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Tutorials

Specman E
Interview Questions

SCOREBOARD

When the packet comes from reciever, the scoreboard gets the expected packet from drv2sb channel and compare them.

CODE:scoreboard.sv
`ifndef SB_CLASS
`define SB_CLASS

class scoreboard extends avm_verification_component;

packet exp_pkt,drv_pkt;
packet exp_que[$];
packet rcv_pkt;

integer no_drv_pkt;
integer no_rcv_pkt;
string msg;
tlm_blocking_get_if#(packet) drv_port;
tlm_blocking_get_if#(packet) rcv_port;

function new( );
super.new("Scoreboard");

no_drv_pkt = 0;
no_rcv_pkt = 0;

avm_report_message("sb","Scoreboard created");
endfunction

task run();

    avm_report_message("sb"," STARTED main task ");
    fork
    forever
    begin
    drv_port.get(drv_pkt);
    this.no_drv_pkt++;
    $swrite(msg,"Recieved packet no from driver %d size of queue%d\n",no_rcv_pkt,exp_que.size());
        avm_report_message("sb",msg);
    exp_que.push_front(drv_pkt);


    end
    join_none
forever
begin
rcv_port.get(rcv_pkt);
this.no_rcv_pkt++;
exp_pkt = exp_que.pop_back();

$swrite(msg,"Recieved packet no %d\n",no_rcv_pkt);
avm_report_message("sb",msg);
if(rcv_pkt.comp(rcv_pkt,exp_pkt))
avm_report_message("sb"," Packet matched ");
else
avm_report_error("sb"," Packet mismatch ");

end
endtask

endclass

`endif

Index
Avm Introduction
Dut Specification
Rtl
Top
Interface
Environment
Packet
Packet Generator
Configuration
Driver
Reciever
Scoreboard

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