counta3d5_tb.v

verilog代码集锦.rar

module counta3d5_tb;
    reg rst,clk,up,dn;
    reg [7:0]din;
    wire[7:0]dout;
    wire par,carry,borrow;
    
    initial din=8'b11010011;
    always #1 clk=~clk;
    
    initial begin
    	clk=0;
    	rst=1;
    	up=0;dn=0;
    	#2 rst=0;
    	#2 rst=1;
    	#4 dn=1;
    	#200 dn=0;up=1;
    	$monitor("At time%t,dout=%b,par=%b,carry=%b,borrow=%b",$time,dout,par,carry,borrow);
    	#500$stop;
    end
    counta3d5 h1(.rst(rst), .clk(clk), .up(up), .dn(dn), .din(din), .dout(dout), .par(par), .carry(carry), .borrow(borrow));
  endmodule