Troubleshooting BIOS Beep Codes - Phoenix BIOS - Older Family

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1-1-3 (02h): CMOS write/read test failure

1-1-4 (03h): BIOS ROM checksum failure

1-2-1 (04h): Programmable interval timer test failure

1-2-2 (05h): DMA initialization failure

1-2-3 (06h): DMA page register write/read test failure

1-3-1 (08h): RAM refresh verification failure

1-3-3 (0Ah): 1st 64K RAM chip or data line failure - multi-bit

1-3-4 (0Bh): 1st 64K RAM odd/even logic failure

1-4-1 (0Ch): 1st 64K RAM address line failure

1-4-2 (0Dh): 1st 64K RAM parity test in progress or failure

2-1-1 (10h): 1st 64K RAM chip or data line failure - bit 0

2-1-2 (11h): 1st 64K RAM chip or data line failure - bit 1

2-1-3 (12h): 1st 64K RAM chip or data line failure - bit 2

2-1-4 (13h): 1st 64K RAM chip or data line failure - bit 3

2-2-1 (14h): 1st 64K RAM chip or data line failure - bit 4

2-2-2 (15h): 1st 64K RAM chip or data line failure - bit 5

2-2-3 (16h): 1st 64K RAM chip or data line failure - bit 6

2-2-4 (17h): 1st 64K RAM chip or data line failure - bit 7

2-3-1 (18h): 1st 64K RAM chip or data line failure - bit 8

2-3-2 (19h): 1st 64K RAM chip or data line failure - bit 9

2-3-3 (1Ah): 1st 64K RAM chip or data line failure - bit A

2-3-4 (1Bh): 1st 64K RAM chip or data line failure - bit B

2-4-1 (1Ch): 1st 64K RAM chip or data line failure - bit C

2-4-2 (1Dh): 1st 64K RAM chip or data line failure - bit D

2-4-3 (1Eh): 1st 64K RAM chip or data line failure - bit E

2-4-4 (1Fh): 1st 64K RAM chip or data line failure - bit F

3-1-1 (20h): Master DMA register test failure

3-1-2 (21h): Slave DMA register test failure

3-1-3 (22h): Master interrupt mask register test failure

3-1-4 (23h): Slave interrupt mask register test failure

3-2-4 (27h): Keyboard controller test failure

3-3-4 (2Bh): Screen memory test failure

3-4-1 (2Ch): Screen initialization failure

3-4-2 (2Dh): Screen retrace test failure

4-2-1 (34h): Timer tick interrupt test failure

4-2-2 (35h): Shutdown test failure

4-2-3 (36h): Gate A20 failure

4-2-4 (37h): Unexpected interrupt in protected mode

4-3-1 (38h): RAM test failure above address 0FFFFh

4-3-3 (3Ah): Interval timer channel 2 test failure

4-3-4 (3Bh): Time-Of-Day clock test failure

4-4-1 (3Ch): Serial port test failure

4-4-2 (3Dh): Parallel port test failure

4-4-3 (3Eh): Math coprocessor test failure


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