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<>最近的开发都是使用vivado，想把某个工程迁移到DE1-SOC中，由于许久不使用qaurtus了，生疏了，下载程序老是失败，记录以一下载的步骤。
开发板：DE1-SOC
芯片型号：5CSEMA5F31C6N
<>1、首先编写程序并编译成功，编译按钮如下：
<>2、绑定引脚
方法1：
方法二：用.txt文件导入首先新建一个.txt文本文件，在文件中键入引脚对应的关系，引脚名称与引脚号之间注意有一个西文逗号。//后面的字符是注释，系统自动忽略。
格式如下：
To, Location //FPGA时钟 s_rst_n, PIN_AB12 sclk, PIN_AF14 vga_hsync, PIN_B11
vga_rgb[23], PIN_J14 vga_rgb[22], PIN_G15 vga_rgb[21], PIN_F15 vga_rgb[20],
PIN_H14 vga_rgb[19], PIN_F14 vga_rgb[18], PIN_H13 vga_rgb[17], PIN_G13 vga_rgb[
16], PIN_B13 vga_rgb[15], PIN_E11 vga_rgb[14], PIN_F11 vga_rgb[13], PIN_G12
vga_rgb[12], PIN_G11 vga_rgb[11], PIN_G10 vga_rgb[10], PIN_H12 vga_rgb[9],
PIN_J10 vga_rgb[8], PIN_J9 vga_rgb[7], PIN_F13 vga_rgb[6], PIN_E12 vga_rgb[5],
PIN_D12 vga_rgb[4], PIN_C12 vga_rgb[3], PIN_B12 vga_rgb[2], PIN_E13 vga_rgb[1],
PIN_C13 vga_rgb[0], PIN_A13 vga_vsync, PIN_D11
点击ok即可。此时可以点击Assignments/Pin Planner进行正确与否的查看，确认正确无误。
<>3、下载程序：
显示下载成功。
<>注意：程序下载的步骤一定要按照要求来，不能直接点击“add file…"，加载.sof文件进行下载，这是不对的。否则会报错：Error
(209031): Device chain in Chain Description File does not match physical device
chain – expected 1 device(s) but found 2 device(s).
---晓凡 于桂林2022年4月9日书
