[Tool] Verdi 用法（dump waveform）

原文地址：https://blog.csdn.net/lbt_dvshare/article/details/86604379

1.1 Basic Usage(add in top module)

• Specifying fsdb file : $fsdbDumpfile(file_name,file_size(MB))
• Dumping fsdb information : $fsdbDumpvars(depth, instance, options)
• Depth :
  • 0 : all signals in all scopes.
  • 1 : all signals in current scope.
  • 2 : all signals in the current scope and all scopes one level below.
  • n : all signals in the current scope and all scopes n-1 levels below.
• Options (Optional) :

Options	Description
+all	Dump all signals including memory, MDA, packed array, structure, union, power-related, and packed structure
+mda	Dump all memory and MDA signals
+strength	Enable strength dumping
+struct	Dump all structs (default on)
+power	Dump power-related signals (default on)
others	check on verdi -doc //$VERDI_HOME/doc/linking_dumping.pdf

• vcs compile option : -debug_pp is needed
  • Recommend : VCS and Verdi should align at least same version

1.  
   $fsdbDumpfile("test.fsdb",50)
2.  
   $fsdbDumpvars(0, chip_top,"+power","+struct", "+mda");

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1.2 Q: How to split fsdb file?

• Split by FSDB Size
  • $fsdbAutoSwitchDumpfile(File_size(MB), File_name, number_of_file)
  • Recommend File Size: RTL not over 2G, netlist not over 5G:

1.  
   initial begin
2.  
   $fsdbDumpvars(0, dut);
3.  
   $fsdbAutoSwitchDumpfile(2000, XXX, 20);
4.  
   en

• Split by Time Period

1.  
   integer i;
2.  
   initial begin
3.  
   $fsdbDumpvars(0, dut);
4.  
   i=0;
5.  
   forever begin
6.  
   $fsdbSwitchDumpfile($sformatf("XXX_%0d", i));
7.  
   #time period;
8.  
   i = i+1;
9.  
   end
10.  
    end

---

1.3 Q: How to dump a certain time interval only?

• Use $fsdbDumpon, $fsdbDumpoff to specify time interval

1.  
   initial begin
2.  
   $fsdbDumpvars(0, dut, "+fsdbfile+interval.fsdb");
3.  
   #40 $fsdbDumpoff;
4.  
   #40 $fsdbDumpon;
5.  
   #40 $fsdbDumpoff;
6.  
   #40 $finish;
7.  
   end

---

1.4 Q: How to not dump a certain instance?

• Use $fsdbSupress(instance) to specify certain instance
• NOTE : $fsdbSuppress must be specified before $fsdbDumpvars

1.  
   initial begin
2.  
   $fsdbSuppress(dut.inst_a, dut.inst_b);
3.  
   $fsdbDumpvars(0, dut);
4.  
   end

---

1.5 Q: How to dump assertion?

• Use $fsdbDumpSVA(depth, instance)
• vcs compile option : -sverilog -debug_pp is needed
• NOTE: After Verdi 1703SP1-1, please add runtime option "+fsdb+sva_success"

1.  
   initial begin
2.  
   $fsdbDumpSVA(0, dut);
3.  
   end

---

1.6 Q: How to dump memory arrays?

• Use $fsdbDumpMDA(depth, instance)
• vcs compile option : -debug_pp, +memcbk  is needed

1.  
   initial begin
2.  
   $fsdbDumpMDA(1, dut.i_pram);
3.  
   end

---

1.7 Q: How to dump lib cells signal to fsdb?

• vcs compile option : -debug_acc -debug_region=cell+lib is needed

Example: vcs -debug_acc -debug_region=cell+lib <other options>

---

1.8 Q: How to dump glitch information?

• By simulation command
  • Before Verdi/1509, simv +fsdb+sequential +fsdb+glitch=0 +fsdb+region
  • After Verdi/1509, simv +fsdb+delta

%> simv +fsdb+sequential +fsdb+glitch=0 +fsdb+region

• By Environment variable

1.  
   %> setenv NOVAS_FSDB_ENV_DUMP_SEQ_NUM 1
2.  
   %> setenv NOVAS_FSDB_ENV_MAX_GLITCH_NUM 0
3.  
   %> setenv FSDB_REGION
4.  
   then re-run simulation

---

1.9 Q: How to dump force information?

• By simulation command
  • simv +fsdb+force

%> simv +fsdb+force

• By Environment variable

1.  
   %> setenv FSDB_FORCE
2.  
   then re-run simulation