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Hello again,

I'm ready to create such things like IRQ's, multitasking,Timer,PIC and device drivers creating...

Could you turn me on the right way, I would be glad.

And can I create device drivers in pmode "port to port"?

Thanks ;D

oh yeah u can do almost anything while u r in pmode.
for irq's u need to setup ur IDT for that u need to remap ur PIC.. so it all comes together
these links might help u
http://osdev.neopages.net/tutorials/irqs.php
http://osdev.neopages.net/tutorials/pic.php
http://osdev.neopages.net/tutorials/interrupts.1.php
hope it helps

for the multitasking, i suggest you the reading of "implementing multitasking for a beginner" which holds a lot of valuable info ...