ix
Code(hex) Name Description
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
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
BootBlock POST Codes
Code(hex) Name Description
1 Base memory test Clear base memory area
(0000:0000--9000:ffffh)
5 KB init Initialized KBC
12 Install interrupt
vectors
Install int. vector (0-77), and
initialized 00-1fh to their
proper place
0D Init Video Video initializing
41 Init FDD
can floppy and media capacity for onboard
superIO
FF Boot Load boot sector
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