LAPIC_SPURIOUS_VECTOR
lapic_writereg(LAPIC_SVR, LAPIC_SVR_ENABLE | LAPIC_SPURIOUS_VECTOR);
idt_allocmap[LAPIC_SPURIOUS_VECTOR] = 1;
idt_vec_set(LAPIC_SPURIOUS_VECTOR, Xintrspurious);
i82489_writereg(LAPIC_SVR, LAPIC_SVR_ENABLE | LAPIC_SPURIOUS_VECTOR);
idt_vec_set(LAPIC_SPURIOUS_VECTOR, Xintrspurious);