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...
多维压缩数组,以及多位压缩数组的选择(selections within multidimensional packed arrays)是可综合的。当设计需要经常引用向量的某些分区时,这一特性会很有用。例如在上面的例子中,这一特性就使得我们能够更加容易地从32bit向量中选择字节(byte)。 2.5 数组(非压缩数组) Array (unpacked arrays) SystemVerilog允许声明线...
Packed和Unpacked数组作为子程序的参数 数组可以作为参数传递给子程序,当数组作为值传递给子程序时,会将这个数组复制一份传递给子程序。task trial (int a[3:1][3:1]); //’a’ is a two-dimensional array //(2-D unpacked) 上面是一个SystemVerilog task声明的示例,该task会将一个2维unpacked数组作为...
Packed和Unpacked数组作为子程序的参数 数组可以作为参数传递给子程序,当数组作为值传递给子程序时,会将这个数组复制一份传递给子程序。 登录后复制task trial (int a[3:1][3:1]); //’a’ is a two-dimensional array //(2-D unpacked) 上面是一个SystemVerilog task声明的示例,该task会将一个2维unpac...
A 4-state integral type, including a packed array or packed structure. A fixed-size unpacked array or unpacked structure, where each element has a valid data type for a net. A lexical restriction applies to the use of the reg keyword in a net or port declaration. A net type keyword sha...
%p用于打印聚合表达式,例如解压缩结构,数组和联合(unpacked structure,array,unions),结构体等等,非常方便,其效果如以下代码例所示 `timescale 1ns/1ps module hvl_top( ); typedef struct packed { logic bit1; logic [7:0] byte1; } packet_t;
Imported taskInterfaceIntegralLRMOpen arrayPacked array进程信号单一类型(Singular)SystemVerilog非压缩数组(Unpacked array)VerilogVPI附录K 参考书目 下载地址:http://static.wenjiangs.com/pdf/d37c5fe1-6cb229b5.zip 在线阅读:https://www.wenjiangs.com/docs/ieee-systemverilog 举报/反馈 发表评论 发表 ...
Packed & unpacked arrays Array indexing Structs & packed structs Unions & packed unions Dynamic arrays & methods foreach loop Associative arrays & methods Queues & concatenation operations Queue methods Interfaces - Interfaces are a powerful new form of abstraction and this section details how they wo...
are array querying functions, where h= handle to open array and d=dimension. If d = 0, then the query refers to the packed part (which is one-dimensional) of an array, and d> 0 refers to the unpacked part of an array. SystemVerilog: ...