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The Foundation Express HDL compiler has several methods of writing circuit design information directly in your VHDL source code.
Using Foundation Express directives, you can direct the translation from VHDL to components with special VHDL comments. These synthetic comments turn translation on or off, specify one of several hard-wired resolution methods, and provide a means to map subprograms to hardware components.
To familiarize yourself with Foundation Express directives, consider the following topics presented in this chapter.