2 Troubleshooting Procedures 2.4 System Board Troubleshooting PORTEGE M300 Maintenance Manual (960-504) 2-27
Table 2-4 Debug port error status (6/7)D port status Inspection items Details
F10Ch FIRST_64KB_CHECK (Check of first 64KB memory)
F10Dh INIT_INT_VECTOR (Initialization of vectors)
F10Eh INIT_INDP (Initialization of NDP)
F10Fh INIT_SYSTEM (Initialization o f system)
Storing of CMOS error information to
IRT_ERR_STS_BUF
Timer initialization start
Initialization of buffers for power saving
EC initialization & Reading of battery
information
Update of system BIOS (Update of model
name and EDID information for LCD)
F110h INIT_DISPLAY Waiting for completion of VGA chip
initialization, VGA BIOS initialization)
F111h DISP_LOGO (Logo display)
F112h SYS_MEM_CHECK (Conventional memory check)
F113h EXT_MEM_CHECK (Exception check in protected mode)
F114h CHK_DMA_PAGE (DMA Page Register check)
F117h CHECK _DMAC (DMA check)
F118h INIT_DMAC (DMA initialization)
F119h (Password check)
BOOT_PASSWORD
(Waiting for completion of INIT_FDD
segmentation) Waiting for completion of HDD initialization
Key input check while IRT
(Finish waiting for KBC initialization)
ATA priority initialization
F11Ch EX_IO_ROM_CHECK (Option I/O ROM check)
F11Dh PRE_BOOT_SETUP Saving of value in 40:00h (for SIO
saving/restoring)
Setting of font address for resume
password
Setting of repeat parameter for USB KB
Acquisition of keys pressed during IRT
Storing of T_SHADOW_RAM_SIZE
Update of system resource before boot