常见的有符号和无符号类型 有符号: byte、shortint、int、longint、integer 无符号: bit、logic、reg、net-type exp 代码语言:javascript 代码运行次数:0 运行 AI代码解释 logic[7:0]logic_vec=8’b1000_0000;logic[7:0]logic_vec=8'b1000_0000;bi
1字(word)= 4字节(byte)=32(bit) logic是四值类型,24bit,每个bit需要2个位来存储,所以需要48位,连续存储所以需要2个word。 非合并型pack,3 * 8 * 2位 所以需要 3个word 2.2 基本数组操作 for 和 foreach循环 initial begin bit [31: 0] src[5], dst[5]; for (int i = 0; i < $size(src)...
(8bit是一个byte,32bits是一个word)bit [3][7:0] b_pack ; //合并型,会分配连续的24bit的内存空间,占据32bits空间,系统是总是以一个word整数倍分配空间 bit [7:0] b_unpack[3] ; //非合并型,会分配三个不连续(并行的)的内存空间,每个内存空间有8个bit, 占据3个word的存储空间; //如果使用logic...
rand bit [7:0] len; rand integer data[1]; constraint db { data.size == len; } 1. 2. 3.class packet; rand bit [31:0] src, dst, data[4]; rand bit [7:0] kind; constraint cstr { src > 10; src < 15; } function print(); $display(" src is %0d\n dst is %0d\n d...
101 27 0 2 years ago mriscv/81 A 32-bit Microcontroller featuring a RISC-V core 100 43 1 8 years ago fft-dit-fpga/82 Verilog module for calculation of FFT. 98 14 3 a month ago DreamcastHDMI/83 Dreamcast HDMI 98 26 2 6 months ago RePlAce/84 RePlAce global placement tool 97 68...
By company size Enterprises Small and medium teams Startups Nonprofits By use case DevSecOps DevOps CI/CD View all use cases By industry Healthcare Financial services Manufacturing Government View all industries View all solutions Resources Topics AI DevOps Security Software Development...
By company size Enterprises Small and medium teams Startups Nonprofits By use case DevSecOps DevOps CI/CD View all use cases By industry Healthcare Financial services Manufacturing Government View all industries View all solutions Resources Topics AI DevOps Security Software Development...
bit [8-1:0] data; endclass The handles v1, v8, and v16 are not type compatible as each is for a separate class, Vector__1, Vector__8, and Vector__16. You can’t assign between these handles, even with $cast(). Parameterized by type ...
Casting.SystemVerilog adds the ability to change the type, vector size or “signedness” of a value using a cast operation. To remain backward compatible with the existing Verilog language, casting in SystemVerilog uses a different syntax than C. ...
(); Packet p; void'( randomize( p.address, p.length, p.payload ) with { p.length > 1 && p.payload.size == p.length; } ); p.chksum = p.payload.xor(); return p; endfunction The byte stream is modeled using a queue, and a bit-stream cast is used to send the packet over...