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的元素数据...
SystemVerilog 中有两种类型的数组- packed array 和 unpacked array。 packed array用于引用在变量名称之前声明的维度。 bit[3:0]data;// Packed array or vectorlogicqueue[9:0];// unpacked array packed array保证表示为一组连续的位。它们只能用于单位数据类型(如、和其他递归packed array)组成。bitlogic Sing...
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数组和packed数组的主要区别是unpacked数组在物理存储时不能保证连续,而packed数组则能保证在物理上连续存储。 另一种看待unpacked数组和packed数组差异点的角度是,packed数组可以看成一个整体,一个单一向量。 unpacked数组的维度是在数组名称之后声明的,数组中内容可以是任何数据类型或者其他数组。 bit uP [3:0]...
On this issue I'm reporting: A bug(?) I found when trying to declare a parameter as a packed array (note that issue #846 refers to unpacked arrays). A suggestion/request to improve the error message displayed on unsupported features. I w...
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: ...
Here's my SV packed array // dut.sv module dut (...); ... logic [8-1:0][16-1:0] mem_a; After verilator compilation I can see that it was flattened into 1 dimensional array // obj_dir/dut.h VL_SIGW(dut__DOT__mem_a,127,0,4); And the same in the VCD waveform $var...
I had the same issue, and suspect it is simply an unsupported SystemVerilog feature in Quartus II. I was able to make an unpacked structure work. Make the following change to line 140: <line 140> packed_struct array_of_structs [10:0]; I hope this works for...
write.bytes(data) Write byte array buffer.write.bytes(bytes) write.string(str) Write string buffer.write.string("hello") write.cString(str) Write null-terminated string buffer.write.cString("hello") write.int(value, bitCount) Write signed integer buffer.write.int(-42, 16) write.uint(value,...
The file defines two message types (DTOs) PackedOrder and UnpackedOrder, and a service called OrderService. The repeated label on the productIds field emphasizes that it can have multiple values of type integer similar to a collection or an array. Starting from protobuf v2.1.0, the packed ...