The passionate programmer ?

21 Jun

I just finished reading the book the passionate programmer by Chad Fowler ( No! , he is not related to Martin Fowler!) .  Although i do not necessarily agree with all his views. Here are the few take away points for me.

 

  • Try to understand business domain which you are working for ! – I am a typical techie who considered business meetings to be a complete waste of time, from now on i will at least make an effort to understand it better
  • Do not stagnate keep learning something new everyday!
  • “Whoever can be trusted with very little can also be trusted with much, and whoever is dishonest with very little will also be dishonest with much.” – Even if the job is boring and trivial try to do a good job instead of avoiding  or procrastinating.  I was very immature at my first job at Microsoft – this is a key thing!.   Employers do not want a super hero, but some one who can execute well and is pleasant to others.
  • Take some more risks! 

How do i actually write an operating system ?

23 Feb

This my answer to quora query. I thought it is good to archive it here.

 

How do I actually start writing an Operating System?

I want to know the baby steps to be followed. I have read all the introductory articles on http://wiki.osdev.org.
I want to know how do I actually start writing code which can be executed independently of any Operating System. How do I write the assembly code which will enable my machine to execute it directly? What all do I need to learn for that? Also, what are the prerequisites and what are the tools needed for writing an Operating System?
I have read the theoretical concepts of Operating Systems and I have also gone through the Linux source code but I couldn’t understand much.
was at your place initially therefore I hope I can help. First thing you want to do is finalize on what you want to do. Most of the operating system tutorials start with a simple boot loader.  Read the intel manuals and learn them well . I believe it is easier to start with a real mode operating system because bios does lot of work for you .
Answer :
Yes you should have a moderate knowledge of x86 assembly to write an os .

Resoures for Learning x86 Assembly

EMU8086 is one of the easiest way to get started with x86 assembly it comes with an os development tutorial too.

1) IBM PC assembly langage programming Peter Abel: IBM PC Assembly Language and Programming: Peter Abel: 9780137566105: Amazon.com: Books
2) Assembly language step by step  : http://www.amazon.com/Assembly-Language … 0471578142
3) Assembly Language Master Book : http://www.amazon.com/Assembly-Language … 0471578142
4)Art of Assembly : Art of Assembly Language Programming and HLA by Randall Hyde
5) emu8086 : EMU8086
6) ketmans assembly tutorial : BT’s free web hosting service is now closed
7) Buch of tutorials from programmers My Bible
8 ) Knuths book  – Art of computer programming – volume 1  Fundamental Algorithms — Excellent
9) PC Assembly Language Programming : PC Assembly Language by Paul A. Carter
10 ) Programming from the ground up : Programming From The Ground Up
11) Advanced 386 programming Techniques –  James Turley

Interesting Projects and Pages

Mike os is a good starting place.

simple x86 assembly language operating system

I am compiling a set of resources that might help you on the way.

Operating System Engineering
Bona Fide OS Developer
Pintos Projects: Introduction
JamesM’s kernel development tutorials
The Operating System Resource Center
BrokenThorn Entertainment
Skelix OS Tutorial Content

Learning the linux kernel is another matter, it might be easier to read historic linux kernels for a newbie than the latest one. You might find this interesting

Linux Kernel 0.01 commentary

Hope something in my rambling is of some use to you 🙂

Djembe

15 Feb

I learned about this African musical instrument ( from Mali ) from udemy

 

UC-ZUVFS1G8

 

 

ADHD

15 Feb

UC-82LZ4BW8I just completed this course, it was good

GNU plot

29 Jan

GNU plot is very helpful for plotting data and quite powerful too. After some searching I found the book GNU plot in action.

I fount this website very useful for surface plots :

http://lowrank.net/gnuplot/plot3d2-e.html

This is another useful reference :

http://www.phyast.pitt.edu/~zov1/gnuplot/html/intro.html

This always helps : http://www.gnuplot.info/.

 

Hint:  I think its a good idea to use awk to combine different columns. etc

 

Synfig Animation

10 Dec

I learned to do cut out animations in Synfig. I am all set to make animations using Synfig.

UC-GIBUC2M9

 

I will finally make the series – The Sandman Chronicles. The idea is simple just like any Indian movie the main story remains the same – the trick is the come up with interesting variations. The world is tormented by a mega cruel villain, all the the super heros in the world put together could not save world. Finally it’s upto Sandman ( the last super hero to save the world), Sandman does something really silly and saves the world.

Just bored :)

20 Sep

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