can an os be wrritten in 6 months time

[NotTheCHEAT]

dood, that guy was probably gone as soon as he arrived- which is about 4 years ago- or did you notice? His post is from August 5, 2001. That's a LONG time ago, and I don't think you'll be able to help him any. He's probably GRADUATED by now!

[Brendan]

Hi,

dood, that guy was probably gone as soon as he arrived- which is about 4 years ago- or did you notice? His post is from August 5, 2001. That's a LONG time ago, and I don't think you'll be able to help him any. He's probably GRADUATED by now!

Doh! I didn't notice and thought the whole topic was started last night - it's unusual for such an old thread to re-appear ...


Cheers,

Brendan

[Tora OS]

You can infact write a pretty good OS in 6 or less months if you have enough skill and knowledge already.

I however, do not, and after working on an OS for 4 weeks, it could hardly tell time. (See topic: http://www.mega-tokyo.com/forum/index.p ... eadid=7975)

I also have other things to attend to now so i hardly work on my OS.

[Dex4u]

He sent me a post card today, to let you all know, his kernel prints
"Hello World!" , he said it took him a bit longer than he thought, but its all his own code and it been worth it ;D.

[NotTheCHEAT]

lol Dex4u - you need to become a comedian instead of an OS dever- you could probably make more money that way ;D

BTW Tora OS, the thread you linked to said CMOS uses BCD. AFAIK it can be programmed to use normal binary. Of course, knowing all this ahead of time will help (I won't make the same mistake, *hopefully* ::) )

[GLneo]

well a finish operating system doesn't exsist yet(unless MS windows is discontinued then all the hardware companes would stop adding stuff becouse 90% of computer users will never upgrade past the last windoze vertion but the question was "FULL" i consiter full to be able to run apps, then the apps could evolve not the OS

p.s. wend i first posted i tought it was new and had to EDIT

[Solar]

my OS is built from scratch and is made off the finest code >:(

GLneo, you have to admit your OS (judging from other threads here) is still lacking functionality some might consider to be essential (like paging), and you're pretty much stumped as to how to implement it correctly. Means, you haven't "written" your OS yet (you're still writing it), and "the finest code" is in the eye of the beholder anyway.

[GLneo]

i only said that becouse my OS is only 4 Months old and NotTheCHEAT said is must be "some fairly loserish code"

p.s. i have segmentation all ready but i need some paging

[Pype.Clicker]

<pype hesitates then decide that the post doesn't deserve being locked yet/>

Well, if i was supposed to be writing an OS (i mean, something that makes a user feels like he can do something with a computer) in 6 monthes _nowadays_, i guess i would:
- use GRUB
- forget about modularity, SMP, multithreading or whatever
- just use segments to load programs
- enforce .COM-like programs (flat format, pre-linked, no shared library of whatever sort)
- grab some opensource disk driver / FS driver (presumably FAT with ATA) and claim my OS has the same licensing requirements (yup, even 6 months are short for a correctly debugged anything else)
- build a small shell and text editor (or the user will *not* get the feeling it can use the stuff)
- get someone write a tetris game for it

As you can all see, this is fairly at millions lightyears of Clicker project ...

[NotTheCHEAT]

<notthecheat decides to post quickly, get a last word in, before the thread becomes locked... />

lol That wouldn't be a real OS that would be an open source protected mode DOS!!! And once again, it wouldn't be "made" or "written" it would be "ripped." You could call it an OS, but it wouldn't be worth using...

[bubach]

it would be BOS but written in C, and without the massive amount of time it have taken me just to learn how to program 32-bit assembly..

[Solar]

lol That wouldn't be a real OS that would be an open source protected mode DOS!!! And once again, it wouldn't be "made" or "written" it would be "ripped." You could call it an OS, but it wouldn't be worth using...

OK, so if the question is "can a useful OS for Protected Mode be written from scratch in six months by a single person, and be better than MS-DOS was", the answer is very, very clear.

No way.

[Dex4u]

I agree with Solar.
Also i would add a 32bit pmode Dos, would be more usefull, than another linux clone and the xbox OS is a 32bit Dos thats usefull.

[AR]

... xbox OS is a 32bit Dos thats usefull.

What's your source for that? I know that it's a Win2000 kernel that's been stripped down to the most simple direct interface (but with DirectX built in), all programs run in Ring0 on the xbox.

[Solar]

Depending on what you consider the defining attribute of DOS, that could well qualify as "32bit DOS": 32bit addressing, full hardware control.