TABLE H-44 BIOS POST Codes
POST Code | Description |
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9E | Enable hardware interrupts |
9F | Determine number of ATA and SCSI drives |
A0 | Set time of day |
A2 | Check key lock |
A4 | Initialize typematic rate |
A8 | Erase F2 prompt |
AAScan for F2 key stroke
AC | Enter setup |
AE | Clear boot flag |
B0 | Check for errors |
B1 | Inform RomPilot about the end of POST |
B2 | POST done - prepare to boot operating system |
B4 | One short beep |
B5 | Terminate QuietBoot (optional) |
B6 | Check password |
B7 | Initialize ACPI BIOS |
B9 | Prepare boot |
BA | Initialize DMI parameters |
BBInitialize PnP option ROMs
BC | Clear parity checkers |
BD | Display multiboot menu |
BE | Clear screen |
BF | Check virus and backup reminders |
C0 | Try to boot with interrupt 19 |
C1 | Initialize POST Error Manager (PEM) |
C2 | Initialize error logging |
C3 | Initialize error display function |
C4 | Initialize system error handler |
C5 | PnP dual CMOS (optional) |
C6 | Initialize notebook docking (optional) |
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Appendix H Service Processor Commands 191