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Appendix
6Eh
6Fh
70-72h
73h
74h
75h
76h
77h
78h-79h
7Ah
7B-7Eh
7Fh
80h-81h
82h
83h
84h
85h
86-92h
93h
94h
95h
96h
FFh
B-4
Reserved
1.
Initialize floppy controller
2.
Set up floppy related fields in 40:hardware.
Reserved
(Optional Feature) Enter AWDFLASH.EXE if :
-AWDFLASH is found in floppy drive.
-ALT+F2 is pressed
Reserved
Detect & install all IDE devices: HDD, LS120, ZIP, CDROM.....
Reserved
Detect serial ports & parallel ports.
Reserved
Detect & install co-processor
Reserved
1.
Switch back to text mode if full screen logo is supported.
-If errors occur, report errors & wait for keys
-If no errors occur or F1 key is pressed to continue:
Clear EPA or customization logo.
Reserved
1.
Call chipset power management hook.
2.
Recover the text fond used by EPA logo (not for full screen logo)
3.
If password is set, ask for password.
Save all data in stack back to CMOS
Initialize ISA PnP boot devices
1.
USB final Initialization
2.
NET PC: Build SYSID structure
3.
Switch screen back to text mode
4.
Set up ACPI table at top of memory.
5.
Invoke ISA adapter ROMs
6.
Assign IRQs to PCI devices
7.
Initialize APM
8.
Clear noise of IRQs.
Reserved
Read HDD boot sector information for Trend Anti-Virus code
1.
Enable L2 cache
2.
Program boot up speed
3.
Chipset final initialization.
4.
Power management final initialization
5.
Clear screen & display summary table
6.
Program K6 write allocation
7.
Program P6 class write combining
1.
Program daylight saving
2.
Update keyboard LED & typematic rate
1.
Build MP table
2.
Build & update ESCD
3.
Set CMOS century to 20h or 19h
4.
Load CMOS time into DOS timer tick
5.
Build MSIRQ routing table.
Boot attempt (INT 19h)
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