[Tool] Verdi 用法（dump waveform）

1.1 Basic Usage(add in top module)

• $fsdbDumpfile(file_name,file_size(MB))
• $fsdbDumpvars(depth, instance, options)

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

• -debug_pp is needed

 $fsdbDumpfile("test.fsdb",50) $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:

 initial begin     $fsdbDumpvars(0, dut);     $fsdbAutoSwitchDumpfile(2000, XXX, 20); en

• Split by Time Period

 integer i; initial begin     $fsdbDumpvars(0, dut);     i=0;     forever begin         $fsdbSwitchDumpfile($sformatf("XXX_%0d", i));         #time period;         i = i+1;     end end

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

• Use $fsdbDumpon, $fsdbDumpoff to specify time interval

 initial begin     $fsdbDumpvars(0, dut, "+fsdbfile+interval.fsdb");     #40 $fsdbDumpoff;     #40 $fsdbDumpon;     #40 $fsdbDumpoff;     #40 $finish; end

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1.4 Q: How to not dump a certain instance?

• Use $fsdbSupress(instance) to specify certain instance

 initial begin     $fsdbSuppress(dut.inst_a, dut.inst_b);     $fsdbDumpvars(0, dut); end

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

 initial begin     $fsdbDumpSVA(0, dut); end

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• Use $fsdbDumpMDA(depth, instance)
• -debug_pp, +memcbk

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

• -debug_acc -debug_region=cell+lib is needed

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

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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

 %> setenv NOVAS_FSDB_ENV_DUMP_SEQ_NUM 1 %> setenv NOVAS_FSDB_ENV_MAX_GLITCH_NUM 0 %> setenv FSDB_REGION then re-run simulation 

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1.9 Q: How to dump force information?

• By simulation command
  • simv +fsdb+force

 %> simv +fsdb+force 

• By Environment variable

 %> setenv FSDB_FORCE then re-run simulation

文章来源: https://blog.csdn.net/lbt_dvshare/article/details/86604379