Advantech Mini-ITX AIMB-250 Series User Manual page 104

AIMB-250 Series
40.3 S4 POST Codes
Code (hex) Name
5A Early Chipset Init
5B Cmos Check
5C Chipset default Prog
5D Identify the CPU
5E Setup Interrupt Vector
Table
5F Test CMOS Interface
and Battery status
60 KBC final Init
61 Initialize Video Interface
62 Video memory test
63 Setup PS2 mouse and
test DMA
64 Test 8259
65 Init Boot Device
66 Install Boot Devices
67 Cache Init
68 PM init
69 PM final Init and issue
SMI
FF Full on
104 AIMB-250 Series User's Manual
Description
Early Initialized the super IO. Reset Video controller. Keyboard
controller init. Test the Keyboard Initilized the mouse
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 INT 00h-1Fh according
to INT_TBL. First step initialize if single CPU Onboard. Re-init KB
If support HPM, HPM get initialized Here.
Initialize first 120 interrupt vectors with SPURIOUS_INT_HDLR
and 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 Test video memory, write
sign-on message to screen. Setup shadow RAM - Enable
shadow according to Setup.
Setup PS2 Mouse and reset KB Test DMA channel 0
Test 8259 channel 1 and mask IRQ 9
Detect if mouse is present, initialize mouse, install interrupt
vectors. Special treatment to PS2 Mouse port ACPI sub-system
initializing Initialize cache controller.
Enter setup check and auto-configuration check up Initialize
floppy disk drive controller and any drives. Install FDD and setup
BIOS data area Parameters Initialize hard drive controller and
any drives. IDE device detection and install
Cache init and USB init
PM initialization
Final init Before resume