User Guide

2 Troubleshooting Procedures 2.4 System Board Troubleshooting
Table 2-3 D port status (4/9)
D port
status
Inspection items Details
(F103h) Checking the change of memory configuration
Resume error F173H
Checking CheckSum of RAM area of system BIOS
Resume error F179H
Checking CheckSum of expanded memory (Montara)
Resume error F176H
Checking CheckSum of PnP RAM
Processing resume (RESUME_MAIN)
Processing resume error Return the CPU clock to Low
Disabling all SMI
Clearing resume status
Return to ROM
Send the area from C0000h to EFFFFh to PCI
(Disabling DRAM)
Setting up Resume error request
Copy ROM/RAM of the System BIOS
(HLT when an error occurred)
F104h SMRAM initialization Initializing SMRAM
Checking the factor of WakeUp
Rewriting the SMRAM base and Storing CPU state map
for BIOS
Enabling SMI only by ASMI
F105h PCI test (at Cold boot only) and Initialization
Setting test pattern in PIT#0 of Channel 0
Initialization of the device
Which needs initialization
before PCI BUS Initialization
Checking whether test pattern set can be read
Initializing the channel 0 of a PIT
(set 55ms for the interval of interrupt timer)
Initializing the channel 2 of a PIT
(set 664Hz frequency for sound generator)
Testing the channel 1 of a PIT
(Checking whether refresh signal works properly with
the cycle of refresh interval 30µs), HLT when timeout
Testing the channel 2 of a PIT
(Checking whether speaker gate works properly)
2-24 Satellite A50/TECRA A2 Maintenance Manual (960-478)