Let write this example using verilog case statement // www.referencedesigner.com // Verilog Tutorial // Example of multiplexer module mux_case(out,cntrl,in1,in2); input cntrl,in1,in2; output out; reg out; always @ * case (cntrl) 1'b0: out = in1; 1'b1 : out = in2; end...
It is also possible for us to use an else-if type statement here but the else statement is more succinct. The behaviour is the same in both cases as the signal can only ever be 0b or 1b in a real circuit. SystemVerilog Case Statement We use the SystemVerilog case statement to select...
I am trying to generate a state machine where no' of states depends on the parameter, so how can I write a verilog code for this variable no' of states. I tried writing using generate statement here 'rep' is a parameter generate for(j=0;j<rep-1;j\+\+) begin:statemachine j\...
Just like in C, the VHDL designer shouldalwaysspecify a default condition provided that none of the case statements are chosen. This is done via the “when others =>” statement. See the code below for an example of this. One annoyance with case statements is that VHDL does not allow the...
In a case statement, the comparison only succeeds when each bit of the expression matches one of the alternatives including 0, 1, x and z. In the example shown above, if any of the bits inselis either x or z, thedefaultstatement will be executed because none of the other alternatives ...
CAUSE: In a Verilog Design File ( .v ) , you used a case item expression that contains a Don't Care ( x ) or High Impedance ( z ) value. During simulation, the value of a case item expression must ...
modulecase_example; 5 reg[2:0]data; 6 7 always@(data)begin 8 case(data) 9 3'h2:$display("value of data is 2"); 10 3'h4:$display("value of data is 4"); 11 3'h5:$display("value of data is 5"); 12 default:$display("default statement is executed for data = %0d",data...
Verilog 中的 case 语句是一种非常常用的条件语句,它可以根据不 同的条件执行不同的操作。在本文中,我们将介绍 Verilog 中的 case 语句,并列举一些常见的用法和示例。 1. 基本用法 case 语句的基本语法如下: ``` case (expression) value1: statement1; value2: statement2; ... default: statementN; end...
I'm a beginner for verilog design. I have a question. Is there any way that could express a case statement in for loop including default part? I tried the code below. /// (reg [2:0] ctrl) for(i=0 ; i<5; i=i\+1) begin case(ctrl) i : begin out <= i; end endcase end...
TheCasestatementcanselectacandidatebasedonthevalueofthecharactervariable. A.正确 B.错误 免费查看参考答案及解析 题目: 条件语句有两种:If-else语句和case语句,关于二者的区别下面描述不正确的是()。 A.If-else语句和case语句条件表达式都一样。 B.if-else语句适于对不同的条件,执行不同的语句;对于每个判定只有...