在rtl仿真中,有四种状态,分别是0、1、x(unknown values)和z(high-impedance values)。 case 结构体中:0,1,X与Z是四种不同的状态,case条件比较时会检测比较双方每个bit是否完全相等。 casez 结构体中:把Z当做don’t care conditions,case条件比较时,比较双方存在Z值的bit位不参与比较 ,其他比特位相等则视为条...
2. Casez and Casex will give the same output after synthesis, treating both x, z in case items as dont cares. 就是说你的case(不是casez/casex的时候)的index列表里面的x和z,都被综合工具认为是不可达到的状态就被去掉了。 casez和casex里面的x/z都被认为是don't care,所以综合出的电路会是一致的...
Casez and Casex will give the same output after synthesis, treating both x, z in case items as dont cares. 就是说你的case(不是casez/casex的时候)的index列表里面的x和z,都被综合工具认为是不可达到的状态就被去掉了。 casez和casex里面的x/z都被认为是don’t care,所以综合出的电路会是一致的。
1. Case statement will not consider for synthesis, the items containing x or z. 2. Casez and Casex will give the same output after synthesis, treating both x, z in case items as dont cares. 就是说你的case(不是casez/casex的时候)的index列表里面的x和z,都被综合工具认为是不可达到的状态就...
1. Case statement will not consider for synthesis, the items containing x or z. 2. Casez and Casex will give the same output after synthesis, treating both x, z in case items as dont cares. 就是说你的case(不是casez/casex的时候)的index列表里面的x和z,都被综合工具认为是不可达到的状态就...
2. Casez and Casex will give the same output after synthesis, treating both x, z in case items as dont cares. 就是说你的case(不是casez/casex的时候)的index列表里面的x和z,都被综合工具认为是不可达到的状态就被去掉了。 casez和casex里面的x/z都被认为是don't care,所以综合出的电路会是一致的...
Verilog defines three different versions of case statement: case, casez, casex. This article explains their differences and when to use each of them.
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Switch cases with have a value and corresponding activities.Constructor Summary Rozbaliť tabuľku ConstructorDescription SwitchCase() Creates an instance of SwitchCase class.Method Summary Rozbaliť tabuľku Modifier and TypeMethod and Description List<Activity> activities() Get the activities...
The summary route is 10.0.0.0/8, and the cost is 1000. After the active/standby switchover is performed on the active plane, the VPN routes on AR2 are re-converged. Assume that AR2 first receives a route 10.x.x.x whose cost is smaller than 200. The cost of the summary route 10.0...