1. 维度在标识符前面的部分称为packed array,在标识符后面的部分称为unpacked array,一维的pakced array也称为vector。 packed array packed array只能由单bit数据类型(bit,logic,reg)、enum以及其他packed array和packed structure组成。packed array保证在内存中一定是一段连续的bit unpacked array unpacked array的元...
1-D Packed and1-D Unpacked Array 下面是一个一维packed数组和1维unpacked数组的示例: module PU; logic [31:0] v1 [7:0]; //1-D packed & 1-D unpacked (memory) initial begin //Array Index 7 of unpacked v1[7] = 'h FF_FF_FF_FF; //equivalent to v1[7][31:0] $display(v1); ...
unpacked数组与packed数组在物理存储上的关键区别在于，unpacked数组在物理上不能保证连续存储，而packed数组则能确保连续性。这意味着unpacked数组中的元素可能分布在不同的存储单元中，而非连续。例如，在一个unpacked数组中，元素uP0到uP3不会在物理上连续存放。另一方面，packed数组被视为一个整体，类似于...
3-D Packed and 1-D Unpacked Array logic [2:0][1:0][7:0] uP [3:0]; 上面声明了一个1维unpacked数组uP,一共4项,每项是一个3维packed数组。如果每个unpacked数据项使用1word存储,那么总的存储空间是 4*1word * 2 因为1word装不下一个packed数组 原文标题:SystemVerilog中的Packed和Unpacked数组 文...
Packed + Unpacked Array 下面显示的示例演示了一个多维packed+unpacked数组。 moduletb;bit[3:0][7:0] stack [2][4];// 2 rows, 4 colsinitialbegin// Assign random values to each slot of the stackforeach(stack[i])beginforeach(stack[i][j])beginstack[i][j] =$random;$display("stack[%0...
Both packed and unpacked array parameters are a SystemVerilog feature that is not currently supported. 👍1 martinwhitakerclosed this as completedon Nov 16, 2024 Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Metadata Assignees martinwhitaker ...
And when I compiled it, I got an error: "Error (10053): Verilog HDL error at rom_sin.v(274): can't index object "MY_ROM" with zero packed or unpacked array dimensions" Please tell me why this error occurs and how to fix it. Thank you so much! Translate Tags: ...
verilator --lint-only test.v %Error: test.v:5:22: Unsupported: Unpacked array in packed struct/union 5 | logic [1:0] a[2:0]; | ^ %Error: Exiting due to 1 error(s) Since the code should actually result in an unpacked struct, there would be good with a note that this is ...
问题描述: packed array和 unpacked array,是我在SV里学到的概念。 但是在quartus syn的时候,会报错。 解决方法: 1. packed array的概念 2.以sv格式添加... 查看原文 Systemverilog语言(3)---data types(1/2) ):表示位扩展信号,可以将每一位扩展为指定值;但是注意全1是不能扩展的,必须全部写出来,如上...
Difference between logic [7:0][3:0] ARRAY; and logic ARRAY [7:0][3:0]; in system verilog kurts1March 3, 2008, 8:36pm2 When you declare an array, there are two types of dimensions: packed and unpacked. For example, imagine you have a variable that is 12 bits wide: ...