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[/] [ahb2wishbone/] [branches/] [toomuch/] [svtb/] [avm_svtb/] [ahb_wb_stim_gen.svh] - Rev 5
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//*****************************************************************************************************************
// Copyright (c) 2007 TooMuch Semiconductor Solutions Pvt Ltd.
//
//File name : ahb_wb_stim_gen.svh
//Designer : Sanjay kumar
//Date : 3rd Aug'2007
//Description : ahb_wb_stim_gen:Class to generata write and read packet with wait state by master.
//Revision : 1.0
//*****************************************************************************************************************
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
import avm_pkg::*;
import global::*;
class ahb_wb_stim_gen extends avm_named_component;
// communication port
avm_blocking_put_port#( ahb_req_pkt) initiator_port;
tlm_fifo #(ahb_req_pkt) fifo;
function new(string name ,avm_named_component parent);
super.new(name,parent);
initiator_port=new("initiatot_port",this);
fifo =new("fifo",this);
endfunction
task stimulus(input int count= 45);
ahb_req_pkt p;
//(write operation) write data and addr. to fifo
for(int i=0; i<count ;i++)
begin
if(i>15 && i<21)// busy mode
begin
p.mode='b01;
p.wr='b1;
end
else if(i>26 && i<31) // idle mode
begin
p.mode='b00;
p.wr='b1;
end
else if(i>30 && i<36) // Sequential mode
begin
p.mode='b11;
p.wr='b1;
end
else // Non sequential mode
begin
p.mode='b10;
p.adr=$random;
p.dat=$random;
p.wr='b1;
end
write_to_pipe(p);
end
//(read operation) write address to fifo for read
for(int i=0; i<count ;i++)
begin
if(i>10 && i<16) // busy mode
begin
p.mode='b01;
p.wr='b0;
end
else if(i>20 && i<26) // idle mode
begin
p.mode='b00;
p.wr='b0;
end
else if(i>25 && i<31) // Sequential mode
begin
p.mode='b11;
p.wr='b0;
end
else //Non Sequential mode
begin
p.mode='b10;
p.adr=$random;
p.wr='b0;
end
write_to_pipe(p);
end
// write operation
for(int i=0; i<(count-30) ;i++)
begin
if(i>=0 && i<(count-30))
begin
p.mode='b10;
p.adr=$random;
p.dat=$random;
p.wr='b1;
end
write_to_pipe(p);
end
endtask
// task to push transaction in the fifo
task write_to_pipe(ahb_req_pkt p);
initiator_port.put(p);
//avm_report_message("Stim_gen: Packet pushed into fifo",global::convert2string(p));
endtask
endclass
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