SystemVerilog 拥有unique关键字和priority关键字,旨在解决上述问题。 SystemVerilog中的unique和priority关键字修饰符放在if,case,casez,casex语句之前,如下所示: 代码语言:javascript 代码运行次数:0 AI代码解释 uniqueif(expression)statementselsestatements prioritycase(case_expression)case_item_1:case_expression_1case_...
SystemVerilog拥有unique关键字和priority关键字,旨在解决上述问题。SystemVerilog中的unique和priority关键字修饰符放在if,case,casez,casex语句之前,如下所示: 如果使用了if...else语句时,SystemVerilog中unique和priority关键字仅放置在第一个if之前,但是会影响后续所有else if和else语句。 unique unique关键字告诉所有支持...
uniqueandunique0ensure that there is no overlapping case items and hence can be evaluated in parallel. If there are overlapping case items, then a violation is reported. If more than one case item is found to match the given expression, then a violation is reported and the first matching ex...
在Verilog中,代码不规范的case语句经常会导致意外的综合优化或意外的latch。如果未在硅前仿真或门级仿真中发现这些问题,则很容易导致芯片无法正常工作。SystemVerilog 拥有unique关键字和priority关键字,旨在解决上述问题。SystemVerilog中的unique和priority关键字修饰符放在if,case,casez,casex语句之前,如下所示: unique if...
SystemVerilog 'unique' and 'priority' if-else 条件语句用于决定是否执行语句。if else SystemVerilog 引入了一下用于违规检查的构造。if else unique-if unique0-if priority-if unique-if, unique0-if unique-if按任意顺序评估条件,并执行以下操作:
Clifford Cummings
SystemVerilog's priority & unique - A Solution to Verilog's "full_case" & "parallel_case" Evil Twins! Clifford E. Cummings Sunburst Design, Inc. ABSTRACT At Boston SNUG 1999, I introduced the evil twins of Verilog synthesis, "full_case" and "parallel_case.[2]" In the 1999 Boston ...
Click to print (Opens in new window) SystemVerilog Unique And Priority – How Do I Use Them? September 19, 2015byJason Yu Improperly coded Verilog case statements can frequently cause unintended synthesis optimizations or unintended latches. These problems, if not caught in pre-silicon simulations...
在Verilog中,代码不规范的case语句经常会导致意外的综合优化或意外的latch。如果未在硅前仿真或门级仿真中发现这些问题,则很容易导致芯片无法正常工作。SystemVerilog拥有unique关键字和priority关键字,旨在解决上述问题。 SystemVerilog中的unique和priority关键字修饰符放在if,case,casez,casex语句之前,如下所示: ...