先放结论: 枚举可以直接赋值给logic, logic赋值给枚举需要做类型转换 测试代码如下 typedef enum logic [1:0] { TYPEA = 2'd0, TYPEB = 2'd1, TYPEC = 2'd2, TYPED = 2'd3 } enum_type_t; module top_module; enum_type_t enum_val1 = TYPEA; enum_
moduletb;// "e_true_false" is a new data-type with two valid values: TRUE and FALSEtypedefenum{TRUE, FALSE} e_true_false;initialbegin// Declare a variable of type "e_true_false" that can store TRUE or FALSEe_true_false answer;// Assign TRUE/FALSE to the enumerated variableanswer =...
module datatype1; typedef enum { read=10, write[5], intr[6:8] } cycle; enum { readreg[2] = 1, writereg[2:4] = 10 } reg0; initial begin $display ("read=%0d\n", read); $display ("write0=%0d write1=%0d write2=%0d write3=%0d write4=%0d\n", write0,write1,wri...
systemverilog 枚举类型 1.定义枚举类型 enum {RED, YELLOW, GREEN} light_1;//int type; RED = 0, YELLOW = 1, GREEN = 2enum bit[1:0] {RED, YELLOW, GREEN} light_2;//bit type; RED = 0, YELLOW = 1, GREEN = 2 2.定义枚举变量 moduletb;//"e_true_false" is a new data-type wi...
Error-[ENUMRANGE] Enum label outside value range The enum label 'red' has the value 'h00000013 which is outside the range of the base type of the declared enum, which is 4 bit unsigned. 上面这个示例也会导致编译错误,因为red=‘h13超出了 bit[3:0]所能够表示的最大值('hF) 。修改成下面...
typedefenum{FALSE=1’b0,TRUE}boolean;boolean ready;booleantest_complete; 8. 结构体和联合体 在Verilog语言中不存在结构体或联合体,而结构体或联合体在将几个声明组合在一起的时候非常有用。SystemVerilog增加了结构体和联合体,它们的声明语法类似于C。
I'm receiving the "Error (10928): SystemVerilog error at rly.v(141): enum type cannot be assigned to enum type - enum target requires cast" while compiling my code. Here is the code: typedef enum reg { IDLE, LOAD, SHIFT} rly_fsm_t; rly_fsm_t state...
Example-1 :Enumeration Type [DataTypes] This example shows how to declare enum. module enum_datatype; //declaration enum { red, green, blue, yellow, white, black } Colors; //display members of Colors initial begin Colors = Colors.first; for(int i=0;i&amp...
enum bit {TRUE,FALSE} Boolean; //2位宽的枚举类型,四态基类 enum logic[1:0] {WAIT,LOAD,READY} state; 1. 2. 3. 4. 如果对显式定义枚举类型的枚举标签赋值,那么这个值的宽度必须与基类宽度相符。 enum logic[2:0] {WAIT=3'b001,
enum{标签名1,标签名2,...}变量名; 枚举可以理解为给标签名赋值,或给这个给数值一个标签 如果没有明确给定数据类型,枚举中的数值是int类型,且数值依次是0, 1, 2... 这个情况是不是很像有限状态机对状态的定义,就像这样: //状态定义parameter S0=3'd0;parameter S1=3'd1;parameter S2=3'd2;parameter...