Acer Altos R710 manual 189

		189
Checkpoint	Beep Code	Description
Code
3Ch		If CMOS is valid, load chipset registers with
		values from CMOS, otherwise load defaults
		and display Setup prompt. If Auto Configu-
		ration is enabled, always load the chipset
		registers with the Setup defaults.
3Dh		Load alternate registers with CMOS values.
		Register-table pointers are in the altreg-
		table segment.
41h		Initialize extended memory for RomPilot.
42h		Initialize interrupt vectors 0 thru 77h to the
		BIOS general interrupt handler.
45h		Initialize all motherboard devices.
46h	2-1-2-3	Verify the ROM copyright notice
47h		Initialize support for I2O by initializing glo-
		bal variables used by the I2O code. Pause
		POST table processing if a CMOS bit is set
		(for debugging).
48h		Verify that the equipment specified in the
		CMOS matches the hardware currently
		installed. If the monitor type is set to 00

then a video ROM must exist. If the monitor type is 1 or 2 set the video switch to CGA. If monitor type 3, set the video switch to mono. Also specify in the equipment byte that disk drives are installed. Set appropri- ate status bits in CMOS or the BDA if config- uration errors are found.