BIOS Interrupt Call
BIOS interrupt calls are a facility that DOS programs and some other software, such as boot loaders, use to invoke the facilities of the Basic Input/Output System on IBM PC compatible computers. Some operating systems also use the BIOS to probe and initialize hardware resources during their early stages of booting.
Read more about BIOS Interrupt Call: Invoking An Interrupt, Interrupt Table, DOS Hooks, INT 18h: Execute BASIC
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