WHU OS

WHU-OS

Wuhan University's operating system design course homework: Reproducing an operating system kernel

Introduction

Reference: 30-day homemade operating system

All the processes of this experiment and the problems encountered in the middle, the principles and solutions are recorded here. The tasks and code content of each day are updated in the corresponding folder. The corresponding directory is only the final code file that was completed on the day.

Compilation and use

Each folder content can be run directly without any additional installation, and run under the Windows operating system

Run the program on day {DAY}

make -C day{DAY}

For example, run on day 10

make -C day10

Clear the generated file

make -C day{DAY} clean

QEMU will have errors in some operating system status simulation in my computer, and there will be an exception interruption on day10 and day11 to exit.

The input of the day7 keyboard is stuck, and the input of the letters in day14 and later is repeated and cannot be interrupted. This is due to the Chinese input method. Switching to the English input method when entering can solve it, but this situation does not occur on my roommate and classmate's computer. It does not appear in the WIN10 operating system of my VMWARE virtual machine, so this error cannot be reproduced. If you encounter this error, you can compile the img floppy disk image file and import the VMWARE virtual machine. See the blog of day1 for related usage methods.

Stage display

Please switch to English input method when entering the keyboard, otherwise abnormal situations will occur.

• day1

  Basic startup area

• day10

  Input and output buffer, GDT IDT, interrupt processing, memory management, graphics drawing, mouse input, overlay processing

• day20

  Window optimization, timer, interrupt processing optimization, multi-task process scheduling, command line window, keyboard input optimization, application execution, API

  Support dir mem type cls hello directive

• day30

  Basic use

  • Tab switch window
  • When selecting a window, click x with the mouse or press enter to close the window.
  • shift + F1 force closing window
  • shift + F2 creates a new console console
  • Mouse click to switch window
  • - and = These two keys cannot be combined with shift, and a numeric keypad is required

  Command line related commands

  • dir : View directory file

  • mem: View memory and remaining

  • cls: Clear console content

  • ncst : Use ncst + the following command to run the program without affecting the input of the current console

  • star1: Draw a little (star)

  • stars: draw a bunch of dots

  • walk: Move the cursor (up, down, left and right)

  • color, color2: two color discs

  • notrec: a non-rec window

  • bball: a circle drawn by a line

  • invader: an alien masturbation app

  • langmode + {MODE} : Language mode switching, langmode 0 is English mode, 1 is Japanese mode, and 2 is Japanese EUC mode

  • type + {FILENAME} : View the file content (note that langmode, langmode will appear in garbled code if it is incorrect, and don’t try to view some strange format pictures)

  • tview + {FILENAME} : Create a new text box to view the file content

  • mmmlplay + {FILENAME} : Open the music player

    mmlplay daigo.mml

  • gview + {FILENAME} : Preview the picture

    gview night.bmp
    gview fujisan.jpg

  • calc + {FORMAT} : Calculator

    My own keyboard input seems to be a little problem, a bit strange

  The following figure is a demonstration of some functions

About the Documentation

Course experiment related information