Code | Beeps | POST Routine Description |
|
|
|
83h |
| Configure |
84h |
| Detect and install external parallel ports |
|
|
|
85h |
| Initialize |
|
|
|
86h |
| |
|
|
|
87h |
| Configure Motheboard Configurable Devices (optional) |
|
|
|
88h |
| Initialize BIOS Data Area |
|
|
|
89h |
| Enable |
|
|
|
8Ah |
| Initialize Extended BIOS Data Area |
|
|
|
8Bh |
| Test and initialize PS/2 mouse |
|
|
|
8Ch |
| Initialize floppy controller |
|
|
|
| Code | Beeps | POST Routine Description |
|
|
|
|
|
|
| 8Fh |
| Determine number of ATA drives (optional) |
|
|
|
|
|
|
| 90h |
| Initialize |
|
|
|
|
|
|
| 91h |
| Initialize |
|
|
|
|
|
|
| 92h |
| Jump to UserPatch2 |
|
|
|
|
|
|
| 93h |
| Build MPTABLE for |
|
|
|
|
|
|
| 95h |
| Install CD ROM for boot |
|
|
|
|
|
|
| 96h |
| Clear huge ES segment register |
|
|
|
|
|
|
| 97h |
| Fixup Multi Processor table |
|
|
|
|
|
|
| 98h | Search for option ROMs. One long, two short beeps on checksum failure |
| |
|
|
|
|
|
| 99h |
| Check for SMART Drive (optional) |
|
|
|
|
|
|
| 9Ah |
| Shadow option ROMs |
|
|
|
|
|
|
| 9Ch |
| Set up Power Management |
|
|
|
|
|
|
| 9Dh |
| Initialize security engine (optional) |
|
|
|
|
|
|
| 9Eh |
| Enable hardware interrupts |
|
|
|
|
|
|
| 9Fh |
| Determine number of ATA and SCSI drives |
|
|
|
|
|
|
| A0h |
| Set time of day |
|
|
|
|
|
|
| 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 | 1 | 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 |
|
|
|
|
|
|
|
|
|
|
|
Chapter 4 | 163 |
