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-rw-r--r--kernel/show.cc17
1 files changed, 16 insertions, 1 deletions
diff --git a/kernel/show.cc b/kernel/show.cc
index d7da62cd..eef4c44f 100644
--- a/kernel/show.cc
+++ b/kernel/show.cc
@@ -298,7 +298,22 @@ struct ShowWorker
};
struct ShowPass : public Pass {
- ShowPass() : Pass("show") { }
+ ShowPass() : Pass("show", "generate schematics using graphviz") { }
+ virtual void help()
+ {
+ // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
+ log("\n");
+ log(" show [-viewer <command>] [selection]\n");
+ log("\n");
+ log("Create a graphviz DOT file for the selected part of the design and compile it\n");
+ log("to a postscript file.\n");
+ log("\n");
+ log(" -viewer <command>\n");
+ log(" Also run the specified command with the postscript file as parameter.\n");
+ log("\n");
+ log("The generated output files are `yosys-show.dot' and `yosys-show.ps'.\n");
+ log("\n");
+ }
virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
{
log_header("Generating Graphviz representation of design.\n");