OSDev.org

Can you make a complete Kernel out of C?
and
Can you make a complete Boot Code out of C?

With inline assembly? Probably not.
Without? No.

Even inline assembly would be pretty hard. Remember, the entire code MUST fit into 512 bytes. That 512 bytes has to switch from 16 to 32 bits, which means seperating and linking the two seperate parts. It must load floppy sectors (or hard drive etc.).

Most C programs start at ~1K and go up, so I'd gander at: Impossible.

There is NO way to make an OS without ASM.

OK, Thanks for your time.

if u will use grub , i think u can

Hi,

HardEnough wrote: if u will use grub , i think u can

I doubt you can. You still need at least some inline assembly. like 'in' and 'out'. You still need the mov command, esp. for CR0,CR1, etc. Same for 'int','lidt',name it.

So my conclusion: it's IMPOSSIBLE to write an OS without at least some (inline) assembly. (even it's booted using GRUB)

DennisCGc.

he can also use oskit

Hi,

HardEnough wrote:he can also use oskit

How much inline assembly is in OSkit?

Why not just use the Linux kernel and device drivers (you wouldn't need C or assembly then - you could do the rest of the OS in PERL! ).


Cheers,

Brendan

Yes, using oskit for EVERYTHING kind of defeats the purpose....

>How much inline assembly is in OSkit?

>Why not just use the Linux kernel and device drivers (you wouldn't >need C or assembly then - you could do the rest of the OS in PERL! ).

Remember we are talking about the possibility. that's the point he can just use grub+oskit.

Didn't say he couldn't, just that it would kind-of defeat the purpose of making one in the first place ;D