POST (hex)
Description
79h
Reserved
7Ah
Detect & install co-processor
7Bh
Reserved
7Ch
Reserved
7Dh
Reserved
7Eh
Reserved
7Fh
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.
80h
Reserved
81h
Reserved
82h
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.
83h
Save all data in stack back to CMOS
84h
Initialize ISA PnP boot devices
85h
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.
86h
Reserved
87h
Reserved
88h
Reserved
89h
Reserved
90h
Reserved
91h
Reserved
92h
Reserved
93h
Read HDD boot sector information for Trend Anti-Virus code
94h
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
95h
1. Program daylight saving
2. Update keyboard LED & typematic rate
96h
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.
FFh
Boot attempt (INT 19h)
40
