2.4 System Board Troubleshooting 2 Troubleshooting Procedures
QOSMIO F20 Maintenance Manual (960-526) [CONFIDENTIAL] 2-23
Table 2-4 Debug port (Boot mode) error status (4/9)
D port status
Inspection items Details
Resume error check
S3 recovery error (ICH)
Resume error F17AH
SM-RAM checksum check
Resume error F173H
Memory configuration change check
Resume error F173H
Checksum check of system BIOS RAM area
Resume error F179H
Checksum check of expansion memory
Resume error F176H
Checksum check of PnP RAM
Resume error F177H
To resume process (RESUME_MAIN)
Returns the CPU clock to “Low”
Prohibition of all SMIs
Clears resume status
Returns to ROM
Forwards the area of C0000h to EFFFFh to PCI
(prohibition of DRAM)
To resume error process
Sets resume error request
(F103h)
Copying ROM/RAM of
system BIOS
Halts, when error occurred
SMRAM initialization
WakeUp factor check
SMRAM base rewriting
and CPU state map
saving for BIOS
F104h
Permission of SMI based
on ASMI
F105h
Initialization of devices
which need initialization
before PCI bus
initialization
PIT test (at Cold boot only) and initialization
Setting of test pattern to channel 0 of PIT#0
Check whether the set test pattern can be
read.
Initialization of PIT channel 0 (Setting of timer
interruption interval to 55ms)
Initialization of PIT channel 2(Setting of the
sound generator frequency to 664Hz)
Test of PIT channel 1 (Check whether the refresh
signal works properly in 30 micro-s refresh
interval.) The system halts when the time is out.
Test of PIT channel 2 (Check whether the speaker
gate works properly)
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