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78 Chapter 4
POST Code
Code Beeps For Boot Block in Flash ROM
E0h Initialize the chipset.
E1h Initialize the bridge.
E2h Initialize the CPU.
E3h Initialize the system timer.
E4h Initialize system I/O.
E5h Check force recovery boot.
E6h Checksum BIOS ROM.
E7h Go to BIOS.
E8h Set Huge Segment.
E9h Initialize Multi Processor.
EAh Initialize OEM special code.
EBh Initialize PIC and DMA.
ECh Initialize Memory type.
EDh Initialize Memory size.
EEh Shadow Boot Block.
EFh System memory test.
F0h Initialize interrupt vectors.
F1h Initialize Run Time Clock.
F2h Initialize video.
F3h Initialize System Management Mode.
F4h 1 Output one beep before boot.
F5h Boot to Mini DOS.
F6h Clear Huge Segment.
F7h Boot to Full DOS.