We now use the APIC. The first APICs had only 16 interrupts, but with the introduction of 82093AA in 1996 they now have 24 interrupts separating the ISA and PCI

We now use the APIC. The first APICs had only 16 interrupts, but with the introduction of 82093AA in 1996 they now have 24 interrupts separating the ISA and PCI ones completely.