2Eh |
| . RAM failure on | |
|
| data bits of low byte of | |
|
| memory bus | |
2Fh | Enable cache before | ||
|
| system BIOS shadow | |
|
|
|
|
30h |
| . RAM failure on | |
|
| data bits of high byte of | |
|
| memory bus | |
Code |
| Beeps / Description | |
6Ah | Display external L2 cache | ||
|
| size | |
6Bh | Load custom defaults | ||
|
| (optional) | |
6Ch | Display | ||
|
| message | |
6Eh |
| Display possible high | |
|
| address for UMB recovery | |
70h |
| Display error messages | |
72h |
| Check for configuration | |
|
| errors | |
76h |
| Check for keyboard errors | |
7Ch | Set up hardware interrupt | ||
|
| vectors | |
7Eh |
| Initialize coprocessor if | |
|
| present | |
80h |
| Disable onboard Super I/O | |
|
| ports and IRQs | |
81h | Late POST device | ||
|
| initialization | |
82h |
| Detect and install external | |
|
| RS232 ports | |
83h | Configure | ||
|
| controllers | |
84h | Detect and install external | ||
|
| parallel ports | |
85h |
| Initialize | |
|
| PnP ISA devices | |
86h. |
| ||
|
| ports. | |
87h | Configure Motherboard | ||
|
| Devices | |
88h |
| Initialize BIOS Data Area | |
|
|
| |
89h |
| Enable | |
|
| Interrupts (NMIs) | |
8Ah |
| Initialize Extended BIOS | |
|
| Data Area | |
8Bh | Test and initialize PS/2 | ||
|
| mouse | |
8Ch |
| Initialize floppy controller | |
|
|
| |
8Fh |
| Determine number of ATA | |
|
| drives (optional) | |
90h |
| Initialize | |
|
| controllers | |
91h |
| Initialize | |
|
| controllers |
67h | Initialize Multi Processor |
| APIC |
|
|
68h | Enable external and CPU |
| caches |
69h | Setup System Management |
| Mode (SMM) area |
|
|
Code | Beeps / Description |
A2h | Check key lock |
|
|
A4h | Initialize Typematic rate |
|
|
A8h | Erase F2 prompt |
|
|
AAh | Scan for F2 key stroke |
|
|
ACh | Enter SETUP |
AEh | Clear Boot flag |
|
|
B0h | Check for errors |
B2h | POST done - prepare to |
| boot operating system |
B4h | One short beep before boot |
|
|
B5h | Terminate QuietBoot |
| (optional) |
B6h | Check password (optional) |
|
|
B9h | Prepare Boot |
|
|
BAh | Initialize DMI parameters |
|
|
BBh | Initialize PnP Option ROMs |
|
|
BCh | Clear parity checkers |
|
|
BDh | Display MultiBoot menu |
|
|
BEh | Clear screen (optional) |
|
|
BFh | Check virus and backup |
| reminders |
C0h | Try to boot with INT 19 |
|
|
C1h | Initialize POST Error |
| Manager (PEM) |
C2h | Initialize error logging |
|
|
C3h | Initialize error display |
| function |
C4h | Initialize system error |
| handler |
C5h | PnPnd dual CMOS |
| (optional) |
C6h | Initialize notebook docking |
| (optional) |
68
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