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166 Solving Problems
Table 16. Port-80 Codes (continued)
POST Code Beeps Error
9F Initialize local-bus hard-disk controller
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 1 One short beep before boot
B5 Display MultiBoot menu
B6 Check password (optional)
B7 Initialize ACPI
B8 Clear global descriptor table
B9 Prepare to boot
BA Initialize DMI
BC Clear parity checkers
BD Invoke boot menu
BE Clear screen (optional)
BF Check virus and backup reminders
C0 4-1-1-1 Try to boot with INT 19 (Beep code if disabling A20 fails)
C1 Initialize the POST Error Manager
C2 Log POST Errors
C3 Display POST Errors
D0 Interrupt handler error
D2 Unknown interrupt error
D4 Pending interrupt error
D6 Initialize option ROM error
D8 Shutdown error
DA Extended Block Move
DC Shutdown 10 error
DE Keyboard controller error
DF 4-2-4-4 A20 Error
FB FRB in progress
FC Five second wait for BMC to initialize
FD FRB-2 watch dog timer failed; reset will occur in five seconds