Interrupts: Difference between revisions
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int 80h |
int 80h |
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Non-IRQ interrupts are often used for APIs, or sets of functions that can be called by applications. The |
Non-IRQ interrupts are often used for APIs, or sets of functions that can be called by applications. The Unix API is 0x80, or 80h and the DOS API is 0x21, or 21h. These are called software interrupts. Note that the first 32 (0-31) interrupts are reserved and used by the CPU, as exceptions, so don't use those for APIs or IRQs. |
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==From the keyboard's perspective== |
==From the keyboard's perspective== |
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