EPOX EP-5ATXA-M Instructions Manual

82430TX PCIset

EP-5ATXA-M

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.

The specification is subject to change without notice.

MainBoard

V023

User Notice

No part of this product, including the product and software may be reproduced, transmit­ted, transcribed, stored in a retrieval system, or translated into any language in any form
by any means with the express written permission of EPoX Computer Company (herein­after referred to as EPoX) except documentation kept by the purchaser for backup
purposes. EPoX provedes this manual "as is" without warranty of any kind, either express
or implied, including but not limited to the implied warranties or conditions of
merchantability or fitness for a particular purpose. In no event shall EPoX be liable for
any loss or profits, loss of business, loss of use or data, interruption of business or for
indirect, special incidental, or consequential damages of any kind, even if EPoX has been
advised of the possibility of such damages arising from any defect or error in the manual
or product. EPoX may review this manual from time to time without notice. For updated
BIOS, drivers, or products release information you may visit EPoX’s home page at:
http://www.epox.com.
Products mentioned in this manual are mentioned for identification purposes only. Prod­uct names appearing in this manual may or may not be registered trademarks of copy­rights of their respective companies.
The product name and revision number are both printed on the mainboard itself.

© Copyright© 1997by EPoX Computer Co., Ltd. All rights reserved.

Handling Procedures

Static electricity can severely damage your equipment. Handle the EP-5ATXA-M

and any other device in your system with care and avoid contact with components on the
card. Always work on an antistatic surface to avoid possible damage to the card from
static discharge. The packing material placed on a table top makes a good antistatic
work surface. We assume no responsibility for any damage to the EP-5ATXA-M
mainboard that results from failure to follow installation instructions or failure to observe
safety precautions.

CAUTION

The EP-5ATXA-M mainboard is subject to

damage by static electricity. Always

observe the handling procedures.

Package Checklist

Please make sure your package which should include all items listed
below. If you find any item damaged or missing items, please contact
your supplier.

One Mainboard
One manual
One IDE ribbon cable
One floppy ribbon cable

Contents

page

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

System Block Diagram ............................................. 1-3

EP-5ATXA-M Layout.............................................. 1-4

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

2-1 Overview ..................................................................2-1

2-2 Connectors and Jumpers ............................................2-3

2-3 Real Time Clock Battey Replacement ..........................2-7

2-4 System Memory Configuration ...................................2-8

2-5 Cache Memory Configuration ....................................2-9

2-6 Integrated PCI Bridge .................................................2-10

Chapter 3 - ATX Form -Factor Overview

3-1 External Madem Ring-in Power-On and Keyboard Power-

On Functions ................................................ 3-3

Chapter 4 - Award BIOS Setup........................................ 4-1

4-1 Standard CMOS Setup ...............................................4-2

4-2 BIOS Features Setup ..................................................4-2

4-3 Chipset Features Setup...............................................4-6

4-4 Power Management Setup ..........................................4-8

4-5 Plug & Play/PCI Configuration....................................4-11

4-6 Integrated Peripherals.................................................4-14

4-7 Load Setup Defaults ...................................................4-16

4-8 Change Supervisor or User Password .........................4-17

4-9 IDE HDD Auto Detection ...........................................4-18

4-10 HDD Low Level Format ..............................................4-20

4-11 Save & Exit Setup .......................................................4-20

4-12 Exit Without Saving ....................................................4-20

Chapter 5 - Technical Information....................................5-1

5-1 I/O & Memory Map ....................................................5-1

5-2 Time & DMA Channels Map ......................................5-2

5-3 Interrupt Map.............................................................5-2

5-4 RTC & CMOS RAM Map ...........................................5-3

Appendix A: POST Codes...................................................................5-4

Appendix B: I/O Connectors...............................................................5-8

Read me first

1. The "LOAD SETUP DEFAULTS " function loads the system default data directly from
ROM and initializes the associated hardware properly. This function is necessary
when you accept this mainboard, or the system CMOS data will corrupt.

ROM PCI/ISA BIOS

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP SUPERVISOR PASSWORD
BIOS FEATURES SETUP USER PASSWORD
CHIPSET FEATURES SETUP IDE HDD AUTO DETECTION
POWER MANAGEMENT SETUP HDD LOW LEVEL FORMAT
PNP/PCI CONFIGURA ETUP
INTEGRATED PERIPH SAVING

LOAD SETUP DEFAULTS

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

Load Setup Defaults Except Standard COMS SETUP

Load SETUP Default (Y/N)? Y

2. KBPO(KeyBoard Power On) Function : There is a basic requirement that the
" +5V SB" power of the ATX power supply must be > = 0.1A (100mA).

Please refer to chapter 3 -1 for detail.

LOAD SETUP DEFAULT

The EP-5ATXA-M mainboard is a high performance system hardware

based on Intel Pentium processor and is equipped with four PCI slots, four
standard ISA slots, a PnP Super I/O controller and two dual-port PCI-IDE
connectors for the future expansion. The hardware dimension is an ATX
form-factor that is 208mm x 305mm with a four-layer design technology.

Specification

Intel 82430TX PCIset chipset.
Intel Pentium Processor, Pentium Processor with MMXTM technology,

AMD K5/K6 and Cyrix 6x86/6x86L/6x86MX operating at 90 ~ 333 MHz(Easy
CPU CLK Setting JP3 : One Jumper Only) with 321ZIF socket 7 provides
scalability to accept faster processors in the future.

Supports an onboard Switching Voltage Regulator to increase CPU and

systems reliability.

Supports CPU Vcore Voltage 2.0V/2.2V/2.8V/2.9V/3.2V selection.

Supports up to 256 MegaBytes of DRAM (a minimum of 8 MB) on board (72­Pin SIMM x 2 and 168-Pin DIMM x 3). BIOS will autometically detect and
configure FP DRAM, EDO DRAM and SDRAM (Refer to Chapter 2-4,
System Memory Configuration).

Introduction 1-1

Chapter 1

Introduction

R

R

R

Supports Onboard Pipelined burst synchronous L2 Write Back Cache. The
cache memory is 512KB (64KB*32 SRAM).

Supports four 16-bit ISA slots and four 32-bit PCI slots and provides two
independent high performance PCI IDE interfaces capable of supporting PIO
Mode 3 and Mode 4 devices.

Supports ATAPI (e.g. CD-ROM) devices and Ultra DMA 33 Harddisk for
both IDE interfaces.

Supports 1 floppy port, 1 parallel port (EPP,ECP port), and 2 serial ports
(16550 Fast UART compatible) with PnP Super I/O chip.

Supports both PS/2 style mouse and PS/2 style AT keyboard connectors.

Supports Award Plug & Play BIOS. The BIOS is stored in Flash EPROM
form. It provides better upgradeability for the system.

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

Supports a PWR/ON connector with an ATX power supply for a Remote ON/
OFF controller, a Ring-in (External Modem only) Power-ON and a Keyboard
Power-ON and Mouse Power-ON function.

1-2 EP-5ATXA-M

Software power-down when using Windows 95.

R

Supports Resume by Alarm-Allows your system to turn on at a preselected time.
Supports USDM(Unifed System Diagnostic Manager) to monitor system CPU

Fan speed, chassis Fan Speed, CPU temperature, System temperature, CPU
Voltage and power Supply Voltage in Windows 95 or NT 4.0.

R

R

Supports YAMAHA YMF-715 Audio with 3D sound.
Supports the system power LED lights when the system is powered on and

blinks in sleep or suspend mode.
Supports the CPU chassis Fan Stop when the system in sleep or suspend

mode.(The Fan power must be Supplies by onboard J4, J5, J6 connector)
Supports the Universal Serial Bus(USB) Connector onboard.

Utilizes a Lithium battery which provides environmental protection and
longer life-time.

Supports a CPU temperature alarm sound Effect so that when CPU's cooling fan
is malfunc tioning or CPU overheats, CPU speed will automatically slow down.

Supports a dual-button configuration which consists of POWER button for Off/
On transitions and SLEEP button for Sleep/Wake transitions. The configuration
is for ACPI-defined 4-second override feature of the SLEEP button. When the
user presses the power button for less than 4 seconds, the system enters into
sleep mode. When the user presses the power button for more than 4 seconds,
the system is powered off.

Introduction 1-3

>

PB

SRAM

TAG

PCI Slots

>

Control

<

TAG Control

<

PCI BUS

Graphics

HOST BUS

MTXC

HOST Bridge

324 BGA

Port_A

Universal Serial Bus

Pentium

processor

>

>

Port_B

R

MA[11:0]
CONTROL

MD[63:0]

<

PIIX4

I/O Bridge

324 BGA

Audio

>

>

>

IDE CD-ROM

IDE HDD

BIOS

Flash EPROM

Figure 1-2 System Block Diagram

Super

I/O

ISA Slots

Serial 1

Serial 2
FDD
Printer

2-1 Overview

Hardware Design 2-1

Chapter 2

Hardware design

The EP-5ATXA-M is designed with Intel 82430TX PCIset chipset which is

developed by Intel Corporation to fully support Pentium Processor PCI/ISA system.
The Intel 82430TX PCIset chipset can increase integration and improve performance
designs. The 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
PnP Super I/O controller provides the standard PC I/O functions: a floppy interface,
two 16-byte FIFO serial ports and an EPP/ECP capable parallel port. The EP-5ATXA-
M layout is shown in the previous page for user's reference. Care must be taken
when inserting memory modules, inserting CPU or even plugging PCI card into the
associated slots to avoid damaging any circuits or sockets on board. A cooling fan is
strongly recommended when installing P54C/P54CTB/P55C (MMX)/K5/K6/6x86
(6x86L)/6x86MX processor due to possible overheat. The EP-5ATXA-M supports
CPU temperature monitor and alarm to prevent CPU's cooling fan from malfunction or
CPUoverheat. There is a heat sensor to monitor CPU temperature. If CPU overheats,
then speaker will alarm and CPU will slow down to save your data and shutdown the
system.

R

The EP-5ATXA-M supports a minimum of 8MB of system memory and a

maximum of 256MB with 512KB synchronous SRAM onboard to increase system
performance.

The EP-5ATXA-M supports standard Fast Page, EDO (Extended Data Out or

Hyper Page Mode) or synchronous DRAM. The EP-5ATXA-M provides two 72-
pin SIMM and three 168-pin DIMM sites for memory expansion. Each socket sup­ports 1M x 32 (4MB), 2M x 32 (8MB), 4M x 32 (16MB), and 8M x 32 (32MB) single­sided or double-sided memory modules. The memory timing requires 70 ns for Fast
Page devices or 60 ns for EDO DRAM. This mainboard has three 168-pin DIMM sites
to support 3.3V (power level) Unbuffered Synchronous DRAMs(SDRAM) and two
72-pin SIMM sites to support 5.0V (power level) Fast Page and EDO DRAM. Memory
parity generation and checking are not supported. (DRAM Modules may be parity[x
36] or non-parity[x 32].

The EP-5ATXA-M supports two Onboard PCI IDE connectors that can support PIO
Mode/Ultra DMA 33 device and automatically detect IDE harddisk type by BIOS
utility.

2-2 EP-5ATXA-M

The EP-5ATXA-M 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.

The EP-5ATXA-M has been designed with ATX form-factor with ATX power
connector. The mainboard layout and system block diagram are shown in Figure 1-1
and Figure 2-1.

The EP-5ATXA-M has been designed the hardware monitoring to allows you to
monitor various aspects of your system perations and status. These indlude fcatures
such as CPU temerature, system temperature, voltage and fan RPM's.

The EP-5ATXA-M Supports Yamaha YMF715B onboard design. Built-in the
OPL3(FM-synthesizer), 3D Enhanced Controller (3D Sound effect) and Sound Blaster
Game compatibility.

The EP-5ATXA-M

K/B

PS/2

MOUSE

USB

PORT

COM1

PRINTER PORT

COM2

Line-Out
Line-In
Mic

BANK2

SIMM 2

SIMM 1

83977F

Winboand

Hardware Design 2-3

EP-5ATXA-M Layout

ATX Power Conn.

J15

64K*64

BANK2

M3

BANK1

M2

J4 J5

BANK0

SOCKET 7

M1

MTXC

JP2

SRAM

6

1

IDE1

FDD1

FDD CONN.

10

5

IDE2

Secondary IDE

Primary IDE

YMF715B-S

<

BIOS

PCI#4

PCI#3

PCI#2

PCI#1

Figure 2-1

PIIX4

PW-ON

J6

JP1

1

3

2

1 25

JP3

JP13

1

J2

IR CONN

J3

5 1

26

3

J9

SLEEP SPEAKERTB-LED

G-LED RESET KEYLOCKHD-LED

2-4 EP-5ATXA-M

2-2 Connectors and Jumpers

This section describes all of the connectors and jumpers equipped in the mainboard.
Please refer to Figure 2-1 for the location of each connector and jumper.The figure
in the following means connecting pin 1&2 and means connecting pin 2&3.
Jumpers with two pins are shown as for open and for close.

JP3:CPU Clock Rate Select. (Easy-Setting-Single-Jumper)

Pentium Bus Freqency
Pentium MMX x Cyrix 6x86(L) / 6x86MX

AMD K5 / K6 Multiplier IBM 6x86(L) / 6x86MX

*

*
*

*

*
*

*

1 2

27 28

JP3
1-2 90MHz 60MHz x 1.5

3-4 100MHz 66MHz x 1.5
5-6 120MHz 60MHz x 2 6x86/L-PR150
7-8 133MHz 66MHz x 2 6x86/L/MX-PR166

9-10 75MHz x 2 6x86/L/MX-PR200
11-12 150MHz 60MHz x 2.5 6x86MX-PR166
13-14 166MHz 66MHz x 2.5 6x86MX-PR200
15-16 188MHz 75MHz x 2.5 6x86MX-PR233
17-18 200MHz 66MHz x 3 6x86MX-PR233

19-20 225MHz 75MHz x 3 6x86MX-PR266
21-22 233MHz 66MHz x 3.5 6x86MX-PR266

23-24 266MHz 66MHz x 4
25-26 300MHz 66MHz x 4.5
27-28 333MHz 66MHz x 5

*

These jumper settings are reserved for the future CPU
versions. When the future CPU versions are ready and
suitable for this mainboard, these jumper settings will be
correctly updated.

JP2 CPU Vcore voltage selection for Pentium MMX / AMD K6 / Cyrix

1 6

2.0V

2.8V

2.9V

3.2V

2.2V

5 10

6x86L or 6x86MX

1-6 : 2.0V for AMD K6 fast processor (Reserved)

(Default)

2-7 : 2.8V for Pentium MMX or Cyrix 6x86L
3-8 : 2.9V for AMD K6-PR166/PR200 or Cyrix 6x86MX
4-9 : 3.2V for AMD K6-PR233/PR266
5-10 : 2.2V for AMD K6 fast processor(Reserved)

Hardware Design 2-5

J4

1

KeyLock - Keyboard lock switch & Power LED connector.

1. Power LED(+)

2. N/C

3. GND

*The power LED lights when

the system is powered on
and blinks in SLEEP MODE
(Suspend mode).

4. Keylock

5

7

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

5. GND

7. Speaker

8. N/C

10

9. GND

10. VCC

Reset - Close to restart system.

+

+

Turbo LED indicator - LED ON when a higher speed is selected.

Harddisk LED indicator - LED ON when Onboard PCI IDE

Harddisks activites.

J9 System Power ON/OFF Switch (For ATX Power Suppply Connector)

Pressing the button once will switch the system on and enter the
SLEEP MODE(Suspend mode). While in the SLEEP MODE, a
keystrobe or mouse movement (mouse driver exists) will instantly
"wake up"the system. Pressing the button while the system is on for
more than 4 seconds will turn the system off.

Note : The button should be a momentary switch that is normally on.

J4 The Power Supply (+12V) of the CPU Cooling/Power supply /Chassis FAN:

1

J5
J6

3

1.GND

2.+12V

3.RPM's Sonsor

2-6 EP-5ATXA-M

JP1 Clear CMOS:

1

3

1-2 : Normal operation (Default)

2-3 : Clear CMOS Values
This setting allows users to clear current CMOS data and to return
to the initial data by setting the jumper to 2-3 when the system is
off. This jumper should be brought back to pin 1-2 to restore the
normal operation. Here, we strongly recommend you pull out the
power cable for safety and for avoiding damaging befor clearing
CMOS data.

JP13 Keyboard Power ON function:

1

1-2 : Enabled

3

(For the details, please refer to Chapter 3-1: Keyboard

Power On Function.)

2-3 : Disabled (Default)

J3 IrDA/ASK IR CONNECTOR:

1

1.VCC

2.NC

3.IRRX

5

4.GND

5.IRT

I/O back panel connector:

PS/2 Mouse
PS/2 KB

USB1
USB2

COM1 COM2

LPT1

Game Port

Line-Out Line-In Mic

Hardware Design 2-7

2-3

1

2

3

Real Time Clock Battery Replacement

The battery can be replaced by a Sanyo / Panasonic CR2032, or
other equivalent coin lithium battery. Please follow the steps below to
replace the battery.

1.Remove

+

+

+

2.Insert

1

2

3

+

+

+

4

+

2-4 System Memory Configuration

The EP-5ATXA-M supports different types of settings for the system memory.
There is not jumper for SDRAM hardware setting is for memory configuration. The
following figures show all possible memory combinations.

2-8 EP-5ATXA-M

SIMM2
SIMM1

DIMM3
DIMM2

DIMM1

BANK 2 5V FP / EDO DRAM

>

>
>

>

BANK 2

BANK 1

BANK 0

3.3V Synchronous DRAM
or 3.3V FP/EDO DRAM

3.3V Synchronous DRAM
or 3.3V FP/EDO DRAM

3.3V Synchronous DRAM
or 3.3V FP/EDO DRAM

Memory Configuration Table

DIMM (M1) DIMM2 (M2) DIMM3(M3) SIMM1, SIMM2 TOTAL Memery
(BANK 0) (BANK 1) (BANK 2) (BANK2) MAX. = 256MB

SDRAM SDRAM SDRAM
8MB, 16MB 8MB, 16MB 8MB, 16MB

Empty =

32MB 32MB 32MB

SDRAM SDRAM EDO/FP DRAM
8MB, 16MB 8MB, 16MB 4MB, 8MB

32MB 32MB 16MB, 64MB

SDRAM EDO/FD DRAM
8MB, 16MB 4MB, 8MB

32MB 16MB, 64MB

x 1

Empty =

x 1

x 1 x 2

Empty Empty =

x 1

x 1

x 1

x 2

Empty Empty =

Empty Empty =

SDRAM SDRAM

[ 64MB, 128MB] [64MB, 128MB] Empty Empty =

NOTE : 1. DIMM3(Bank2) & SIMM1/SIMM2(Bank2) are shared. This means that if

you use SIMM1 & 2 you can not use DIMM3(M3).

2.DIMM module specification is 3.3V / unbuffered.

SDRAM EDO/FD DRAM
8MB, 16Mb 4MB, 8MB

32MB 16MB, 64MB

SDRAM SDRAM
8MB, 16MB 8MB., 16MB

32MB 32MB

x 1 x 2

x 1 x 1

Hardware Design 2-9

DIMM Module Installation

Figure 2-2 displays the notch marks and what they should look like on your
DIMM memory module.

DIMMs have 168-pins and two notches that will match with the onboard
DIMM socket. DIMM modules are installed by placing the chip firmly into
the socket at a 90 degree angle and pressing straight down (figure 2-3) until
it fits tightly into the DIMM socket (figure 2-4).

LEFT KEY ZONE

(UNBUFFERED)

DIMM Module clip before installation

CENTER KEY ZONE
(3.3 V DRAM)

Figure 2-2

Figure 2-3

Figure 2-4

To remove the DIMM module simply press down both of the white clips on
either side and the module will be released from the socket.

DIMM Module clip after installation

2-10 EP-5ATXA-M

When you have a DIMM module to plug into a 168-pin dual readout connnector,
you must make sure that the DIMM module is 3.3V/Unbuffered to supports Intel
Pentium Processor System.

* EP-5ATXA-M Supports and extends many memory configurations on its 2 SIMM

* The 70ns Fast Page Mode or 60ns EDO is necessary.
* "BANK" = 64Bit = SIMM1, SIMM2 = DIMM1 = DIMM2

R

and 2 DIMM sites. The memory size of any configuration can be combined
flexibly. BIOS will detect your memory configurations and sizes automaticallly.

2-5 Cache Memory Configuration

The second level (L2) cache is installed in the mainboard to increase the system
performance. The EP-5ATXA-M supports 512KB piplined burst synchronous
SRAM.

U17

U16

TAG

SRAM

64K*64

DATA SRAM

2-6 Integrated PCI Bridge

Hardware Design 2-11

The EP-5ATXA-M utilizes Intel 430TX PCIset chipset to support Intel Pentium

R

Processor PCI/ISA system. The Intel 82430TX PCIset chipset consists of one
82439TX system controller (MTXC) and one 82371AB PCI ISA/IDE Accelerator
(PIIX4) bridge chip. It provides an interface which translates CPU cycle into PCI bus
cycle and PCI burst read/write capability. In addition, it provides a high performance
PCI arbiter and supports four PCI Masters, Rotating Priority Mechanism, and Hidden
Arbitration Scheme Minimizes Arbitration Overhead. The 82371AB(PIIX4) supports
PCI Specification Revision 2.1 Compliant and contains a Universal Serial Bus
interface with both host and hub control functions. EP-5ATXA-M reserves a USB
connector to provide two USB ports for serial transfer at 12 or 1.5 Mbit/sec. This
supports legacy keyboard and mouse software with USB-Base Keyboard and mouse.

There are four interrupts in each PCI slot : INTA#, INTB#, INTC#, and INTD#, since
the EP-5ATXA-M 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 configure jumpers or worry about potential resource conflicts.
Because PCI cards use the same interrupt resource as ISA cards, you must specify
the interrupts used by ISA add-in cards in the BIOS Setup utility.

If a "Legacy card" (such as plug paddle card and cable for the ISA slot.) is plugged
in the system, modification in the ROM SETUP UTILITY becomes 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 enter CHIPSET FEATURES SETUP UTILITY from ROM SETUP

UTILITY main menu and set the " Onboard Primary PCI IDE: Disabled and Onboard
Secondary PCI IDE: Disable." When you plug the PCI/ISA IDE card into the system,
You should Disable Onboard Primary and Secondary PCI IDE from CHIPSET
FEATURES SETUP UTILITY too.

When no paddle card and cable are used, 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 is assigned to INTA and Secondary is assigned
to INTB). If the card is plugged into slot 1(marked PCI#1), you cannot use the
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 enters PCI CONFIGURA-

TION SETUP utility from ROM SETUP UTILITY main menu and sets the " PCI IDE
IRQ MAP TO : PCI-Slot 1 " (It depends on the slot # where the Legacy card is

plugged).

Introduction 3-1

Chapter 3

ATX Form-Factor

Overview

The EP-5ATXA-M is base on ATX form-factor with a board size 8.2" x 12" (208mm x

305mm). The ATX from-factor is essentially an enlarged baby-AT basedboard rotated
90 degrees within an ATX chassis and uses ATX power supply. The changes make
pentium processor able to locate away from the expansion slots and all onboard I/Os
able to hold full length add-on cards. The improved features of an ATX form-factor
from a baby-AT or LPX form-factor are shown as follows (see Figure 3-1).

R

1

Enhance the ease-of-use for the system

2

Supports full length cards for ISA and PCI slots

3

Install the SIMM/DIMM Memory easily

4

Install a CPU into the socket easily

5

Greate air-flow in the chassis with ATX power Supply

Expandable I/
O

Full length
slots

Floppy / IDE
connectors close
to peripheral
bays

ATX
Power
Sup­ply

3 1/2"
Bay

Figure 3-1: Summary of ATX chassis features

5 1/4"
Bay

Single chassis fan
for system

Easy to access
SIMM memory

CPU located near
Power Supply

3-2 EP-5ATXA-M

The EP-5ATXA-M is equipped with a standard I/O back pannel featuring a serial
port, PS/2 mouse port, PS/2 keyboard port, parallel port, and secondary serial port
(refer to Figure 3-2 ).

Figure 3-2: EP-5ATXA-M I/O back panel Layout

The EP-5ATXA-M supports ATX power connector which is a single 20-PIN input
device for ATX power supply (see Figure 3-3). To implement the built-in Remote
ON/OFF function on ATX power supply, a momentary switch which is normally
open should be connected to the position JP9 as the system ON/OF button.

Based on the ATX power connector, the EP-5ATXA-M has been designed to
support both ACPI and Soft-OFF functions. According to the definition of ACPI, a
Suspense mode will be enabled while you push the J9 (system ON/OFF) button less
than 4 seconds. Nevertheless, the system will be turned off by pressing for more
than 4 seconds. Regarding the Soft-OFF(coming from the EP-5ATXA-M onboard
circuit controller), it is another way to turn off your system. Your system can be
shut down automatically by an operation system such as Windows 95.

EP-5ATXA-M

>

BOARD

>

J9

System Power ON/OFF
Switch

Figure 3-3: Simple ATX Power ON/OFF Controller

ATX
POWER
SUPPLY

Introduction 3-3

3-1 External Modem Ring-in Power ON and Keyboard Mouse

Power ON Functions

External Modem Ring-in Power-ON Function

On the basis of bounded functions in I/O chipset, the two serial ports are able to
support the External Modem Ring-in Power ON function. Once users connect the
external modem to COM1 or COM2, the EP-5ATXA-M mainboard allows them to turn
on their system through the remote and host's dial-up control.

How to work with it
Step 1:Please push the momentary switch (J5 button) to turn on your system and

then push again to hold for more than 4 seconds to shut down as soon as
you turn it on.

Step 2:you connect the external modem to the mainboard's COM1 or COM2. When

the external modem Ring-in to the system. The system will power ON in
stantly.

Keyboard/Mouse Power ON Functions

To innovate a unique feature to benefit users, we devoted ourselves to create the
easiest and most convenient way to turn on your system based on the 5.0VSB
provided by the ATX power supply. This function is available only under system
being connected to ATX power.

How to work with it:
Step 1: Please push the momentary switch (J9 button) to turn on your system Press

<Del> key immediately. This will bring you into BIOS CMOS SETUP
UTILITY. Choose the "INTEGRATED PERIPHERALS" to setting POWER
ON Function. There are 4 difference way to select power ON function. Such
as password. Hot key, Mouse Left key and Mouse right key. When the
selection is mode by moving cursor to "SAVE & EXIT SETUP". Then push
again to hold for more than 4 seconds to shut down as soon as you turn it
on.

Step 2: You can enjoy the Keyboard/Mouse Power-ON function by pressing

Keyboard or Mouse. Depand on which item by select in BIOS. After press
the keys or Mouse your system will be turned on automatically. And
through the existing Soft-OFF, your system can be powered off by Win
dows 95.

Notes:

1. Intel ATX version 2.0 specification has recommended you to use the power
supply with 0.72A(720mA). With our EP-5ATXA-M mainboard, you can
enjoy this unique feature only is the 5.0VSB standby power >= 0.1A
(100mA). However, When you use an ATX power supply which is < 0.1
(100mA), you need to set the JP13 to 2-3 in order to disable the Keyboard
Power-ON feature. Then the power supply is applicable to your system.

2. When Enabled or Disabled the Keyboard Power ON function by JP13. Make
sure to pull out the power cabled or disconnect the 20-PIN power supply.

AWARD BIOS 4-1

Chapter 4

Award BIOS Setup

Award's ROM BIOS provides a built-in Setup program which allows user to 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 a configuration change in the system, such as hard drive replacement or new equipment
change.

It is possible that the CMOS battery is dead. This will cause data lose in CMOS RAM.
If so, it is necessaiy to re-enter system configuration parameters.

To enter Setup Propgram

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

ROM PCI/ISA BIOS(2A59IPAB)

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP SUPERVISOR PASSWORD
BIOS FEATURES SETUP USER PASSWORD
CHIPSET FEATURES SETUP IDE HDD AUTO DETECTION
POWER MANAGEMENT SETUP HDD LOW LEVEL FORMAT
PNP/PCI CONFIGURATION SAVE & EXIT SETUP
INTEGRATED PERIPHERALS EXIT WITHOUT SAVING
LOAD SETUP DEFAULTS

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

The menu displays all the major selection items and allows users to select any shown
items. 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 the associated configuration parameters.

Time, Date, Hard Disk Type...

Figure 4-1 CMOS SETUP UTILITY

4-2 CHAPTER 4

4-1 Standard CMOS Setup

Choose " STANDARD CMOS SETUP" in the CMOS SETUP UTILITY Menu (Fig.4-1).
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(2A59IPAB)

STANDARD CMOS SETUP

AWARD SOFTWARE, INC.

Date (mm:dd:yy) : Wed, Apr 17 1996
Time (hh:mm:ss) : 14 : 30 : 50

HARD DISKS TYPE SIZE CYLS HEAD PRECOMP LANDZONE SECTORS MODE
Primary Master : Auto 0 0 0 0 0 0 Auto
Primary Slave : Auto 0 0 0 0 0 0 Auto
Secondary Master : Auto 0 0 0 0 0 0 Auto
Secondary Slave : Auto 0 0 0 0 0 0 Auto

Drive A : 1.44M, 3.5 in.
Drive B : None
Floppy 3 Mode Support : Disabled
Video : EGA/VGA
Halt On : All Errors

ESC : Quit : Select Item PU/PD/+/- : Modify
F1 : Help (Shift) F2 : Change Color

Base Memory : 640K
Extended Memory : 5360K
Other Memory : 384K

Total Memory : 16384K

Figure 4-2 STANDARD CMOS SETUP

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

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

4-2 BIOS Features Setup

Selecting 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 EP-5ATXA-M. 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 provides 2 convenient ways to load the default parameter data
from BIOS[F6] or CMOS[F7] area if shown data is corrupted. This provides the system
a capability to recover from any possible error.

AWARD BIOS 4-3

ROM PCI/ISA BIOS(2A59IPAB)

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, SCSI 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 : High
Gate A20 option : Fast
Typematic Rate Setting : Disabled
Typematic Rate (Chars/Sec) : 6
Type matic Delay (Msec) : 250
Security Option : Setup
PCI/VGA Palette Snoop : Disabled
OS Select For DRAM > 64MB : Non-OS2

Esc : Quit : Select Item
F1 : Help PU/PD/+/- : Modify
F5 : Old Values (Shift)F2 : Color
F7 : Load Setup Defaults

Figure 4-3 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 attempts to write to the boot sector or partition table of the hard disk
drive will halt the system and an error message will appear. You should then run an
anti-virus program to locate the virus. Keep in mind that this feature protects only the
boot sector, not the entire hard drive. Default value is Disabled.
Enabled : Activates automatically when the system boots up. If any attempts

access the boot sector, a warning message will appear.

Disabled : No warning message will appear when any attempts to access the

boot sector.

Note : Many disk diagnostic programs that access the boot sector table can trigger the
virus warning message. If you plan to run such a program, we recommend that you
disable the virus warning first.

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

Enabled: Enable cache.
Disable : Disable cache.

4-4 CHAPTER 4

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 Enabled, BIOS will shorten or skip
some check items during POST. The default is Enabled.

Enabled : Enable quick POST.
Disabled: Normal POST.

Boot Sequence:This category determines which drive is searched first for the O/S
(Operating System). Default value is A, C, SCSI. The following is your list of options.
[A, C, SCSI]-[C, A, SCSI]-[C, CDROM, A]-[CDROM, C, A]-[D, A, CDROM]
[E, A, CDROM]-[F, A, CDROM]-[SCSI, A, C]-[SCSI C, A]-[C Only]-[LS/ZIP, 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.

CDROM,C,A:System will first search for the CDROM drive (If the CDROM has a

bootable CD title.) and second search hard disk drive then flopp
disk drive.

C,CDROM,A:System will first search for the hard disk drive and second search

the CDROM drive (If the CDROM has a bootable CD title.) then
floppy disk drive.

Swap Floppy Drive: This will swap your physical drive letter A & B if you are using
two floppy disks. Default value is Disabled.

Enabled : Floppy A & B are able to swap under DOS.
Disabled: Floppy A & B are not able to swap.

Boot Up Floppy Seek: During Power-On-Self-Test (POST), BIOS will determine if the
floppy disk drive installed is 40 or 80 tracks. Only is 360K type 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 cannot 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: Control the state of the Numlock key when the system
boots. The default value is On.

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

Boot UP System Speed: Select Hight to boot at the default CPU speed; select Low to
boot at the speed of the AT bus.

High: Set the speed to high.
Low : Set the speed to low.

AWARD BIOS 4-5

Gate A20 Option: This refers to the way the system addresses memory above 1MB
(extended memory). The default value is Fast.

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

Typematic Rate Setting: This determines the keystroke repeat rate.

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

controlled by the keyboard controller in your system.

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.

Typematic Delay(Msec): This is the timing between the first and second character

displayed when holding a key.
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 the access to Setup will be denied if the correct

password is not entered at the prompt.

Setup : The system will boot, but the access to Setup will be denied if the incorrect

password is not entered at the prompt.

PCI/VGA Palette Snoop: This filed controls the ability of a primary PCI VGA

controller to share a common palette(when a snoop write cycles) with an ISA
video card. The default value is Disabled.
Enabled:When an ISA card uses a RAMDAC of PCI card, connects to a VGA

monitor, and connects to a PCI VGA card via the VESA connector.

Disabled:Disable the VGA card Palette snoop function.

Assign IRQ For VGA: The default value is Enabled.

Enabled : The system was assigned IRQ for VGA card.
Disabled: The system was not assigned IRQ for VGA card.

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.

4-6 CHAPTER 4

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

These categories determine whether other expansion card optional ROM will be
copied to RAM by 16K byte or 32K byte per unit and the size depends on chipset. If
you install other expansion cards with ROMs on them, you will need to know which
addresses the ROMs use to shadow themselves specifically.

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

4-3 Chipset Features Setup

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

ROM PCI/ISA BIOS(2A59IPAB)

CHIPSET FEATURES SETUP

AWARD SOFTWARE, INC.

Auto Configuration : Enabled CPU Warning Temperature : 60C/140F
DRAM Timing : 60ns Current cpu Temperature : 38C/100F
DRAM Leadoff Timing : 10 / 6 / 3 Current System Temp : 32C/90F
DRAM Write Burst Timing : x333 Current PWR SUP FAN Speed : 0 RPM
Fast EDO Lead Off : Enabled Current CPU FAN Speed : 5578 RPM
Refresh RAS# Assertion : 4 Clks Current Chiassis FAN Speed : 0 RPM
Fast RAS To CAS Delay : 2 Vcore(v): 2.8V Vcore(v) : 2.80V
DRAM Page Idel Timer : 2 Clks V I/O(v) : 3.50V +5(v) : 5.16V
DRAM Enhanced Paging : Enabled +12(V) : 12.28V -12(v) : 11.90V
Fast MA to RAS# Delay : 2 Clks -5(v) : 5.10V
SDRAM (CAS Lat/RAS-to-CAS) : 2/2
SDRAM Speculative Read : Disabled
System BIOS Cacheable : Disabled
Video BIOS Cacheabled : Enabled
8 Bit I/O Recovery Time : 1
16 Bit I/O Recovery Time : 2
Memory Hole At 15M-16M : Disabled
PCI 2.1 Compliance : Disabled

ESC : Quit : Select Item
F1 : Help PU/PD/+/- : Modify
F5 : Old Values (Shift) F2 : Color
F7 : Load Setup Defaults

Figure 4-4 CHIPSET FEATURES SETUP

Auto Configuration: Selects predetermined optinal values of chipset parameters.

When Disabled, chipset parameters revert to setup information stored in COMS.
Many fields in this screen are not available when Auto Configuration is Enabled.

AWARD BIOS 4-7

Note: When you insert slow memory modules in the system and set a faster timing,

the system may hang up.

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.

DRAM Leadoff Timing: The default value is 10/6/3 (Read Leadoff / Write Leadoff /
RAS# Precharge)

10/6/3 : For EDO / FPM reads and Writes timing.
11/7/3 : For slow EDO /FPM reads and Writes timing.

DRAM Writes Burst Timing: The default value is x222.

x222 : For EDO / FPM of the fast burst mode timings.
x333 : For EDO /FPM of the slow burst mode timings.

Fast EDO Lead off : The default value is Enabled.

Enabled : This field Enables fast timing EDO read cycles.
Disabled : Disables the fast timing EDO read cycles.

Refresh RAS# Assertion : The default value is 4 clks.

4 : This field controls the number of 4 clocks. RAS# is asserted for Refresh.
5 : This field controls the number of 5 clocks. RAS# is asserted for Refresh.

Fast RAS To CAS Delay : The default value is 2.

2 : This field controls a RAS# to CAS# delay is 2.
3 : This field controls a RAS# to CAS# delay is 3.

Fast MA to RAS# Delay : The default value is 2 Clks.

1 Clks : This field controls Memory Address to RAS's timing is 1 HCLKS.
2 Clks : This field controls Memory Address to RAS's timing is 1 HCLKS.

SDRAM (CAS Lat / RAS-to-CAS) : This is reserved for SDRAM only. The default
value is 2 / 2.

2/2 : The delay timing of SDRAM RAS# to CAS# is 2 HCLKS.
3/3 : The delay timing of SDRAM RAS# to CAS# is 3 HCLKS.

SDRAM Speculative Read : The default value is Disabled.

Enabled : Enables the SDRAM speculative read logic.
Disabled : Disables the SDRAM speculative read logic.

System BIOS Cacheable:

Enabled : Allows caching of the system BIOS ROM at F0000h-FFFFFh, resulting

in better system performance. However, if any program writes to this
memory area, a system error may result.

Disabled : System BIOS non-cacheable

4-8 CHAPTER 4

Video BIOS Cacheable: The default value is enabled.

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

Performance.

Disabled: Disables 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.
Memory Hole at 15M-16M: The default value is disabled.

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

This feature reserves 15MB to 16MB memory address space to ISA
expansion card that specifically requires this setting.

PCI 2.1 Compliance: The default value is Disabled.

Enabled: This field Enables the PCI 2.1 Compliance timing.
Disabled: Disables the PCI 2.1 timing.

Current CPU Temperature: This field will auto-detect the CPU temperature when
enter the CHIPSET FEATURES SETUP.

CPU Warning Temperature: The default value is 60C/140F.
The purpose of this setting is to enable the CPU temperature warning & protection

function so that we can detect and monitor the fluctuant temperature during system
operation.
If the cooling fan applied to the CPU does not have enough power to control and cool
down the heat or is broken while running, the indicator of the current CPU tempera­ture will rise.
To protect the CPU while the temperature exceeds the CPU warning temperature
setting such as 60C (the default value), the alarm will activate and CPU speed will
slow down at the same time. At this moment, you have to save your data into disks
and then shut down system to cut off the alarm.
The thermal conductibility of a CPU and the cooling fan are the two key roles to
determine whether the overheat problem will happen or not. For example, if you are
using a high performance CPU but applying a low power cooling fan, the situation
mentioned on the above will happen.
The setting value is available from 50C/122F to 70C/158F.

Current Power FAN Speed: The current power fan speed in RPMS.
Current CPU FAN Speed : The current CPU fan speed in RPMS.
Current Chassis FAN Speed : The current chassis fan speed in RPMS.
VCore (V): The voltage level of the CPU Core.
V I/O(V) : The voltage level of the CPU I/O.
+ 5(V) : The voltage level of the power Supply.
+ 12 (V) : The voltage level of the power Supply.

AWARD BIOS 4-9

4-4 Power Management Setup

Choose the "POWER MANAGEMENT SETUP" in the CMOS SETUP UTILITY
to display the following screen. This menu allows users to modify the power
management parameters and IRQ signals. In general, these parameters should not
be changed unless it is absolutely necessary.

ROM PCI/ISA BIOS (2A59IPAB)

POWER MANAGEMENT SETUP

AWARD SOFTWARE, INC.

Power Management : User Define ** Reload Global Timer Events **
PM Control by APM : Yes IRQ [3-7, 9-15], NMI : Enabled
Video off Method : V/H SYNC+Blank Primary IDE 0 : Disabled
Video off After : Standby Primary IDE 1 : Disabled
Modem Use IRQ : 3 Secondary IDE 0 : Disabled
Doze Mode : Disable Secondary IDE 1 : Disabled
Standby Mode : Disabled Floppy Disk : Disabled
Suspend Mode : Disabled Serial Port : Disabled
HDD Power Down : 15 Min Parallel Port : Disabled
VGA Active Monitor : Enabled
Soft-OFF by PWB-BTTN : Delay 4 Sec.
CPU FAN OFF In Suspend : Enabled
Resume by Alarm : Disabled

** Break Event From Suspend **
IRQ 8 Clock Event : Disabled

Figure 4-5 POWER MANAGEMENT SETUP

Again, users can move the cursor by pressing direction keys to the field needed 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'.

ESC : Quit : Select Item
F1 : Help PU/PD/+/- : Modify
F5 : Old Values (Shift) F2 : Color
F7 : Load Setup Defaults

Note: When the computer enters suspend mode (setting the suspend mode valid range
from 1 minute up to 1 hour) activated by the BIOS Power Management, you need to run
a program POWER.EXE under DOS root, or need to add DEVICE=C:\DOS\POWER.EXE
in your CONFIG.SYS. This will keep the system time updated normally when the system
wake up from the suspend mode. The supend mode for Windows 95 or Windows 3.1x

R

R

has to install windows APM feature. Choose "Advanced Power Management" item from
"system device". The "system device" field was from "system" icon in the "control
panel".

4-4-1 The Description of the Power Management

A. Power Management mode selection :
Disabled : The system operates in NORMAL conditions (Non-GREEN) and

the Power Management function is disabled.

Max. saving : Maximum power savings. Inactivity period is 1 minute in each

mode.

Min. saving : Minimum power savings. Inactivity period is 1 minute in each mode.
User Define : Allows user to define PM Timer parameters to control power

saving mode.

4-10 CHAPTER 4

B. Time-out parameters :

HDD Standby

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

System Doze

The "System Doze" mode timer starts to count when no "PM event"
occurres. The valid time-out setting is from 1 minute up to 1 hour.

System Standby

The "Standby" mode timer starts to count when the "System Doze" mode timer times
out and no "PM events" occurre. The valid range is from 1 minute up to 1 hour.

System Suspend

This function works only when the Pentium Procssor is installed. The timer starts

R

to count when the "System Standby" mode timer times out and no "PM Event"
occurres. The valid range is from 1 minute up to 1 hour.

4-4-2 Description of the Green Functions

PM controlled APM: This option shows weather or not you want the Power Manage-

ment to be controlled the Advanced Power Management (APM).
The default is Yes.

Yes: APM controls your PM
No: APM does not control your PM

Video Off Method: This option allows you to select how the video will be disabled by
the power management.
The default is V/H Sync + Blank

V/H Sync + Blank: System turns off vertical and horizontal synchronization
ports and writes blanks to the video buffer.
DPMS: Select this option if your monitor supports the Display Power Manage­ment Signaling (DPMS) standard of the Video Electronics Standards Associa­tion (VESA). Use the software supplied for your video subsystem to select video
power management values.
Blank Screen: System only writes blanks to the video buffer.

Video Off After: Tells you what time frame that the video will be disabled under
current power management settings.
The default is Standby.

Standby: Video powers off after time shown in standby mode setting.
Doze: Video powers off after time shown in doze mode setting.
Suspend: Video powers off after time shown in suspend mode setting.
N/A: Video power off not controlled by power management.

AWARD BIOS 4-11

MODEM Use IRQ: Name the interrupt request (IRQ) line assigned to the modem (if
any) on your system. Activity of the selected IRQ always awakens the system.
Default is IRQ 3.

N/A: No IRQ is used. 3: IRQ 3
4: IRQ 4 5: IRQ 5
7: IRQ 7 9: IRQ 9
10: IRQ 10 11: IRQ 11

The KP6-LA supports HDD Power Down, Doze and Standby power saving functions
when using the Intel Pentium II Processor.
The default is Disabled

Doze Mode: The "Doze" mode timer starts to count when no "PM events" have
occurred.

Standby Mode: When the standby mode timer times-out, it will enter the standby
mode and retain CPU at a slow working speed. The screen will be blanked out.

Suspend Mode: This function works only when the Pentium II Processor is installed.
The timer starts to count when "System Standby" mode timer is timed out and no
"PM Events" are occurring. Valid range is from 1 minute up to 1 hour.

HDD Power Down: HDD Standby timer can be set from 1 to 15 minute(s).
VGA Active Monitor: Use this option if your monitor has advanced power saving

features.
The default is Enabled

Enabled: Your monitor's power features will be included in power
management.
Disabled: Your monitor's power features will not be included in power
management.

Soft-Off by PWR-BTTN: Use this to select your soft-off function.
The default is Instant Off.

Instant Off: Turns off instantly.
4 Second Delay: Turns off after a 4 second delay. If momentary press of button,

the system will go into Suspend Mode. Press again to take system out of
Suspend Mode.

4-12 CHAPTER 4

Resume by Ring: This option is used to set the remote ring in feature.
The default is Enabled.

Enabled: The system can use remote ring-in to wake the system up.
Disabled: The system cannot use remote ring in to wake system up.

Power Loss Recovery: If the power to the system is cut off the system will turn
itself back on with no user intervention.
The default is Enabled.

Enabled: The system will power back on after a power interuption.
Disabled: The system will stay off after a power interuption.

Resume by Alarm: This option allows you to have the system turn on at a preset
time each day or on a certain day. This option is only available when Power Loss
Recovery is Enabled.
The default is Enabled.

Enabled: The system will turn on at the preset time.
Disabled: The system will not turn on until you turn it on.

Date (of month) Alarm: This is how you set the date that the system will turn on.
The default is 0.

0: Setting this to 0 will turn the system on everyday at the preset time.
1-31: Represents the day of the month that you need the system to turn on.

Time (hh:mm:ss) Alarm: This sets the time that you need the system to turn on.
The deault is 08:00:00.

**Reload Global Timer Events **

These options allow the user to reset the global power features timer if any of the
enabled events occur.

IRQ [3-7, 9-15], NMI: The default is Enable.
Primary IDE 0: The default is Disable.
Primary IDE 1: The default is Disable.
Secondary IDE 0: The default is Disable.
Secondary IDE 1: The default is Disable.
Floppy Disk: The default is Disable.
Serial Port: The default is Enable.
Parallel Port: The default is Disable.

AWARD BIOS 4-13

The EP-5ATXA-M supports HDD Power Down, Doze and standby power savingfunctions
when Intel Pentium Processor is installed. In addition, the suspend function

R

is supported when the JP14's sleep (sleep ref. Figure1-1) is closed to enter the green
function. The detailed descriptions of these functions are provided in the next page.

HDD Power Down

When the system stops reading or wiriting HDD, the timer starts to count. The system
will cut off the HDD power when timer runs 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 normal working speed
when Doze mode timeout occurrs.

Standby Mode

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

PM Events:

AWARD BIOS defines Reload Global Timer Events in the power management mode
(Doze,standby & suspend). The user can initialize any PM Events to be "Enabled" or
"Disabled". When the system detects all of the enabled events which 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 is 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 times out, all of the CPU clock
will stop by dropping system clock down to zero and remains this way until any one
of the "Enabled" event occurrs.

4-5 Plug & Play/PCI Configuration

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

WARNING : Any misplacing IRQ could cause system not able to pick up the rescouces.

4-14 CHAPTER 4

ROM PCI/ISA BIOS(2A59CPA9)

PNP/PCI CONFIGURATION

AWARD SOFTWARE, INC.

PNP OS Installed : NO PCI IDE IRQ Map To : PCI-AUTO
Resources Controlled By : Manual Primary IDE INT# : A
Reset Configuration Data : Disabled Secondary IDE INT# : B

IRQ-3 assigned to : Legacy ISA
IRQ-4 assigned to : Legacy ISA
IRQ-5 assigned to : PCI/ISA PnP
IRQ-7 assigned to : PCI/ISA PnP
IRQ-9 assigned to : PCI/ISA PnP
IRQ-10 assigned to : PCI/ISA PnP
IRQ-11 assigned to : PCI/ISA PnP
IRQ-12 assigned to : PCI/ISA PnP
IRQ-14 assigned to : PCI/ISA PnP
IRQ-15 assigned to : PCI/ISA PnP
DMA-0 assigned to : PCI/ISA PnP
DMA-1 assigned to : PCI/ISA PnP
DMA-3 assigned to : PCI/ISA PnP
DMA-5 assigned to : PCI/ISA PnP
DMA-6 assigned to : PCI/ISA PnP
DMA-7 assigned to : PCI/ISA PnP

ESC : Quit : Select Item

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

Figure 4-6 PCI CONFIGURATION SETUP

Resource Controlled By:The default value is Manual.
Manual :PNP Card's resources will be controlled manually. You can set which

IRQ-X and DMA-X are assigned to PCI/ISA PNP or Legacy ISA Cards.

Auto :If your ISA card and PCI card are all PNP cards, BIOS will assign the

interrupt resource automatically.

Reset Configuration Data:The default value is disabled.
Disabled:Normal Setting.
Enabled :If you had plugged some Legacuy cards in the system and recorded into

ESCD(Extended System Configuration Data), you can set this field to
enabled to clear ESCD.

PCI IDE IRQ Map To:The default value is PCI-AUTO.

When you have true PCI card(s) plugged into the system, you do not have
to change anything 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 2-6) to be plugged
into the system,a proper setting is extremely important or it may cause the
system hang. The diagram shown below tells you how the Rotating
Priority Mechanism is designed.

AWARD BIOS 4-15

Used MEM base addr and Used MEM Length : The default value is N/A.

The Used MEM base addr (CB00, CC00, D000, D400, D800, DC00) and
Used MEM Length (8K, 16K, 32K, 64K) support some specific ISA
Legacy cards with requested memory space below 1M address. Now with
these two functions, users can define where the used memory address is
located and its length of the legacy area corresponding. Based on these,
BIOS will skip the UMB area that is used by the legacy device to avoid
the memory space conflict. For example, if users select "D000"for"Used
MEM base addr" and "16K" for "Used MEM Length", that means the
address region D0000H-D3FFFH is occupied by ISA legacy cards, and
thus BIOS will not assign this region for PnP/ISA and PCI cards.

PCI#4

INTB

INTC

INTD
INTA

INTC

INTB

INTD

INTC

PCI#1PCI#2PCI#3

INTA

INTBINTAINTD

INTCINTBINTA
INTD

INTA

INTB

INTC

INTD

Figure 4-7 The Combination of PCI INT# lines

PCI

Chipset

4-16 CHAPTER 4

4-6 Integrated Peripherals

ROM PCI/ISA BIOS(2A59IPAB)

INTEGRATED PERIPHERALS

WARD SOFTWARE, INC.

IDE HDD Block Mode : Enabled Onboard Parallel Mode : ECP / EPP
IDE Primary Master PIO : Auto ECP Mode Ise DMA : 3
IDE Primary Slave PIO : Auto Parallel Port EPP Type : EPP1.9
IDE Secondary Master PIO : Auto
IDE Secondary Slave PIO : Auto
IDE Primary Master UDMA : Auto
IDE Primary Slave UDMA : Auto
IDE Secondary Master UDMA : Auto
IDE Secondary Slave UDMA : Auto
Onboard Primary PCI IDE : Enabled
Onboard Secondary PCI IDE : Enabled
USB Keyboard Support : Disabled

Onboard FDD Controller : Enabled
Onboard Serial Port 1 : Auto
Onboard Serial Port 2 : Auto
UART 2 Mode : Standard

Onboard Parallel Port : 378/IRQ7

If you don't want to use the Onboard IDE connector, than you should

Note:

use On-card (PCI or ISA card) IDE connector. You need to set
Onboard Primary PCI IDE: Disabled and Onboard Secondary PCI
IDE: Disabled from CHIPSET FEATURES SETUP UTILITY.
The Onboard PCI IDE cable should be equal to or less than
18 inches (45 cm.).

IDE HDD Block Mode: Select enabled only if your hard drives support block mode.

Enabled : Enabled IDE HDD Block Mode. This will provide higher HDD transfer
rates.

Disabled: Disable IDE HDD Block Mode.

IDE Primary (Secondary) Master/Slave PIO : The default value is Auto.

This field is Selectable Primary (Secondary) IDE PIO Mode (0~4) for HDD.

ESC : Quit : Select Item
F1 : Help PU/PD/+/- : Modify
F5 : Old Values (Shift) F2 : Color
F7 : Load Setup Defaults

IDE Primary (Secondary) Master/Slave UDMA : The default value is Auto.

Auto : Select Primary (Secondary) IDE used Ultra DMA HDD.
Disabled : Disabled Primary (Secondary) IDE used Ultra DMA HDD.

Onboard Primary PCI IDE: The default value is enabled.

Enabled : Enable Onboard 1st channel IDE port.
Disabled : Disable Onboard 1st channel IDE port, when using 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 using On-card (PCI or ISA

card) IDE connector.

AWARD BIOS 4-17

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.

Auto : BIOS will automatically detect the Onboard Secondary Slave PCI

IDE HDD Accessing mode.

Mode0~4 : Manually set the IDE Accessing mode.

Onboard FDC Controller: The default value is Enabled.

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

Disabled: Disable the Onboard SMC CHIP's floppy drive interface controller,

when using On-card ISA FDC's controller.

Onboard UART 1: This field allows the user to sellect the serial port. The default
value is 3F8H/IRQ4.

COM1: Enable Onboard Serial port 1 and address is 3F8H/IRQ4.
COM2: Enable Onboard Serial port 1 and address is 2F8H/IRQ3.
COM3: Enable Onboard Serial port 1 and address is 3E8H/IRQ4.
COM4: Enable Onboard Serial port 1 and address is 2E8H/IRQ3.
Disabled: Disable Onboard SMC CHIP's Serial port 1.

Onboard UART 2: This field allows the user to sellect the serial port. The default
value is 2F8H/IRQ3.

COM1: Enable Onboard Serial port 2 and address is 3F8H/IRQ4.
COM2: Enable Onboard Serial port 2 and address is 2F8H/IRQ3.
COM3: Enable Onboard Serial port 2 and address is 3E8H/IRQ4.
COM4: Enable Onboard Serial port 2 and address is 2E8H/IRQ3.
Disabled: Disable Onboard SMC CHIP's Serial port 2.

4-18 CHAPTER 4

Onboard UART 2 Mode:The default value is standard. This field allows the user to
select the COM2 port that can support a serial Infrared Interface.

Standard:Support a Serial Infrared Interface IrDA.
HPSIR:Support a HP Serial Infrared Interface formats.
ASKIR:Support a Sharp Serial Infrared Interface formats.

Onboard Parallel port: This field allows the user to sellect the LPT port. The default

value is 378H/IRQ7.

378H : Enable Onboard LPT port and address is 378H and IRQ7
278H : Enable Onboard LPT port and address is 278H and IRQ5.
3BCH : Enable Onboard LPT port and address is 3BCH and IRQ7.
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 field allows 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 : Enhance Parallel Port mode.
ECP : Extend Capabilities Port mode.
EPP+ECP : ECP Mode & EPP Mode.

ECP Mode USE DMA: This field allows 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.

4-7 Load Setup Defaults

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

AWARD BIOS 4-19

ROM PCI/ISA BIOS(2A59IPAB)

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP SUPERVISOR PASSWORD
BIOS FEATURES SETUP USER PASSWORD
CHIPSET FEATURES SETUP IDE HDD AUTO DETECTION
POWER MANAGEMENT SETUP HDD LOW LEVEL FORMAT
PNP/PCI CONFIGURA ETUP
INTEGRATED PERIPH SAVING

LOAD SETUP DEFAULTS

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

Load Setup Defaults Except Standard COMS SETUP

Load SETUP Default (Y/N)? Y

Figure 4-8 LOAD SETUP DEFAULT

4-8 Change Supervisor or User Password

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

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

BIOS FEATURES SETUP menu (Refer to Figure 4-3 for the details).

1. If CMOS is corrupted or the option is 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 the
new one in CMOS RAM. A maximum of 8 characters is acceptable.

4-20 CHAPTER 4

4-9 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(2A59IPAB)

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 4-9 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 numbers of cylinders, heads and sectors for NORMAL mode are
1024, 16 and 63.
no. Cylinder (1024)
x no. Head ( 16)
x no. Sector ( 63)
x no. per sector ( 512)
528 Megabytes
If users 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 4-21

LBA (Logical Block Addressing) mode: A new HDD accessing method to overcome the
528 Megabyte bottleneck.

The numbers of cylinders, heads and sectors shown in the setup may not be the numbers
physically contained in the HDD.

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

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

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

8.4 Gigabytes

LARGE mode

Extended HDD access mode is supported by Award Software.

Some IDE HDDs contain more than 1024 cylinders without LBA support (in some
cases, users do not want the LBA mode). 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 multiplied by 2. A reverse
transformation process will be made inside INT 12h in order to access the right
HDD address.

Maximum HDD size:

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

4-22 CHAPTER 4

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 an Operating
System which replaces the whole 1NT 13h. UNIX operating systems do not support either
LBA or LARGE and must utilize the Standard mode. However UNIX can support drives

larger than 528MB.

4-10 HDD Low Level Format

Interleave

Select the interleave number of the hard disk drive you wish to perform low
level format. You may select from 1 to 8. Check the documentation of the drive for the
correct interleave number, or select 0 for utility automatic detection.

Auto scan bad track

This allows the utility to scan first then format by each track.

Start

Press<Y>to start low level format.

4-11 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.

4-12 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 upduted.

TECHNICAL INFORMATION 5-1

Chapter 5

Technical Information

5-1 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 adapter
[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.

5-2 CHAPTER 5

5-2 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.

5-3 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.

5-4 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 byte.

31 Reserved for extension memory high byte.

32 DATE CENTURY byte.

33 INFORMATION FLAG.
35-3F Reserved.

40-7F Reserved for CHIPSET SETTING DATA.

TECHNICAL INFORMATION 5-3

5-4 CHAPTER 5

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 Internal 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 5-5

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 and decide the system clock speed.

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

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.

5-6 CHAPTER 5

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 PS/2 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 and 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 and 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 5-7

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 and 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 past the control right to the
operating system.

Unexpected Errors:
POST(hex) DESCRIPTION

B0

B1

If interrupt occurs in protected mode.

Unclaimed NMI occurs.

5-8 CHAPTER 5

Appendix B: I/O Connectors

JP13 : PS/2 Mouse Connector:

Pin Signal Name

1 Data (Red Wire)

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

JP10/COM1, JP11/COM2 : Serial Ports Connector

Signal Name Pin Pin Signal Name

6

9

1

5

DCD
SIN
SOUT
DTR
GND

J8 : Parallel Port Connector

Signal Name Pin Pin Signal Name

STROBE­Data Bit 0

25

14

13

1

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

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

J7 : Floppy Disk Connector

Signal Name Pin Pin Signal Name

TECHNICAL INFORMATION 5-9

1 2

33 34

Ground
Ground

Ground

Ground
Ground
Ground
Ground
Ground

Ground

Ground
Ground
Ground
Ground

Ground

Ground
Ground
Ground

J5/J6 : Primary, Secondray IDE 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 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

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

5-10 CHAPTER 5

ATX Power Supply Connector:

Signal Name Pin Pin Signal Name

11

20

1

10

CN1: USB Connector:
1

3.3V

-12.0V
GND
PS-ON
GND
GND
GND

-5.0V

5.0V

5.0V

USB Port 1

11
12
13
14
15
16
17
18
19
20

10

1
2
3
4
5
6
7
8
9

3.3V

3.3V
GND

5.0V
GND

5.0V
GND
PW-OK
5VSB

12.0V

USB Port 2

PS/2 Mouse

1

Figure 5-1 USB Port Adapter