Toshiba A200 manual Debug

2 Troubleshooting Procedures 2.4 System Board Troubleshooting

	Table 2-5 Debugging port status (7/7)
D port	Contents
status
F11Ch	Renews system resources right before Boot.
	Rewrites memory map of INT15h E820h function.
	Renews tables for DMI.
	Copies ACPI table to the top of expansion memory.
	Waits for the completion of writing PSC version to BIOS.
	Waits for the completion of setting clock generator. When any error, halts at
	DEBUG
	PORT=1EH.
	Releases NMI Mask.
	Checksums TIT.
	Clears flag during IRT of Runtime side.
	Renews checksum of Runtime side.
	Initializes Bluetooth.
	Checks upgrade of CPU, HDD and others.
	Checks for the maintenance card.
	Prohibits PC card not used.
	Sets the WAKEUP status data for ACPI.
	Initializes the HW right before BOOT and waits for the completion.
	Sets battery save mode.
	Sets date.
	Waits for the completion of initializing AC-Link.
	Renews DMI Wakeup factor and SM -BIOS structure table.
	Closes configuration area for PCI device.
	Cache control
	Process related to CPU
	Erases the information HW-reset from EC.
	Renews parameter block A.
	Makes the CPU clock set up by SETUP.
	Waits for motor-off of HDD disable.
	After process of PRE_BOOT_SETUP
	Clears PWRBTN_STS.
	Sets Power Button to “disable”.
	Clears PME_EN of built-in LAN.

2-26 PORTEGE A200 Maintenance Manual (960 -499)