User guide

24-54

SystemVerilog Testbench Constructs

This is the display within MyPacket

This is the display within YourPacket

This is a typical, albeit small, example of polymorphism at work.

Scope Resolution Operator ::

Scope resolution operator allows you to access user defined class

types as shown in the following example:

program p;

class A;

typedef enum {red,yellow,blue} color;

typedef byte MYBYTE;

endclass

A::MYBYTE b1 = 8'hff; //declaring b1 of class byte type

A::color c1; //declaring c1 of class enum type

initial begin

$display("%h",b1);

$display("%0d",c1.first);

$display("%0d",c1.next);

end

endprogram

The Output of the program is: