Toshiba A3X manual Memori Clear

2 Troubleshooting Procedures			2.4 System Board Troubleshooting
		Table 2-3 D port status (2/9)
	D port	Inspection items	Details
	status
	F007H	BTBK_ENTER_SYSTEM_BIOS
		Transition to System BIOS IRT
	BIOS Rewite process
		ICHM.D31 Initialization
		DRAM Configuration
		Permission of cache () Only for L1 cache
		MEMORI CLEAR
	F008H	BTBK_INI_MEM_END
		Transition to real moded, Copy BIOS in
		RAM
	F009H	BTBK_CHG_RAM_BIOS
		Storing key scan code
		Setting up TASK_1ms_TSC
	F00AH	BTBK_INI_VGA_END
		Controlling Fan
		Initializing sound systems (For beep	Enabling system speaker
		sound)
			Canceling mute
			Maximizing volume
		When BIOS,EC/KBC is requested to be	(Green blinks in 2s cycle (ON:1s, Off: 1s))
		rewritten
	F00BH	BTBK_CANT_UPDATE_BIOS
		Abnormal BIOS ROM	(Orange blinks in 2s cycle (ON:1s, Off: 1s))
		Key input	Disabling USB first
			Sound beep
			Waiting for key input

Loading

CHGBIOSA.EXE/CHGFIRMA.EXE

FDC RESET

Setting up the parameter for 2HD (1.44MB)

Loading first sector and Confirming the media if it is 2HD (1.44MB)

Setting up the parameter for 2DD (720KB)

Searching CHGBIOSA.EXE from route directory

Calculate starting directory head, sector

Loading route directory per sector

2-20 [CONFIDENTIAL] Satellite A50S/TECRA A3X Maintenance Manual (960-534)