8355 N/B MAINTENANCE

7.2 Error Codes

Following is a list of error codes in sequent display on the PIO debug board.

Code

POST Routine Description

 

 

10h

Some type of lone reset

 

 

11h

Turn off FAST A20 for POST

 

 

12h

Signal power on reset

 

 

13h

Initialize the chipset

 

 

14h

Search for ISA Bus VGA adapter

 

 

15h

Reset counter / Timer 1

 

 

16h

User register config through CMOS

 

 

17h

Size memory

 

 

18h

Dispatch to RAM test

 

 

19h

Check sum the ROM

 

 

1Ah

Reset PIC’s

 

 

1Bh

Initialize video adapter(s)

 

 

1Ch

Initialize video (6845Regs)

 

 

1Dh

Initialize color adapter

 

 

1Eh

Initialize monochrome adapter

 

 

1Fh

Test 8237A page registers

 

 

Code

POST Routine Description

 

 

20h

Test keyboard

 

 

21h

Test keyboard controller

 

 

22h

Check if CMOS RAM valid

 

 

23h

Test battery fail & CMOS X-SUM

 

 

24h

Test the DMA controller

 

 

25h

Initialize 8237A controller

 

 

26h

Initialize int vectors

 

 

27h

RAM quick sizing

 

 

28h

Protected mode entered safely

 

 

29h

RAM test completed

 

 

2Ah

Protected mode exit successful

 

 

2Bh

Setup shadow

 

 

2Ch

Going to initialize video

 

 

2Dh

Search for monochrome adapter

 

 

2Eh

Search for color adapter

 

 

2Fh

Sign on messages displayed

 

 

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MiTAC 8355 service manual Error Codes, Code Post Routine Description