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Quick post codes – AMD Socket AM2+ Quad Core Processor 790GX User Manual

Page 60

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55

94

Final Init

Final init for last micro details
before boot

95

Special KBC patch

Set system speed for boot
Setup NumLock status according to
Setup

96

Boot Attempt

Set low stack
Boot via INT 19h.

FF Boot

Quick POST Codes

Code(hex) Name

Description

65

Init onboard device

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

66

Early System setup

Check the CPU ID and init L1/L2 cache
Initialize first 120 interrupt
vectors with SPURIOUS_INT_HDLR and
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

67

KBC and CMOS Init

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.

68

Video Init

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.

69

8259 Init

Init 8259 channel 1 and mask IRQ 9

6A

Memory test

Quick Memory Test

6B

CPU Detect and IO
init

Detect CPU speed and display
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

6C Reserved

6D Reserved

6E Reserved

6F Reserved

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