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SymbiFlow / yosys

SymbiFlow WIP changes for Yosys Open SYnthesis Suite
http://www.clifford.at/yosys/
ISC License
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Update CARRY4 sim model to handle disconnected CIN signal. #28

Closed litghost closed 5 years ago

litghost commented 5 years ago

Signed-off-by: Keith Rothman 537074+litghost@users.noreply.github.com

litghost commented 5 years ago

What is expected when both inputs are 1'bz?

1'bx or 1'bz, it doesn't really matter. It's not really valid.

litghost commented 5 years ago

Would it make sense to write a function?

Nope, because you cannot reuse functions easily between modules.