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Gowin: deal with active-low tristate (#2971)

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* deal with active-low tristate

* remove empty port

* update sim models

* add expected lut1 to tests
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Pepijn de Vos 2021-08-20 21:21:06 +02:00 • committed by GitHub
parent c2866780d2
commit c2d358484f
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5 changed files with 15 additions and 7 deletions
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tests/arch/gowin/tribuf.ys
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@ -9,5 +9,6 @@ design -load postopt # load the post-opt design (otherwise equiv_opt loads the p
cd tristate # Constrain all select calls below inside the top module
#Internal cell type used. Need support it.
select -assert-count 1 t:TBUF
select -assert-count 1 t:LUT1
select -assert-count 2 t:IBUF
select -assert-none t:TBUF t:IBUF %% t:* %D
select -assert-none t:TBUF t:IBUF t:LUT1 %% t:* %D