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2.4 System board Troubleshooting 2 Troubleshooting
Table 2-3 D port status (3/6)
D port status
Inspection items details
Clearing resuming status
Setting a request for a resuming error
F103
Copying system BIOS from ROM to RAM
Initializing SMRAM
Checking the factor of WakeUp
Changing SMRAM base
F104h Initializing SMRAM
Enabling SMI
Initializing a PIT and a CPU Initializing devices before initializing PCI bus
Testing(only on COLD booting) and Initializing PIT
Setting test pattern to channel 0 of PIT#0
Checking whether the test pattern ca be read
Initializing PIT channel 0 (Interval of time
interrupt55ms)
Initializing PIT channel 2 (frequency for sound
generator664ms)
Testing PIT channel 1(Checks whether the refresh signal
operates correctly in refresh interval of 30μs)
Initializing PIT channel 2 ( checks whether the speaker
gate operates correctly)
Measuring CPU clock
Enabling SMI other than auto-off function
Control of battery discharging current
Performing timeshared process for time measurement of
IRT
Initializing CPU Updating P6 micro-code
Enabling or disabling the function of processor serial
number ID
Checking whether Geyserville is supported
Switching CPU clock speed to high
F106h
Setting Graphics Aperture Size
Initializing ACPI, KBC, VGA, Storing the size of ROM in a buffer
sound function, and PIC Reading EC version
Updating the type of flash memory
Determining the destination
Checking the default settings of CMOS
F107h
Initializing ACPI table
PORTEGE R100 Maintenance Manual (960-440) 2-23