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Appendix B BIOS POST Codes
B-7
TABLE B-2
shows the POST codes for the boot block in Flash ROM.
TABLE B-2
Boot Block in Flash ROM
Post Code Description
E0 Initialize the chipset
E1 Initialize the bridge
E2 Initialize the CPU
E3 Initialize the system timer
E4 Initialize system I/O
E5 Check force recovery boot
E6 Checksum BIOS ROM
E7 Go to BIOS
E8 Set Huge Segment
E9 Initialize Multi Processor
EA Initialize OEM special code
EB Initialize PIC and DMA
EC Initialize Memory type
ED Initialize Memory size
EE Shadow Boot Block
EF System memory test
F0 Initialize interrupt vectors
F1 Initialize Run Time Clock
F2 Initialize video
F3 Initialize System Management Manager
F4 Output one beep
F5 Clear Huge Segment
F6 Boot to mini DOS
F7 Boot to Full DOS