Acer Altos R710 manual Checkpoint, Beep Code, Description

196		Appendix D: BIOS POST Checkpoint Codes
Checkpoint	Beep Code	Description
Code
B0h		Check for errors
		If (errors were found)
		beep twice
		display "F1 or F2" message
		if (F2 keystroke) go to SETUP
		if (F1 keystroke) go to BOOT
B1h		Inform RomPilot about the end of POST.
B2h		Change status bits in CMOS and/or the BIOS
		data area to reflect the fact that POST is
		complete.
B4h		One quick beep.
B5h		Turn off <Esc> and <F2> key checking.
		IF (VGA adapter is present)
		IF (OEM screen is still up)
		Note OEM screen is gone.
		Fade out OEM screen.
		Reset video: clear screen, reset cursor,
		reload
		DAC.
		ENDIF
		ENDIF
B6h		If password on boot is enabled, a call is
		made to Setup to check password. If the
		user does not enter a valid password, Setup
		does not return.
B7h		Initialize ACPI BIOS.
B9h		Clear all screen graphics before booting.
BAh		Initialize the SMBios header and sub-struc-
		tures.
BCh		Clear parity-error latch.
BDh		Display Boot First menu if MultiBoot is
		intstalled.