CPUSPEED

TESTVRAM

RESET KB 8254TEST 8259MSK1 8259MSK2 8259TEST Reserved

COUNTMEM

MP INIT

USB INIT TEST MEM SHOW MP

PNP LOGO

Reserved

SHOW EZF

ONBD IO

EN SETUP

MSINSTAL CHK ACPI EN CACHE

SET CHIP

AUTO CFG

INIT FDC

CUTIRQ12

DET IDE COM/LPT DET FPU

1.Program CPU internal MTRR (P6 & PII) for 0-640K memory address.

2.Initialize the APIC for Pentium class CPU.

3.Program early chipset according to CMOS setup. Example: onboard IDE controller.

4.Measure CPU speed.

5.Invoke video BIOS.

1.Initialize multi-language

2.Put information on screen display, including Award title, CPU type, CPU speed . Reset keyboard except Winbond 977 series Super I/O chips.

Test 8254

Test 8259 interrupt mask bits for channel 1. Test 8259 interrupt mask bits for channel 2. Test 8259 functionality.

Initialize EISA slot

1.Calculate total memory by testing the last double word of each 64K page.

2.Program write allocation for AMD K5 CPU.

1.Program MTRR of M1 CPU

2.Initialize L2 cache for P6 class CPU & program CPU with proper cacheable range.

3.Initialize the APIC for P6 class CPU.

4.On MP platform, adjust the cacheable range to smaller one in case the cacheable ranges between each CPU are not identical.

Initialize USB

Test all memory (clear all extended memory to 0) Display number of processors (multi-processor platform)

1.Display PnP logo

2.Early ISA PnP initialization

-Assign CSN to every ISA PnP device.

Initialize the combined Trend Anti-Virus code.

(Optional Feature)

Show message for entering AWDFLASH.EXE from FDD (optional)

1.Initialize Init_Onboard_Super_IO switch.

2.Initialize Init_Onbaord_AUDIO switch.

Okay to enter Setup utility; i.e. not until this POST stage can users enter the CMOS setup utility.

Initialize PS/2 Mouse

Prepare memory size information for function call: INT 15h ax=E820h

Turn on L2 cache

Program chipset registers according to items described in Setup & Auto-configuration table.

1.Assign resources to all ISA PnP devices.

2.Auto assign ports to onboard COM ports if the corresponding item in Setup is set to “AUTO”.

1.Initialize floppy controller

2.Set up floppy related fields in 40:hardware.

(Optional Feature)

Enter AWDFLASH.EXE if :

-AWDFLASH is found in floppy drive.

-ALT+F2 is pressed

Detect & install all IDE devices: HDD, LS120, ZIP, DVDROM….. Detect serial ports & parallel ports.

Detect & install co-processor

P5E

A-