ARM9 | Linux

本实验利用8253做定时器，用定时器输出的脉冲控制8259产生中断 在8259中断处理程序中，对时、分、秒进行计数，在等待中断的循 环中用LED显示时间。 8253用定时器/计数器1，8253片选接CS4，地址为0C000H。8253时钟 源CLK1接分频电路的F/64输出。分频器的Fin接4MHz时钟。8253的 GATE1接VCC。 8259中断INT0接8253的OUT1，片选接CS5，地址为0D000H。 显示电路的KEY/LED CS 接CS0，地址为08000H。-In this study, the use of 8253 to do the timer, using timer pulse output control 8259 generates an interrupt in 8259 interrupt handler, for hours, minutes and seconds count, waiting for interruption through ring using LED display time. 8253 with the timer/counter 1,8253 chip select access CS4, address 0C000H. 8253 clock source CLK1 of the F/64 then divider circuit output. Fin then 4MHz clock divider. 8253" s GATE1 then VCC. 8259 interrupt INT0 then 8253" s OUT1, chip select access CS5, address 0D000H. Display circuit of the KEY/LED CS access CS0, address 08000H.

PC-Lint是一个历史悠久，功能异常强劲的静态代码检测工具。它的使用历史可以追溯到计算机编程的远古时代（30多年以前）。经过这么多年的发展，它不但能够监测出许多语法逻辑上的隐患，而且也能够有效地帮你提出许多程序在空间利用、运行效率上的改进点，在很多专业级的软件公司，比如Microsoft， PC-Lint检查无错误无警告是代码首先要过的第一关，我个人觉得，对于小公司和个人开发而言，PC-Lint也非常重要，因为基于开发成本考虑，小公司和个人往往不能拿出很多很全面的测试，这时候，PC-Lint的强劲功能可以很好地提高软件的质量。--PC-Lint is an old and very powerful static code checking tool. After more than 30 years development, it could not only detect potential bugs in the codes, but also help improving the space usage of your programs. In some big software companies, like Microsoft, the first requirement of the code is to pass PC-Lint. For small companies or personal developers, PC-Lint could also be very helpful.

系统学习Linux的11点建议，经常在一些论坛上看到人问如何学习Linux，个人感觉这些建议可以让新手少走很多弯路。-learning system Linux 11:00, in some forums often see people ask how to study Linux, personal feeling these recommendations can take fewer newcomers so many detours.

这段代码将显示一个单独的字符，将单独运行，它将提取一个字符。从存储字符串

嵌入式C和C++编程的电子书，很经典，不可多得的编程资料-Embedded C and C++ programming book, it is classic, rare programming information

Use PIC18f4550 + MMC and FAT16 with the mikroC, this code is a sample how to use the mmc cards with microcontrollers PIC18f-Use PIC18f4550+ MMC and FAT16 with the mikroC, this code is a sample how to use the mmc cards with microcontrollers PIC18f

mega8单片机产生spwm信号的例子，做正弦波变频可以参考。-mega8 SCM signal generated spwm example, do sine wave inverter for reference.

VGA显示的FPGA实现-VGA display FPGA

USB2.0（ISP1581MPEG）MPEG程序源代码--MPEG program source code for USB2.0 (ISP1581MPEG).

复旦大学Nios的经典教程，主要包括FPGA的配置等-Classic tutorial University Nios, including FPGA configuration, etc.