Help for creating a mini OS

[abhishekjha10@gmail.com]

Hello everybody,
I am trying to create a mini OS in C. Can you help me with some
helpful links and sites.
Thankyou.
Abhishek Jha.

[Robert Gamble]

Re: Help for creating a mini OS

On Thu, 26 May 2005 03:42:53 -0700, abhishekjha10 wrote:
[color=blue]
> Hello everybody,
> I am trying to create a mini OS in C. Can you help me with some
> helpful links and sites.
> Thankyou.
> Abhishek Jha.[/color]

No, this is a newgroup about Standard C, not a web-search outsourcing
facility. Google is your friend, if somewhere in your research you come
up with a question about Standard C, feel free to come back and ask.

Rob Gamble

[vib]

Re: Help for creating a mini OS

Hi there,

This is not the right forum. As I am also in the middle of creating my
own OS, embedded one, so you may email me at vibnwis@yahoo.c om if you
are keen.

Thanks

[Emmanuel Delahaye]

Re: Help for creating a mini OS

abhishekjha10@g mail.com wrote on 26/05/05 :[color=blue]
> Hello everybody,
> I am trying to create a mini OS in C. Can you help me with some
> helpful links and sites.[/color]

You cant' write an OS from scratch in standard C. You need hardware
resources ans a lot of extensions from your compiler. gcc is a must for
the purpose.

--
Emmanuel
The C-FAQ: http://www.eskimo.com/~scs/C-faq/faq.html
The C-library: http://www.dinkumware.com/refxc.html

I once asked an expert COBOL programmer, how to
declare local variables in COBOL, the reply was:
"what is a local variable?"

[Walter Roberson]

Re: Help for creating a mini OS

In article <mn.e4a87d5581e e843a.15512@YOU RBRAnoos.fr>,
Emmanuel Delahaye <emdel@YOURBRAn oos.fr> wrote:[color=blue]
>You cant' write an OS from scratch in standard C. You need hardware
>resources ans a lot of extensions from your compiler.[/color]

Wouldn't that depend on what you want the OS to *do* ?

If your OS is co-operative tasking or single-threaded, then
you can implement a complete filesystem within a single binary file
and you can give the illusion of doing several things at once.
Loading and executing programs, and processes and BIOS calls can be done
by working with a "virtual machine" instead of native machine code.
Yes, you'd be restricted to a single text-only "console", but
computing history was built on the back of ASR-33's..
--
Beware of bugs in the above code; I have only proved it correct,
not tried it. -- Donald Knuth

[Malcolm]

Re: Help for creating a mini OS

<abhishekjha10@ gmail.com> wrote[color=blue]
>
> Hello everybody,
> I am trying to create a mini OS in C. Can you help me with some
> helpful links and sites.
>[/color]
comp.programmin g is a better ng for this subject.

C is a good language for writing operating systems because it is extremely
effiicient and interfaces well with both assembler and higher-level
applications languages.
I couldn't really advise you about how to go about it. Personally I would
probably get a few of the basic hardware devices working (without booting
the current OS, if there is one). If you have an output device capable of
handling characters then a good start is to send "hello world" to it. If you
only have a memory-mapped raster then start by printing pixels, and then
build up using a basic 8*8 font.
Once you have some output, you can get steadily more ambitious, adding input
devices like keyboards, disk drives, and so on.
Finally you can run user-level applications, at which stage you have a
operating system.