beautypg.com

Acer Altos R710 User Manual

Page 208

background image

Appendix D: BIOS POST Checkpoint Codes

196

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 and 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.

Checkpoint
Code

Beep Code

Description