2.4 System Board Troubleshooting 2 Troubleshooting Procedures
PORTEGE A200 Maintenance Manual (960-499) 2-25
Table 2-5 Debugging port status (6/7)
D port
status Contents
F10Ah Raises the task waiting for the completion of PCI_configuration.
Initializes H/W necessary after PCI configuration.
Enables power off.
Generates out put code.
F10Bh FIRST_64KB_CHECK (Memory checks of first 64KB)
F10Ch INIT_INT_VECTOR (Initialization of vector)
F10Dh INIT_NDP(Initialization of NDP)
F10Eh INIT_SYSTEM (Initialization of system)
Stores CMOS error status into IRT_ERR_STS_BUF.
Starts initializing of TIMER.
Initializes buffer for power save.
Initializes EC and reads battery information.
Renews system BIOS. (Renews model name, EDID information for LCD.)
F10Fh INIT_Display (Waiting for completion of initializing VGA chip and initializing
BIOS)
F110h DISP_LOGO (Display of LOGO)
F111h SYS_MEM_CHECK (Memory check of conventional memory)
F112h EXT_MEM_CHECK (Exception check in protect mode)
F114h Initializes conventional memory.
F115h CHK_DMA_PAGE(Check of DMA Page Register)
F116h CHECK_DMAC(Check of DMAC)
F117h INIT_DMAC (Initialization of DMA)
F118h BOOT_PASSWORD (Password check)
Waits for completion of initializing HDD
Checks key input during IRT. (waits here the completion of KBC
initialization.)
Initializes ATA priority.
Clears security buffer.
F11Bh EX_IO_ROM_CHECK (Check of optional I/O ROM)
F11Ch PRE_BOOT_SETUP
Stores the value of 40:00h.(for saving/restoring SIO)
Sets font address for resume password.
Sets the repeat parameter to USB KB.
Gets the key information pressed during IRT.
Stores T_SHADOW_RAM_SIZE.