nextpnr/xc7/blinky.ys

read_verilog blinky.v

#synth_xilinx -top blinky

#begin:
    read_verilog -lib +/xilinx/cells_sim.v
    read_verilog -lib +/xilinx/cells_xtra.v
#    read_verilog -lib +/xilinx/brams_bb.v
#    read_verilog -lib +/xilinx/drams_bb.v
    hierarchy -check -top blinky

#flatten:     (only if -flatten)
    proc
    flatten

#coarse:
    synth -run coarse

#bram:
#    memory_bram -rules +/xilinx/brams.txt
#    techmap -map +/xilinx/brams_map.v
#
#dram:
#    memory_bram -rules +/xilinx/drams.txt
#    techmap -map +/xilinx/drams_map.v

fine:
    opt -fast -full
    memory_map
    dffsr2dff
#    dff2dffe
    opt -full
    techmap -map +/techmap.v #-map +/xilinx/arith_map.v
    opt -fast

map_luts:
    abc -luts 2:2,3,6:5 #,10,20 [-dff]
    clean

map_cells:
    techmap -map +/xilinx/cells_map.v
    dffinit -ff FDRE Q INIT -ff FDCE Q INIT -ff FDPE Q INIT
    clean

check:
    hierarchy -check
    stat
    check -noinit

#edif:     (only if -edif)
#    write_edif <file-name>

write_json blinky.json