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FPGA 的代码
移位寄存器：74164.txt
-- TTL164 Shift Register
-- download from: www.fpga.com.cn & www.pld.com.cn
library IEEE;
use IEEE.Std_logic_1164.all;
ENTITY dev164 IS
PORT(a, b, nclr, clock : IN BIT;
q : BUFFE
经典双进程状态机（含test beach）.txt
-- Classic 2-Process State Machine and Test Bench
-- MEALY TYPE STATE MACHINE EXAMPLE
-- dowload from: www.fpga.com.cn & www.pld.com.cn
library ieee;
use ieee.std_logic_1164.all;
ENTITY fsm I
带同步复位的状态机.txt
-- State Machine with Asynchronous Reset
-- dowload from: www.fpga.com.cn & www.pld.com.cn
library ieee;
use ieee.std_logic_1164.all;
entity stmch1 is
port(clk, in1, rst: in std_logic;
双2－4译码器：74139.txt
-- Dual 2-to-4 Decoder
-- A set of conditional signal assignments model a dual 2-to-4 decoder
-- uses 1993 std VHDL
-- download from: www.pld.com.cn & www.fpga.com.cn
library IEEE;
use IEEE.Std
带三态输出的8位d寄存器：74374.txt
-- Octal D-Type Register with 3-State Outputs
-- Simple model of an Octal D-type register with three-state outputs using two concurrent statements.
-- download from: www.fpga.com.cn & www.pld.com.cn
移位寄存器：74164.txt
-- TTL164 Shift Register
-- download from: www.fpga.com.cn & www.pld.com.cn
library IEEE;
use IEEE.Std_logic_1164.all;
ENTITY dev164 IS
PORT(a, b, nclr, clock : IN BIT;
q : BUFFE
经典双进程状态机（含test beach）.txt
-- Classic 2-Process State Machine and Test Bench
-- MEALY TYPE STATE MACHINE EXAMPLE
-- dowload from: www.fpga.com.cn & www.pld.com.cn
library ieee;
use ieee.std_logic_1164.all;
ENTITY fsm I
带同步复位的状态机.txt
-- State Machine with Asynchronous Reset
-- dowload from: www.fpga.com.cn & www.pld.com.cn
library ieee;
use ieee.std_logic_1164.all;
entity stmch1 is
port(clk, in1, rst: in std_logic;
双2－4译码器：74139.txt
-- Dual 2-to-4 Decoder
-- A set of conditional signal assignments model a dual 2-to-4 decoder
-- uses 1993 std VHDL
-- download from: www.pld.com.cn & www.fpga.com.cn
library IEEE;
use IEEE.Std
带三态输出的8位d寄存器：74374.txt
-- Octal D-Type Register with 3-State Outputs
-- Simple model of an Octal D-type register with three-state outputs using two concurrent statements.
-- download from: www.fpga.com.cn & www.pld.com.cn