{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
- log(" synth_gowin [options]\n");
+ log(" synth_gowin [options]\n");
log("\n");
log("This command runs synthesis for Gowin FPGAs. This work is experimental.\n");
log("\n");
- log(" -top <module>\n");
- log(" use the specified module as top module (default='top')\n");
+ log(" -top <module>\n");
+ log(" use the specified module as top module (default='top')\n");
log("\n");
- log(" -vout <file>\n");
- log(" write the design to the specified Verilog netlist file. writing of an\n");
- log(" output file is omitted if this parameter is not specified.\n");
+ log(" -vout <file>\n");
+ log(" write the design to the specified Verilog netlist file. writing of an\n");
+ log(" output file is omitted if this parameter is not specified.\n");
log("\n");
- log(" -run <from_label>:<to_label>\n");
- log(" only run the commands between the labels (see below). an empty\n");
- log(" from label is synonymous to 'begin', and empty to label is\n");
- log(" synonymous to the end of the command list.\n");
+ log(" -run <from_label>:<to_label>\n");
+ log(" only run the commands between the labels (see below). an empty\n");
+ log(" from label is synonymous to 'begin', and empty to label is\n");
+ log(" synonymous to the end of the command list.\n");
log("\n");
- log(" -nodffe\n");
- log(" do not use flipflops with CE in output netlist\n");
+ log(" -nodffe\n");
+ log(" do not use flipflops with CE in output netlist\n");
log("\n");
- log(" -nobram\n");
- log(" do not use BRAM cells in output netlist\n");
+ log(" -nobram\n");
+ log(" do not use BRAM cells in output netlist\n");
log("\n");
- log(" -nodram\n");
- log(" do not use distributed RAM cells in output netlist\n");
+ log(" -nodram\n");
+ log(" do not use distributed RAM cells in output netlist\n");
log("\n");
- log(" -noflatten\n");
- log(" do not flatten design before synthesis\n");
+ log(" -noflatten\n");
+ log(" do not flatten design before synthesis\n");
log("\n");
- log(" -retime\n");
- log(" run 'abc' with -dff option\n");
+ log(" -retime\n");
+ log(" run 'abc' with -dff option\n");
log("\n");
- log(" -nowidelut\n");
- log(" do not use muxes to implement LUTs larger than LUT4s\n");
+ log(" -nowidelut\n");
+ log(" do not use muxes to implement LUTs larger than LUT4s\n");
log("\n");
- log(" -abc9\n");
- log(" use new ABC9 flow (EXPERIMENTAL)\n");
+ log(" -abc9\n");
+ log(" use new ABC9 flow (EXPERIMENTAL)\n");
log("\n");
log("\n");
log("The following commands are executed by this synthesis command:\n");
run("setundef -undriven -params -zero");
run("hilomap -singleton -hicell VCC V -locell GND G");
run("iopadmap -bits -inpad IBUF O:I -outpad OBUF I:O", "(unless -noiopads)");
- run("dffinit -ff DFF Q INIT");
+ run("dffinit -ff DFF Q INIT");
run("clean");
}