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synth_intel_alm: alternative synthesis for Intel FPGAs By operating at a layer of abstraction over the rather clumsy Intel primitives, we can avoid special hacks like `dffinit -highlow` in favour of simple techmapping. This also makes the primitives much easier to manipulate, and more descriptive (no more cyclonev_lcell_comb to mean anything from a LUT2 to a LUT6).
2019-11-19 04:19:00 -06:00
read_verilog ../common/mux.v
design -save read
hierarchy -top mux2
proc
equiv_opt -assert -map +/intel_alm/common/alm_sim.v synth_intel_alm -family cyclonev # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mux2 # Constrain all select calls below inside the top module
select -assert-count 1 t:MISTRAL_ALUT3
select -assert-none t:MISTRAL_ALUT3 %% t:* %D
design -load read
hierarchy -top mux4
proc
equiv_opt -assert -map +/intel_alm/common/alm_sim.v synth_intel_alm -family cyclonev # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mux4 # Constrain all select calls below inside the top module
select -assert-count 1 t:MISTRAL_ALUT6
select -assert-none t:MISTRAL_ALUT6 %% t:* %D
design -load read
hierarchy -top mux8
proc
equiv_opt -assert -map +/intel_alm/common/alm_sim.v synth_intel_alm -family cyclonev # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mux8 # Constrain all select calls below inside the top module
select -assert-count 1 t:MISTRAL_ALUT3
select -assert-count 1 t:MISTRAL_ALUT5
select -assert-count 2 t:MISTRAL_ALUT6
select -assert-none t:MISTRAL_ALUT3 t:MISTRAL_ALUT5 t:MISTRAL_ALUT6 %% t:* %D
design -load read
hierarchy -top mux16
proc
equiv_opt -assert -map +/intel_alm/common/alm_sim.v synth_intel_alm -family cyclonev # equivalency check
design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
cd mux16 # Constrain all select calls below inside the top module
select -assert-count 1 t:MISTRAL_ALUT3
select -assert-count 2 t:MISTRAL_ALUT5
select -assert-count 4 t:MISTRAL_ALUT6
select -assert-none t:MISTRAL_ALUT3 t:MISTRAL_ALUT5 t:MISTRAL_ALUT6 %% t:* %D