Intel D845PEBT2 Product Specification - Page 126

Speaker, 5 BIOS Beep Codes

Get Intel D845PEBT2 PDF manuals and user guides View all Intel D845PEBT2 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 126 highlights

Intel Desktop Board D845PEBT2 Technical Product Specification Table 95 describes the lower nibble of the high byte and indicates the bus on which the routines are being executed. Table 95. Lower Nibble High Byte Functions Value Description 0 Generic DIM (Device Initialization Manager) 1 Onboard system devices 2 ISA devices 3 EISA devices 4 ISA PnP devices 5 PCI devices 5.4 Speaker A 47 Ω inductive speaker is mounted on the Desktop Board. The speaker provides audible error code (beep code) information during POST. For information about The location of the onboard speaker Refer to Figure 1, page 14 5.5 BIOS Beep Codes Whenever a recoverable error occurs during POST, the BIOS displays an error message describing the problem (see Table 96). The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the video configuration fails (a faulty video card or no card installed) or if an external ROM module does not properly checksum to zero. An external ROM module (for example, a video BIOS) can also issue audible errors, usually consisting of one long tone followed by a series of short tones. For more information on the beep codes issued, check the documentation for that external device. There are several POST routines that issue a POST terminal error and shut down the system if they fail. Before shutting down the system, the terminal-error handler issues a beep code signifying the test point error, writes the error to I/O port 80h, attempts to initialize the video and writes the error in the upper left corner of the screen (using both monochrome and color adapters). 126

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
Intel Desktop Board D845PEBT2 Technical Product Specification
126
Table 95 describes the lower nibble of the high byte and indicates the bus on which the routines are
being executed.
Table 95.
Lower Nibble High Byte Functions
Value
Description
0
Generic DIM (Device Initialization Manager)
1
Onboard system devices
2
ISA devices
3
EISA devices
4
ISA PnP devices
5
PCI devices
5.4 Speaker
A 47
Ω
inductive speaker is mounted on the Desktop Board.
The speaker provides audible error
code (beep code) information during POST.
For information about
Refer to
The location of the onboard speaker
Figure 1, page 14
5.5 BIOS Beep Codes
Whenever a recoverable error occurs during POST, the BIOS displays an error message describing
the problem (see Table 96).
The BIOS also issues a beep code (one long tone followed by two
short tones) during POST if the video configuration fails (a faulty video card or no card installed)
or if an external ROM module does not properly checksum to zero.
An external ROM module (for example, a video BIOS) can also issue audible errors, usually
consisting of one long tone followed by a series of short tones.
For more information on the beep
codes issued, check the documentation for that external device.
There are several POST routines that issue a POST terminal error and shut down the system if they
fail.
Before shutting down the system, the terminal-error handler issues a beep code signifying the
test point error, writes the error to I/O port 80h, attempts to initialize the video and writes the error
in the upper left corner of the screen (using both monochrome and color adapters).