嵌入式系统中的fat32和fat16源代码（完全版）

threadx的线程、信号量、互斥量、消息队列、定时器、中断等操作。txe_ba.ctxe_bpc.ctxe_bpd.ctxe_br.ctxe_byta.ctxe_bytc.ctxe_bytd.ctxe_bytr.ctxe_efc.ctxe_efd.ctxe_efg.ctxe_efs.ctxe_qc.ctxe_qd.ctxe_qf.ctxe_qr.ctxe_qs.ctxe_sc.ctxe_sd.ctxe_sg.ctxe_sp.ctxe_taa.ctxe_tc.ctxe_tda.ctxe_tdel.ctxe_timd.ctxe_tmch.ctxe_tmcr.ctxe_tpch.ctxe_tra.ctxe_trel.ctxe_trpc.ctxe_tsa.ctxe_tt.ctxe_ttsc.ctx_api.htx_ba.ctx_blo.htx_bpc.ctx_bpcle.ctx_bpd.ctx_bpi.ctx_br.ctx_byt.htx_byta.ctx_bytc.ctx_bytcl.ctx_bytd.ctx_byti.ctx_bytr.ctx_byts.ctx_efc.ctx_efcle.ctx_efd.ctx_efg.ctx_efi.ctx_efs.ctx_el.ctx_el.htx_eve.htx_ghs.ctx_ghs.htx_ihl.ctx_ike.ctx_ill.68tx_

A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running computation, block while waiting for an event, or read files from the file system. Unlike kernel drivers, a user-space device driver can use other device drivers--that is, access the network, talk to a serial port, get interactive input from the user, pop up GUI windows, or read from disks. User-space drivers implemented using FUSD can be much easier to debug it is impossible for them to crash the machine, are easily traceable using tools such as gdb, and can be killed and restarted without rebooting even if they become corrupted. FUSD drivers don t have to be in C--Perl, Python, or any other language that knows how to read from and write to a file descriptor can work with FUSD. User-space drivers can be swapped out, whereas kernel drivers lock physical memory.-A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running comput

我自己写的一个实模式的操作系统，支持fat12文件系统和一个和shell整合到一起的简单的键盘驱动，目前正在实现pci总线驱动程序。以后将会转入到保护模式下开发-I wrote it myself a real mode of the operating system, support FAT12 file system and a shell and the integration with a simple keyboard-driven, are currently achieving pci bus driver. After that it will enter a protected mode development

DOS - ç ，它的内核也是FreeDOS的内核。并在此基础上进行了一定的修改，使其更加实用。 FreeDOS的是项目设计 提供替代到MS - DOS，PC的DOS的和DR - DOS的自由 。-DOS-C started in 1988 as an experiment in writing device drivers in C for Microsoft s MS-DOS. Both block and character device drivers were written, along with special C data structures to match the MS-DOS request packet. It was then recognized that using the same techniques, an operating system could be written that would take advantage of the C language features and would require much less time to develop than the traditional assembly language techniques. Although UNIX had proven this earlier, it was not tried with a traditional pc operating system. At this time, a minimal operating system using the device drivers written earlier along with a new 8086 interrupt API was developed. It was called XDOS and proved to be a functional operating system. This new operating system was used to develop booting techniques and a C library SDK was dev

国外开发的著名分布式操作系统mach的有关代码文章，很有参考价值-developed abroad MACH-distributed operating system code in the articles of great reference value

讲的很详细，希望对大家有用，一共有三部分-Talked about in great detail and hope for all of us, a total of three parts

这是一个强大的宾馆管理系统,包括宾馆人事、房间管理-The system of Hotel Management

利用银行家算法避免死锁。掌握银行家算法中的数据结构，算法的整个过程，并加深对银行家算法的理解-bankers algorithm used to avoid deadlock. Master bankers algorithm data structure, algorithm of the whole process, and deepen the understanding of Banker"s Algorithm

部分常用系统的引导程序-part of the guidance system used procedures

uCos II移植到C51 ，最小多任务适时系统-uCos II transplanted into C51, the smallest multi-tasking system in due course