Table - Toshiba PORTEGE M300 Maintenance Manual

2 Troubleshooting Procedures
D port status
F10Ch
FIRST_64KB_CHECK
F10Dh
INIT_INT_VECTOR
F10Eh
INIT_INDP
F10Fh
INIT_SYSTEM
F110h
INIT_DISPLAY
F111h
DISP_LOGO
F112h
SYS_MEM_CHECK
F113h
EXT_MEM_CHECK
F114h
CHK_DMA_PAGE
F117h
CHECK _DMAC
F118h
INIT_DMAC
F119h
BOOT_PASSWORD
(Waiting for completion of INIT_FDD
segmentation)
F11Ch
EX_IO_ROM_CHECK
F11Dh
PRE_BOOT_SETUP
PORTEGE M300 Maintenance Manual (960-504)
Table 2-4 Debug port error status (6/7)
Inspection items
2.4 System Board Troubleshooting
Details
(Check of first 64KB memory)
(Initialization of vectors)
(Initialization of NDP)
(Initialization of 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)
Waiting for completion of VGA chip
initialization, VGA BIOS initialization)
(Logo display)
(Conventional memory check)
(Exception check in protected mode)
(DMA Page Register check)
(DMA check)
(DMA initialization)
(Password check)
Waiting for completion of HDD initialization
Key input check while IRT
(Finish waiting for KBC initialization)
ATA priority initialization
(Option I/O ROM check)
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
2-27