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yosys/tests/arch/intel_alm/dffs.ys
Dan Ravensloft 2e37e62e6b 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).
2020-04-15 11:40:41 +02:00

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read_verilog ../common/dffs.v
design -save read
hierarchy -top dff
proc
equiv_opt -async2sync -assert -map +/intel_alm/common/alm_sim.v -map +/intel_alm/common/dff_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 dff # Constrain all select calls below inside the top module
select -assert-count 1 t:MISTRAL_FF
select -assert-none t:MISTRAL_FF %% t:* %D
design -load read
hierarchy -top dffe
proc
equiv_opt -async2sync -assert -map +/intel_alm/common/alm_sim.v -map +/intel_alm/common/dff_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 dffe # Constrain all select calls below inside the top module
select -assert-count 1 t:MISTRAL_FF
select -assert-count 1 t:MISTRAL_ALUT3
select -assert-none t:MISTRAL_FF t:MISTRAL_ALUT3 %% t:* %D