Advantech AIMB-251 Series User Manual page 101

40.2 Quick POST Codes
Code (hex) Name
65 Init onboard device
66 Early Sytem setup
67 KBC and CMOS Init
68 Video Init
69 8259 Init
6A Memory test
6B CPU Detect and IO init
6C Reserved
6D Reserved
6E Reserved
6F Reserved
70 Setup Init
71 Setup Cache Controller
Description
Early Initialized the super IO. Reset Video controller. Keyboard
controller init
Test the Keyboard Initialized the mouse Onboard audio controller
initialize if exist. Check the intergraty of the ROM, BIOS and
message Check Flash type and copy flash write/erase routines to
0F000h segments Check Cmos Circuitry and reset CMOS
Program the chipset registers with CMOS values Init onboard
clock generator
Check the CPU ID and init L1/L2 cache. Initialize first 120
interrupt vectors with SPURIOUS_INT_HDLR and 10 initialize
INT 00h-1Fh according to INT_TBL First step initialize if single
CPU onboard. Re-init KB If support HPM, HPM get initialized
here.
Verifies CMOS is working correctly, detects bad battery. If failed,
load CMOS defaults and load into chipset. Final Initial KBC and
setup BIOS data area.
Read CMOS location 14h to find out type of video in use. Detect
and Initialize Video Adapter. Test video memory, write sign-on
message to screen. Setup shadow RAM - Enable shadow
according to Setup.
Init 8259 channel 1 and mask IRQ 9
Quick Memory Test
CPU vendor specific version string and turn on all necessary CPU
features Display PnP logo and PnP early init Setup virus protect
according to Setup. If required, will auto load Awdflash.exe in
POST Initializing onboard superIO
Display setup message and enable setup functions Detect if
mouse is present, initialize mouse, install interrupt vectors.
Special treatment to PS2 Mouse port ACPI sub-system initializing
Initialize cache controller.
AIMB-251 Series User's Manual 101
User's Manual