| POST | | 28H | Safely entered protected mode |
| POST CODE | DESCRIPTION | 29H | Completely RAM test |
| 10H | Signals that RESEt occurred | 2AH | Successful exit from protected mode |
| 11H | Turn off FASTA20 for POST | 2BH | Setup shadow |
| 12H | Signal power on reset | 2CH | Going to initialize video |
| 13H | Initialize the chipset | 2DH | Search for monochrome adapter |
| 14H | Search for ISA busVGA adapter | 2EH | Search for color adapter |
| 15H | Reset counter/time 1 | 2FH | Sign-on messages displayed |
| 16H | User register configuration
through CMOS | 30H | OEM init of keyboard controller |
| 17H | Size system memory | 31H | Test if keyboard present |
| 18H | Dispatch to RAM test | 32H | Test keyboard interrupt |