Quartus

Design Assistant warning: <Design should not contain combinatorial loops>. Found <number> combinatorial loop(s) related to this rule.


CAUSE: In the current design, the Design Assistant found the specified number of combinatorial loops, which is combinatorial logic that drives itself without being synchronized by a register. However, combinatorial loops can cause significant stability and reliability problems in a design. The submessage(s) of this message list the combinatorial loop(s) that the Design Assistant found.
ACTION: Make sure the design does not contain any combinatorial loops.

See also:

Analyzing Designs with the Design Assistant
Design Should Not Contain Combinatorial Loops

- PLDWorld -

 

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