The x86 supports vectored interrupts, too (at least in the same sense
the Z80 does.) There are 256 interrupt vectors possible, 32 of which
are reserved (although that didn't keep IBM from foolishly use them
rather than the 224 that weren't...) However, the PIC architecture in
the PC doesn't use this -- it lets the vectors be generated by the
PIC; the standard dual PIC allows only for 15 vectors and the APIC
something like 24, and it's all controlled by which input line gets
pulled.
Sad, isn't it?
-hpa
-- <hpa@transmeta.com> at work, <hpa@zytor.com> in private! "Unix gives you enough rope to shoot yourself in the foot." http://www.zytor.com/~hpa/puzzle.txt <amsp@zytor.com> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/