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Chapter 4
75
AAh
Scan for F2 key stroke
ACh
Enter SETUP
AEh
Clear Boot flag
B0h
Check for errors
B2h
POST done—prepare to boot operating
system
B4h
1
One short beep before boot
B5h
Terminate QuietBoot (optional)
B6h
Check password (optional)
B9h
Prepare Boot
BAh
Initialize DMI parameters
BBh
Initialize PnP Option ROMs
BCh
Clear parity checkers
BDh
Display MultiBoot menu
BEh
Clear screen (optional)
BFh
Check virus and backup reminders
C0h
Try to boot with INT 19
C1h
Initialize POST Error Manager (PEM)
C2h
Initialize error logging
C3h
Initialize error display function
C4h
Initialize system error handler
C5h
PnPnd dual CMOS (optional)
C6h
Initialize notebook docking (optional)
C7h
Initialize notebook docking late
C8h
Force check (optional)
C9h
Extended checksum (optional)
D2h
Unknown interrupt
E0h
Initialize the chipset
E1h
Initialize the bridge
E2h
Initialize the CPU
E3h
Initialize the system timer
E4h
Initialize system I/O
E5h
Check force recovery boot
E6h
Checksum BIOS ROM
E7h
Go to BIOS
E8h
Set Huge Segment
E9h
Initialize Multi Processor
EAh
Initialize OEM special code
EBh
Initialize PIC and DMA
ECh
Initialize Memory type
EDh
Initialize Memory size
EEh
Shadow Boot Block
EFh
System memory test
Code
Beeps
POST Routine Description
Acer TM 4520 SG.book Page 75 Friday, June 22, 2007 5:43 PM
Summary of Contents for Extensa 4120
Page 6: ...VI ...
Page 10: ...X Table of Contents ...
Page 36: ...26 Chapter 2 ...
Page 93: ...Chapter 5 83 System Block Diagram System Block Diagram and Board Layout Chapter 5 ...
Page 98: ...88 Chapter 6 Aspire 5910 Exploded Diagram ...
Page 100: ...90 Chapter 6 Cables Category No Part Name and Description Acer Part No ...
Page 101: ...Chapter 6 91 Fan Hard Disk Drive Category No Part Name and Description Acer Part No ...
Page 102: ...92 Chapter 6 Keyboard Category No Part Name and Description Acer Part No ...
Page 103: ...Chapter 6 93 Keyboard TM LCD Panel Category No Part Name and Description Acer Part No ...
Page 104: ...94 Chapter 6 Mechanical parts Category No Part Name and Description Acer Part No ...
Page 105: ...Chapter 6 95 Memory Optical Disc Drive Category No Part Name and Description Acer Part No ...
Page 106: ...96 Chapter 6 Power related Processor Category No Part Name and Description Acer Part No ...
Page 107: ...Chapter 6 97 Screws Miscellaneous Category No Part Name and Description Acer Part No ...
Page 108: ...98 Chapter 6 Category No Part Name and Description Acer Part No Audio related Boards ...
Page 109: ...Chapter 6 99 Cables Category No Part Name and Description Acer Part No ...
Page 110: ...100 Chapter 6 Fan Hard Disk Drive Category No Part Name and Description Acer Part No ...
Page 111: ...Chapter 6 101 Keyboard Category No Part Name and Description Acer Part No ...
Page 112: ...102 Chapter 6 Keyboard TM LCD Panel Category No Part Name and Description Acer Part No ...
Page 113: ...Chapter 6 103 Mechanical parts Category No Part Name and Description Acer Part No ...
Page 114: ...104 Chapter 6 Memory Optical Disc Drive Category No Part Name and Description Acer Part No ...
Page 115: ...Chapter 6 105 Power related Processor Category No Part Name and Description Acer Part No ...
Page 116: ...106 Chapter 6 Screws Miscellaneous Category No Part Name and Description Acer Part No ...
Page 122: ...112 Appendix A ...
Page 136: ...126 Appendix C ...
Page 143: ...Index 133 ...