tailieunhanh - Compact Summary of VHDL phần 1

Đây không phải là dự định như là một hướng dẫn. Đây là một hướng dẫn tham khảo nhanh chóng để tìm cú pháp báo cáo hoặc báo cáo bạn cần phải viết mã VHDL. VHDL là trường hợp nhạy cảm, thư từ trường hợp trên là tương đương với chữ thường. | Compact Summary of VHDL ISummary IDesign Units ISequential Statements Concurrent Statements IPredefined Types IDeclarations I Resolution and Signatures Reserved Words IOperators IPredefined Attributes IStandard Packages I Version please report any issues to squire@ Compact Summary of VHDL This is not intended as a tutorial. This is a quick reference guide to find the statement or statement syntax you need to write VHDL code. VHDL is case insensitive upper case letters are equivalent to lower case letters. Reserved words are in lower case by convention and shown in bold in this document. Identifiers are simple names starting with a letter and may have letters and digits. The underscore character is allowed but not as the first or last character of an identifier. A comment starts with minus minus -- and continues to the end of the line. Indentation is used for human readability. The language is free form with the characters space tab and new-line being white space. Contents Design units Sequential Statements Concurrent Statements Predefined Types Declaration Statements Resolution and Signatures Reserved Words Operators Predefined Attributes VHDL standard packages and types A Other Links Notation used in this Compact Summary Each item has a very brief explanation of possible use. a representative possibly not complete syntax schema one or more samples of actual VHDL code. http help VHDL 1 of 2 22 12 2001 15 23 33 Compact Summary of VHDL In the syntax statement stuff means zero or one copy of stuff . In some cases optional is used to not clutter up the syntax with . In the examples assume the appropriate declarations for identifiers appropriate enclosing design unit and appropriate context clauses. Other Links VHDL help page Hamburg VHDL Archive the best set of links I have seen RASSP Project VHDL Tools A VHDL Organization Home Page gnu GPL VHDL for Linux under development A More information on Exploration VHDL from FTL .