Acer Power SD Service Manual page 59

Checkpoint
4Ah
4Bh
4Ch
4Dh
4Eh
4Fh
50h
51h
52h
53h
54h
55h
56h
57h
58h
59h
5Ah
5Bh
5Ch
5Dh
5Eh
5Fh
60h
61h
62h
63h
64h
65h
66h
67h
68h
54
Description
Reserved
Reserved
Reserved
Reserved
1. Program MTRR of M1 CPU
2. Initialize L2 cache for P6 class CPU & program CPU
with proper cacheable range.
3. Initialize the APIC for P6 class CPU.
4. On MP platform, adjust the cacheable range to smaller
one in case the cacheable ranges between each CPU
are not identical.
Reserved
Initialize USB Keyboard & Mouse
Reserved
Test all memory (clear all extended memory to 0)
Clear password according to H/W jumper (Optional)
Reserved
Display number of processors (multi-processor platform)
Reserved
1. Display PnP logo
2. Early ISA PnP initialization - Assign CSN to every
ISA PnP device
Reserved
Initialize the combined Trend Anti-Virus code
Reserved
(Optional Feature)
Show message for entering AWDFLASH.EXE from FDD
(optional)
Reserved
1. Initialize Init_Onboard_Super_IO
2. Initialize Init_Onboard_AUDIO
Reserved
Reserved
Okay to enter Setup utility; i.e. not until this POST stage can
users enter the CMOS setup utility.
Reserved
Reserved
Reset keyboard if Early_Reset_KB is not defined.
Reserved
Initialize PS/2 Mouse
Reserved
Prepare memory size information for function call:
INT 15h ax=E820h
Reserved
Chapter 4