因为用verilog写程序时虽然形式上可以写为比如256,但是实际存储对应的还是0100H,且一个数码管只能显示一个十进制数。因此这个问题相当于二进制如何转换为一个BCD(Binary Code Decimal)码数。 本文只考虑最常见的8421码的转换,而且是压缩BCD码。 一、算法原理 根据二进制与十进制转换的定义可知,将二进制数按位加权求...
"input.txt" 需要放在与 Verilog 源代码相同的目录中,并在文件中包含要读取的十六进制数据(每行一个)。 3.使用 Verilog 的fget函数输入文件读取功能,逐行读取文件内容并将其存储在寄存器或内存中。 4.读取一行:系统函数 $fgets 从 [hl]fd[/hd] 指定的文件中将字符读入变量 str 直到 str 被填满,或者读取换行...
if (enable == 1'b1) begin data = 10; // Decimal assigned address = 16'hDEAD; // Hexadecimal wr_enable = 1'b1; // Binary end else begin data = 32'b0; wr_enable = 1'b0; address = address + 1; end 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 和C语言一样,我们可以在Ve...
nonblocking assignments -> sequential blocks -> use '<=' (just think about AND gate connected with a DFF) 3. Behavioral Verilog means no specific hardware design (but should be able to envision it.) 4.Learn to use the function to calculate some value in the compiler process B. The synta...
data = 10; // Decimal assigned address = 16'hDEAD; // Hexadecimal wr_enable = 1'b1; // Binary end else begin data = 32'b0; wr_enable = 1'b0; address = address + 1; end 和C语言一样,我们可以在Verilog条件语句中使用任何运算符,甚至嵌套if else语句。
对于信号的读取,我们在SystemVerilog中,可以直接读取信号值,而在cocotb中,其为接口变量提供了value方法属性用于获取信号值。 读取方式:sig.value 返回类型: BinaryValue Accessing the value property of a handle object will return a BinaryValue object. Any unresolved bits are preserved and can be accessed usin...
Example to convert decimal to binary To convert a decimal number to binary, you can follow these steps: Divide the decimal number by 2. Write down the integer quotient and the remainder. Repeat the process with the integer quotient until the quotient is 0. Write the remainders in reverse or...
SystemVerilog String Example moduletb;// Declare a string variable called "dialog" to store string literals// Initialize the variable to "Hello!"stringdialog ="Hello!";initialbegin// Display the string using %s string format$display("%s", dialog);// Iterate through the string variable to iden...
Learn how to use SystemVerilog strings with simple easy to understand code example. Learn string manipulations, methods & operators - execute in browser!
binary value1101, represented by a 4-bit vector. Thelogicvectorvectoris assigned the hexadecimal value3B, represented by an 8-bit vector. TheregvariableregDatais assigned the decimal value42, represented by an 8-bit vector. TheintegervariableintNumis assigned the maximum value that can be stored...