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Added warning about adding fsm_encoding attributes to wires to manual

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Clifford Wolf 2016-07-08 18:31:31 +02:00
parent 21659847a7
commit d3f0d72427
1 changed files with 4 additions and 0 deletions
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manual/CHAPTER_Optimize.tex
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@ -222,6 +222,10 @@ This heuristic has proven to work very well. It is possible to overwrite it by s
and setting \B{fsm\_encoding}{\tt = "none"} on registers that match the above criteria
but should not be considered FSM state registers.
Note however that marking state registers with \B{fsm\_encoding} that are not
suitable for FSM recoding can cause synthesis to fail or produce invalid
results.
\subsection{FSM Extraction}
The {\tt fsm\_extract} pass operates on all state signals marked with the