Answers Database M1 MAP: Running map with -os area may yield a larger implementation than with -oe normal Record #2260 Product Family: Software Product Line: FPGA Implementation Product Part: map Product Version: 1.4. Problem Title: M1 MAP: Running map with -os area may yield a larger implementation than with -oe normal Problem Description: Urgency: Hot General Description: Running map with the -os area option may result in a larger implementation than when running with the default -oe normal option. Solution 1: The -os optimization options in the M1.3 Mapper do not guarantee that you will always get a better result than processing a design without optimization. In general, the -os options will tend to give you better results when used in conjunction with tools such as Metamor and ABEL logic synthesis, since these tools do not do any FPGA-specific lookup table optimization. If you find that -os area is gives you a larger implementation than -oe normal, you should simply reprocess the design with the default settings. End of Record #2260 - Last Modified: 04/30/99 17:05

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