Table 10-2. Port-80 Codes (continued)
Port 80 Code | Reason |
|
|
95 | Install CD ROM for boot |
|
|
96 | Clear huge ES segment register |
|
|
98 | Search for option ROMs. One long, two short beeps on |
| checksum failure |
|
|
9A | Shadow option ROMs |
|
|
9C | Set up Power Management |
|
|
9E | Enable hardware interrupts |
|
|
A0 | Set time of day |
|
|
A2 | Check key lock |
|
|
A4 | Initialize typematic rate |
|
|
A8 | Erase F2 prompt |
|
|
AA | Scan for F2 key stroke |
|
|
AC | Enter SETUP |
|
|
AE | Clear |
|
|
B0 | Check for errors |
|
|
B2 | POST done – prepare to boot operating system |
|
|
B4 | One short beep before boot |
|
|
B5 | Display MultiBoot menu |
|
|
B6 | Check password (optional) |
|
|
B8 | Clear global descriptor table |
|
|
BC | Clear parity checkers |
|
|
BE | Clear screen (optional) |
|
|
BF | Check virus and backup reminders |
|
|
Continued
218 | Chapter 10 Solving Problems |
