Syncboot/arch/i386/sys_clock.c

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#include <kernel/utils.h>
#include <kernel/descriptor_tables.h>
#include <kernel/serial.h>
size_t timer_ticks = 0;
size_t flag = 0;
void timer_handler(registers_t* r) {
timer_ticks++;
if(timer_ticks % 18 == 0) {
if(++flag % 2 == 0) {
serial_print(0x3F8, "Tick.");
} else {
serial_print(0x3F8, "Tock.");
}
}
}
void timer_install() {
irq_install_handler(0, timer_handler);
}