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The main part is converting ice40_dsp to recognize the new FF types created in opt_dff instead of trying to recognize the mux patterns on its own. The fsm call has been moved upwards because the passes cannot deal with $dffe/$sdff*, and other optimizations don't help it much anyway.
17 lines
582 B
Plaintext
17 lines
582 B
Plaintext
read_verilog ../common/fsm.v
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hierarchy -top fsm
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proc
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flatten
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equiv_opt -run :prove -map +/ice40/cells_sim.v synth_ice40
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miter -equiv -make_assert -flatten gold gate miter
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sat -verify -prove-asserts -show-public -set-at 1 in_reset 1 -seq 20 -prove-skip 1 miter
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design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
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cd fsm # Constrain all select calls below inside the top module
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select -assert-count 4 t:SB_DFF
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select -assert-count 2 t:SB_DFFESR
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select -assert-max 15 t:SB_LUT4
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select -assert-none t:SB_DFFESR t:SB_DFF t:SB_LUT4 %% t:* %D
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