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ram_monitor.sv
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ram_monitor.sv
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`include "defines.sv"
class ram_monitor;
//PROPERTIES
//Ram transaction class handle
ram_transaction mon_trans;
//Mailbox for monitor to scoreboard connection
mailbox #(ram_transaction) mbx_ms;
//Virtual interface with driver modport and it's instance
virtual ram_if.MON vif;
//FUNCTIONAL COVERAGE for outputs
covergroup mon_cg;
DATA_OUT: coverpoint mon_trans.data_out {bins dout[] ={[0:255]};}
endgroup
//METHODS
//Explicitly overriding the constructor to make mailbox connection from monitor
//to scoreboard, to make mailbox connection from monitor to scoreboard and
//to connect the virtual interface from monitor to enviornment
function new( virtual ram_if.MON vif,
mailbox #(ram_transaction) mbx_ms);
this.vif=vif;
this.mbx_ms=mbx_ms;
//Creating the object for covergroup
mon_cg=new();
endfunction
//Task to collect the output from the interface
task start();
repeat(4) @(vif.mon_cb);
for(int i=0;i<`no_of_trans;i++)
begin
mon_trans=new();
repeat(1) @(vif.mon_cb)
begin
mon_trans.data_out=vif.mon_cb.data_out;
mon_trans.address=vif.mon_cb.address;
end
$display("MONITOR PASSING THE DATA TO SCOREBOARD data_out=%d",mon_trans.data_out,$time);
//Putting the collected ouputs to mailbox
mbx_ms.put(mon_trans);
//Sampling the covergroup
mon_cg.sample();
$display("OUTPUT FUNCTIONAL COVERAGE = %0d", mon_cg.get_coverage());
repeat(1) @(vif.mon_cb);
end
endtask
endclass