NEC Express 120Mf User Manual

4-9  Troubleshooting 

 

 

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01 Initialize 

BMC 

02 

Verify Real Mode 

03 Test 

BMC 

04 

Get Processor type 

06 

Initialize system hardware 

08 

Initialize chipset registers with initial POST values 

09 

Set in POST flag 

0A 

Initialize Processor registers 

0B 

Enable Processor cache 

0C 

Initialize caches to initial POST values 

0E Initialize 

I/O 

0F 

Initialize the local bus IDE 

10 

Initialize Power Management 

11 

Load alternate registers with initial POST values 

12 

Restore Processor control word during warm boot 

13 

Initialize PCI Bus mastering devices 

14 

Initialize keyboard controller 

16 

BIOS ROM checksum 

17 

Initialize external cache before memory autosize 

18 

8254 timer initialization 

1A 

8237 DMA controller initialization 

1C 

Reset Programmable Interrupt Controller 

20 

Test DRAM refresh 

22 

Test 8742 Keyboard Controller 

24 

Set ES segment register to 4GB 

28 

Autosize DRAM, system BIOS stops execution here if the BIOS does not detect any 
usable memory DIMMs 

29 

Initializes the POST Memory Manager 

2A 

Clear 8 MB base RAM 

2C 

Base RAM failure, BIOS stops execution here if entire memory is bad 

2E 

Test the first 4MB of RAM 

2F 

Initialize external cache before shadowing 

32 

Test Processor bus-clock frequency 

33 

Initializes the Phoenix Dispatch Manager 

34 Test 

CMOS 

35 

RAM Initialize alternate chipset registers 

36 

Warm start shut down 

37 

Reinitialize the chipset  

38 

Shadow system BIOS ROM 

39 

Reinitialize the cache  

3A Autosize 

cache 

3C 

Configure advanced chipset registers 

3D 

Load alternate registers with CMOS values 

41 

Check unsupported processor 

40 

Set Initial Processor speed new 

42 

Initialize interrupt vectors