Subversion Repositories s1_core

Simply RISC S1 Core - Tracan (Trace Analyzer)

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This small tool has been written to convert the waveforms of the

original OpenSPARC T1 simulation environment into a format similar

to the one used in the "sim.log" file generated by the S1 simulations.

To have it working you have to:

- have a working OpenSPARC T1 simulation environment;

- modify the top-level testbench cmpt_top.v to add the

  following lines:

    initial begin

      $dumpfile("trace.vcd");

      $dumpvars(2);

    end

- run the T1 simulations you want (give to the sims script

  the argument to not delete the results);

- open the resulting trace.vcd file with a text editor and

  look for lines similar to these ones:

    $var wire 124 " spc_pcx_data_pa [123:0] $end

    $var wire 145 $ cpx_spc_data_cx2 [144:0] $end

- if the chars after the numbers are different from the double

  quote and the dollar sign shown above, then you have to change

  the string used by the egrep command into the 'tracan' script;

  for instance if the two chars are 'A' and 'B' the line will

  become:

    egrep ' A$| B$' $1 | egrep -v x | ./tracan.bin

- then you can finally run the program: if the binary file

  tracan.bin does not exists it will be compiled with GCC;

- if everything goes right you will be able to use the command:

    tracan.sh PATH_TO_YOUR_TRACE_VCD_FILE

  and you will get the logfile on the console; a typical usage

  would be:

    tracan.sh trace.vcd > sim.log

- if you want to improve the script to automatically extract the

  ASCII symbol used in the VCD file for outgoing and incoming

  packets, please modify the tool and we'll be happy to mention

  your name into this file!

- Enjoy!

  The development team at Simply RISC LLP