Filter
Top Products
2 Troubleshooting 2.4 System board Troubleshooting
Table 2-3 D port status (2/6)
D port status
Inspection items details
Key inputting
Executing CHGBIOSA Loading CHGBIOSA.EXE and CHGFIRMA.EXE
Resetting FDC
Setting parameter for 2HD and transmission rate
Reading the first sector
Setting parameter for 2DD and transmission rate
Searching CHGBIOSA.EXE in the root director
Calculating head and sector to start
Reading contents of root directory by one sector
Searching “CHGBIOSA.EXE”/ “CHGFIRMA.EXE” entry in
the sector
Reading EXE header of “CHGBIOSA.EXE”/
“CHGFIRMA.EXE”
F009h
Executing CHGBIOSA.EXE and CHGFIRMA.EXE
F100h
Initializing the Ch1 of a PIT(Refresh interval30μs)
Checking the size and type of DRAM( on Cold Booting)
Checking the size of DRAM
F101h Checking the size and type of
DRAM
Testing the stack area of
SMRAM
Testing the stack area of SMRAM
Configuring cache memory
Enabling L1 cache memory
Testing CMOS for access ( on Cold Booting)
Checking the voltage of a CMOS backup battery
Examining the checksum of CMOS
Initializing data in CMOS (1)
Setting up IRT status
F102h Checking and initializing
CMOS
Storing the size of DRAM
Checking for branch of resuming
ICH4-M Power Failure
Examining the checksum of SMRAM
Checking whether the memory configuration have been
changed
Examining the checksum of system BIOS RAM area
Conducting resuming
F103h Checking for branch of
resuming
Copying the contents of ROM
to RAM
Disabling all SMIs
2-22 PPORTEGE R100 Maintenance Manual (960-440)