this signals directly:

input [2:0] address;

input [31:0] writedata;

Now I manipulate avalon_write function and used index of "set_command_data" as below:

--- Quote Start ---

$display("");

test_number = test_number + 1;

$display("-----------------------------------------------");

$display("%1d: Test the GCD.", test_number);

$display("-----------------------------------------------");

// --------------------------------------------------------

//

$display(" * Write 25 to the GCD");

wrdata = 2;

wrindex=1;

avalon_GCD_write('h20, 2,1);

avalon_GCD_write('h20, 25,2);

avalon_GCD_write('h20, 5,3);

avalon_GCD_write('h20, 1,1);

//avalon_GCD_write('h20, wrdata,wrindex);

//avalon_GCD_write('h20, wrdata,wrindex);

for (int i = 0; i < 32; i++)

begin

avalon_read('h20+i, rddata);

$display(" - GCD register value = %.2Xh", rddata);

end

$display("");

---------------------------------------------------------------

task avalon_GCD_write (

// ------------------------------------------------------------

input [`AV_ADDRESS_W-1:0] addr,

input [`AV_DATA_W-1:0] data,

input int index1

);

begin

// Construct the BFM request

`BFM.set_command_request(REQ_WRITE);//fix

`BFM.set_command_idle(0, 0); // idle cycle at the end of each transaction,index?

`BFM.set_command_init_latency(0); //fix Sets the number of cycles to postpone the start of a command.

`BFM.set_command_address(addr); //fix

`BFM.set_command_byte_enable('1,0); // Sets the transaction byte enable,index??

`BFM.set_command_data(data, index1);

// Queue the command

`BFM.push_command();

// Wait until the transaction has completed

while (`BFM.get_response_queue_size() != 1)

@(posedge clk);

// Dequeue the response and discard

`BFM.pop_response();

end

endtask

--- Quote End ---

but i got this error:2330000: ERROR: qsys_system_bfm_master_tb.dut.bfm_master.__check_transaction_index: Cycle index 1 exceeds MAX_BURST_SIZE-1 0

Totally I dont know what am i doing! but I couldn't find any example in "Introduction to Avalon Verification IP Suite" to how to talk to my custom component. especially I need to access "address" in my own custom component.

can you show me a good tutorial or tell me what to do?

thanks