参考《16位5级流水无cache实验CPU课程设计实验要求》文档及其VHDL代码，在理解其思想和方法的基础上，将其改造成8位的5级流水无cache的实验CPU，包括对指令系统、数据通路、各流水段模块、内存模块等方面的改造。利用VHDL语言编程实现，并在TEC-CA平台上进行仿真测试。为方便起见，后续16位5级流水无cache实验CPU简记为ExpCPU-16，而8位的则记为ExpCPU-8。
对于内存模块的改造，参考《计算机组成原理》课程综合实验的方法，独立设计一块8位的RAM。
（1）利用TEC-CA平台上的16位RAM来存放8位的指令和数据；
（2）实现一条JRS指令，以便在符号标志位S=1时跳转。需要改写ID段的控制信息，并改写IF段；
（3）实现一条CMPJ DR,SR,offset指令，当比较的两个数相等时，跳转到目标地址PC+1+offset；
（4）可以探索从外部输入指令，而不是初始化时将指令“写死”在RAM中；
（5）此5段流水模块之间，并没有明显地加上流水寄存器，可以考虑在不同模块间加上流水寄存器；
（6）探索5段流水带cache的CPU的设计。
2019-12-21 20:34:43
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2019年华南师范大学925数据结构真题，师兄回忆版。包括选择题、填空题、判断题、代码填空题、简答题和算法题。
2019-12-21 20:34:27
2.55MB
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2019年华南师范大学计算机学院复试，复试的题目分为两部分：C++部分和数据库部分。C++两题，第一题看程序输出结果，第二题程序设计题（一共四题）。数据库有选择题、简答题、分析题和一个ER图的题目。建议用Typora打开md文件。
2019-12-21 20:34:26
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Requirements
1． Simulate a Unix file system on your Windows Platform
2． Understand the file system on Unix system, and the usage of i-nodes
3． Implement the function of sub-directory
4． The task needs to be completed using C++ or C
5．
Tasks/Functionalities
The following functions are required in your file system:
1． Allocate 16MB space in memory as the storage for your file system. The space is divided as
blocks with block size 1KB
Assume block address length is 32-bit;
Design the information contained in i-node
The i-node should support up to 10 direct block addresses
The i-node should support at least one indirect block address
2． The fist block is used for storing the i-node for the root directory(/). While your program is
lunched, two directories (/dir1 and / dir1/dir2) should be created, and also two files need to be
written as /dir1/file1 and /dir1/dir2/file2 (5 marks)
3． File 1 and 2 contain the message of “This is file 1.” and “This is file2”.
4． Following commands should be supported in your system：
a) Create a file：createFile fileName fileSize (10 marks)
i.e.：createFile /dir1/myFile 1024 (in bytes)
if fileSiz > max file size, print out an error message.
The file content is filled up with filename + repeated digits from 0 - 9
i.e.: “myFile012345678901234567890123….”
b) Delete a file：deleteFile filename (10 marks)
i.e.：deleteFile /dir1/myFile
c) Create a directory：createDir (5 marks)
i.e.：createDir /dir1/sub1
d) Delete a directory：deleteDir (5 marks)
i.e.: deleteDir /dir1/sub1 （The current working directory is not allowed to be
deleted）
e) Change current working direcotry：changeDir (5 marks)
i.e.: changeDir /dir2
f) List all the files and sub-directories under current working directory：dir (5 marks)
You also need to list at least two file attributes. (i.e. file size, time created, etc.)
g) Copy a file : cp (5 marks)
i.e.: file1 file2
h) Display the usage of storage space：sum (10 marks)
Display the usage of the 16MB
2019-12-21 20:28:55
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1．在linux中实现一个命令执行程序doit，它执行命令行参数中的命令，之后统计
1）命令执行占用的CPU时间(包括用户态和系统态时间，以毫秒为单位)，
2）命令执行的时间，
3）进程被抢占的次数，
4）进程主动放弃CPU的次数，
5）进程执行过程中发生缺页的次数
2019-12-21 19:59:40
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