Free small OS code?

  • Thread starter jainabhs
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I am presently learning operating system fundamentals.

Can anyone tell me m from where I can get free very small operating system code, in order to understand how it basically works?

It will be big help....(Please exclude Linux :))

Thanks in anticipation/
 

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  • #2
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jainabhs said:
I am presently learning operating system fundamentals.

Can anyone tell me m from where I can get free very small operating system code, in order to understand how it basically works?

It will be big help....(Please exclude Linux :))

Thanks in anticipation/
I remember in my OS course we used a simulator from Brown University i think which allowed you to load an OS's kernel on top. For that class we were using a kernel written by a professor at my university. The assignments involved coding portions of the kernel that were intentionally left out.

The Brown Simulator:
http://www.cs.brown.edu/software/brownsim/

The Kernel is here:
http://www.engr.uconn.edu/~kishori/Project/ucosStudents.tgz [Broken]
Though if i remeber it is password protected, and it since it has missing portions it wouldn't really function very well.
 
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  • #3
Hurkyl
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http://www.tinyos.net/

I've only heard about it; I haven't tried to use it. But this might be what you're looking for.
 
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  • #4
OS/161 is designed to teach undergraduate students about operating systems over four months. That's what they used to teach me in third-year. I honestly don't know if it's still good to learn from without a lecturer.

http://www.eecs.harvard.edu/syrah/os161/ [Broken]

It's inspired by, but not based off of, NachOS, which is also meant to be instructional.

http://www.cs.washington.edu/homes/tom/nachos/

They are sort of hard to set up in the first place (or were when I used them).

I've also heard of Xinu:

http://www.cs.purdue.edu/homes/dec/xsoft.html
 
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