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890 B
890 B
Everything is now ready to test our hardware interrupts.
Timer
The timer is easy to configure. First we'll declare an init_timer() on cpu/timer.h and
implement it on cpu/timer.c. It is just a matter of computing the clock frequency and
sending the bytes to the appropriate ports.
se printa gibberish, pq? mirar primero si se arregla con un kprint_int
yo tenia una funcion que printaba enteros??!!! pero al rever. hacerla ahora bien y
en el proximo episodio limpiar codigo y crear una libc
Finally, go back to the kernel/kernel.c and do two things. Enable interrupts again
(very important!) and then initialize the timer interrupt.
Go make run and you'll see the clock ticking! Unfortunately we are not printing the correct values
on screen, so we'll go ahead to drivers/screen.c and add a new kprint_int() method, also declaring
it on drivers/screen.h