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NEX 6620A User's Guide
POST (hex)
40h
Test 8259 interrupt mask bits for channel 2.
41h
Reserved
42h
Reserved
43h
Test 8259 functionality.
44h
Reserved
45h
Reserved
46h
Reserved
47h
Initialize EISA slot
48h
Reserved
49h
1. Calculate total memory by testing the last double word of each 64K page.
2. Program write allocation for AMD K5 CPU.
4Ah
Reserved
4Bh
Reserved
4Ch
Reserved
4Dh
Reserved
4Eh
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.
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
57h
1. Display PnP logo.
2. Early ISA PnP initialization
-Assign CSN to every ISA PnP device.
58h
Reserved
59h
Initialize the combined Trend Anti-Virus code.
BIOS Setup
Description
Rev. B0
0301
4-36
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