Pentium P55-IT User Manual

Pentium

P55-IT

ISA PCI

with Onboard PCI IDE and Super Multi-I/O.

TRADEMARK

All products and company names are trademarks or registered trademarks of their respective holders.

MotherBoard

Contents

Page

Chapter 1 - Introduction ................................................ 1-1

P55-IT Board Layout............................................................ 1-2

Chapter 2 - Hardware Design......................................... 2-1

Motherboard Layout .............................................................2-1

Connectors and Jumpers.......................................................2-2

System Memory configuration ..............................................2-4

Cache Memory configuration ...............................................2-5

Integrated PCI Bridge...........................................................2-6

Chapter 3 - Award BIOS ................................................ 3-1

Standard CMOS Setup .........................................................3-2

BIOS Features Setup ............................................................3-2

Chipset Features Setup .........................................................3-6

Power Management Setup ....................................................3-9

PCI Configuration Setup ......................................................3-11

Load Setup Defaults .............................................................3-13

Change password .................................................................3-13

IDE HDD Auto Detection.....................................................3-14

Save & Exit Setup ............................................................... 3-16

Exit Without Saving .............................................................3-16

Chapter 4 - Onboard Technical Information ................. 4-1

I/O & Memory Map ............................................................. 4-1

Time & DMA Channels Map ............................................... 4-2

Interrupt Map ...................................................................... 4-2

RTC & CMOS RAM Map .................................................... 4-3

Appendix A: Post Codes ...................................................... 4-4

Appendix B: I/O Connector .................................................. 4-8

NOTE :

The " LOAD SETUP DEFAULTS " function loads the system default data directly from ROM and initialize associated hardware properly. This function will be necessary when you accept this motherboard, or the system CMOS data is corrupted.

ROM PCI/ISA BIOS (2A59CPA9)

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP PASSWORD SETTING

BIOS FEATURES SETUP IDE HDD AUTO DETECTION

CHIPSET FEATURES SETUP SAVE & EXIT SETUP

POWER MANAGEMENT VING

PCI CONFIGURATION SETUP

LOAD SETUP DEFAULT

ESC: QUIT :SELECT ITEM

F10:Save & Exit Setup (Shift)F2:Change Color

Load SETUP Default (Y/N)? Y

Time, Date, Hard Disk Type....

LOAD SETUP DEFAULT

Introduction 1-1

Chapter 1

Introduction

The P55-IT motherboard is a high performance system hardware based

on Intel Pentium processor and is equipped with four PCI slots, four standard ISA slots, Super Multi-I/O controller and dual ports PCI-IDE connectors for the future expansion. The hardware dimension is 220mm x 280mm with four layer design technology.

Specification

Intel Pentium Processor operating at 50/75, 60/90, 66/100, 60/120, 66/

133, 60/150, 66/166 MHz and P55C/P55CT with 321 ZIF socket 7, VRM and scalability to accept faster Pentium Processors in the feature.

Supports up to 128 MegaBytes DRAM(minimum of 8 MB) on board(72

Pins SIMM x 4), and BIOS auto DRAM/EDO RAM configuration.(Refer to Chapter 2-3 System Memory Configuration)

Supports both Fast Page DRAM or EDO DRAM SIMM. INTEL Triton 82430FX PCIset chipset. Supports Burst/Pipelined burst synchronous ( The COAST solution ) and

asynchronous L2 Write Back Cache. The cache memory combination could be 256KB/512KB (32KB*8 or 64KB*8 SRAM respectively).

Support four 16 bits ISA slots, four 32 bits PCI slots, and provides two

independent high performance PCI IDE interface capable of supporting PIO Mode 3 and Mode 4 devices. The P55-IT supports four PCI Bus Masters and a jumperless PCI INT# control scheme which reduces configuration confusion when plug in PCI I/O controller card(s).

Supports AT API (e.g. CD-ROM) devices on both IDE interface. Supports 1 floppy port(up to 2.88 MB), 1 parallel port (EPP,ECP port),

and 2 serial port (16550 Fast UART compatible).

Supports a PS/2 style mouse and standard AT style keyboard connectors.

Support Award Plug & Play BIOS . The BIOS is stored in Flash EPROM

form. It provides better upgradeability for the system.

Supports CPU Hardware sleep and SMM (System Management Mode).

Supports hardware Turbo switch as well as BIOS hot key switching.

P55-IT utilizes Lithium battery which provides environmental protection

and longer life time.

1-2 P55-IT

Keyboard BIOS

P55-IT Layout

1

SMC

37C665

1

JP15

J24 J25

JP12

J10

1 1

PS/2

MOUSE

5

COM2

COM1

K/B CONN.

1

Power Conn.

1

JP6

<

BIOS

GND

+12V

GND

VRM Socket

SPK. RESET

KEYLOCK

J1 J2 J3 J4 J5 J6 JP5 JP14

TAG SRAM (U24)

RTC

J7

Socket 7

G-LED HD-LED SLEEPTB-SW TB-LED

JP6

1

+++

PCI#4

PCI#3

Intel

82371

Intel

82437

JP9 JP7

1

Figure 1-1

PCI#2

JP1

JPS1 JPS2

81

160 80

1

SRAM Module

1

PRINTER

PCI#1

1 2 1 2

IDE 2 CONN.

1

JP21JP3

82438

J23

FDD CONN.

M 1

IDE 1 CONN.

39 40

BANK0 BANK1

82438

U28

U29

U32

U33

U34

U37

U41

U42

M 2

M 4

M 3

< <

82438

< <

< < < <

Hardware Design 2-1

Chapter 2

Hardware design

2-1 Motherboard Layout The P55-IT is designed with Intel Triton 82430FX PCIset chipset which is

developed by INTEL Corporation to fully support Intel Pentium PCI/ISA system. The Intel "Triton" 82430FX PCIset chipset prpovides increased integration and improved performance designs. The "Triton" chipset provides an integrated IDE controller with two high performance IDE interfaces for up to four IDE devices (hard devices, CD-ROM device, etc). The SMC (STANDARD MICROSYSTEMS CORPORATION) FDC37C665GT Super I/O controller provides the standard PC I/O function: floppy interface (up to 2.88 MB), two 16 Byte FIFO serial ports and EPP/ECP capable parallel port. The P55-IT layout is shown in previous page (left page) for user's reference. Care must be taken when inserting memory modules, inserting Intel P54C/P55C/P55CT processor, inserting VRM( Voltage Regulator Module) or even plugging PCI card into associated slots to avoid damaging any circuits or sockets on board. A cooling fan is strongly recommended when installing P54C/P55C processor due to possible overheat.

The P55-IT supports minimum of 8MB of System Memory and maximum of

128MB while L2 Cache can be 256KB/512KB synchronous (The COAST "CacheOn-A-STick" solution ) or asynchronous SRAM to increase system performance.( refer to Page 2-5 Cache Memory Configuration for the details.)

The P55-IT support standard Fast Page or EDO (Extended Data Out or Hyper

Page Mode) DRAM. The EDO DRAM is designed to improve the DRAM read performance (When L2 Cache is asynchronous SRAM and not installed). The

P55-IT provides four 72-pins SIMM sites for memory expansion. The socket

support 1M x 32(4MB), 2M x 32(8MB), 4M x 32(16MB), and 8M x 32(32MB) single-sided or double-sided SIMM modules. The memory timing requires 70 nS Fast page devices or 60 nS EDO DRAM. Memory parity generation and checking is not supported. (DRAM Modules may be parity[x 36] or non-parity[x 32].

The P55-IT supports Onboard two PCI IDE connectors, and detects IDE harddisk type by BIOS utility automatic.

The P55-IT supports Award Plug & Play BIOS for the ISA and PCI cards. The BIOS can be located in Flash EPROM. The advantage of having Flash EPROM is much easier to replace BIOS code if necessary.

2-2 P55-IT

2-2 Connectors and Jumpers

This section describes all of the connectors and jumpers equipped in the motherboard. Please refer to Figure 1-1 for actual location of each connector and jumper.

J1 KeyLock - Keyboard lock switch & Power LED connector.

1

1.Power LED(+)

2.N/C

3.GND

4.Keylock

5

5.GND

J2 Speaker - connect to the system's speaker for beeping.

1

1. Speaker

2. N/C

3. GND

4

4. GND

J3 Reset - Close to restart system.

J4 Turbo Switch : Open for slower speed while Close for

higher speed. A BIOS hot key <CTRL><ALT><+> also brings system to a higher speed while<CTRL> <ALT><-> set system to a slower speed(When J4 is open.).

J5 Turbo LED indicator - LED ON when higher speed is

selected.

+

J6 Power Saving LED indicator - LED ON when system is in any Saving mode.

+

J7 The Power supply of the CPU cooling fan

1 3

5

2

1,2 GND

4

3,4 +12V

6

5,6 GND

JP5 IDE LED indicator - LED ON when Onboard PCI IDE

Harddisks activites.

+

Hardware Design 2-3

JP1 CPU Install : 1-2 for Intel Pentium P54C, P54CS CPU (Default).

1

2-3 for Intel Pentium P55C/P55CT CPU.

3

JP2 Onboard IDE 1: 1-2 for Primary IDE 1 Interrupt IRQ14.

1

2-3 for None

3

JP3 Onboard IDE 2 : 1-2 for Secondary IDE 2 Interrupt IRQ15.

1

2-3 for None

3

JP14 Sleep/Resume switch : Close to enter sleep mode. A keystrobe or mouse movement (mouse driver exists). The system

will instantly "wake up".

J24 Onboard SMC's chip select : Open: Normal operation.(Default)

Close: Disable the Onboard SMC chip.

1 2 3

JP15 Keyboard Operation Clock Select : 1-2 The clock rate is depend on the system AT CLOCK ( J25 ). (Default)

2-3 The clock rate is 12MHz.

JP6 EPROM BIOS Select : 1-2 for 5V Flash EPROM (Default)

1

while 2-3 for 12V Flash EPROM.

3

J10 PS/2 MOUSE CONNECTOR:

1

5

1.RED wire

2.BLUE wire

3.GREEN wire

4.NC

5.YELLOW wire

2-4 P55-IT

JPS1 JPS2

50/75 MHz OPEN OPEN 2-3 2-3 1-2

66/100 MHz CLOSE CLOSE 2-3 2-3 2-3

60/120 MHz CLOSE OPEN 1-2 2-3 2-3

66/133 MHz CLOSE CLOSE 1-2 2-3 2-3

60/150 MHz CLOSE OPEN 1-2 1-2 2-3

1 2 3

JP7 JP9

1 2 3

J25

1 2 3

J25

If system is operating at 66/100 MHz, than PCICLK is 33Mhz.

Clock/CPU Op. JPS1 JPS2 JP7 JP9 J25

60/90 MHz CLOSE OPEN 2-3 2-3 2-3

66/166 MHz CLOSE CLOSE 1-2 1-2 2-3

* Clock is System Clock.

* CPU OP. is CPU operation at 75, 90, 100 MHz, etc.

System AT BUS CLOCK Select:

2-3 ATCLK is devided PCICLK* by 4.(Default)

* PCICLK = System Clock / 2

1-2 ATCLK is devided PCICLK* by 3.

Clock chip is IMI SC484

JP7 JP9 CLOCK Chip Frequency. 2-3 2-3 x ( 1.5 ) (Default) 1-2 2-3 x ( 2 )

2-3 1-2 x ( 3 )

1-2 1-2 x ( 2.5 )

* The JP7 and JP9 be used to setting the faster Pentium Processor in the feature.

2-3 System Memory Configuration

The P55-IT supports different type of settings for the system memory. There is no jumper nor connector needed for memory configuration. Following figures provides all possible memory cominations.

Hardware Design 2-5

2-4 Cache Memory Configuration

The second level (L2) of cache is installed in the motherboard to increase the system performance. The P55-IT supports different type of combinations for the cache installation. The COAST (Cache-On-A-STick. The cache modules has a TAG SRAM.) solution provides Onboard flexibility, allowing Onboard to accommodate 256KB and 512KB asynchronous, burst and piplined burst SRAM modules. Jumper JP10 settings is used to Onboard's DIP asynchronous SRAM for differential such combinations. Please refer to following configurations for the details.

JP10

1 2 3

U28

U29

U32

U33

U34

U37

U41

U42

U24

TAG SRAM

DATA SRAM

CACHE TAG SRAM Data SRAM Jumper Setting Size (U24) Install JP10

U18

8K8 x 1 or 32K8 x 8 256KB 16K8 x 1 or U28,29,32,33 1-2 32K8 x 1 U34,37,41,42 16K8 x 1 or 64K8 x 8 512KB 32K8 x 1 U28,29,32,33 2-3

U34,37,41,42

160

80

Note: When you have a cache module to plug into a 160-pin daul

KEY

v

Burst/Pipelined burst/Asynchronous SRAM Modules

readout connector. You must make sure that cache modules has a TAG SRAM(Care must be taken when you inserting the modules. If you can't sure whether that is a COAST solution modules or not. Please contact the modules supplier to avoid burned-out and damaging any modules circuits. ) and take off the Onboard's DIP asynchronous DATA and TAG SRAM. The BIOS can auto-detect the type and size of the SRAM modules on display System Configurations before the system boots Operating System.

81

1

2-6 P55-IT

2-5 Integrated PCI Bridge

The P55-IT utilizes Intel's Triton 82430 PCIset chipset to support Intel Pentium P54C/P54CS/P55C/P55CT Processor PCI/ISA system. The Intel Triton 82430FX PCIset chipset consists of the 82437FX Triton system controller (TSC), two 82438FX Triton Data Path (TDP) devices, and one 82371FB PCI ISA/IDE Accelerator (PIIX) bridge chip. It provides an interface which translates CPU cycle into PCI bus cycle, and PCI burst read/write capability. In addition, it provides high performance PCI arbitor to support four PCI Masters, Rotating Priority Mechanism, and Hidden Arbitration Scheme Minimizes Arbitration Overhead.

There are four interrupts in each PCI slot : INTA#, INTB#, INTC#, and INTD#. Since the P55-IT adapts the PCI auto-configuration with the system BIOS Setup utility. When the system is turned on after adding a PCI add-in card, the BIOS automatically configure interrupts, DMA channels, I/O space, and other paramaters. You do not have to configures jumpers or worry potential resource conflicts. Because PCI cards use the same interrupt resource as ISA cards, you must specify the interrupt used by ISA add-in cards in the BIOS Setup utility.

If however, a "Legacy card" (such as plug paddle card and cable into the ISA slot.) is plugged in the system, modification in the ROM SETUP UTILITY become necessary. First, enter PCI CONFIGURATION SETUP utility from ROM SETUP UTILITY main menu to set the "PCI IDE IRQ MAP TO : ISA".

Second, you must be enter CHIPSET FEATURES SETUP UTILITY from ROM SETUP UTILITY main menu and set the "Onboard Primary PCI IDE: Disabled and Onboard Secondary PCI IDE: Disabled." When you plugged the PCI/ISA IDE card into the system. You will Disabled Onboard Primary and Secondary PCI IDE from CHIPSET FEATURES SETUP UTILITY too.

Some "Legacy card" ( no paddle card and cable.) you can set the system interrupt request (IRQ) on the "Legacy card" (refer to user's manual of the card) to a proper system IRQ level (in general, card's Primary assigned to INTA and Secondary assigned to INTB). If the card is plugged into slot 1(marked PCI#1), you can not use second slot (marked PCI#2) because the Secondary INT signal takes INTB from the slot (refer to Page 3-12 for circuit diagram). The user then enter PCI CONFIGURATION SETUP utility from ROM SETUP UTILITY main menu and set the "PCI IDE IRQ MAP TO : PCI-Slot 1" (depend on the slot # where the Legacy card is plugged).

.

P55-IT 2-4-1

M1 M2 M3 M4

BANK0 Single Side DRAM BANK0,1 Dual Side DRAM

>

BANK1 Single Side DRAM BANK2,3 Dual Side DRAM

>

M1,M2(BANK 0) M3,M4( BANK 1) Total Size

1M x 32 (4 MB) Empty 8MB 1M x 32 (4 MB) 1M x 32 (4 MB) 16MB 1M x 32 (4 MB) 2M x 32 (8 MB) 24MB 1M x 32 (4 MB) 4M x 32 (16 MB) 40MB 1M x 32 (4 MB) 8M x 32 (32 MB) 72MB 2M x 32 (8 MB) Empty 16MB 2M x 32 (8 MB) 1M x 32 (4 MB) 24MB 2M x 32 (8 MB) 2M x 32 (8 MB) 32MB 2M x 32 (8 MB) 4M x 32 (16 MB) 48MB 2M x 32 (8 MB) 8M x 32 (32 MB) 80MB 4M x 32 (16 MB) Empty 32MB 4M x 32 (16 MB) 1M x 32 (4 MB) 40MB 4M x 32 (16 MB) 2M x 32 (8 MB) 48MB 4M x 32 (16 MB) 4M x 32 (16 MB) 64MB 4M x 32 (16 MB) 8M x 32 (32 MB) 96MB 8M x 32 (32 MB) Empty 64MB 8M x 32 (32 MB) 1M x 32 (4 MB) 72MB 8M x 32 (32 MB) 2M x 32 (8 MB) 80MB 8M x 32 (32 MB) 4M x 32 (16 MB) 96MB 8M x 32 (32 MB) 8M x 32 (32 MB) 128MB

NOTE : 1. P55-IT support both Fast Page DRAM or EDO DRAM SIMMs, but they cannot be mixed within the same memory bank.

4. "BANK' = 64 Bit = M1, M2 = M3, M4

2. SIMMs may be parrity(x 36) or non parity (x 32).

3. The 70nS Fast Page Mode or 60nS EDO DRAM is necessary.

AWARD BIOS 3-1

CHAPTER 3

AWARD BIOS SETUP

Award's ROM BIOS provides a built-in Setup program which allows user modify the basic system configuration and hardware parameters. The modified data will be stored in a battery-backed CMOS RAM so data will be retained even when the power is turned off. In general, the information saved in the CMOS RAM stay unchanged unless there is configuration change in the system, such as hard drive replacement or new equipment is installed.

It is possible that CMOS had a battery failure which cause data lose in CMOS_RAM. If so, re_enter system configuration parameters become necessary.

To enter Setup Propgram

Power on the computer and press <Del> key immediately will bring you into BIOS CMOS SETUP UTILITY.

ROM PCI/ISA BIOS (2A59CPA9)

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP PASSWORD SETTING

BIOS FEATURES SETUP IDE HDD AUTO DETECTION

CHIPSET FEATURES SETUP SAVE & EXIT SETUP

POWER MANAGEMENT SETUP EXIT WITHOUT SAVING

PCI CONFIGURATION SETUP

LOAD SETUP DEFAULTS

ESC: QUIT :SELECT ITEM F10:Save & Exit Setup (Shift)F2:Change Color

Time, Date, Hard Disk Type....

Figure 3-1 CMOS SETUP UTILITY

The menu displays all the major selection items and allow user to select any one of shown item. The selection is made by moving cursor (press any direction key ) to the item and press 'Enter' key. An on_line help message is displayed at the bottom of the screen as cursor is moving to various items which provides user better understanding of each function. When a selection is made, the menu of selected item will appear so the user can modify associated configuration parameters.

3-2 CHAPTER 3

3-1 STANDARD CMOS SETUP

Choose "STANDARD CMOS SETUP" in the CMOS SETUP UTILITY Menu (Fig.3-1). The STANDARD CMOS SETUP allows user to configure system setting such as current date and time, type of hard disk drive installed in the system, floppy drive type, and the type of display monitor. Memory size is auto_detected by the BIOS and displayed for your reference. When a field is highlighted (direction keys to move cursor and <Enter> key to select), the entries in the field will be changed by pressing <PgDn> or <PgUp> keys or user can enter new data directly from the keyboard.

ROM PCI/ISA BIOS (2A59CPA9)

STANDARD CMOS SETUP AWARD SOFTWARE, INC.

Date (mm:dd:yy) :Sat, Jul 01 1995 Time (hh:mm:ss) :8:30:50 Daylight Saving :Disabled HARD DISKS TYPE SIZE CYLS HEAD PRECOMP LANDZONE SECTORS MODE Primary Master : Auto 0 0 0 0 0 0 LBA Primary Slave : Auto 0 0 0 0 0 0 Normal Secondary Master : Auto 0 0 0 0 0 0 Normal Secondary Slave : Auto 0 0 0 0 0 0 Normal

Drive A : 1.2M,5.25 in. Drive B : None

Video : EGA/VGA Halt On : All Errors

Base Memory : 640K

Extended Memory : 15360K

Other Memory : 384K

Total Memory : 16384K

ESC : QUIT :SELECT ITEM PU/PD/+/-:Modify

F1 : Help (Shift)F2 :Change Color F3:Toggle Calender

Figure 3-2 STANDARD CMOS SETUP

NOTE: If hard disk Primary Master/Slave and Secondary Master/Slave were used Auto, than the hard disk size and model will be auto-detect on display during POST.

NOTE: The "Halt On :" field is to determine when to halt the system by the BIOS if error occurred during POST.

3-2 BIOS FEATURES SETUP

Select the "BIOS FEATURES SETUP " option in the CMOS SETUP UTILITY menu allows user to change system related parameters in the displayed menu. This menu shows all of the manufacturer's default values of P55-IT. Again, user can move the cursor by pressing direction keys and <PgDn> or <PgUp> keys to modify the parameters. Pressing [F1] key to display help message of the selected item.

This setup program also provide 2 convinent ways to load the default parameter data from BIOS[F6] or CMOS[F7] area if shown data is corrupted. This provide the system a capability to recover from any possible error.

AWARD BIOS 3-3

ROM PCI/ISA BIOS (2A59CPA9)

BIOS FEATURES SETUP

AWARD SOFTWARE, INC.

Virus Warning : Disabled Video BIOS Shadow : Enabled CPU Internal Cache : Enabled C8000-CBFFF Shadow : Disabled External Cache : Enabled CC000-CFFFF Shadow : Disabled Quick Power On Self Test : Enabled D0000-D3FFF Shadow : Disabled Boot Sequence : A,C D4000-D7FFF Shadow : Disabled Swap Floppy Drive : Disabled D8000-DBFFF Shadow : Disabled Boot Up Floppy Seek : Enabled DC000-DFFFF Shadow : Disabled Boot Up NumLock Status : On Boot UP System Speed : Low Gate A20 option : Fast Typematic Rate Setting : Disabled Typematic Rate (Chars/Sec) : 6 Type matic Delay (Msec) : 250 Security Option : Setup

Esc : Quit : Select Item

F1 : Help PU/PD/+/- : Modify F5 : Old Values (Shift)F2 : Color F6 : Load BIOS Defaults F7 : Load Setup Defaults

Figure 3-3 BIOS FEATURES SETUP

Note: The Security Option contians "setup" and "system". The "setup" indicates

that the password setting is for CMOS only while the " system" indicates the password setting is for both CMOS and system boot up procedure.

Virus Warning: This category flashes on the screen. During and after the system boots up, any attempt to write to the boot sector or partition table of the hard disk drive will halt the system and the following error message will appear, in the mean time, you can run an anti-virus program to locate the problem. Default value is Disabled Enabled : Activates automatically when th e system boots up causing a warning message to appear when anything attempts to access the boot sector or hard disk partition table. Disabled: No warning message to appear when anything attempts to access the boot sector or hard disk partition table.

CPU Internal Cache / External Cache:These two categories speed up memory access. However, it depends on CPU/chipset design. The default value is Enable. If your CPU without Internal Cache then this item "CPU Internal Cache" will not be show.

Enabled: Enable cache. Disable : Disable cache.

Quick Power On Self Test:This category speeds up Power On Self Test (POST) after you power on the computer. If it is set to Enable, BIOS will shorten or skip some check items during POST.

Enabled : Enable quick POST. Disabled: Normal POST.

3-4 CHAPTER 3

Boot Sequence: This category determines which drive computer searches first for the DOS(Disk Operating System). Default value is A,C.

A,C : System will first search for floppy disk drive then hard disk drive. C,A : System will first search for hard disk drive then floppy disk drive.

Swap Floppy Drive: The swap floppy drive. Default value is Disabled.

Enabled : Floppy A & B will be swapped under the DOS. Disabled: Floppy A & B will be not swap.

Boot Up Floppy Seek: During POST,BIOS will determine if the floppy disk drive installed is 40 or 80 tracks. 360K type is 40 tracks while 760K, 1.2M and 1.44M are all 80 tracks. The default value is Enabled. Enabled : BIOS searches for floppy disk drive to determine if it is 40 or 80 tracks, Note that BIOS can not tell from 720K, 1.2M or 1.44M drive type as they are all 80 tracks. Disabled: BIOS will not search for the type of floppy disk drive by track number. Note that there will not be any warning message if the drive installed is 360K.

Boot Up NumLock Status: The default value is On.

On : Keypad is number keys. Off : Keypad is arrow keys.

Boot UP System Speed: It selects the default system speed, the speed that the system will run at immediately after power up.

High: Set the speed to high. Low : Set the speed to low. NOTE: The board default value is LOW in the field. Boot the system to controller

turbo or De-turbo by Onboard J4 (Turbo Switch). Gate A20 Option: The default value is Fast.

Normal: The A20 signal is controlled by keyboard controller or chipset hardware. Fast : Default : Fast.The A20 signal is controlled by Port 92 or chipset specific

method. Typematic Rate Setting: This determines the typematic rate.

Enabled : Enable typematic rate and typematic delay programming. Disabled: Disable typematic rate and typematic delay programming. The system

BIOS will use default value of this 2 items and the default is controlled by keyboard.

Typematic Rate(Chars/Sec):

6 : 6 characters per second. 8 : 8 characters per second. 10: 10 characters per second. 12: 12 characters per second. 15: 15 characters per second. 20: 20 characters per second. 24: 24 characters per second. 30: 30 characters per second.

AWARD BIOS 3-5

Typematic Delay(Msec): When holding a key, the time between the first and second character displayed. 250 : 250msec. 500 : 500 msec. 750 : 750 msec. 1000: 1000 msec.

Security Option: This category allows you to limit access to the system and Setup, or just to Setup. The default value is Setup. System: The system will not boot and access to Setup will be denied if the correct password is not entered at the prompt. Setup : The system will boot, but access to Setup will be denied if the incorrect password is not entered at the prompt.

NOTE: To disable security, select PASSWORD SETTING at Main Menu and then you will be asked to enter password. Do not type anything and just press <Enter>, it will disable security. Once the security is disabled, the system will boot and you can enter Setup freely.

Video BIOS Shadow: It determines whether video BIOS will be copied to RAM, however, it is optional from chipset design. Video Shadow will increase the video speed.

Enabled : Video shadow is enabled. Disabled: Video shadow is disabled.

C8000 - CBFFF Shadow : CC000 - CFFFF Shadow: D0000 - D3FFF Shadow: D4000 - D7FFF Shadow: D8000 - DBFFF Shadow: DC000 - DFFFF Shadow:

These categories determine whether optional ROM will be copied to RAM by 16K byte or 32K byte per/unit and the size depends on chipset.

Enabled : Optional shadow is enabled. Disabled: Optional shadow is disabled.

3-6 CHAPTER 3

3-3 CHIPSET FEATURES SETUP

Choose the "CHIPSET FEATURES SETUP" in the CMOS SETUP UTILITY menu to display following menu.

ROM PCI/ISA BIOS (2A59CPA9)

CHIPSET FEATURES SETUP

AWARD SOFTWARE, INC.

PCI Concurrency : Disable PCI Streaming : Disabled DRAM Timing : 60ns PCI Bursting : Enabled

Onboard FDC Controller : Enabled

System BIOS Cacheable : Disabled Onboard Serial Port 2 : COM 2 Video BIOS Cachlable : Enabled Onboard Parallel Port : 278H 8 Bit I/O Recovery Time : 1 Parallel Port Mode : ECP + EPP 16 Bit I/O Recovery Time : 1 ECP Mode DMA Select : DMA3 Memory Hole At 15M-16M : Disabled IDE HDD Block Mode : Enabled IDE Primary Master PIO : Auto IDE Primary Slave PIO : Auto ESC : Quit : Select Item IDE Secondary Master PIO : Auto F1 : Help PU/PD/+/- : Modify IDE Secondary Slave PIO : Auto F5 : Old Valume (Shift )F2 : Color Onboard Primary PCI IDE : Enabled F6 : Load BIOS Defaults Onboard Secondary PCI IDE : Enabled F7 : Load Setup Defaults

PCI Slot IDE 2nd Channel : Enabled

Onboard Serial Port 1 : COM 1

Figure 3-4 CHIPSET FEATURES SETUP

Note:

If you don't use the Onboard IDE connector, than use On-card (PCI or ISA card) IDE connector. You will set Onboard Primary IDE: Disabled and Onboard Secondary IDE: Disabled from CHIPSET FEATURES SETUP UTILITY.

The Onboard PCI IDE cable should be equal to or less than

18 inches (45 cm.).

DRAM Timing: The default value is 60ns.

60ns : 2 (faster) Burst Wait State, for 60~70ns Fast Page Mode/EDO DRAM. 70ns : 3 (slower) Burst Wait State, for 70ns Fast Page Mode/EDO DRAM.

Video BIOS Cacheable: The default value is Enabled.

Enabled : This field Enabled the Video BIOS Cacheable to speed up the VGA Performance.

Disabled: Disabled the Video BIOS Cacheable function. 8/16 Bit I/O Recovery Time: The default value is 1.

8 Bit I/O Recovery Time: This field defines the recovery time from 1 to 8 for 8-bit I/O. 16 Bit I/O Recovery Time: To define the recovery time from 1 to 4 for 16-bit I/O.

AWARD BIOS 3-7

Memory Hole At 15M-16M: The default value is Disabled.

Disabled: Normal Setting. Enabled : This field enableds the main memory (15~16MB) remap to ISA BUS.

IDE HDD Block Mode: The default value is Enabled.

Enabled : Enabled IDE HDD Block Mode. The HDD transfer rate is better than Disable.

Disabled: Disable IDE HDD Block Mode. IDE Primary Master PIO: The default value is Auto.

Auto : BIOS will automatically detect the Onboard Primary Master PCI IDE HDD Accessing mode.

Mode0~4: Manually set the IDE Accessing mode. IDE Primary Slave PIO: The default value is Auto.

Auto : BIOS will automatically detect the Onboard Primary Slave PCI IDE HDD Accessing mode.

Mode0~4: Manually set the IDE Accessing mode. IDE Secondary Master PIO: The default value is Auto.

Auto : BIOS will automatically detect the Onboard Secondary Master PCI IDE HDD Accessing mode.

Mode0~4: Manually set the IDE Accessing mode. IDE Secondary Slave PIO: The default value is

Auto : BIOS will automatically detect the Onboard Secondary Slave PCI IDE HDD Accessing mode.

Mode0~4: Manually set the IDE Accessing mode. Onboard Primary PCI IDE: The default value is Enabled.

Enabled : Enable Onboard 1st channel IDE port. Disabled : Disable Onboard 1st channel IDE port. When use On-card (PCI or ISA

card) IDE connector. Onboard Secondary PCI IDE: The default value is Enabled.

Enabled : Enable Onboard 2nd channel IDE port. Disabled : Disable Onboard 2nd channel IDE port When use On-card (PCI or ISA

card) IDE connector. PCI Slot IDE 2nd Channel: The default value is Enabled.

Enabled : Enable secondary IDE port and BIOS will assign IRQ15 for this port. Disabled : Disable secondary IDE port and IRQ15 is available for other device.

PCI Concurrency: The default value is Enabled

PCI Streaming: The default value is Enabled

3-8 CHAPTER 3

PCI Bursting: The default value is Enabled.

Enabled : Enable PCI BUS Concurrency/Streaming/Bursting Access timing. Disabled : Disable PCI BUS Concurrency/Streaming/Bursting Access timing.

Onboard FDC Controller: The default value Enabled.

Enabled: Enable the Onboard SMC CHIP's floppy drive interface controller.

Disabled: Disable the Onboard SMC CHIP's floppy drive interface controller. When use On-card ISA FDC's controller.

Onboard Serial Port 1: This fields allow the user to sellect the serial port. The default value is COM1.

COM1: Enable Onboard Serial port 1 and address is 3F8H. COM2: Enable Onboard Serial port 1 and address is 2F8H. COM3: Enable Onboard Serial port 1 and address is 3E8H. COM4: Enable Onboard Serial port 1 and address is 2E8H . Disabled: Disable Onboard SMC CHIP's Serial port 1.

Onboard Serial Port 2: This fields allow the user to sellect the serial port. The default value is COM2.

COM1: Enable Onboard Serial port 2 and address is 3F8H. COM2: Enable Onboard Serial port 2 and address is 2F8H. COM3: Enable Onboard Serial port 2 and address is 3E8H. COM4: Enable Onboard Serial port 2 and address is 2E8H . Disabled: Disable Onboard SMC CHIP's Serial port 2.

Onboard Parallel port: This fields allow the user to sellect the LPT port. The default value is 378H.

378H : Enable Onboard LPT port and address is 378H. 278H : Enable Onboard LPT port and address is 278H. 3BCH : Enable Onboard LPT port and address is 3BCH. Disabled: Disable Onboard SMC CHIP's LPT port.

NOTE: Parallel Port address is 378H/3BCH that selects the rounting of IRQ7 for LPT1.

Parallel Port address is 278H that selects the rounting of IRQ5 for LPT1.

Parallel port Mode: This fields allow the user to sellect the parallel port mode.

The default value is ECP+EPP.

Normal : Standard mode. IBM PC/AT Compatible bidirectional parallel port. EPP : Enhanced Parallel Port mode. ECP : Extended Capabilities Port mode. EPP+ECP: ECP Mode & EPP Mode.

ECP Mode DMA Select: This fields allow the user to sellect DMA1 or DMA3 for the ECP mode. The default value is DMA3.

DMA1 : The filed selects the rounting of DMA1 for the ECP mode. DMA3 : The filed selects the rounting of DMA3 for the ECP mode.

AWARD BIOS 3-9

3-4 POWER MANAGEMENT SETUP

Choose the "POWER MANAGEMENT SETUP" in the CMOS SETUP UTILITY to display the following screen. This menu allows user to modify the

power management parameters and IRQ signals. In general, these parameters should not be changed unless it's absolutely necessary.

ROM PCI/ISA BIOS (2A59CPA9)

POWER MANAGEMENT SETUP

AWARD SOFTWARE, INC.

IRQ3 (COM 2) : ON

Power Management : User Define PM Control by APM : Yes PM Control by APM : V/H SYNC+Blank

Doze Mode : Disabled Standby Mode : Disabled Suspend Mode : Disabled HDD Power Down : 15 Min

IRQ3 (Wake-Up Event) : ON IRQ4 (Wake-Up Event : ON IRQ8 (Wake-Up Event) : ON IRQ12 (Wake-Up Event) : ON

Power Down Activites Esc : Quit : Select Item COM Ports Accessed : ON F5 : Old Values (Shift)F2 : Color

LPT Ports Accessed : ON F6 : Load BIOS Defaults Drive Ports Accessed : ON F7 : Load Setup Defaults

F1 : Help PU/PD/+/- : Modify

IRQ4 (COM 1) : ON IRQ5 (LPT 2) : ON IRQ6 (Floppy Disk) : ON IRQ7 (LPT 1) : OFF IRQ8 (RTC ALARM) : OFF IRQ9 (IRQ2 Redir) : ON IRQ10 (Reserved) : ON IRQ11 (Reserved) : ON IRQ12 (PS/2 Mouse) : ON IRQ13 (Coprocessor) : ON IRQ14 (Hard Disk) : ON IRQ15 (Reserved) : ON

Figure 3-5 POWER MANAGEMENT SETUP

Again, user can move the cursor by pressing direction keys to the field need to be modified and press <PgDn> or <PgUp> to alter item selection. You can only change the content of Doze Mode, Standby Mode , and Suspend Mode when the Power

Management is set to 'User Define'.

3-4-1 The Description of the Power Management

A.Power Management mode selection :

Disabled : The system operates in NORMAL conditions (Non-GREEN), and

and the Power Management function is disabled.

Max.saving: This mode will maximize the power saving capability.

Min.saving: This mode will minimize the power saving capability.

User define: Allow user to define timeout parameters to control power saveing

timing. Refer item B shown below.

3-10 CHAPTER 3

B.Timeout parameters :

HDD Standby

HDD Standby timer can be set from 1 to 15 minute(s).

System Doze

The "System Doze" mode timer starts to count when there is no "PM events" occurred. The valid timeout setting is from 1 minute up to 1 hour.

System Standby

The "Standby" mode timer starts to count when "System Doze" mode timer timed out and no "PM events" occurred. Valid range is from 1 minute up to 1 hour.

System Suspend

This function works only when the Pentium CPU is installed. The timer starts to count when "System Standby" mode timer timed out and no "PM Events" occurred. Valid range is from 1 minute up to 1 hour.

3-4-2 Description of the Green Functions

The P55-IT supports HDD Power Down, Doze and standby power saving functions when Intel Pentium Processor CPU is installed. In addition, the suspend function is supported when the JP14 (sleep ref. Figure1-1) be close to enter the green function. The detail description of these functions are provided in next page.

HDD Standby Mode

When system stop reading or wiriting HDD, the timer starts to count. The system will cut off the HDD power when timer ran out of time. The system will not resume operation until either a read from or a wirte to HDD command is executed again.

Doze Mode

The system hardware will drop down CPU clock from nomal working speed when Doze mode timeout occurred.

Standby Mode

When the system standby mode timer ran out, it will enter the standby mode and retain CPU at slow working speed. The screen will be blanked out.

Suspend Mode

When the system suspend timer time out, the system will enter the suspend mode and the chipset will stop CPU clock immediately. The power consunption in Suspend Mode is lower than in standby mode. The screen is also blanked out.

AWARD BIOS 3-11

PM Events:

AWARD BIOS defines 15 PM Events in the power management mode (Doze, standby & suspend). The user can initial any PM Events to be "Enable" or "Disable". When the system detects all of the enabled events do not have any activity, it will start the system Doze timer first if the "Power Management" isn't "Disabled". Once the system Doze timer timed out, it will process doze power saving procedure by starting the system standby timer. When the standby timer ran out and all of the "Enabled" events remains silent, the system will enter the standby mode. By now, the system will not only process the standby power saving procedures but also start the system suspend timer. When the suspend timer time out , all of the CPU clock will be stopped by dropping system clock down to zero and remains this way until any one of the "Enabled" event occurred.

3-5 PCI CONFIGURATION SETUP

The PCI configuration program is for the user to modify the PCI IRQ signals when various PCI cards are inserted in the PCI slots.

WARNING : Any misplacing IRQ could cause system hang up.

ROM PCI/ISA BIOS (2A59CPA9)

PCI CONFIGURATION SETUP

AWARD SOFTWARE, INC.

PnP BIOS Auto-config : Disabled

Slot 1 Using INT# : AUTO Slot 2 Using INT# : AUTO Slot 3 Using INT# : AUTO Slot 4 Using INT# : AUTO

1st Available IRQ : 10 2nd Available IRQ : 11 3rd Available IRQ : 9 4th Available IRQ : 5 PCI IRQ Actived By : Level PCI IDE IRQ Map to : PCI-AUTO Primary IDE INT# : A Secondary IDE INT# : B

ESC : Quit : Select Item F1 : Help PU/PD/+/- : Modify F5 : No Change (Shift) F2 : Color F6 : Load BIOS Defaults F7 : Load Setup Defaults

Figure 3-6 PCI CONFIGURATION SETUP

3-12 CHAPTER 3

PnP BIOS Auto-Config: This filed is Used to chose about the BIOS to set up the Legacy. ISA cards (ISA Card which do not have plug and play functions), PCI cards and ISA Plug and Play cards without conflicting, The default value is Disabled.

Enabled: The BIOS will depend upon information provided Plug and Play software

(Configuration Manager and ISA Configuration Utility (ICU)) to ensure

that there are no conflict with Legacy ISA cards.

Note that run the ICU and provide the information of Legacy ISA cards. The

ICU will update and save that information to the ESCD (Extend System Configuration Data). When your system is configured with ICU and they are used, than press the keyboard <CTRL>+<ALT>+<DEL> to performs a system software reset. Booting the computer and press <DEL> immediately to enter PCI configuration Setup and set the PnP BIOS Auto-Config : Enabled. There fileds (1st, 2st, 3st and 4st. Available IRQ: 10,11,9 and 5) below no display in this PCI Configuration Setup. Option the "SAVE & EXIT SETUP" bring to reboot the system.

Disabled:If Disabled is chose, than the user should not install and use Plug and Play software (Configuration Manager and ISA Configuration Utility (ICU)). But the BIOS will depend upon there fileds (1st, 2st, 3st and 4st Available IRQ:10,11,9 and 5) below selected by the user to prevent conflicts between legacy ISA cards and Plug and Play cards.

When you have true PCI card(s) plugged into the system, you will not need to change any thing here in the SETUP program. However, if you do not know whether you have true PCI card or not, please refer to your PCI card user's manual for the details.

When you have a Legacy card (describbed in section 2-5) to be plugged into the system,a proper setting is extremely important or it may cause the system hang up. The diagram shown below tells you how the Rotating Priority Mechanism is designed.

PCI#4

INTB

INTC

INTD INTA

INTC

INTB

INTD

INTC

PCI#1PCI#2PCI#3

INTA

INTBINTAINTD

INTCINTBINTA INTD

INTA

INTB

INTC

INTD

PCI

Chipset

Figure 3-7 The Combination of PCI INT# lines

AWARD BIOS 3-13

3-6 LOAD SETUP DEFAULTS

The "LOAD SETUP DEFAULTS" function loads the system default data directly from ROM and initialize associated hardware properly. This function will be necessary only when the system CMOS data is corrupted.

ROM PCI/ISA BIOS (2A59CPA9)

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP PASSWORD SETTING

BIOS FEATURES SETUP IDE HDD AUTO DETECTION

CHIPSET FEATURES SETUP SAVE & EXIT SETUP

POWER MANAGEMENT SAVING

LOAD SETUP DEFAULT

ESC: QUIT :SELECT ITEM

F10:Save & Exit Setup (Shift)F2:Change Color

Figure 3-8 LOAD SETUP DEFAULT

Load SETUP Default (Y/N)? Y

Time, Date, Hard Disk Type....

3-7 CHANGE PASSWORD

To change the password, choose the "PASSWORD SETTING" option from the CMOS SETUP UTILITY menu and press [Enter].

NOTE : Either "Setup" or "System" must be selected in the "Security Option" of the

FEATURES SETUP menu (Refer to Figure 3-3 for the details).

1. If CMOS is corrupted or the option was not used, a default password stored in the ROM will be used. The screen will display the following message:

Enter Password:

Press the [Enter] key to continue after proper password is given.

2. If CMOS is corrupted or the option was used earlier and the user wish to change default password, the SETUP UTILITY will display a message and ask for a confirmation.

Confirm Password:

3. After pressing the [Enter] key (ROM password if the option was not used) or current password (user-defined password), the user can change the password and store new one in CMOS RAM. A maximum of 8 characters can be entered.

3-14 CHAPTER 3

3-8 IDE HDD AUTO DETECTION

The "IDE HDD AUTO DETECTION" utility is a very useful tool especially when you do not know which kind of hard disk type you are using. You can use this utility to detect the correct disk type installed in the system automatically. But now you can set HARD DISK TYPE to Auto in the STANDARD CMOS SETUP. You don't need the "IDE HDD AUTO DETECTION" utility. The BIOS will Auto-detect the hard disk size and model on display during POST.

ROM PCI/ISA BIOS (2A59CPA9)

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

HARD DISKS TYPE SIZE CYLS HEADS PRECOMP LANDZONE SECTORS MODE

Primary Master : 343 665 16 65535 664 63 NORMAL Primary Slave : Secondary Master : Secondary Slave :

Select Secondary Slave Option (N=Skip) : N

OPTIONS SIZE CYLS HEAD PRECOMP LANDZ SECTOR MODE

1 (Y) 0 0 0 0 0 0 NORMAL

ESC : Skip

Figure 3-9 IDE HDD AUTO DETECTION

NOTE: HDD Modes

The Award BIOS supports 3 HDD modes : NORMAL, LBA & LARGE NORMAL mode Generic access mode in which neither the BIOS nor the IDE controller will make any transformations during accessing. The maximum nunber of cylinders, head & sectors for NORMAL mode are. 1024, 16 & 63. no. Cyclinder (1024) x no. Head ( 16) x no. Sector ( 63) x no. per sector ( 512) 528 Megabytes If user set his HDD to NORMAL mode, the maximum accessible HDD size will be 528 Megabytes even though its physical size may be greater than that!

AWARD BIOS 3-15

LBA (Logical Block Addressing) mode

A new HDD accessing method to overcome the 528 Megabyte bottleneck. The number of cylinders, heads & sectors shown in setup may not be the number physically contained in the HDD.

During HDD accessing, the IDE controller will transform the logical address described by sector, head & cylinder into its own physical address inside the HDD.

The maximum HDD size supported by LBA mode is 8.4 Gigabytes which is obtained by the following formula:

no. Cyclinder (1024) x no. Head ( 255) x no. Sector ( 63) x bytes per secttor ( 512)

8.4 Gigabytes

LARGE mode

Extended HDD access mode supported by Award Software.

Some IDE HDDs contain more than 1024 cylinder without LBA support (in some cases, user do not want LBA). The Award BIOS provides another alternative to support these kinds of LARGE mode:

CYLS. HEADS SECTOR MODE 1120 16 59 NORMAL 560 32 59 LARGE

BIOS tricks DOS (or other OS) that the number of cylinders is less than 1024 by dividing it by 2. At the same time, the number of heads is nultiplied by 2. Areverse transformation process will be made inside INT 12h in order to access the right HDD address the right HDD address!

Maximum HDD size:

no. Cyclinder (1024) x no. Head ( 32) x no. Sector ( 63) x bytes per sector ( 512) 1 Gigabytes

3-16 CHAPTER 3

Note: To support LBA or LARGE mode of HDDs, there must be some

softwares involved. All these softwares are located in the Award HDD Service Routine (1NT 13h). It may be failed to access a HDD with LBA (LARGE) mode selected if you are running under a Operating System which replaces the whole 1NT 13h. UNIX operating systems do not support either LBA or LARGE and must

utility the Standard mode. UNIX can support drives larger than 528MB.

3-9 SAVE & EXIT SETUP

The "SAVE & EXIT SETUP" option will bring you back to boot up procedure with all the changes you just made which are recorded in the CMOS RAM.

3-10 EXIT WITHOUT SAVING

The "EXIT WITHOUT SAVING" option will bring you back to normal boot up procedure without saving any data into CMOS RAM. All of the old data in the CMOS will not be destroyed.

TECHNICAL INFORMATION 4-1

Chapter 4

Technical Information

4-1 I/O & MEMORY MAP

MEMORY MAP Address Range Size Description

[00000-7FFFF] 512K Conventional memory [80000-9FBFF] 127K Extended Conventional memory [9FC00-9FFFF] 1K Extended BIOS data area if PS/2 mouse is installed [A0000-C7FFF] 160K Available for Hi DOS memory [C8000-DFFFF] 96K Available for Hi DOS memory and adapter ROMs [E0000-EEFFF] 60K Available for UMB [EF000-EFFFF] 4K Video service routine for Monochrome & CGA adaptor [F0000-F7FFF] 32K BIOS CMOS setup utility [F8000-FCFFF] 20K BIOS runtime service routine (2) [FD000-FDFFF] 4K Plug and Play ESCD data area [FE000-FFFFF] 8K BIOS runtime service routine (1)

I/O MAP [000-01F] DMA controller.(Master)

[020-021] INTERRUPT CONTROLLER.(Master) [022-023] CHIPSET control registers. I/O ports. [040-05F] TIMER control registers. [060-06F] KEYBOARD interface controller.(8042) [070-07F] RTC ports & CMOS I/O ports. [080-09F] DMA register. [0A0-0BF] INTERRUPT controller.(Slave) [0C0-0DF] DMA controller.(Slave) [0F0-0FF] MATH COPROCESSOR. [1F0-1F8 ] HARD DISK controller. [278-27F] PARALLEL port 2. [2B0-2DF] GRAPHICS adapter controller. [2F8-2FF] SERIAL port 2. [360-36F] NETWORK ports. [378-37F] PARALLEL port 1. [3B0-3BF] MONOCHROME & PARALLEL port adapter. [3C0-3CF] EGA adapter. [3D0-3DF] CGA adapter. [3F0-3F7] FLOPPY DISK controller. [3F8-3FF] SERIAL port 1.

4-2 CHAPTER 4

4-2 TIME & DMA CHANNELS MAP

TIME MAP: TIMER Channel 0 System timer interrupt.

TIMER Channel 1 DRAM REFRESH request. TIMER Channel 2 SPEAKER tone generator.

DMA CHANNELS : DMA Channel 0 Available.

DMA Channel 1 Onboard ECP (Option). DMA Channel 2 FLOPPY DISK (SMC CHIP). DMA Channel 3 Onboard ECP (default). DMA Channel 4 Cascade for DMA controller 1. DMA Channel 5 Available. DMA Channel 6 Available. DMA Channel 7 Available.

4-3 INTERRUPT MAP

NMI: Parity check error.

IRQ (H/W): 0 System TIMER interrupt from TIMER 0.

1 KEYBOARD output buffer full. 2 Cascade for IRQ 8-15. 3 SERIAL port 2. 4 SERIAL port 1. 5 PARALLEL port 2. 6 FLOPPY DISK (SMC CHIP). 7 PARALLEL port 1. 8 RTC clock. 9 Available. 10 Available. 11 Available. 12 PS/2 Mouse. 13 MATH coprocessor. 14 Onboard HARD DISK(IDE1) channel. 15 Onboard HARD DISK(IDE2) channel.

TECHNICAL INFORMATION 4-3

4-4 RTC & CMOS RAM MAP

RTC & CMOS : 00 Seconds.

01 Second alarm. 02 Minutes. 03 Minutes alarm. 04 Hours. 05 Hours alarm.

06 Day of week. 07 Day of month. 08 Month. 09 Year. 0A Status register A. 0B Status register B. 0C Status register C. 0D Status register D. 0E Diagnostic status byte. 0F Shutdown byte.

10 FLOPPY DISK drive type byte. 11 Reserve. 12 HARD DISK type byte. 13 Reserve. 14 Equipment type. 15 Base memory low byte. 16 Base memory high byte. 17 Extension memory low byte. 18 Extension memory high byte. 19-2d 2E-2F 30 Reserved for ectension memory low bytw. 31 Reserved for extension memory high byte. 32 DATE CENTURY byte. 33 INFORMATION FLAG. 34-3F Reserve. 40-7F Reserved for CHIPSET SETTING DATA.

4-4 CHAPTER 4

APPENDIX A: POST CODES

ISA POST codes are typically output to port address 80h.

POST(hex) DESCRIPTION 01-02

Reserved.

C0

03

04

05

06

07

C1

C5

08

09

Turn off OEM specific cache, shadow.

1.Initialize EISA registers (EISA BIOS only).

2.Initialize all the standard devices with default values Standard devices includes.

-DMA controller (8237).

-Programmable Interrupt Controller (8259).

-Programmable Interval Timer (8254).

-RTC chip.

Reserved

1.Keyboard Controller Self-Test.

2.Enable Keyboard Interface.

Reserved.

Verifies CMOS's basic R/W functionality.

Auto-detection of onboard DRAM & Cache.

Copy the BIOS from ROM into E0000-FFFFF shadow RAM so that POST will go faster.

Test the first 256K DRAM.

OEM specific cache initialization. (if needed)

0A

0B

1.Initialize the first 32 interrupt vectors with corresponding Interrupt handlers Initialize INT no from 33-120 with Dummy (Suprious) Interrupt Handler.

2.Issue CPUID instruction to identify CPU type.

3.Early Power Management initialization. (OEM specific)

1.Verify the RTC time is valid or not.

2.Detect bad battery.

3.Read CMOS data into BIOS stack area.

4.PnP initializations including. (PnP BIOS only)

-Assign CSN to PnP ISA card.

-Create resource map from ESCD.

5.Assign IO & Memory for PCI devices. (PCI BIOS only)

POST(hex) DESCRIPTION

TECHNICAL INFORMATION 4-5

0C

0D

0E

0F

10

11

12-13

14

15

Initialization of the BIOS Data Area. (40:ON - 40:FF)

1.Program some of the Chipset's value according to Setup. (Early Setup Value Program)

2.Measure CPU speed for display & decide the system clock speed.

3.Video initialization including Monochromc, CGA, EGA/VGA. If no display device found, the speaker will beep.

1.Test video RAM. (If Monochromc display device found)

2.Show messages including.

-Award Logo, Copyright string, BIOS Data code & Part No.

-OEM specific sign on messages.

-Energy Star Logo. (Green BIOS ONLY)

-CPU brand, type & speed.

-Test system BIOS checksum. (Non-Compress Version only)

DMA channel 0 test.

DMA channel 1 test.

DMA page registers test.

Reserved.

Test 8254 Timer 0 Counter 2.

Test 8259 interrupt mask bits for channel 1.

16

17

19

1A-1D

1E

1F-29

30

31

Test 8259 interrupt mask bits for channel 2.

Reserved.

Test 8259 functionality.

Reserved.

If EISA NVM checksum is good, exccute EISA initialization. (EISA BIOS only)

Reserved.

Detect Base Memory & Extended Memory Size.

1.Test Base Memory from 256K to 640K.

2.Test Extended Memory from 1M to the top of memory.

4-6 CHAPTER 4

POST(hex) DESCRIPTION 32

33-3B

3C

3D

3E

3F-40

BF

41

42

43

1.Display the Award Plug & Play BIOS Extension message. (PnP BIOS only)

2.Program all onboard super I/O chips (if any) including COM ports, LPT ports, FDD port ... according to setup value.

Reserved.

Set flag to allow users to enter CMOS Setup Utility.

1.Initialize Keyboard.

2.Install PS2 mouse.

Try to turn on Level 2 cache. Note : Some chipset may need to turn on the L2 cache in this stage. But usually, the cache is turn on later in POST 61h.

Reserved.

1.Program the rest of the Chipset's value according to Setup. (Later Setup Value Program)

2.If auto-configuration is enabled, programmed the chipset with pre-defined Values.

Initialize floppy disk drive controller.

Initialize Hard drive controller.

If it is a PnP BIOS, initialize serial & parallel ports.

44

45

46-4D

4E

4F

50

51

Reserved.

Initialize math coprocessor.

Reserved.

If there is any error detected (such as video, kb...), show all the error messages on the screen & wait for user to press <F1> key.

1.If password is needed, ask for password.

2.Clear the Energy Star Logo. (Green BIOS only)

Write all CMOS values currently in the BIOS stack area back into the CMOS.

Reserved.

POST(hex) DESCRIPTION

TECHNICAL INFORMATION 4-7

52

53

60

61

1.Initialize all ISA ROMs.

2.Later PCI initializations. (PCI BIOS only)

-assign IRQ to PCI devices.

-initialize all PCI ROMs.

3.PnP Initialzations. (PnP BIOS only)

-assign IO, Memory, IRQ & DMA to PnP ISA devices.

-initialize all PnP ISA ROMs.

4.Program shadows RAM according to Setup settings.

5.Program parity according to Setup setting.

6.Power Management Initialization.

-Enable/Disable global PM.

-APM interface initialization.

1.If it is NOT a PnP BIOS, initialize serial & paralled ports.

2.Initialize time value in BIOS data area by translate the RTC time value into a timer tick value.

Setup Virus Protection. (Boot Sector Protection) functionality according to Setup setting.

1.Try to turn on Level 2 cache. Note : if L2 cache is already turned on in POST 3D, this part will be skipped.

2.Set the boot up speed according to Setup setting.

3.Last chance for Chipset initialization.

4.Last chance for Power Management initialization. (Green BIOS only)

5.Show the system configuration table.

62

1.Setup daylight saving according to Setup value.

2.Program the NUM Lock, typematic rate & typematic speed according to Setup setting.

63

1.If there is any changes in the hardware configuration, update the ESCD information. (PnP BIOS only)

2.Clear memory that have been used.

3.Boot system via INT 19H.

FF

System Booting. This means that the BIOS already pass the control right to the operating system.

Unexpected Errors: POST(hex) DESCRIPTION

B0

B1

If interrupt occurs in protected mode.

Unclaimed NMI occurs.

4-8 CHAPTER 4

APPENDIX B: I/O CONNECTORS

J10: PS/2 MOUSE CONNECTOR:

1

5

Pin Signal Name

1 Data (Red Wire)

2 Clock(Blue Wire) 3 GND(Green Wire) 4 NC 5 VCC(Yellow Wire)

J13,J14: Serial Ports Connector

1 6

Signal Name Pin Pin Signal Name

DCD

5 10

SIN SOUT DTR GND

J15: Parallel Port Connector

Signal Name Pin Pin Signal Name

1 14

13 26

STROBEData Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 ACJBUSY PE

SLCT

1 6 DSR 2 7 RTS 3 8 CTS 4 9 RI 5 10 N.C.

1 14 AUTO FEED 2 15 ERROR 3 16 INIT 4 17 SLCT IN 5 18 Ground 6 19 Ground 7 20 Ground 8 21 Ground 9 22 Ground 10 23 Ground 11 24 Ground 12 25 Ground 13 26 N.C.

J11: Floppy Disk Connector

Signal Name Pin Pin Signal Name

TECHNICAL INFORMATION 4-9

1 2

33 34

Ground Ground

Ground

Ground Ground Ground Ground Ground

Ground

Ground Ground Ground Ground

Ground

Ground Ground Ground

IDE1,IDE2: Primary, Secondray Connector

1 2

39 40

Signal Name Pin Pin Signal Name

Reset IDE Host Data 7 Host Data 6 Host Data 5 Host Data 4 Host Data 3 Host Data 2 Host Data 1 Host Data 0 Ground DRQ3 I/O WriteI/O ReadIOCHRDY DACK3IRQ14 Addr 1 Addr 0 Chip Select 0Activity

1 2 Ground 3 4 Host Data 8 5 6 Host Data 9 7 8 Host Data 10 9 10 Host Data 11 11 12 Host Data 12 13 14 Host Data 13 15 16 Host Data 14 17 18 Host Data 15 19 20 Key 21 22 Ground 23 24 Ground 25 26 Ground 27 28 BALE 29 30 Ground 31 32 IOCS1633 34 Ground 35 32 Addr 2 37 38 Chip Select 139 40 Ground

1 2 FDHDIN 3 4 Reserved 5 6 FDEDIN 7 8 Index 9 10 Motor Enable 11 12 Drive Select B13 14 Drive Select A15 16 Motor Enable 17 18 DIR19 20 STEP21 22 Write Data 23 24 Write Gate 25 26 Track 0027 28 Write Protect29 30 Read Data31 32 SIDE 1 SELECT33 34 Diskette