synth_intel_alm - synthesis for ALM-based Intel (Altera) FPGAs.

yosys> help synth_intel_alm

synth_intel_alm [options]

This command runs synthesis for ALM-based Intel FPGAs.

-top <module>

use the specified module as top module

-family <family>

target one of:
"cyclonev"    - Cyclone V (default)
"arriav"      - Arria V (non-GZ)
"cyclone10gx" - Cyclone 10GX

-vqm <file>

write the design to the specified Verilog Quartus Mapping File. Writing
of an output file is omitted if this parameter is not specified. Implies
-quartus.

-noflatten

do not flatten design before synthesis; useful for per-module area
statistics

-quartus

output a netlist using Quartus cells instead of MISTRAL_* cells

-dff

pass DFFs to ABC to perform sequential logic optimisations
(EXPERIMENTAL)

-run <from_label>:<to_label>

only run the commands between the labels (see below). an empty
from label is synonymous to 'begin', and empty to label is
synonymous to the end of the command list.

-nolutram

do not use LUT RAM cells in output netlist

-nobram

do not use block RAM cells in output netlist

-nodsp

do not map multipliers to MISTRAL_MUL cells

-noiopad

do not instantiate IO buffers

-noclkbuf

do not insert global clock buffers

The following commands are executed by this synthesis command:

    begin:
        read_verilog -specify -lib -D <family> +/intel_alm/common/alm_sim.v
        read_verilog -specify -lib -D <family> +/intel_alm/common/dff_sim.v
        read_verilog -specify -lib -D <family> +/intel_alm/common/dsp_sim.v
        read_verilog -specify -lib -D <family> +/intel_alm/common/mem_sim.v
        read_verilog -specify -lib -D <family> +/intel_alm/common/misc_sim.v
        read_verilog -specify -lib -D <family> -icells +/intel_alm/common/abc9_model.v
        read_verilog -lib +/intel/common/altpll_bb.v
        read_verilog -lib +/intel_alm/common/megafunction_bb.v
        hierarchy -check -top <top>

    coarse:
        proc
        flatten    (skip if -noflatten)
        tribuf -logic
        deminout
        opt_expr
        opt_clean
        check
        opt -nodffe -nosdff
        fsm
        opt
        wreduce
        peepopt
        opt_clean
        share
        techmap -map +/cmp2lut.v -D LUT_WIDTH=6
        opt_expr
        opt_clean
        techmap -map +/mul2dsp.v [...]    (unless -nodsp)
        alumacc
        iopadmap -bits -outpad MISTRAL_OB I:PAD -inpad MISTRAL_IB O:PAD -toutpad MISTRAL_IO OE:O:PAD -tinoutpad MISTRAL_IO OE:O:I:PAD A:top    (unless -noiopad)
        techmap -map +/intel_alm/common/arith_alm_map.v -map +/intel_alm/common/dsp_map.v
        opt
        memory -nomap
        opt_clean

    map_bram:    (skip if -nobram)
        memory_bram -rules +/intel_alm/common/bram_<bram_type>.txt
        techmap -map +/intel_alm/common/bram_<bram_type>_map.v

    map_lutram:    (skip if -nolutram)
        memory_bram -rules +/intel_alm/common/lutram_mlab.txt    (for Cyclone V / Cyclone 10GX)

    map_ffram:
        memory_map
        opt -full

    map_ffs:
        techmap
        dfflegalize -cell $_DFFE_PN0P_ 0 -cell $_SDFFCE_PP0P_ 0
        techmap -map +/intel_alm/common/dff_map.v
        opt -full -undriven -mux_undef
        clean -purge
        clkbufmap -buf MISTRAL_CLKBUF Q:A    (unless -noclkbuf)

    map_luts:
        techmap -map +/intel_alm/common/abc9_map.v
        abc9 [-dff] -maxlut 6 -W 600
        techmap -map +/intel_alm/common/abc9_unmap.v
        techmap -map +/intel_alm/common/alm_map.v
        opt -fast
        autoname
        clean

    check:
        hierarchy -check
        stat
        check
        blackbox =A:whitebox

    quartus:
        rename -hide w:*[* w:*]*
        setundef -zero
        hilomap -singleton -hicell __MISTRAL_VCC Q -locell __MISTRAL_GND Q
        techmap -D <family> -map +/intel_alm/common/quartus_rename.v

    vqm:
        write_verilog -attr2comment -defparam -nohex -decimal <file-name>