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- Standard Phoenix BIOS Error Beep/Diagnostic Codes
- Provided By Micro Firmware, Inc.
- Phoenix BIOS Technical Support & Upgrades
- 405-321-8333 FAX: 405-321-8342
-
- The Phoenix BIOS will issue an audible beep code in the event of a system
- error encountered during the Power On Self Test (POST). A numeric value
- is also send to port 80h representing the current state of the POST. In
- the event of a fatal system error during initialization, the code
- representing the portion of the POST causing the failure will be the last
- value sent to port 80h.
-
- The code at port 80h is used by plug-in diagnostic boards that decode
- the contents of the port address and displays the numeric value on an
- LED display. These diagnostic boards are available from a number of
- vendors, including Micro Firmware.
-
- As any experienced technician knows, a failure at any given location does
- not necessarily mean that the particular part or section under test has
- actually failed. For example, any problem with the motherboard address
- lines or local bus can cause the CMOS read/write test to fail, even though
- the CMOS RAM works perfectly.
-
- If you require further details or assistance in dealing with a fatal
- system board error, you need to seek the assistance of a qualified computer
- service technician in your area.
-
- ============================================================================
-
- Port 80h Beep
- Value Code Error/Test Description
- -------------------------------------------------------------------------
- 01h none 80286 register test in-progress
- 02h 1-1-3 CMOS write/read test in-progress or failure
- 03h 1-1-4 BIOS ROM checksum in-progress or failure
- 04h 1-2-1 Programmable Interval Timer test in-progress or failure
- 05h 1-2-2 DMA initialization in-progress or failure
- 06h 1-2-3 DMA page register write/read test in-progress or fail
- 08h 1-3-1 RAM refresh verification in-progress or failure
- 09h none 1st 64K RAM test in-progress
- 0Ah 1-3-3 1st 64K RAM chip or data line failure - multi-bit
- 0Bh 1-3-4 1st 64K RAM odd/even logic failure
- 0Ch 1-4-1 1st 64K RAM address line failure
- 0Dh 1-4-2 1st 64K RAM parity test in_progress or failure
- 10h 2-1-1 1st 64K RAM chip or data line failure - bit 0
- 11h 2-1-2 1st 64K RAM chip or data line failure - bit 1
- 12h 2-1-3 1st 64K RAM chip or data line failure - bit 2
- 13h 2-1-4 1st 64K RAM chip or data line failure - bit 3
- 14h 2-2-1 1st 64K RAM chip or data line failure - bit 4
- 15h 2-2-2 1st 64K RAM chip or data line failure - bit 5
- 16h 2-2-3 1st 64K RAM chip or data line failure - bit 6
- 17h 2-2-4 1st 64K RAM chip or data line failure - bit 7
- 18h 2-3-1 1st 64K RAM chip or data line failure - bit 8
- 19h 2-3-2 1st 64K RAM chip or data line failure - bit 9
- 1Ah 2-3-3 1st 64K RAM chip or data line failure - bit A
- 1Bh 2-3-4 1st 64K RAM chip or data line failure - bit B
- 1Ch 2-4-1 1st 64K RAM chip or data line failure - bit C
- 1Dh 2-4-2 1st 64K RAM chip or data line failure - bit D
- 1Eh 2-4-3 1st 64K RAM chip or data line failure - bit E
- 1Fh 2-4-4 1st 64K RAM chip or data line failure - bit F
- 20h 3-1-1 master DMA register test in-progress or failure
- 21h 3-1-2 slave DMA register test in-progress or failure
- 22h 3-1-3 master interrupt mask register test in-progress or fail
- 23h 3-1-4 slave interrupt mask register test in-progress or fail
- 25h none interrupt vector loading in-progress
- 27h 3-2-4 keyboard controller test in-progress or failure
- 28h none CMOS power-fail and checksum checks in-progress
- 29h none CMOS config info validation in-progress
- 2Bh 3-3-4 screen memory test in-progress or failure
- 2Ch 3-4-1 screen initialization in-progress or failure
- 2Dh 3-4-2 screen retrace tests in-progress or failure
- 2Eh none search for video ROM in-progress
- 30h none screen believed operable:
- 30h none screen believed running w/ video ROM
- 31h none monochromatic screen believed operable
- 32h none 40-column color screen believed operable
- 33h none 80-column color screen believed operable
- 34h 4-2-1 timer tick interrupt test in_progress or failure
- 35h 4-2-2 shutdown test in_progress or failure
- 36h 4-2-3 gate A20 failure
- 37h 4-2-4 unexpected interrupt in protected mode
- 38h 4-3-1 RAM test in_progress or failure above address 0FFFFh
- 3Ah 4-3-3 Interval timer channel 2 test in_progress or failure
- 3Bh 4-3-4 Time-Of-Day clock test in_progress or failure
- 3Ch 4-4-1 Serial port test test in_progress or failure
- 3Dh 4-4-2 Parallel port test test in_progress or failure
- 3Eh 4-4-3 Math Coprocessor test in_progress or failure
-
- Error codes in the 50h range are chip set or custom platform specific,
- and will vary from system to system. Contact your system manufacturer
- for details.
-
-