FIC a440 Servicehandbuch
Troubleshooting and Repair
FIC A440 Series Service Manual
6-7
Table 6-3 (c) BIOS Beep Codes
Beep
Code
Code
Diagnostic
Code
Description Test
Performed
None
28h
CMOS RAM power failure
and checksum calculation
test in progress.
and checksum calculation
test in progress.
The power-fail bit in CMOS RAM is
tested and the lower CMOS RAM area is
being checksummed. A failure does not
result in system halt.
tested and the lower CMOS RAM area is
being checksummed. A failure does not
result in system halt.
None
29h
CMOS RAM configuration
validation for video in
progress.
validation for video in
progress.
No specific test is performed - just
indicates that the configuration specified
in CMOS for video is being matched
against the actual installation. A failure
does not result in a system halt.
indicates that the configuration specified
in CMOS for video is being matched
against the actual installation. A failure
does not result in a system halt.
3-3-4
2Bh
Screen memory test in
progress or failure.
progress or failure.
The video buffers (B0000h and B8000h)
are tested with a pattern test and a
rolling ones test. Failure will result in a
beep code but not a system halt.
are tested with a pattern test and a
rolling ones test. Failure will result in a
beep code but not a system halt.
3-4-1
2Ch
Screen initialization in
progress.
progress.
Until the video installation is confirmed,
any calls to INT 10h Function 0 (set
mode) will be prefaced with the
diagnostic code. There is no expected
failure from this.
any calls to INT 10h Function 0 (set
mode) will be prefaced with the
diagnostic code. There is no expected
failure from this.
3-4-2
2Dh
Screen retrace test in
progress or failure.
progress or failure.
Over a period of time, the retrace bit
(bit0) in the appropriate CRT controller
status register (either port 3BAh or
3DAh) is read and tested. The retrace bit
should toggle from 0 to 1, then 1 to 0
within the time period.
(bit0) in the appropriate CRT controller
status register (either port 3BAh or
3DAh) is read and tested. The retrace bit
should toggle from 0 to 1, then 1 to 0
within the time period.
None
2Eh
Search for video ROM in
progress.
progress.
No specific test is performed by the
system BIOS - just indicates that the
BIOS is about to jump to the initialization
code in the video option ROM.
system BIOS - just indicates that the
BIOS is about to jump to the initialization
code in the video option ROM.
none
30h
Screen running with video
ROM.
ROM.
No specific test is performed - just
indicates that a video option ROM was
found and believed to be operating.
indicates that a video option ROM was
found and believed to be operating.
none 31h Monochrome
monitor
operable.
No specific test is performed - just
indicates that the BIOS believes a
monochrome monitor is installed and is
operating.
indicates that the BIOS believes a
monochrome monitor is installed and is
operating.
none
32h
Color monitor (40-column)
operable.
operable.
No specific test is performed - just
indicates that the BIOS believes a color
monitor is installed and is operating. The
mode has been set to 40-column as
selected by the user in CMOS RAM.
indicates that the BIOS believes a color
monitor is installed and is operating. The
mode has been set to 40-column as
selected by the user in CMOS RAM.
none
33h
Color monitor (80-column)
operable.
operable.
No specific test is performed - just
indicates that the BIOS believes a color
monitor is installed and is operating. The
mode has been set to 80-column as
selected by the user in CMOS RAM.
indicates that the BIOS believes a color
monitor is installed and is operating. The
mode has been set to 80-column as
selected by the user in CMOS RAM.