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...
The array that was declared as packed can be left actually as not packed. Currently, this can happen only if maximum delta is so big that it does not fit to 63 bits. In this case, packing cannot be better for sure. However, packed array size can be bigger than unpacked array size ve...
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...
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:...
localparam integer x_kernel [2:0][2:0] ={ {-1, 0, 1}, {-2, 0, 2}, {-1, 0, 1}}; wrong element type in unpacked array concatenation multiple packed dimensions are not allowed in this mode of verilog Upvote 0 Downvote Apr...
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 fo...