Beep Codes

Beep code

Contents

Description

 

Port 80h

 

 

 

 

2-4-3

1Eh

Bit 14 first 64K RAM failure.

 

 

 

2-4-4

1Fh

Bit 15 first 64K RAM failure.

 

 

 

3-1-1

20h

Slave DMA register failure.

 

 

 

3-1-2

21h

Master DMA register failure.

 

 

 

3-1-3

22h

Master interrupt mask register failure.

 

 

 

3-1-4

23h

Slave interrupt mask register failure.

 

 

 

None

25h

Interrupt vector loading in progress.

 

 

 

3-2-4

27h

Keyboard controller test failure.

 

 

 

None

28h

CMOS power failure and checks calculation in

 

 

progress.

 

 

 

None

29h

CMOS configuration validation in progress.

 

 

 

3-3-4

2Bh

Screen initialization failure.

 

 

 

3-4-1

2Ch

Screen retrace test failure.

 

 

 

3-4-2

2Dh

Search for video ROM in progress.

 

 

 

None

2Eh

Screen running with video ROM.

 

 

 

None

30h

Screen operable.

 

 

 

None

30h

Screen running with video ROM.

 

 

 

None

31h

Monochrome monitor operable.

 

 

 

None

32h

Color monitor (40 column) operable.

 

 

 

None

33h

Color monitor (80 column) operable.

 

 

 

 

 

 

B-3