System Verilog中的case语句有两种形式：unique case和parallel case。其中，unique case用于处理互斥的情况，而parallel case用于并行的情况。1. unique case unique case语句的语法结构如下：```unique case (expression)value1: statement1;value2: state
unique case (1'b1) // inverse case statement state[0]: next_state = SET; state[1]: next_state = GO; state[2]: next_state = READY; endcase enum logic [3:0] {READY=3'b001, SET=3'b010, GO=3'b100} state, next_state; always_comb priority case (1'b1) // inverse case statem...
SystemVerilog Case Statement We use the SystemVerilog case statement to select a block of code to execute based on the value of a given signal in our design. When we write a case statement in SystemVerilog we specify an input signal to monitor and evaluate. The value of this signal is th...
第一部分:Case语句概述 Case语句提供了一种基于条件值的简洁和清晰的编程方式。它可以方便地处理大量的条件和操作,从而减少代码量和增加可读性。Case语句的核心结构如下所示: systemverilog case(expression) constant1: statement; constant2: statement; . . . default: statement; endcase 在上述代码中,关键字case...
unique0 case: similar to unique case, but it does not report error if no items match the expression. Similarly, there are priority and unique if-else-if statement. Casez Casex Case Addition: Reverse Case Statement The case(1′b1) in Verilog is sometimes known as the reverse case statement...
A SystemVerilog case statement checks whether an expression matches one of a number of expressions and branches appropriately. The behavior is the same as in Verilog. Click here to learn about Verilog case statements ! unique,unique0 case All case stat
// case statement module adder_array(input [63:0] a,b, output [63:0] sum); generate case (WIDTH) 1: begin : ease1 assign sum[63 -: 63] = 'b0; adder #(WIDTH) adder1(a[0], b[0], sum[0]); end default: begin : def ...
default:statement_block endcase 1. 2. 3. 4. 5. 6. 2.循环语句 (1)for循环 基本格式: for(initializing_expression;terminating_expression;loop_increment_expression) begin ... end 1. 2. 3. 4. 在Verilog中,用来控制for循环的变量必须在循环体之前声明。如果两个或多个并行程序中的循环使用相同的循环...
:<statement >可用来识别单条语句 begin:block1 //named block block2:begin//带label的块 ... ... End:block1. end 一个语句块不能同时有label和block name 2.9. 改进的case语句 l verilog中case语句默认带有优先级(由前至后) l SV为case,casez,casex的判定提供了修饰符unique和priority,均需指明所有条件...
syn keyword systemverilogStatementbytecasecasex casez cell chandleclassclocking syn keyword systemverilogStatement cmos configconstconstraint contextcontinuecover syn keyword systemverilogStatement covergroup coverpoint cross deassigndefaultsyn keyword systemverilogStatement defparam design disable distdoedgeelseend ...