From: Eddie Hung Date: Thu, 12 Dec 2019 00:38:43 +0000 (-0800) Subject: Update README.md :: abc_ -> abc9_ X-Git-Tag: working-ls180~928 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2666482282421bb54213ba01054111eadc401373;p=yosys.git Update README.md :: abc_ -> abc9_ --- diff --git a/README.md b/README.md index 1ce5d47ea..5cc52e842 100644 --- a/README.md +++ b/README.md @@ -364,16 +364,16 @@ Verilog Attributes and non-standard features it as the external-facing pin of an I/O pad, and prevents ``iopadmap`` from inserting another pad cell on it. -- The module attribute ``abc_box_id`` specifies a positive integer linking a +- The module attribute ``abc9_box_id`` specifies a positive integer linking a blackbox or whitebox definition to a corresponding entry in a `abc9` box-file. -- The port attribute ``abc_carry`` marks the carry-in (if an input port) and +- The port attribute ``abc9_carry`` marks the carry-in (if an input port) and carry-out (if output port) ports of a box. This information is necessary for `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 +- The port attribute ``abc9_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.