Table 10-2. Port-80 Codes (continued)
Port 80 Code | Reason |
|
|
40 | Set Initial CPU speed new |
|
|
42 | Initialize interrupt vectors |
|
|
44 | Initialize BIOS interrupts |
|
|
46 | Check ROM copyright notice |
|
|
47 | Initialize manager for PCI Option ROMs |
|
|
48 | Check video configuration against CMOS |
|
|
49 | Initialize PCI bus and devices |
|
|
4A | Initialize all video adapters in system |
|
|
4B | Display QuietBoot screen |
|
|
4C | Shadow video BIOS ROM |
|
|
4E | Display copyright notice |
|
|
50 | Display CPU type and speed |
|
|
51 | Initialize EISA board |
|
|
52 | Test keyboard |
|
|
54 | Set key click if enabled |
|
|
56 | Enable keyboard |
|
|
58 | Test for unexpected interrupts |
|
|
5A | Display prompt "Press F2 to enter SETUP" |
|
|
5C | Test RAM between 512 and 640k |
|
|
60 | Test extended memory |
|
|
62 | Test extended memory address lines |
|
|
64 | Jump to UserPatch1 |
|
|
66 | Configure advanced cache registers |
|
|
Continued
216 | Chapter 10 Solving Problems |
