Acer ASPIRE 4252 Service Manual page 140

Code
BEh Cle
BFh
C0h
C1h Initial
C2h Initial
C3h
Code
C4h
C5h
C6h
C7h
C8h
C9h
D2h Unkn
Code
E0h Initial
E1h Initial
E2h Initial
E3h
E4h
E5h
E6h
E7h G
E8h Set
E9h Initial
EAh
EBh
ECh Initialize
EDh Initialize
EEh
EFh
F0h
F1h
F2h Initial
F3h
F4h 1
F5h
F6h Cle
F7h
130
Beeps
ar screen (optional)
Check virus and backup reminders
Try to boot with INT 19
ize POST Error Manager (PEM)
ize error logging
Initialize error display function
Beeps
Initialize system error handler
PnPnd dual CMOS (optional)
Initialize notebook docking (optional)
Initialize notebook docking late
Force check (optional)
Extended checksum (optional)
own interrupt
Beeps
ize the chipset
ize the bridge
ize the CPU
Initialize system timer
Initialize system I/O
Check force recovery boot
Checksum BIOS ROM
o to BIOS
Huge Segment
ize Multi Processor
Initialize OEM special code
Initialize PIC and DMA
Memory type
Memory size
Shadow Boot Block
System memory test
Initialize interrupt vectors
Initialize Run Time Clock
ize video
Initialize System Management Mode
Output one beep before boot
Boot to Mini DOS
ar Huge Segment
Boot to Full DOS
POST Routine Description
POST Routine Description
For Boot Block in Flash ROM
Chapter 4