diff --git a/README b/README index 05628a8e..ba90e72a 100644 --- a/README +++ b/README @@ -109,6 +109,10 @@ writing the design to the console in yosys's internal format: yosys> write_ilang +elaborate design hierarchy: + + yosys> hierarchy + convert processes ("always" blocks) to netlist elements and perform some simple optimizations: @@ -132,13 +136,14 @@ write design netlist to a new verilog file: a similar synthesis can be performed using yosys command line options only: - $ ./yosys -o synth.v -p proc -p opt -p techmap -p opt tests/simple/fiedler-cooley.v + $ ./yosys -o synth.v -p hierarchy -p proc -p opt \ + -p techmap -p opt tests/simple/fiedler-cooley.v or using a simple synthesis script: $ cat synth.ys read_verilog tests/simple/fiedler-cooley.v - proc; opt; techmap; opt + hierarchy; proc; opt; techmap; opt write_verilog synth.v $ ./yosys synth.ys @@ -147,7 +152,7 @@ It is also possible to only have the synthesis commands but not the read/write commands in the synthesis script: $ cat synth.ys - proc; opt; techmap; opt + hierarchy; proc; opt; techmap; opt $ ./yosys -o synth.v tests/simple/fiedler-cooley.v synth.ys