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E9h Initialize Multi Processor F1h Initialize Run Time Clock
EAh Initialize OEM special code F2h Initialize video
EBh Initialize PIC and DMA F3h Initialize System Management
Mode
ECh Initialize Memory type F4h Output one beep before boot
EDh Initialize Memory size F5h Boot to Mini DOS
EEh Shadow Boot Block F6h Clear Huge Segment
EFh System memory test F7h Boot to Full DOS
F0h Initialize interrupt vectors