2 Troubleshooting 2.4 System board Troubleshooting
2-28 [CONFIDENTIAL] TECRA M4 Maintenance Manual (960-521)
Table 2-3 Debug port (Boot mode) error status (7/10)
D port status Inspection items Details
(F10Ah) PCI automatic configuration Making of work for automatic configuration
Acquisition of PCI IRQ
Configuration
Saving of VGA configuration result
Task generation for waiting
PCI_CONFIGURATION
completion
Printer port setting (for models supporting
printer)
HDD initialization sequence start
Initialization of H/W needed after
PCI configuration
FDD initialization sequence start (for models
supporting built-in FDD)
Enabling power off
F10Bh
Output code generation
F10Ch FIRST_64KB_CHECK (Check of first 64KB memory)
F10Dh INIT_INT_VECTOR (Initialization of vectors)
F10Eh INIT_NDP (Initialization of NDP)
Storing of CMOS error status to
IRT_ERR_STS_BUF
Timer initialization start
EC initialization & Reading of battery
information
F10Fh
INIT_SYSTEM
(Initialization of system)
Update of system BIOS (Update of EDID
information for LCD)
F110h INIT_DISPLAY (Waiting for VGA
chip initialization completion, VGA
BIOS initialization)
F111h Calling VGA BIOS
F113h DISP_LOGO Displaying logo
F114h SYS_MEM_CHECK (boot mode) Check of convention memory
F115h EXT_MEM_CHECK (boot mode) Check of exception in the protected mode
Exception check in the protected
mode
Dport=F117h when error occurs F116h
INIT_SYS_MEM (reboot mode) Initialization of conventional memory
F118h CHK_DMA_PAGE (boot mode) Check of DMA Page Register
F119h CHECK_DMAC (boot mode) Check of DMAC
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