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Hello guys,
I just started OSdev and I'm building a very simple OS, but I cannot set up the PIC and the IRQ in protected mode.
I read the osdev wiki and I found something about the PIC initialisation, but nothing about the IRQ.
I admit I am pretty a noob, but I don't found any code about the IRQ init.
Could someone gimme a hand please?
Thank you.

For starters, can you disable all interrupts in the PIC? That will prevent any IRQs from firing until you have set up interrupt handler code. https://wiki.osdev.org/8259_PIC#Disabling

Please share any code you have, and we can give you more detailed info.

IRQs are Interrupt ReQuests. Initialization is different for every device that can generate IRQs. So, which device do you want to initialize to generate IRQs?

IRQ are set up through IDT table. you simply build IDT table in memory, and point to it by assembly command lidt. some info about this is on https://wiki.osdev.org/Interrupts_tutorial or https://wiki.osdev.org/Interrupt_Descriptor_Table.

KineticManiac, we're attempting to be welcoming here, check uruseiyatsura's post history for the context.

What’s your point?

It was an eminently sensible comment.

Here is a reasonably good tutorial that you may find useful:
http://www.osdever.net/bkerndev/Docs/isrs.htm

Edit:
Forgot to add this:
https://wiki.osdev.org/Bran%27s_Kernel_ ... Known_Bugs