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47h
Initialize EISA slot
48h
Reserved
Calculate total memory by testing the last double last word of each
49h
64K page; Program writes allocation for AMD K5 CPU
4Ah
Reserved
4Bh
Reserved
4Ch Reserved
4Dh Reserved
Program MTRR of M1 CPU; initialize L2 cache for P6 class CPU &
program cacheable range; Initialize the APIC for P6 class CPU; On
4Eh
MP platform, adjust the cacheable range to smaller one in case the
cacheable ranges between each CPU are not identical
4Fh
reserved
50h
Initialize USB
51h
Reserved
52h
Test all memory (clear all extended memory to 0)
53h
Reserved
54h
Reserved
55h
Display number of processors (multi-processor platform)
56h
Reserved
Display PnP logo; Early ISA PnP initialization and assign CSN to every
57h
ISA PnP device
58h
Reserved
59h
Initialize the combined Trend Anti-Virus code
5Ah
Reserved
Show message for entering AWDFLASH.EXE from FDD (optional
5Bh
feature)
5Ch Reserved
5Dh Initialize Init_Onboard_Super_IO switch; Initialize Init_Onboard_
AUDIO switch
5Eh
Reserved
5Fh
Reserved
60h
Okay to enter Setup utility
61h
Reserved
62h
Reserved
63h
Reserved
64h
Reserved
65h
Initialize PS/2 mouse
66h
Reserved
67h
Prepare memory size information for function call: INT 15h ax=E820h
68h
Reserved
69h
Turn on L2 cache
6Ah
Reserved
Program chipset registers according to items described in Setup &
6Bh
Auto-Configuration table
6Ch Reserved
Assign resources to all ISA PnP devices; Auto assign ports to onboard
6Dh
COM ports if the corresponding item in Setup is set to "AUTO"
6Eh
Reserved
ITX-i9453 User's Manual
BIOS
59
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