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ESM-2850
90 ESM-2850 User’s Manual
40.3 S4 POST Codes
Code (hex) Name Description
5A Early Chipset Init
Early Initialized the super IO. Reset Video controller. Keyboard
controller init. Test the Keyboard Initilized the mouse
5B Cmos Check Check Cmos Circuitry and reset CMOS
5C Chipset default Prog Program the chipset registers with CMOS values. Init onboard
clock generator
5D Identify the CPU 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.
5E Setup Interrupt Vector
Table
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.
5F Test CMOS Interface
and Battery status
Verifies CMOS is working correctly, detects bad battery. If failed,
load CMOS defaults and load into chipset.
60 KBC final Init Final Initial KBC and setup BIOS data area
61 Initialize Video Interface Read CMOS location 14h to find out type of video in use. Detect
and Initialize Video Adapter.
62 Video memory test Test video memory, write sign-on Test video memory, write
sign-on message to screen. Setup shadow RAM - Enable
shadow according to Setup.
63 Setup PS2 mouse and
test DMA
Setup PS2 Mouse and reset KB Test DMA channel 0
64 Test 8259 Test 8259 channel 1 and mask IRQ 9
65 Init Boot Device Detect if mouse is present, initialize mouse, install interrupt
vectors. Special treatment to PS2 Mouse port ACPI sub-system
initializing Initialize cache controller.
66 Install Boot Devices 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
67 Cache Init Cache init and USB init
68 PM init PM initialization
69 PM final Init and issue
SMI
Final init Before resume
FF Full on