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Editorial Team
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Asked: 2026-05-20T13:44:05+00:00

I can’t seem to find a good reference for NASM x86 interrupts on a

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I can’t seem to find a good reference for NASM x86 interrupts on a Linux system. For example, what is int 0x60 and how is it different from int 0x80?

Is there a manual somewhere which will list all the interrupt numbers which can be used in conjunction with the int instruction?

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  1. Editorial Team

    Linux only uses int 0x80 (or sysenter or syscall), with a call number in EAX. Check unistd_32.h, and see

    For 16-bit x86, there’s a long history of different interrupt numbers for different groups of interfaces, often with a call number in just AH.

    There is the Ralph Brown’s… It’s soo many years…

    Instead of looking for a grain of sand in the desert, you could ask directions to Wiki:

    BIOS

    DOS

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