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FPGA 的代码
加法器源程序.v
// download from: www.pld.com.cn & www.fpga.com.cn
module counter (count, clk, reset);
output [7:0] count;
input clk, reset;
reg [7:0] count;
parameter tpd_clk_to_count = 1;
parameter
最高优先级编码器.txt
-- Highest Priority Encoder
-- download from www.pld.com.cn & www.fpga.com.cn
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
entity priority is
port(I : in bit_vector(7 downto 0); --input
各种功能的计数器.vhd
-- MAX+plus II VHDL Example
-- Efficient Counter Inference
-- Copyright (c) 1994 Altera Corporation
-- download from:www.pld.com.cn & www.fpga.com.cn
Library IEEE ;
use IEEE.std_logic_1164.all
一个简单的状态机.vhd
-- MAX+plus II VHDL Example
-- State Machine
-- Copyright (c) 1994 Altera Corporation
-- download from: www.pld.com.cn & www.fpga.com.cn
Library IEEE ;
use IEEE.std_logic_1164.all ;
ENTIT
带load、clr等功能的寄存器.vhd
-- Register Inference
-- Download from: http://www.fpga.com.cn
Library IEEE ;
use IEEE.std_logic_1164.all ;
ENTITY reginf IS
PORT
(
d, clk, clr, pre, load, data : IN BIT;
q1, q2,
加法器源程序.v
// download from: www.pld.com.cn & www.fpga.com.cn
module counter (count, clk, reset);
output [7:0] count;
input clk, reset;
reg [7:0] count;
parameter tpd_clk_to_count = 1;
parameter
async_transmitter.v
// RS-232 TX module
// (c) fpga4fun.com KNJN LLC - 2003, 2004, 2005, 2006
//`define DEBUG // in DEBUG mode, we output one bit per clock cycle (useful for faster simulations)
module async_tran
async_transmitter.v
// RS-232 TX module
// (c) fpga4fun.com KNJN LLC - 2003, 2004, 2005, 2006
`define DEBUG // in DEBUG mode, we output one bit per clock cycle (useful for faster simulations)
module async_transm
最高优先级编码器.txt
-- Highest Priority Encoder
-- download from www.pld.com.cn & www.fpga.com.cn
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
entity priority is
port(I : in bit_vector(7 downto 0); --input
各种功能的计数器.vhd
-- MAX+plus II VHDL Example
-- Efficient Counter Inference
-- Copyright (c) 1994 Altera Corporation
-- download from:www.pld.com.cn & www.fpga.com.cn
Library IEEE ;
use IEEE.std_logic_1164.all