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Fix tracing issues and commentary

This commit is contained in:
Wilson Snyder 2010-01-25 09:48:35 -05:00
parent 4b38acd540
commit bf435cae7c
1 changed files with 4 additions and 4 deletions
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@ -660,7 +660,7 @@ designs with only one top.
Adds waveform tracing code to the model. Verilator will generate
additional {prefix}__Trace*.cpp files that will need to be compiled. In
addition verilated_vcd_sc.cpp (for SystemC traces) or verilated_vcd_c.c
addition verilated_vcd_sc.cpp (for SystemC traces) or verilated_vcd_c.cpp
(for both) must be compiled and linked in. If using the Verilator
generated Makefiles, these will be added as source targets for you. If
you're not using the Verilator makefiles, you will need to add these to
@ -2530,7 +2530,7 @@ maximum typically needed.
See the next question for tracing in SystemC mode.
Add the --trace switch to Verilator, and in your top level C code, call
Verilated::traceEverOn(true). Then create a VerilatedVcdCFile object, and
Verilated::traceEverOn(true). Then create a VerilatedVcdC object, and
in your main loop call "trace_object->dump(time)" every time step, and
finally call "trace_object->close()". For an example, see below and the
test_c/sim_main.cpp file of the distribution.
@ -2542,7 +2542,7 @@ Note you can also call ->trace on multiple Verilated objects with the same
trace file if you want all data to land in the same output file.
Note also older versions of Verilator used the SystemPerl package and
SpTraceVcdCFile class. This still works, but is depreciated as it requires
SpTraceVcdC class. This still works, but is depreciated as it requires
strong coupling between the Verilator and SystemPerl versions.
#include "verilated_vcd_c.h"
@ -2550,7 +2550,7 @@ strong coupling between the Verilator and SystemPerl versions.
int main(int argc, char **argv, char **env) {
...
Verilated::traceEverOn(true);
VerilatedVcdCFile* tfp = new VerilatedVcdCFile;
VerilatedVcdC* tfp = new VerilatedVcdC;
topp->trace (tfp, 99);
tfp->open ("obj_dir/t_trace_ena_cc/simx.vcd");
...