Toshiba A200 manual Port Contents Status

2 Troubleshooting Procedures 2.4 System Board Troubleshooting

	Table 2-5 Debugging port status (3/7)
D port	Contents
status
F103h	Resume branch (in COLD boot only)
	No resume at CMOS error
	No resume, if resume status code is not set.
	Checks for resume error.
	ICH4-M Power Failure error? Resume error 7A h
	Checks checksum of SM-RAM.?Resume error 73H
	Checks change of memory configuration.? Resume error 73H
	Checks checksum of RAM area of system BIOS. ? Resume error 79H
	Goes to resume process (RESUME_MAIN).
	Resume error process
	Forbids all SMIs.
	Clears resume status.
	Returns to ROM.
	Forwards the area of C0000h~ EFFFFh to PCI. (Forbids DRAM)
	Sets resume error factors.
	Copies ROM/RAM of system BIOS. ? halts at error.
F104h	Initializes SM RAM.
	Checks WakeUp factor.
	Rewrites on SM RAM base and stores CPU state map.
	Permits only SMI by ASMI.

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