：现场可编程门阵列（FPGA）在双FPGA芯片的特点

波形发生器，带TESTBENCH， 多平台 -- the design makes use of the new shift operators available in the VHDL-93 std -- this design passes the Synplify synthesis check -- download from: www.fpga.com.cn & www.pld.com.cn -waveform generator, with TESTBENCH. Multi-platform-- the design makes use of the new shift opera tors available in the VHDL-93 std-- this design passes the Synplify synthesis check-- downloa d from : www.fpga.com.cn

MAX481、MAX483、MAX485、MAX487-MAX491以及 MAX1487是用于RS-485与RS-422通信的低功耗收发器， 每个器件中都具有一个驱动器和一个接收器(The MAX481, MAX483, MAX485 The MAX487-MAX491, and MAX1487 low-power transceivers for RS-485 and RS-422 communication, each device has a drive and a receiver)

使用IEEE.STD_LOGIC_1164.ALL; - 取消对以下库声明，如果用符号或无符号值using--算术功能 - 使用IEEE.NUMERIC_STD.ALL; - 取消对以下库声明如果instantiating--任何Xilinx基元在这代码.--库UNISIM; - 使用UNISIM.VComponents.all;实体看门狗端口（SYSRST：在STD_LOGIC; SYSCLK：在STD_LOGIC; WR：在STD_LOGIC; DATAIN：在STD_LOGIC_VECTOR（7 DOWNTO0）; RESETOUT：出STD_LOGIC; debugStates：出STD_LOGIC_VECTOR（1 DOWNTO0）; debugDivider：出STD_LOGIC; debugFlag：出STD_LOGIC）;年底看门狗，看门狗建筑行为issignal timeoutSelect：STD_LOGIC_VECTOR（1 DOWNTO0）;信号timerRestart：STD_LOGIC;信号timerEnable：STD_LOGIC;组件wdtcntl端口（调试：出STD_LOGIC_VECTOR（1 DOWNTO0）;系统时钟：在STD_LOGIC; SYSRST：在STD_LOGIC; WR：在STD_LOGIC; DATAIN：在STD_LOGIC_VECTOR（7 DOWNTO0）;重新启动：从STD_LOGIC; timerEnb：出STD_LOGIC; timerSel：出STD_LOGIC_VECTOR（1 DOWNTO0））;最终组件;组件wdt_timer端口（dbDivider：出STD_LOGIC; DBFLAG：出STD_LOGIC; SYSRST：在STD_LOGIC; SYSCLK：在STD_LOGIC;启用：在STD_LOGIC;重启：在STD_LOGIC; RESETOUT：出STD_LOGIC; timeoutSel：在STD_LOGIC_VECTOR（1 DOWNTO0 ））;结束部分; begincontroller：wdtcntl端口映射（debugStates，系统时钟，SYSRST，WR，DATAIN，timerRestart，timer

project proposal of verilog language that is gud for beginners

本程序为24小时计时器，稳定无误差。简单好用，是Verilog HDL语言初学者的指引。-This procedure for 24-hour timer, stable error-free. Easy-to-use, is the Verilog HDL language beginners guide.

实现矩阵相乘，即点积运算，为VERILOG语言。可以根据自己的需要改变维数，采用了流水线的结构(Achieve matrix multiplication, ie dot product operations, for VERILOG language. You can change the dimension according to their needs, using a pipeline structure)

用VHDL实现60秒倒计时的功能 倒计时为0时蜂鸣器持续响起(Continued sounded to achieve 60 seconds of the countdown function with VHDL countdown to the 0:00 buzzer)

RS码的FPGA编码文件，QUARTUS工程(The RS codes FPGA encoded file, QUARTUS engineering)

VHDL的重要PPT资料,对初学者非常有益处-VHDL important PPT information is very useful for beginners

基于DE2开发板的VGA显示模块，仅供大家参考-DE2 development board based on the VGA display module, for your reference