Acer Aspire T680 Service Manual page 71

Checkpoint
8Bh
8Ch
8Dh
8Eh
8Fh
90h
91h
92h
93h
94h
95h
96h
FFh
64
1. Invoke all ISA adapter ROMs
2. Invoke all PCI ROMs (except VGA)
Reserved
1. Enable/Disable Parity Check according to CMOS setup.
2. APM Initialization
Reserved
Clear noise if IRQs
Reserved
Reserved
Reserved
Read HDD boot sector information for Trend Anti-Virus code
1. Enable L2 cache
2. Program Daylight Saving
3. Program boot up speed
4. Chipset final initialization
5. Power management final initialization
6. Clear screen & dispaly summary table
7. Program K6 write allocation
8. Program P6 class write combining
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)
Description
Chapter 4