• Eurosoft/Mylex BIOS Post Codes
• Eurosoft 4.71 BIOS Post Codes
• Mylex BIOS Post Codes

 

Eurosoft/Mylex BIOS Post Codes:

01	CPU test failed
02	DMA page register test failed
03	Keyboard controller test failed
04	BIOS ROM checksum error
05	Keyboard command test failed
06	CMOS RAM test failed
07	RAM refresh test failed
08	First-64KB memory test failed
09	DMA controller test failed
0A	Initialize DMA controller
0B	Interrupt test failed
0C	Checking RAM size
0D	Initializing video system
0E	Video BIOS checksum failed
10	Search for monochrome video adapter
11	Search for color video adapter
12	Word-splitter and byte-shift test failed
13	Keyboard test failed
14	RAM test failed
15	System timer test failed
16	Initialize keyboard controller output port
17	Keyboard test failed
18	Initialize keyboard
19	Real-time clock test failed
1A	Math coprocessor test failed
1B	Reset floppy and hard drive controllers
1C	Initialize floppy drive
1D	Initialize the hard drive
1E	Locate adapter ROM's from C800h to DFFFh
1F	Locate and initialize serial and parallel ports
20	Initialize time of day in RTC
21	Locate adapter ROM's from E000h to EFFFh
22	Search for boot device
23	Boot from floppy disk
24	Boot from hard disk
25	Gate A20 enable/disable failure
26	Parity error
30	DDNIL bit-scan failure
FF	Fatal error...system halted

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Eurosoft 4.71 BIOS Post Codes:

03	DMA page registers tested
04	DMA page registers failed
05	Keyboard tested
06	Keyboard test failed
07	Keyboard self-test passed
08	Keyboard self-test failed
09	8042 keyboard controller checking links
0A	8042 keyboard controller unable to read links
0B	RATMOD/DIAG link
0C	Keyboard port 60h tested
0D	Keyboard failed port 60h test
0E	Keyboard parameter tested
0F	Keyboard parameter test failed
10	Keyboard command byte read
11	Keyboard command byte failed read
12	Keyboard command byte read OK
13	Keyboard command byte corrupt
14	RAM-refresh toggle switch
15	RAM-refresh clock not correct
16	RAM bit test passed
17	RAM bit test failed
18	RAM parity tested
19	RAM parity error
1A	CMOS RAM tested
1B	CMOS RAM test failed
1C	CMOS battery OK
1D	CMOS battery failed
1E	CMOS checksum passed
1F	CMOS checksum failed
20	CMOS battery fault bit set
21	Master DMA controller 1 tested
21	Slave DMA controller 2 tested
22	Master DMA controller 1 failed
23	Slave DMA controller 2 failed
24	Protected mode entered successfully
25	RAM test completed
26	BIOS RAM checksum tested
27	BIOS RAM checksum test failed
28	Protected mode exit successful
29	Keyboard power-up reply received
2A	Keyboard power-up reply missing
2B	Keyboard disable command tested
2C	Keyboard disable command failed
2D	Checking for video system
2E	POST errors have been reported
2F	About to halt
30	Protected mode entered safely
31	RAM test complete
32	Master interrupt controller (PIC 1) tested
33	Master interrupt controller (PIC 1) failed
34	Slave interrupt controller (PIC 2) tested
35	Slave interrupt controller (PIC 2) failed
36	Chipset initialization
37	Chipset initialization failed
38	BIOS shadowing tested
39	BIOS shadowing failed
3A	Video BIOS shadowing tested
3B	Video BIOS shadowing failed

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Mylex BIOS Post Codes:

01	CPU test
02	DMA page register tested
03	Keyboard controller tested
04	ROM BIOS checksum
05	Send keyboard command test
06	CMOS RAM test
08	RAM-refresh test
09	First-64K memory test
0A	DMA controller test
0B	Initialize DMA controller
0C	Interrupt test
0D	Determine RAM size
0E	Initialize video and verify EGA or VGA checksum
10	Search for monochrome card
11	Search for color card
12	Word-splitter and byte-shifter test
13	Keyboard tested
14	RAM tested
15	System timer tested
16	Initialize keyboard-controller output port
17	Keyboard-interrupt test

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All information has been gathered with permission of the respective BIOS providers. Although Bios Central has used reasonable effort to ensure accuracy we are unable to verify all codes posted. Use at your own risk. Bios Central, or any person associated with Bios Central takes no responsibility for any dmage resulting from the use of this information.