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| -rw-r--r-- | README.md | 5 |
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@@ -414,6 +414,11 @@ Verilog Attributes and non-standard features `abc9` to preserve the integrity of carry-chains. Specifying this attribute onto a bus port will affect only its most significant bit. +- The port attribute ``abc_arrival`` specifies an integer (for output ports + only) to be used as the arrival time of this sequential port. It can be used, + for example, to specify the clk-to-Q delay of a flip-flop for consideration + during techmapping. + Non-standard or SystemVerilog features for formal verification ============================================================== |