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 |