Principles of Operating System Design

Annoucements

• 11-Dec-2001: Below you will find a link to last year's final exam. Use it to aid your studying, and feel free to ask questions about it. I will try to post any compelling questions and answers.
• 8-Dec-2001: Thanks to Muigai Mwaura for pointing out that there are two executables that were distributed for project 3 that contain errors:
  • fs-test.vmx: Some of the instructions are followed by a number of spaces, and that causes the instruction fetches to become ``out of sync'' on those parts of the program. Merely remove those trailing spaces. There are other errors with this executable, so unless you're prepared to spend time debugging it, I would steer clear of it.
  • counting-sort-small.vmx: This file is different from the one used on project 2, but it shouldn't be. Simply revert to the copy that you used for project 2.
• 27-Nov-2001: You should have received your graded project 2. If you haven't, contact me posthaste. Also be sure to read the general comments on Project 2, which apply to just about everyone.
• 3-Nov-2001: A new version of forking-calc-fibonacci that correctly issues an MMAP system call is available. The following two files can be copied into your VM-executables directory, where the .vmx file can be executed, and the .commented file can be examined to help understand the program. Let me know if you have problems.

  /home/sfkaplan/cs39/forking-calc-fibonacci.vmx
  /home/sfkaplan/cs39/forking-calc-fibonacci.commented

• 25-Oct-2001: There is an error in the description of project 2. Specifically, the description of the TLB miss handler states that the MIE should be provided to the MMU by placing it in trap register 4. There are only 4 trap registers, numbered 0 to 3, so it is not possible to use trap register 4. The description should have indicated that the MIE should be placed in trap register 3. The description on the project 2 page has been updated accordingly.
• 16-Oct-2001: Project 1 has been graded and emailed to you. If you have not received an email that contains an HTML page of your solution with my comments, then let me know.
• 4-Oct-2001: Project 2 has been posted on the projects page. Dig in, and send questions as needed.
• 19-Sept-2001: Initially, the project-1 assignment page indicated that the group directories on the CS Suns were in /student/8/cs39. That is incorrect. The group directories are located in /student/projects/cs39.
• 14-Sept-2001: Class is cancelled today. If you have questions about material or want to talk about anything else, you should be able to find me in my office.
• 12-Sept-2001: Project 1 has been posted on the projects page, listed below. Get started with it!
• 21-Aug-2001: Be sure to check here regularly (that is, daily) to see if there are any important annoucements about the class, assignments, materials, etc.

Links to course pages

• Course information
• Projects
• CS 39 Fall 2000 Final Exam