os.hacker64

Hello, Hope this is the right place to post, I am a student and want to create an OS like DOS just for practice, I know functions, arrays, pinters, structures and file handling but dont know how to start writing an OS, please help me. Regards.

When you do something like [code] cmp eax,ebx ja start;jump if above start: [/code] Jump if above jumps if eax is greater or if ebx is greater?

How does gcc order bitfields on a little-endian machine? Is the first entry the most significant bit or what?

I have undergone a basic course in C Programming and I wish to enrich my programming skills by learning how to code for graphics in C and my main interest is to learn to write virus and so on. Could you please guide me what books should I need to …

I realize that kprint takes a pointer as a parameter. I don't understand how it loops through each character when you do something like kprint("HELLO WORLD"); Can you really just increment *s to get to the next char like: s++; char c = *s;