在红外线技术中使用的0.85或者0.95微米波段的谩射传输,它允许有两种速率:1M和2M速率,在1M速率上,采用的是格雷编码:它的编码原理是每四位一组,每个组被编码成一个16位的码字,任意两个相临位只有一个二进制数不同,它和奇偶校验码都属于可靠性编码. 格雷码(Gray code)是由贝尔实验室的Frank Gray在1940年提出,用...
•通常一维数组用作memory模型表示,像reg [31:0]mema[0:255,]表示宽度32bit深度256的存储模型,仿真时可以使用$readmemh函数加载数据;而二维数组通常用于图像数据的表示,像reg[23:0] image[0:599][0:799]。 module data_type(); reg a;//标量 reg [3:0] b;//向量 wire[7:0] c;//向量 wire d...
"\tmemory[2] = %b\n", memory[2], "\tmemory[3] = %b\n", memory[3], "\tmemory[4] = %b\n", memory[4], "\tmemory[5] = %b\n", memory[5], "\tmemory[6] = %b\n", memory[6], "\tmemory[7] = %b\n", memory[7]); `simulation_time; $fclose(f); end always ...
流水线从 2 到 5+ 个阶段([Fetch*X]、Decode、Execute、[Memory]、[WriteBack]) 1.44 DMIPS/Mhz --no-inline 当几乎所有功能都启用时(1.57 DMIPS/Mhz 当分频器查找表启用时) 针对FPGA 进行了优化,不使用任何供应商特定的 IP /原语 AXI4、Avalon、wishbone 可选的 MUL/DIV 扩展 可选F32/F64 FPU(目前...
module SYN_FIFO #( parameter DATA_WIDTH=8, parameter ADDR_WIDTH=4, parameter DATA_DEPTH=1<<ADDR_WIDTH ) ( input clk, //时钟 input rst_n, //复位信号输入 input rd_en, //读取使能信号 input wr_en, //写使能信号 input [DATA_WIDTH-1'b1:0]data_w, //写入数据 output reg [DATA_WIDTH...
Memory Example In this example, register is an array that has four locations with each having a width of 16-bits. The design module accepts an additional input signal which is called addr to access a particular index in the array. module des ( input clk, input rstn, input [1:0] addr,...
i simulated a verilog code for memory controller in modelsim and it is working fine.But when tested in quartusII 7.2 it simulates but it does not give the desired output as shown in modelsimPE 6.1c.It does not pass the read write signals in quartus. I'm posting ...
简介:【system verilog for design】verilog 1995/2001/system verilog标准语法的一些演进 前言 最近在学习一些verilog/system verilog for design的基础知识,觉得有些东西总结总结还是挺好的,毕竟好记性不如烂键盘; 正文开始 verilog有1995和2001两个标准,之后便合入到system verilog标准中了,因此结合最近看的课总结一下...
Here is an example to explain howFIFO uses the memory. This is a fifo of length 8, WP and RP are the locationswhere write pointer and read pointer points. Shaded area in the diagram isfilled with data. When ever FIFO counter becomes zeroor BUF_LENGTH, empty or full flags will be set...
memory[ain] = din; endmodule *模块引用 假设在前面(可以是别的模块)定义了module ram(din,ain,dout,aout,rd,wr),则引用此 模块时只需写 ram myram(din_in_map,ain_in_map,dout_in_map,aout_in_map,rd_in_map,wr_in_map) ; //其中"ram"是所引用的module名,"myram"是你起的instance名,"din_...