| 02 | Flag test |
| 04 | Register test |
| 06 | System hardware initialization |
| 08 | Initialize chipset registers |
| 0A | BIOS ROM checksum |
| 0C | DMA page register test |
| 0E | 8254 programmable interrupt timer test |
| 10 | 8254 programmable interrupt timer initialization |
| 12 | 8237 DMA controller test |
| 14 | 8237 DMA controller initialization |
| 16 | Initialize 8259 programmable interrupt controller; reset math coprocessor |
| 18 | 8259 programmable interrupt controller test |
| 1A | Memory refresh test |
| 1C | Base 64K RAM address test |
| 1E | Base 64K RAM memory test |
| 20 | Base 64K RAM test for 386 based systems |
| 22 | 8742 keyboard controller self test |
| 24 | MC 146818 CMOS test |
| 26 | Start first protected mode test |
| 28 | Memory sizing test |
| 2A | Autosize memory chips |
| 2C | Chip interleave enable test |
| 2E | First protected mode test exit |
| 30 | Unexpected shutdown |
| 32 | System board memory size |
| 34 | Relocate shadow RAM if configured |
| 36 | Configure EMS system |
| 38 | Configure wait states |
| 3A | Retest 64K RAM base memory |
| 3C | CPU speed calculation |
| 3E | Get switches from 8042 keyboard controller |
| 40 | Configure CPU speed |
| 42 | Initialize interrupt vectors |
| 44 | Verify video configuration |
| 46 | Initialize video system |
| 48 | Test unexpected interrupts |
| 4A | Start second protected mode test |
| 4C | Verify LDT protected mode instruction |
| 4E | Verify TR protected mode instruction |
| 50 | Verify LSL protected mode instruction |
| 52 | Verify LAR protected mode instruction |
| 54 | Verify VERR protected mode instruction |
| 56 | Unexpected exception |
| 58 | Address line A20 test |
| 5A | Keyboard ready test |
| 5C | Determine AT or XT keyboard |
| 5E | Start third protected mode test |
| 60 | Base memory test |
| 62 | Base memory address test |
| 64 | Shadow memory test |
| 66 | Extended memory test |
| 68 | Extended address test |
| 6A | Determine memory size |
| 6C | Display error messages |
| 6E | Copy BIOS to shadow memory |
| 70 | 8254 programmable interrupt timer clock test |
| 72 | MC 146818 real time clock test |
| 74 | Keyboard stuck key test |
| 76 | Initialize hardware interrupt vectors |
| 78 | Math coprocessor test |
| 7A | Determine serial ports available |
| 7C | Determine parallel ports available |
| 7E | Initialize BIOS data area |
| 80 | Determine floppy and hard disk controller |
| 82 | Floppy disk test |
| 84 | Hard disk test |
| 86 | External ROM scan |
| 88 | System key lock test |
| 8A | Wait for <F1> key pressed |
| 8C | Final system initialization |
| 8E | Interrupt 19 boot loader |
| B0 | Unexpected interrupt before or after boot up |