Определение ошибки в настройках BIOS по звуковому сигналу (BIOS POST CODES)
Страница 2. Phoenix BIOS POST Tone Codes

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

st 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

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 mode

4-3-1

RAM test

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