BIOS POST Tone Error Codes
What is all that beep, beep, supposed to mean?
Last modified:
ADVERTISE on COMPUTERCRAFT!
LET US HELP YOU SELL YOUR COMPUTER RELATED ITEMS!
E-mail aolsz@computercraft.com for more information
This material is presented only as a description of how I go about working
on a system. It is not meant to encourage unqualified personnel to attempt
computer repair. In any event, you assume all responsibility and liability
for injury or damage. This material may be reprinted by any non-commercial
entities. Full credit must be given to the author. The authors name,
address, e-mail address, phone numbers, web site, AND THIS NOTICE must
appear with any distributions. The document may not be edited, condensed,
annotated, or modified in any way. Any translations must state that fact
and the translators name must be listed. COPYRIGHT 1996
Anthony Olszewski
470 Grand St.
Jersey City, NJ 07302
201-795-0909
201-946-1178
aolsz@computercraft.com
COMPUTERCRAFT Web page:
http://www.computercraft.com
AMI BIOS Tone POST Codes - Fatal Errors
TONE CONDITION
1 short DRAM refresh
2 short Parity circuit
3 short Base 64K RAM
4 short System timer
5 short Processor
6 short Keyboard controller gate A20
7 short Virtual mode exception
8 short Display memory read/write test
9 short ROM BIOS checksum
10 short CMOS shutdown read/write
11 short Cache memory
AMI BIOS Tone POST Codes - Non-Fatal Errors
TONE CONDITION
1 long, 3 short Conventional/extended memory
1 long, 8 short Display/retrace test
Phoenix BIOS Tone POST Codes - Fatal Errors
TONE CONDITION
None CPU register test
None First 64K RAM test
None Interrupt vector loading proceeding
None CMOS power failure/checksum calculation
None Display configuration validation proceeding
None Display running with video ROM
None Display functional
None Mononchrome display functional
None CGA display functional
1-1-3 CMOS write/read
1-1-4 ROM BIOS checksum
1-2-1 Programmable interval timer
1-2-2 DMA Initialization
1-2-3 DMA page register write/read
1-3-1 RAM refresh verification
1-3-3 First 64K RAM chip or data line
1-3-4 First 64K RAM odd/even logic
1-4-1 Address line first 64K RAM
1-4-2 Parity failure first 64K RAM
2-1-1 Bit 0, first 64K RAM
2-1-2 Bit 1, first 64K RAM
2-1-3 Bit 2, first 64K RAM
2-1-4 Bit 3, first 64K RAM
2-2-1 Bit 4, first 64K RAM
2-2-2 Bit 5, first 64K RAM
2-2-3 Bit 6, first 64K RAM
2-2-4 Bit 7, first 64K RAM
2-3-1 Bit 8, first 64K RAM
2-3-2 Bit 9, first 64K RAM
2-3-3 Bit 10, first 64K RAM
2-3-4 Bit 11, first 64K RAM
2-4-1 Bit 12, first 64K RAM
2-4-2 Bit 13, first 64K RAM
2-4-3 Bit 14, first 64K RAM
2-4-4 Bit 15, first 64K RAM
3-1-1 Slave DMA register
3-1-2 Master DMA register
3-1-3 Master interrupt mask register
3-1-4 Slave interrupt mask register
3-2-4 Keyboard controller
3-3-4 Display initialization
3-4-1 Display retrace
3-4-2 Search for video ROM proceeding
Phoenix BIOS POST Tone Codes - Non-Fatal
Errors
TONE CONDITION
4-2-1 Timer tick interrupt test
4-2-2 Shutdown test
4-2-3 Gate A20 Failure
4-2-4 Unexpected interrupt in protected moe
4-3-1 RAM test (address failure >FFFFh)
4-3-3 Interval timer channel 2
4-3-4 Real time clock
4-4-1 Serial Port
4-4-2 Parallel Port
4-4-3 Math Co-processor test
1-1-2* System board select
1-1-3* Extender CMOS RAM
*audio code pattern preceded by low pitched tone
IBM POST Tone Codes
TONE CONDITION
NONE System board, power supply
1 short System passed all tests
2 short Display error
continuous System board, power supply
1 long, 1 short System board
1 long, 2 short Video adapter
1 long, 3 short EGA
3 long 3270 keyboard card
Return to COMPUTERCRAFT main menu
METRO COMPUTER REPAIR
470 GRAND STREET, JERSEY CITY, NJ 07303
Near NJ TURNPIKE EXIT 14C (GRAND - MONTGOMERY)
About 5 blocks from the GROVE STREET PATH subway station
201-946-1178 or 201-795-0909
Apartment for rent - Jersey City
Duplex 3br, 2 bath, Laundry room
$1085 (includes heat & hot water)
201-946-1178 or 201-795-0909
or e-mail aolsz@computercraft.com
