日志
$fsdbDumpvars
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$fsdbDumpvars
Description
To dump signal-value-change information to the FSDB file instead of the VCD
file. The syntax usage of this dumping command is exactly the same as for
$dumpvars.
When specified in the design:
$fsdbDumpvars;
$fsdbDumpvars([level] [, module | var]*);
$fsdbDumpvars("level=", level [, module | var]*);
$fsdbDumpvars("+no_functions" | ["level=", level] [,
"+IO_Only"] ["+Reg_Only"] [, module | var]*);
$fsdbDumpvars([level][,[["+struct"|"+mda+packedOnly"|
"+mda"|"+all"]|"+class"]][, module | var]*);
$fsdbDumpvars(level,"fullHierarchyName"[,dump-variables]);
When specified on the simulator command line:
Cadence:
call fsdbDumpvars
call fsdbDumpvars [level] [, module | var]*
call fsdbDumpvars "+no_functions" | ["level=" level]
["+IO_Only"] ["+Reg_Only"] [module | var]*
Modelsim:
fsdbDumpvars
fsdbDumpvars [level] [, module | var]*
Synopsys:
$fsdbDumpvars;
$fsdbDumpvars([level] [, module | var]*);
$fsdbDumpvars("level=", level [, module | var]*);
$fsdbDumpvars("+no_functions" | ["level=", level] [,
"+IO_Only"] ["+Reg_Only"] [, module | var]*);
$fsdbDumpvars([,[["+struct"|"+mda"|"+all"]|"+class"]]
[, module | var]*);
$fsdbDumpvars([level][,[["+struct"|"+mda+packedOnly"|
"+mda"|"+all"]|"+class"]][, module | var]*);
$fsdbDumpvars(level,"fullHierarchyName"[,dump-variables]);
Arguments
level
Specify how many levels of hierarchy to dump for the subsequent scopes. If
the subsequent arguments are signals, only these signals will be dumped. If
you want to specify this level argument as variable type, you have to specify
the first argument as string literal level= and the second argument as level
argument. The default level value is 0. Level values have the following
meanings:
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.
module | var
This definition gives either the module scope or signals that specify the
objects to dump.
"+IO_Only"
If you specify this option, only IO port signals will be dumped.
"+Reg_Only"
If you specify this option, only reg type signals will be dumped.
"+all"
Dump all signals including the memory, MDA, packed array, structure,
union and packed structure signals in all scopes specified in $fsdbDumpvars
or the entire design if no scope is specified. This option is valid only if you
use the Novas object file for FSDB dumping (vcsd72 or vcsd2005.06) that
supports Systemverilog and the DKI interface of VCS 7.2 or later. You
must also specify the +memcbk option when invoking VCS to compile your
design.
"+class"
Dump signals under class in all scopes specified in $fsdbDumpvars or the
entire design if no scope is specified. The signals under class will not be
dumped if the "+class" option is not specified (even if the "+all" option is
specified). This option is valid only if you use the Novas object file for
FSDB dumping (vcsd72 or vcsd2005.06) that supports SystemVerilog and
the DKI interface of VCS 7.2 or later.
"+mda"
Dump all memory and MDA signals in all scopes specified in
$fsdbDumpvars or the entire design if no scope is specified. This option is
valid only if you use the Novas object file for FSDB dumping (vcsd72 or
vcsd2005.06) that supports SystemVerilog and the DKI interface of VCS
7.2 or later. You must also specify the +memcbk option when invoking
VCS to compile your design. "+mda" is not needed if "+all" is specified.
"+mda+packedOnly"
Only dump the packed signals in the design (without array and memory
types). This option is valid only if you use the Novas object file for FSDB
dumping with ius5.5_vhpi, vcsd2005.06, vcsd2006.06_mhpi and later
versions. The following table summarizes if the packed or unpacked one-
dimensional/two-dimensional signals are dumped with or without the
+mda+packedOnly and +mda options.
"+struct"
Dump struct, MDA struct (i.e. st2[0:1]), MDA in struct (i.e. st3.r[1:0][2:0])
and packed MDA in all scopes specified in $fsdbDumpvars or the entire
design if no scope is specified. Unpacked array/MDA will not be dumped.
This option is valid only if you use the Novas object file for FSDB dumping
(vcsd72 or vcsd2005.06) that supports SystemVerilog and the DKI interface
of VCS 7.2 or later. "+struct" is not needed if "+all" is specified.
"fullHierarchyName"
This definition gives either the full hierarchy name of the module or signal
that specifies the objects to dump. This option is valid only if you use the
Novas object file for FSDB dumping (vcsd2005.06_mixed) that supports
Mixed-SystemVerilog/Vhdl designs and DKI interface of VCS2005.06 or
later. You also need to specify +memcbk option when you invoke VCS to
compile your design.
dump_variables
You can specify the optional argument dump_variables to 1 for dumping
the variables under process. The optional argument dump_variables is only
valid with the vcsd72_mixed object files for FSDB dumping.
Examples
NOTE: The following example uses the syntax for calling the FSDB dumping
command in the design. Refer to the syntax section for the correct
format for the simulator command line.
$fsdbDumpvars;
Dump all signals in the module that contains this statement and in all
module instances below this module.
$fsdbDumpvars(0, system);
Dump all signals in the system module and in all module instances below
system.
$fsdbDumpvars(1, "top.dut1.u1.clk");
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