Table of Contents
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CP
Beeps
85
86
88
8A
8C
90
91
92
93
94
95
96
98
1-2
9A
9C
9E
A0
A2
A4
A8
AA
AC
AE
B0
B2
Reason
Initialize PC-compatible PnP ISA devices
Re-initialize on board I/O ports
Initialize BIOS Data Area
Initialize Extended BIOS Data Area
Initialize floppy controller
Initialize hard disk controller
Initialize local bus hard disk controller
Jump to UserPatch2
Build MPTABLE for multi-processor boards
Disable A20 address line
Install CD-ROM for boot
Clear huge ES segment register
Search for option ROMs. One long, two
short beeps on checksum failure
Shadow option ROMs
Set up Power Management
Enable hardware interrupts
Set time of day
Check key lock
Initialize typematic rate
Erase F2 prompt
Scan for F2 key stroke
Enter SETUP
Clear in-POST flag
Check for errors
POST done – prepare to boot Operating
System
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Troubleshooting
131
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Table of Contents
Troubleshooting
