Toshiba A100 manual Chgfirma.Exe

2.4 System Board Troubleshooting			2 Troubleshooting Procedures
		Table 2-3 D port status (2/7)
	D port status	Inspection items	Details
	F005h		Saving scan code
			Setting TASK_1ms_TSC
	F006h		Controlling fan
			Initializing sound items (for BEEP)
			Enabling system speaker
			Releasing mute
			Making the volume max.
			Key input
			Disabling USB once
			Beeping
			Waiting for key-input
			Reading CHGBIOSA.EXE/CHGFIRMA.EXE
			Resetting FDC
			Setting parameters for 2HD(1.44MB) and transporting
			rate
			Setting parameters for 2DD(720KB) and transporting
			rate
			Searching CHGBIOSA.EXE in the root directory
			Calculating the start head and sector in the directory
			Read one sector
			Searching the entry “CHGBIOSA.EXE” /
			“CHGFIRMA.EXE”
			Reading the EXE header of and “CHGBIOSA.EXE” /
			“CHGFIRMA.EXE” and execute them
			When an error detected, goes to Key input.
	(F003H)		Disabling cache
			Initializing H/W( before recognizing DRAM)
			Initializing chipset
			Initializing FLUTE
	F100H		Initializing PIT channel 1( Refresh interval→30μs)
	F101H	Checking the type and size	Checking the type and size of DRAM (in Cold Boot)
		of DRAM	When DRAM size = 0, HLT.
		Testing of SM-RAM stack
			Testing of SM-RAM stack area
		area	When it can not be used for a stack , HLT.

PORTEGE A100 Maintenance Manual (960-460) 2-21