Ralf Brown is the creator of the most comprehensive interrupt list for MS-DOS, something you cannot afford to be without when coding in the MS-DOS environment. In MS-DOS, software interrupts are the mechanism of accessing both the DOS API, and interfacing with the BIOS, other TSR programs and drivers. In addition to covering documented and undocumented features available through software interrupts, there is also information about IO ports and other relevant stuff.

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