FIC A360 用户手册
Troubleshooting and Repair
Table 6-3 (c)
BIOS Beep Codes
Beep
Code
Diagnostic
Code
Description Test
Performed
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.
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.
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.
4-2-1 34h
Timer-tick interrupt test in
progress or failure.
progress or failure.
All interrupts expect the timer-tick
interrupt are masked off at the interrupt
controllers. If a timer-tick interrupt does
not occur during a specific time period,
an error message is displayed on the
screen. The system does not halt.
interrupt are masked off at the interrupt
controllers. If a timer-tick interrupt does
not occur during a specific time period,
an error message is displayed on the
screen. The system does not halt.
4-2-2 35h
Shutdown test in progress or
failure.
failure.
A return address is stored in 40:67h and
the processor is reset via the keyboard
controller. If a timer tick occurs during
this time period, an error message is
displayed on the screen. Other failures
are hard to detect. If possible, the BIOS
will continue with POST, skipping the
memory tests.
the processor is reset via the keyboard
controller. If a timer tick occurs during
this time period, an error message is
displayed on the screen. Other failures
are hard to detect. If possible, the BIOS
will continue with POST, skipping the
memory tests.
FIC A360 Service Manual 6-7