118
8575
8575
A N/B Maintenance
A N/B Maintenance
7.2 Error Codes
Following is a list of error codes in sequent display on the PIO debug board.
Test 8237A page registers
1Fh
Initialize monochrome adapter
1Eh
Initialize color adapter
1Dh
Initialize video (6845Regs)
1Ch
Initialize video adapter(s)
1Bh
Reset PIC’s
1Ah
Check sum the ROM
19h
Dispatch to RAM test
18h
Sizememory
17h
User register config through CMOS
16h
Reset counter / Timer 1
15h
Search for ISA Bus VGA adapter
14h
Initialize the chipset
13h
Signal power on reset
12h
Turn off FAST A20 for POST
11h
Some type of lone reset
10h
POST Routine Description
Code
Signon messages displayed
2Fh
Search for color adapter
2Eh
Search for monochrome adapter
2Dh
Going to initialize video
2Ch
Setup shadow
2Bh
Protected mode exit successful
2Ah
RAM test completed
29h
Protected mode entered safely
28h
RAM quick sizing
27h
Initialize int vectors
26h
Initialize 8237A controller
25h
Test the DMA controller
24h
Test battery fail & CMOS X-SUM
23h
Check if CMOS RAM valid
22h
Test keyboard controller
21h
Test keyboard
20h
POST Routine Description
Code