1) 单目运算符(unary operator):可以带一个操作数,操作数放在运算符的右边。 2) 二目运算符(binary operator):可以带二个操作数,操作数放在运算符的两边。 3) 三目运算符(ternary operator):可以带三个操作,这三个操作数用三目运算符分隔开。 clock = ~clock; // ~是一个单目取反运算符, clock是
示例5-4:使用条件运算符:带三态输出的4位加法器 //4-bitadderwithtri-stateoutputs,usingconditionaloperator //(nocarry). // //`begin_keywords"1800-2012"//useSystemVerilog-2012keywords moduletri_state_adder #(parameterN=4)//N-bitaddersize (inputlogicenable,//outputenable inputlogic[N-1:0]a,b...
第二个参数是format_string,它告诉如何将以下参数格式化为字符串。 moduletb;reg[8*19:0] str;reg[3:0] a, b;initialbegina=4'hA;b =4'hB;//Format 'a' and 'b' into a string given//by the format, and store into 'str' variable$sformat(str,"a=%0d b=0x%0h", a, b); $display(...
1. Avoid clock- and reset-gating (avoid writing combinational logic on the edge part.) 2. Always blocks should: [ a. Be always_ff @(posedge clock) blocks; b. Use the nonblocking assignment operator, with a delay <= #1 ] 3. No path should set a variable more than once 4. Reset a...
bool operator()(const T& x) const{ return !x;} }; <functional>中的常见谓词 equal_to 二元 arg1 == arg2 not_equal_to 二元 arg1 != arg2 greater 二元 arg1 > arg2 less 二元 arg1 < arg2 greater_equal 二元 arg1 >= arg2 less_equal ...
SystemVerilog Arrays, Flexible and Synthesizable - Verilog Pro 关于Streaming operator的介绍(以及很惊艳的可视化效果,和更高级的用法) amiq.com/consulting/201 amiq.com/consulting/201 关于SystemVerilog各种写法的可综合性 sutherland-hdl.com/pape 关于Blocking /Non-Blocking assignment赋值语句的综合效果 sunburst-...
2. Property operator 中|-> 与|=>,前者是要求在同一仿真时间标记上,a |-> b,对a和b做判断;而如果替换为后者,则只需要在下一个时钟周期(clock tick),进行判断。简单的记法就是"="视为是两个手指,non-overlap, “-”则可以形象地视为是overlap. ...
A linear sequence is easy to define using SystemVerilog ## operator. The ## operator defines delays in terms of clock ticks - for example, ##5 means a delay of 5 clock ticks as in the example below between signal ~reset and req. The following example shows how to define Sequence 1 ...
System Verilog assertions: Assertion definition, assertion benefits, system Verilog assertion types, immediate assertions, concurrent assertions, assert and cover properties and labels, overlapping and non-overlapping implications, edge testing functions, sequences, Vacuous success, property styles, System ...
H.2.3.1 Derived non-overlapping implication operatorH.2.3.2 Derived consecutive repetition operatorsH.2.3.3 Derived delay and concatenation operatorsH.2.3.4 Derived non-consecutive repetition operatorsH.2.3.5 Other derived operatorsH.3 语义H.3.1 Rewrite rules for clocksH.3.2 Tight satisfaction ...