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Chapter 10 Solving Problems
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
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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 in-POST flag
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