#学习记录#

前言：本文以一个简单的计数器来说明vcs和verdi的使用

1 代码文件

1.1 计数器代码

//Engineer：Mr-pn-junction
module counter(input    clk,input    rst,output reg [5:0] count);
always@(posedge clk or negedge rst)beginif(!rst)count <=0;elsecount <= count +1;end
endmodule

1.2 testbench

//Engineer：Mr-pn-junction
module tb_counter();reg clk;
reg rst;
wire [5:0] count;
counter u_counter(.clk(clk),.rst(rst),.count(count));
always #5 clk= ~clk;
initial beginclk <=0;rst<=0;#20;rst <= 1;#50;if(count !=5)$display("Failure1:the counter should be 5 but it is %d",count);else$display("You gotta the right result");$finish;end`ifdef FSDB
initial begin$fsdbDumpfile("tb_counter.fsdb");$fsdbDumpvars;
end
`endif
endmodule

1.3 Makefile

#Makefile 
run:vcs -R -full64 +v2k -fsdb +define+FSDB -sverilog counter.v tb_counter.v -timescale=1ns/1ns -l run.logverdi:verdi -sv -f filelist -ssf tb_counter.fsdbclean:rm -rf verdilog *.log *.fsdb csrc ucli.key simv* *.conf *.rc

1.4 filelist

./counter.v
./tb_counter.v

2 vcs编译

命令行：make run。如下所示：

3 verdi查看波形

命令行：make verdi。点击信号，然后快捷键Ctrl+w将信号加入波形中。如下所示：