IBASE MI941 User Manual

MI941

LGA775 Core 2 Duo

Intel® G41 Chipset

Mini-ITX Motherboard

USER’S MANUAL

Version 1.0A

Acknowledgments

AMI is a registered trademark of American Megatrends, Inc.
PS/2 is a trademark of International Business Machines
Corporation.
Intel is a trademark or registered trademark of Intel Corporation.
Microsoft Windows is a registered trademark of Microsoft
Corporation.
Winbond is a registered trademark of Winbond Electronics
Corporation.
All other product names or trademarks are properties of their
respective owners.

Table of Contents

Introduction ....................................................... 1

Checklist .............................................................................. 1

Product Description ............................................................. 2

Specifications ...................................................................... 3

Board Dimensions ............................................................... 4

Installations ....................................................... 5

Installing the CPU ............................................................... 6

ATX Power Installation ...................................................... 6

Installing the Memory ......................................................... 7

Setting the Jumpers ............................................................. 8

Connectors on MI941 ........................................................ 11

BIOS Setup ....................................................... 19

Drivers Installation ...................................... 41

Intel Chipset Software Installation Utility......................... 42

Intel G41 Chipset Family Graphics Driver Installation .... 45

Realtek High Definition Audio Driver Installation ........... 48

Intel PRO LAN Network Drivers Installation ................... 50

Appendix ........................................................... 54

A. I/O Port Address Map ................................................... 54

B. Interrupt Request Lines (IRQ) ...................................... 55

C. Watchdog Timer Configuration .................................... 56

MI941 User’s Manual iii

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iv

MI941 User’s Manual

INTRODUCTION

Introduction

Checklist

Your MI941 Core 2 Duo motherboard package should include the items
listed below:

 The MI941 motherboard
 This User’s manual
 1 x I/O shield
 1 x IDE cable
 1 x SATA cable
 1 CD containing the following:

 Chipset Drivers
 Flash Memory Utility

MI941 User’s Manual 1

INSTALLATIONS

Product Description

The MI941 Mini-ITX motherboard is designed for either the Intel
Core2 Duo or Core2 Quad processors of up to 1333MHz FSB.
It is based on the Intel G41 Express chipset and it comes with two
dual-channel DDR3 memory slots and 4GB memory capacity for
faster system responsiveness and support of 64-bit computing.

Dual independent display comes to life with the onboard Intel
G41 integrated graphics with CRT and DVI display interface. LAN
functionality is supported with a single Gigabit Ethernet
controllers.

MI941 is supports high-end features including high definition
audio, ten fast USB 2.0 ports, four SATAII and an eSATA port,
watchdog timer, digital I/O and four serial ports. Board
dimensions are 170mm by 170mm.

MI941 FEATURES

 Supports Intel® Core™2 Quad / Core™2 Duo /

Pentium® Dual Core/ Celeron® processors

 800MHz/1066MHz/1333MHz FSB
 DDR3 DIMM x2, Max. 4GB
 Single Gigabit LAN
 Integrated G41 VGA for CRT & DVI interface
 6x USB 2.0, 4x SATA II, 2x COM
 HD audio, Watchdog timer, 1x PCI , 1x PCI-E x1

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MI941 User’s Manual

Specifications

Form Factor
Processor

FSB
Chipset

BIOS
Memory

Video

LAN
USB

SATA II
IDE
Audio
LPC I/O

Hardware Monitor

Edge Connectors

On Board Headers
/ Connectors

Expansion

RTC
Watchdog Timer
Digital IO
Other
Power Connector
System Voltage
RoHS Compliant
Board Size

Mini ITX
Supports Intel

LGA775 socket
800/1066/1333 MHz
Intel

Intel

Intel
Phoenix BIOS
Two 240-pin DDRIII 800/1066 DIMM sockets
Supports max. 4 GB system memory
Intel G41 integrated graphic subsystem(GMA X4500) , dual

independent display available through on-board VGA and DVI-D

1. Intel 82583V PCI Express Gigabit LAN controller x1
Intel ICH7 built-in USB 2.0 host controller, supports 6 ports:

- 4 ports in the rear I/O region, 2 ports with on-board headers
Intel ICH7 built-in SATA II controller (3.0Gb/sec) w/ 4 ports
ICH7 built-in one channel Ultra DMA 33/66/100
Intel ICH7 built-in high definition audio w/ Realtek ALC662 Codec
Winbond W83627DHG-P: COM1 (RS232), COM2

(RS232/422/485) & Hardware monitor
One fan connectors with tachometer support
CPU fan connector supports 4-wire fan with PWM control
Supports three thermal diodes (CPU die + 2 on-board)
Voltage monitoring for VCC (processor), 3.3V, 5V, and 12V
PS/2 stack connector x1 for KB/MS
DB9 connector x 1 for COM1
Stack connector x 1 for VGA+DVI-D
RJ45 + dual USB stack connector x1 for LAN1 & USB1~2
Stack dual USB connector x1 for USB 3 & 4
Triple (3x1) phone jack stack connector x1 for High-Definition Audio
Standard SATA (7-pin shrouded vertical) connector x4
2x4 pins pin-header x1 for USB 5-6
2x5 pins DF11-10 x1 for COM2 (RS232/422/485)
2x5 pins pin-header x1 for Digital I/O
2x5 pins pin-header x1 for front panel audio
40 pins box-header x1 for IDE
4 pins pin-header x1 for CPU fan & 3 pins pin-header x2 system fan
PCI +PCI-e(x1) slot x1

2x8 pins pin header x1 for adaptor card:

ICH7 built-in RTC with on-board lithium battery
Yes (256 segments, 0, 1, 2…255 sec/min)
4 in and 4 Out
LAN Wakeup
ATX
+5V, +3.3V, +12V, -12V & 5VSB
Yes
170 x 170mm

INTRODUCTION

®

Core TM 2 Quad /Core TM 2 Duo/ Celeron® processor

®

G41 Chipset consisting of:

®

82G41 Graphic Memory Controller Hub (GMCH) (25W)

®

82801GB (ICH7) I/O Controller Hub(3.3W)

 ID394 (4 serial ports)
 ID395 (TPM function)

MI941 User’s Manual 3

INSTALLATIONS

Board Dimensions

4

MI941 User’s Manual

INSTALLATIONS

Installations

This section provides information on how to use the jumpers and
connectors on the MI941 in order to set up a workable system. The
topics covered are:

Installing the CPU ................................................................................. 6

ATX Power Installation ......................................................................... 6

Installing the Memory ........................................................................... 7

Setting the Jumpers ................................................................................ 8

Connectors on MI941 .......................................................................... 11

MI941 User’s Manual 5

INSTALLATIONS

Installing the CPU

The MI941 motherboard supports an LGA 775 processor socket for
Intel® Core 2 Duo processors.

The LGA 775 processor socket comes with a lever to secure the
processor. Refer to the pictures below, from left to right, on how to place
the processor into the CPU socket. Please note that the cover of the

LGA775 socket must always be installed during transport to avoid
damage to the socket.

ATX Power Installation

The system power is provided to the motherboard with the ATX2 and
ATX1 power connectors. ATX2 is a 24-pin power connector and ATX1
is a 4-pin 12V power connector.

The 24-pin power connector can to be connected to a standard 20-pin
ATX power connector in a standard ATX power supply (Min. 400watt).

Note: The power supply 5VSB voltage must be at least 2A.

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MI941 User’s Manual

INSTALLATIONS

Installing the Memory

The MI941 motherboard supports two DDR3 memory sockets for a
maximum total memory of 4GB. It supports DDR3 800/1066MHz.

Basically, the system memory interface has the following features:

Supports two 64-bit wide DDR data channels
Available bandwidth up to 6.4GB/s (DDR3 1066) for two-channel
mode.
Supports 512Mb, 1Gb DDR3 technologies.
Supports only x8, x16, DDR3 devices with four banks
Supports only unbuffered DIMMs
Supports opportunistic refresh
Up to 32 simultaneously open pages (four per row, four rows
maximum)

MI941 User’s Manual 7

INSTALLATIONS

Setting the Jumpers

Jumpers are used on the motherboard are used to select various settings
and features according to your needs and applications. Contact your
supplier if you have doubts about the best configuration for your needs.
The following lists the connectors and their respective fu nctions.

Jumper Locations on MI941 .................................................................. 9

JP1, JP2, JP3: RS232/422/485 (COM2) Selection .............................. 10

JP6: Clear CMOS Contents ................................................................. 10

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MI941 User’s Manual

INSTALLATIONS

Jumper Locations on MI941

JP1, JP2, JP3: RS232/422/485 (COM2) Selection .............................. 10

JP6: Clear CMOS Contents ................................................................. 10

MI941 User’s Manual 9

INSTALLATIONS

JP1, JP2, JP3: RS232/422/485 (COM2) Selection

COM2 is selectable for RS232, RS-422 and RS-485.

COM2

Function

Jumper
Setting

(pin closed)

RS-232 RS-422 RS-485

JP1:

1-2

JP2:

3-5 & 4-6

JP3:

3-5 & 4-6

JP1:

3-4

JP2:

1-3 & 2-4

JP3:

1-3 & 2-4

JP1:

5-6

JP2:

1-3 & 2-4

JP3:

1-3 & 2-4

JP6: Clear CMOS Contents

Use JP6, a 3-pin header, to clear the CMOS contents.

Note that the ATX-power connector should be disconnected from the
motherboard before clearing CMOS.

JP6 Setting Function

Pin 1-2

Short/Closed

Pin 2-3

Short/Closed

Normal

Clear CMOS

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MI941 User’s Manual

INSTALLATIONS

Connectors on MI941

The connectors on MI941 allow you to connect external devices such as
keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on MI941 and their respective
functions.

ATX2: 24-pin ATX Power Connector ................................................ 13

ATX1: ATX 12V Power Connector .................................................... 13

DDRIII1: Channel A DDR3 Socket .................................................... 13

DDRIII2: Channel B DDR3 Socket .................................................... 13

CPU_FAN1: CPU Fan Power Connector ............................................ 13

SYS_FAN1: System Fan1 Power Connector ...................................... 13

SYS_FAN2: System Fan2 Power Connector ...................................... 14

CN1: Serial Ports(COM1) ................................................................... 14

CN5: Gigabit LAN (Intel 82583V) RJ-45 &USB 0/1 Connector ....... 15

CN6: DVI-D+CRT Connector ............................................................ 15

CN7: USB 2/3 Connector .................................................................... 15

CN12: PS/2 Keyboard and PS/2 Mouse Connectors ........................... 16

CN13: Audio Connector ...................................................................... 16

CN8, CN9, CN10, CN11: SATA HDD Connectors ............................ 16

J1: Digital I/O Connector (4 in, 4 out)................................................. 16

J5: SPI Debug Tools Port (Factory use only) ............................................ 17

J8: Power LED .................................................................................... 17

J9: System Function Connector ........................................................... 17

J10: USB 4/5 Connector ...................................................................... 18

J11: For LPC I/F Adaptor Card ........................................................... 18

J13: Audio Front Header ..................................................................... 18

IDE1: Primary IDE Connectors ........................................................... 18

PCI1: PCI Slot (supports two masters) ................................................ 18

PCIE1: x1 PCI Express Slot ................................................................ 18

MI941 User’s Manual 11

INSTALLATIONS

ATX2: 24-pin ATX Power Connector ................................................................................................... 13

Connector Locations on MI941

ATX1: ATX 12V Power Connector ....................................................................................................... 13

DDRIII1: Channel A DDR3 Socket ....................................................................................................... 13

DDRIII2: Channel B DDR3 Socket ....................................................................................................... 13

CPU_FAN1: CPU Fan Power Connector ............................................................................................... 13

SYS_FAN1: System Fan1 Power Connector ......................................................................................... 13

SYS_FAN2: System Fan2 Power Connector ......................................................................................... 14

CN1: Serial Ports(COM1) ...................................................................................................................... 14

CN5: Gigabit LAN (Intel 82583V) RJ-45 &USB 0/1 Connector .......................................................... 15

CN6: DVI-D+CRT Connector ................................................................................................................ 15

CN7: USB 2/3 Connector ....................................................................................................................... 15

CN12: PS/2 Keyboard and PS/2 Mouse Connectors ............................................................................. 16

CN13: Audio Connector ......................................................................................................................... 16

CN8, CN9, CN10, CN11: SATA HDD Connectors .............................................................................. 16

J1: Digital I/O Connector (4 in, 4 out) ................................................................................................... 16

J5: SPI Debug Tools Port (Factory use only) ......................................................................................... 17

J8: Power LED ........................................................................................................................................ 17

J9: System Function Connector .............................................................................................................. 17

J10: USB 4/5 Connector ......................................................................................................................... 18

J11: For LPC I/F Adaptor Card .............................................................................................................. 18

J13: Audio Front Header ........................................................................................................................ 18

IDE1: Primary IDE Connectors .............................................................................................................. 18

PCI1: PCI Slot (supports two masters) ................................................................................................... 18

PCIE1: x1 PCI Express Slot ................................................................................................................... 18

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MI941 User’s Manual

INSTALLATIONS

ATX2: 24-pin ATX Power Connector

Signal Name Pin # Pin # Signal Name

3.3V 13 1 3.3V

-12V 14 2 3.3V
Ground 15 3 Ground
PS-ON 16 4 +5V
Ground 17 5 Ground
Ground 18 6 +5V
Ground 19 7 Ground

-5V 20 8 Power good
+5V 21 9 5VSB
+5V 22 10 +12V
+5V 23 11 +12V

Ground 24 12 +3.3V

ATX1: ATX 12V Power Connector

This connector supplies the CPU operating voltage.

Pin # Signal Name

1 Ground
2 Ground
3 +12V
4 +12V

DDRIII1: Channel A DDR3 Socket
DDRIII2: Channel B DDR3 Socket
CPU_FAN1: CPU Fan Power Connector

Pin # Signal Name

1 Ground
2 +12V
3 Rotation detection

4 Control

SYS_FAN1: System Fan1 Power Connector

Pin # Signal Name

1 Ground
2 +12V
3 Rotation detection

MI941 User’s Manual 13

INSTALLATIONS

SYS_FAN2: System Fan2 Power Connector

Pin # Signal Name

1 Ground
2 +12V
3 Rotation detection

CN1: Serial Ports(COM1)

CN1 (COM1) is a DB-9 connector,

Signal Name Pin # Pin # Signal Name

DCD, Data carrier detect 1 6 DSR, Data set ready

RXD, Receive data 2 7 RTS, Request to send

TXD, Transmit data 3 8 CTS, Clear to send

DTR, Data terminal ready 4 9 RI, Ring indicator

J2: COM2 is jumper selectable for RS-232, RS-422 and RS-485.

GND, ground 5 10 Not Used

Pin # Signal Name

RS-232 R2-422 RS-485

1 DCD TX- DATA­2 RX TX+ DATA+
3 TX RX+ NC
4 DTR RX- NC
5 Ground Ground Ground
6 DSR NC NC
7 RTS NC NC
8 CTS NC NC
9 RI NC NC

10 NC NC NC

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MI941 User’s Manual

INSTALLATIONS

CN5: Gigabit LAN (Intel 82583V) RJ-45 &USB 0/1 Connector
CN6: DVI-D+CRT Connector

Signal Name Pin # Pin # Signal Name

Red 1 2 Green

Blue 3 4 N.C.
GND 5 6 GND
GND 7 8 GND

VCC 9 10 GND

N.C. 11 12 DDCDATA

HSYNC 13 14 VSYNC

DDCCLK 15

Signal Name Pin # Pin # Signal Name

DATA2- 1 2 DATA2+

GND 3 4 N.C.

N.C. 5 6 DDCCLK

DDCDATA 7 8 N.C.

DATA1- 9 10 DATA1+

GND 11 12 N.C.

N.C. 13 14 VCC
GND 15 16 Hot Plug

Detect

DATA0- 17 18 DATA0+

GND 19 20 N.C.

N.C. 21 22 GND

CLK+ 23 24 CLK-

CN7: USB 2/3 Connector

MI941 User’s Manual 15

INSTALLATIONS

CN12: PS/2 Keyboard and PS/2 Mouse Connectors

Keyboard Signal Pin # Mouse Signal

Keyboard data 1 Mouse data

N.C. 2 N.C.

GND 3 GND

Mouse (top)

Keyboard (bottom)

5V 4 5V

Keyboard clock 5 Mouse clock

N.C. 6 N.C.

CN13: Audio Connector

CN13 is a 3-jack audio connector.

CN8, CN9, CN10, CN11: SATA HDD Connectors

Pin # Signal Name

1 Ground
2 TX+
3 TX­4 Ground
5 RX­6 RX+
7 Ground

J1: Digital I/O Connector (4 in, 4 out)

J1 supports TTL levels and is used to control external devices requiring
ON/OFF circuitry.

Signal Name Pin # Pin # Signal Name

Ground 1 2 +5V

Out3 3 4 Out1
Out2 5 6 Out0

IN3 7 8 IN1
IN2 9 10 IN0

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MI941 User’s Manual

INSTALLATIONS

J5: SPI Debug Tools Port (Factory use only)
J8: Power LED

The power LED indicates the status of the main power switch.

Pin # Signal Name

1 Power LED
2 No connect
3 Ground

J9: System Function Connector

ATX Power ON Switch: Pins 1 and 2

This 2-pin connector is an “ATX Power Supply On/Off Switch” on the
system that connects to the power switch on the case. When pressed, the
power switch will force the system to power on. When pressed again, it
will force the system to power off.

Hard Disk Drive LED Connector: Pins 3 and 4

This connector connects to the hard drive activity LED on control panel.
This LED will flash when the HDD is being accessed.

Pin # Signal Name

4 HDD Active
3 5V

Reset Switch: Pins 5 and 6

The reset switch allows the user to reset the system without turning the
main power switch off and then on again. Orientation is not required
when making a connection to this header.

+5V and 5VSB Signals: Pins 7 and 8

Pin # Signal Name

7 +5V
8 +5VSB

MI941 User’s Manual 17

INSTALLATIONS

p

N

t

N

t

y

J10: USB 4/5 Connector

Signal Name Pin Pin Signal Name

Vcc 1 2 Ground
D0- 3 4 D1+
D0+ 5 6 D1-

Ground 7 8 Vcc

J11: For LPC I/F Adaptor Card
J13: Audio Front Header

Signal Name Pin # Pin # Signal Name

MIC2_L 1 2 Ground
MIC2_R 3 4 Presence#
Line2_R 5 6 MIC2_ID

Sense 7 8 NC

Line2_L 9 10 Line2_ID

IDE1: Primary IDE Connectors

Signal Name Pin # Pin # Signal Name

Reset IDE 1 2 Ground
Host data 7 3 4 Host data 8
Host data 6 5 6 Host data 9
Host data 5 7 8 Host data 10
Host data 4 9 10 Host data 11
Host data 3 11 12 Host data 12
Host data 2 13 14 Host data 13
Host data 1 15 16 Host data 14
Host data 0 17 18 Host data 15

Ground 19 20 Protect

DRQ0 21 22 Ground

Host IOW 23 24 Ground

Host IOR 25 26 Ground

IOCHRDY 27 28 Host ALE

DACK0 29 30 Ground

IRQ14 31 32

IDE1

Address 1 33 34

Address 0 35 36 Address 2

Chip select 0 37 38 Chip select 1

Activit

39 40 Ground

PCI1: PCI Slot (supports two masters)
PCIE1: x1 PCI Express Slot

in

o connec
o connec

18

MI941 User’s Manual

BIOS SETUP

BIOS Setup

This chapter describes the different settings available in the AMI
(American Megatrends, Inc.) BIOS that comes with the board. The
topics covered in this chapter are as follows:

BIOS Introduction ............................................................................... 20

BIOS Setup .......................................................................................... 21

Main BIOS Setup ................................................................................ 22

Advanced Settings ............................................................................... 23

PCIPnP Settings................................................................................... 32

Boot Settings ....................................................................................... 34

Security Settings .................................................................................. 35

Advanced Chipset Settings .................................................................. 36

Exit Setup ............................................................................................ 39

MI941 User’s Manual 19

BIOS SETUP

BIOS Introduction

This chapter describes the different settings available in the AMI
(American Megatrends, Inc.) BIOS that comes with the board. The
topics covered in this chapter are as follows:

BIOS Introduction ............................................................................... 20

BIOS Setup .......................................................................................... 21

Main BIOS Setup ................................................................................. 22

Advanced Settings ............................................................................... 23

PCIPnP Settings ................................................................................... 32

Boot Settings ........................................................................................ 34

Security Settings .................................................................................. 35

Advanced Chipset Settings .................................................................. 36

Exit Setup ............................................................................................. 39

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MI941 User’s Manual

BIOS SETUP

BIOS Introduction

The BIOS (Basic Input/Output System) installed in your computer
system’s ROM supports Intel processors. The BIOS provides critical
low-level support for a standard device such as disk drives, serial ports
and parallel ports. It also adds virus and password protection as well as
special support for detailed fine-tuning of the chipset controlling the
entire system.

BIOS Setup

The BIOS provides a Setup utility program for specifying the system
configurations and settings. The BIOS ROM of the system stores the
Setup utility. When you turn on the co mputer, the BIOS is immediately
activated. Pressing the <Del> key immediately allows you to enter the
Setup utility. If you are a little bit late pressing the <Del> key, POST
(Power On Self Test) will continue with its test routines, thus preventing
you from invoking the Setup. If you still wish to enter Setup, restart the
system by pressing the ”Reset” button or simultaneously pressing the
<Ctrl>, <Alt> and <Delete> keys. You can also restart by turning the
system Off and back On again. The following message will appear on
the screen:

Press <DEL> to Enter Setup

In general, you press the arrow keys to highlight items, <Enter> to
select, the <PgUp> and <PgDn> keys to change entries, <F1> for help
and <Esc> to quit.

When you enter the Setup utility, the Main Menu screen will appear on
the screen. The Main Menu allows you to select from various setup
functions and exit choices.

MI941 User’s Manual 21

BIOS SETUP

Main BIOS Setup

This setup allows you to record some basic hardware configurations in
your computer system and set the system clock.

Main Advanced PCIPnP Boot Security Chipset Exit

System Overview

Processor

Intel(R) Core(TM)2 Duo CPU T9400 @ 266GHz

Speed : 2666MHz

Count : 1

System Memory

Size : 3995MB

System Time [02:29:50]

System Date [Fri 01/02/2009]

Note:

If the system cannot boot after making and saving system
changes with Setup, the AMI BIOS supports an override to
the CMOS settings that resets your system to its default.

Warning:

It is strongly recommended that you avoid making any
changes to the chipset defaults. These defaults have been
carefully chosen by both AMI and your system manufacturer
to provide the absolute maximum performance and
reliability. Changing the defaults could cause the system to
become unstable and crash in some cases.

BIOS SETUP UTILITY

Use[ENTER], [TAB]
or [SHIFT-TAB] to
select a field.

Use [+] or [-] to
configure system Time.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

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MI941 User’s Manual

BIOS SETUP

Advanced Settings

This section allows you to configure and improve your system and
allows you to set up some system features according to your preference.

Main Advanced PCIPnP Boot Security Chipset Exit

Advanced Settings

WARNING: Setting wrong values in below sections

► CPU Configurations

► IDE Configuration

► SuperIO Configuration
► Hardware Health Confguration

► ACPI Configuration
► APM Configuration

► MPS Configuration

► Smbios Configuration

► USB Configuration

may cause system to malfunction.

The Advanced BIOS Settings contains the following sections:

► CPU Configurations
► IDE Configuration
► SuperIO Configuration
► Hardware Health Confguration
► ACPI Configuration
► APM Configuration
► MPS Configuration
► Smbios Configuration
► USB Configuration

The fields in each section are shown in the following pages, as seen in the
computer screen. Please note that setting the wrong values may cause the system
to malfunction. If unsure, please contact technical support of your supplier.

BIOS SETUP UTILITY

Configure CPU.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

MI941 User’s Manual 23

BIOS SETUP

Main Advanced PCIPnP Boot Security Chipset Exit

Configure advanced CPU settings

Manufacturer: Intel

Intel® Core(TM)2 Duo CPU T9400 @ 2.66GHz

Frequency : 2.66GHz

FSB Speed : 1332MHz

Cache L1 : 128KB

Cache L2 : 6144KB

Ratio Actual Value: 8

Hardware Prefetcher [Enabled]

Adjacent Cache Line Prefetch [Enabled]

Max CPU ID Value Limit [Disabled]

Intel(R) Virtualization Tech [Enabled]

BIOS SETUP UTILITY

Configure CPU.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

The CPU Configuration menu shows the following CPU details:
Manufacturer: the name of the CPU manufacturer
Brand String: the brand name of the CPU being used
Frequency: the CPU processing speed
FSB Speed: the FSB speed
Cache L1: the CPU L1 cache size
Cache L2: the CPU L2 cache

Hardware Prefetcher

The hardware prefetcher operates transparently, without programmer
intervention, to fetch streams of data and instruction from memory into
the unified second-level cache. The prefetcher is capable of handling
multiple streams in either the forward or backward direction. It is
triggered when successive cache misses occur in the last-level cache and
a stride in the access pattern is detected, such as in the case of loop
iterations that access array elements. The prefetching occurs up to a page
boundary.

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MI941 User’s Manual

BIOS SETUP

Adjacent Cache-Line Prefetch

The Adjacent Cache-Line Prefetch mechanism, like automatic hardware
prefetch, operates without programmer intervention. When enabled
through the BIOS, two 64-byte cache lines are fetched into a 128-byte
sector, regardless of whether the additional cache line has been
requested or not. In applications with relatively poor spatial locality, the
cache miss ratio is higher. A cache miss on an Intel® Pentium® 4
processor-based system (with adjacent sector prefetch enabled) brings in
128 bytes, leading to higher bus utilization (assuming that the
application didn’t need the other 64 bytes). When adjacent sector
prefetch is disabled, an Intel® P entium® 4 processor-based system only
fetches 64 bytes. The other 64 bytes of the sector in the last-level cache
are not used unless the application explicitly issues a load to that address.
Disabling adjacent sector prefetch on Intel® Pentium® 4
processor-based systems can reduce bus traffic.

MI941 User’s Manual 25

BIOS SETUP

BIOS SETUP UTILITY

Main Advanced PCIPnP Boot Security Chipset Exit

IDE Configuration

ATA/IDE Configuration [Compatible]

Legacy IDE Channels [SATA Pri, PATA Sec]

► Primary IDE Master : [Not Detected]
► Primary Slave Master : [Not Detected]
► Secondary IDE Master : [Hitachi HDS72]
► Secondary IDE Slave : [Not Detected]

IDE Detect Time Out (Sec) [35]

Options:
Disabled
Compatible
Enhanced

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

The IDE Configuration menu is used to change and/or set the
configuration of the IDE devices installed in the system.

BIOS SETUP UTILITY

Main Advanced PCIPnP Boot Security Chipset Exit

Configure Win627DHG Super IO Chipset

Serial Port1 Address [3F8/IRQ4]

Serial Port2 Address [2F8/IRQ3]
Restore on AC Power Loss [Power Off]
Power On Function [None]

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

Onboard Serial Port

The default values are:
Serial Port 1: 3F8/IRQ4 Serial Port 2: 2F8/IRQ3

Restore on AC Power Loss

This field sets the system power status whether on or off when power
returns to the system from a power failure situation.

Power On Function

This field is related to how the system is powered on . The options are
None, Mouse Left, Mouse Right, and Any Key.

26

MI941 User’s Manual

BIOS SETUP

BIOS SETUP UTILITY

Main Advanced PCIPnP Boot Security Chipset Exit

Hardware Health Configuration

System Temperature :35°C/95°F
CPU Temperature :34°C/93°F
VTIN Temperature :37°C/98°F

SystemFan2 Speed :0 RPM
CPUFAN Speed :2280 RPM

Vcore(V) :1.160 V

3VCC
12V

5V : 5.273V

VBAT (V) :3.21 V

CPU smart fan [55°C]

ACPI Shutdown Temperature [Disabled]

:3.392 V
:12.196 V

Configure CPU.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

The Hardware Health Configuration menu is used to show the operati ng
temperature, fan speeds and system voltages.

ACPI Shutdown Temperature

The system will shut down automatically under OS with ACPI mode,
when the CPU temperature reaches the configured temperature.

BIOS SETUP UTILITY

Main Advanced PCIPnP Boot Security Chipset Exit

ACPI Settings

►General ACPI Configuration

General ACPI
Configuration settings

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

MI941 User’s Manual 27

BIOS SETUP

Main Advanced PCIPnP Boot Security Chipset Exit

General ACPI Configuration

Suspend mode [S3 (STR)]

Repost Video on S3 Resume [No]

BIOS SETUP UTILITY

General ACPI
Configuration settings

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

Suspend Mode

The options of this field are S1, S3 and Auto.

Repost Video on S3 Resume

The default setting is No.

28

MI941 User’s Manual

BIOS SETUP

BIOS SETUP UTILITY

Main Advanced PCIPnP Boot Security Chipset Exit

APM Configuration

Power Management/APM [Enabled]

Resume On Ring Disabled

Resume On PME# Disabled

Resume On RTC Alarm Disabled

Disable/Enable
RI to generate
a wake event.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

Resume on Ring

This option is used to enable activity on the RI (ring in) modem line to
wake up the system from a suspend or standby state. That is, the system
will be awakened by an incoming call on a modem.

Resume on PME#

This option is used enable activity on the PCI PME (power
managementevent) controller to wake up the system from a suspend or
standby state

Resume On RTC Alarm

This option is used to specify the time the system should be awakened
from a suspended state

MI941 User’s Manual 29

BIOS SETUP

Main Advanced PCIPnP Boot Security Chipset Exit

MPS Configuration

MPS Revision VT-d [1.1]

BIOS SETUP UTILITY

Select MPS
Revision

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

MPS Version Control for OS

This option is specifies the MPS (Multiprocessor Specification) version
for your operating system.

Main Advanced PCIPnP Boot Security Chipset Exit

SMBIOS Configuration

Smbios SMI Support [Enabled]

BIOS SETUP UTILITY

SMBIOS SMI Wrapper
support for PnP Func
50h-54h

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

SMBIOS SMI Support

Use the SMBIOS SMI Support to enable the system to support the
SMBIOS SMI wrapper for the PnP function 50h – 54h.

30

MI941 User’s Manual

BIOS SETUP

Main Advanced PCIPnP Boot Security Chipset Exit

USB Configuration

USB Devices Enabled:

None

Legacy USB Support [Enabled]

USB 2.0 Controller Mode [HiSpeed]

BIOS EHCI Hand-Off [Enabled]

BIOS SETUP UTILITY

Enables support for
legacy USB. AUTO
option disables
legacy support if
no USB devices are
connected.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

The USB Configuration menu is used to read USB configuration
information and configure the USB settings.

Legacy USB Support

This option is used to enable the USB mouse and USB keyboard
support. This option is enabled by default.

USB 2.0 Controller Mode

This option is used to control USB device in HiSpeed (480Mbps) or
FullSpeed (12Mbps).This option is enabled by HiSpeed.

BIOS EHCI Hand-Off

This feature allows you to enable support for operating system without
EHCI hand-off feature.

MI941 User’s Manual 31

BIOS SETUP

PCIPnP Settings

This option configures the PCI/PnP settings.

Main Advanced PCIPnP Boot Security Chipset Exit

Advanced PCI/PnP Settings

WARNING: Setting wrong values in below sections

Clear NVRAM [No]

Plug & Play O/S [No]

PCI Latency Timer [64]
Allocate IRQ to PCI VGA [Yes]

Palette Snooping [Disabled]

PCI IDE BusMaster

Off Board PCI?ISA IDE Card

IRQ3 [Available]

IRQ4 [Available]

IRQ5 [Available]

IRQ7 [Available]

IRQ9 [Available]

IRQ10

IRQ11

IRQ14

IRQ15

DMA Channel 0

DMA Channel 1

DMA Channel 3

DMA Channel 5

DMA Channel 6

DMA Channel 7

Reserved Memory Size

may cause system to malfunction.

Clear NVRAM

This item is used for clearing NVRAM during system boot.

Plug & Play O/S

This lets BIOS configure all devices in the system or lets the OS
configure PnP devices not required for boot if your system has a Plug
and Play OS.

PCI Latency Timer

This item sets value in units of PCI clocks for PCI device latency timer
register. Options are: 32, 64, 96, 128, 160, 192, 224, 248.

BIOS SETUP UTILITY

[Enabled]
[Auto]

[Available]

[Available]

[Available]

[Available]

[Available]

[Available]

[Available]

[Available]

[Available]

[Available]

[Disabled]

Size of memory block
to reserve for legacy
ISA devices.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

32

MI941 User’s Manual

BIOS SETUP

Allocate IRQ to PCI VGA

This assigns IRQ to PCI VGA card if card requests IRQ or doesn't assign
IRQ to PCI VGA card even if card requests an IRQ.

Palette Snooping

This informs the PCI devices that an ISA graphics device is installed in
the system so the card will function correctly.

PCI IDE BusMaster

This uses PCI busmastering for BIOS reading / writing to IDE devices.

OffBoard PCI/ISA IDE Card

Some PCI IDE cards may require this to be set to the PCI slot number
that is holding the card.

IRQ#

Use the IRQ# address to specify what IRQs can be assigned to a
particular peripheral device

.

MI941 User’s Manual 33

BIOS SETUP

Boot Settings

Main Advanced PCIPnP

Boot Settings Configuration

Quick Boot [Enabled]

Quiet Boot [Disabled]

AddOn ROM Display Mode [Force BIOS]

Bootup Num-Lock [On]

PS/2 Mouse Support [Auto]

Wait for ‘F1’ If Error [Enabled]

Hit ‘DEL’ Message Display

Interrupt 19 Capture

BIOS SETUP UTILITY

Boot Security Chipset Exit

Allows BIOS to skip
certain tests while
booting. This will
decrease the time
needed to boot the
system.

<- Select Screen

[Enabled]

[Disabled]

↑↓ Select Item
+- Change Field

Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

Quick Boot

This allows BIOS to skp certain tests while booting. This will decrease
the time needed to boot the system.

Quite Boot

When disabled, this displays normal POST messages. When enabled,
this displays OEM Logo instead of POST messages.

AddOn ROM Display Mode

This allows user to force BIOS/Option ROM of add-on cards to be
displayed during quiet boot.

Bootup Num-Lock

This select the power-on state for numlock.

PS/2 Mouse Support

This select support for PS/w mouse.

Wait for ‘F1’ If Error

When set to Enabled, the system waits for the F1 key to be pressed when
error occurs. This allows option ROM to trap interrupt 19.

Hit <DEL> Message Display

This displays “Press <DEL> to run Setup” in POST.

Interrupt 19 Capture

This allows option ROM to trap interrupt 19.

34

MI941 User’s Manual

BIOS SETUP

Security Settings

This setting comes with two options set the system password. Supervisor
Password sets a password that will be used to p rotect the system and
Setup utility. User Password sets a password that will be used
exclusively on the system. To specify a password, highlight t he type you
want and press <Enter>. The Enter Password: message prompts on the
screen. Type the password and press <Enter>. The system confirms your
password by asking you to type it again. After setting a password, the
screen automatically returns to the main screen.

To disable a password, just press the <Enter> key when you are
prompted to enter the password. A message will confirm the password to
be disabled. Once the password is disabled, the system will boot and you
can enter Setup freely.

Main Advanced PCIPnP Boot Security Chipset Exit

Security Settings

Supervisor Password : Not Installed
User Password : Not Installed

Change Supervisor Password
Change User Password

Boot Sector Virus Protection [Disabled]

BIOS SETUP UTILITY

Install or Change the
Password.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

MI941 User’s Manual 35

BIOS SETUP

Advanced Chipset Settings

This setting configures the north bridge, south bridge and the ME
subsystem. WARNING! Setting the wrong values may cause the system
to malfunction. -

Main Advanced PCIPnP Boot Security Chipset Exit

Advanced Chipset Settings

WARNING: Setting wrong values in below sections

► North Bridge Configuration
► South Bridge Configuration

Main Advanced PCIPnP Boot Security Chipset Exit

North Bridge Chipset Configuration

Memory Remap Feature [Enabled]

PCI MMIO Allocation: 4GB To 3072MB

DRAM Frequency [Auto]

Configure DRAM Timing by SPD [Enabled]

Memory Hole [Disabled]

Initiate Graphics Adapter [PEG/PCI]

IGD Graphics Mode Select [Enabled, 32MB]

IGD GTT Graphics memory size [No VT mode, 2MB]

PAVP Mode [Lite]

PEG Port Configuration

PEG Port [Auto]

Memory Remap Feature
This feature allows remapping of overlapped PCI memory above the
total physical memory.

DRAM Frequency
This option is, by default, set to Auto.

BIOS SETUP UTILITY

may cause system to malfunction.

BIOS SETUP UTILITY

Configure North Bridge
features.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

ENABLE: Allow
Remapping of
Overlapped PCI memory
above the total physical
memory.

DISABLE: Do not allow
remapping of memory

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

36

MI941 User’s Manual

BIOS SETUP

Configure DRAM Timing by SPD

When this item is enabled, the DRAM timing parameters are set
according to the DRAM SPD (Serial Presence Detect). When disabled,
you can manually set the DRAM timing parameters through the DRAM
sub-items.

Memory Hole
This option is used to reserve memory space between 15MB and 16MB
for ISA expansion cards that require a specified area of memory to work
properly.

Initiate Graphic Adapter
This option, by default, is set to PEG/PCI.

IGD Graphics Mode Select

Use the feature to set the amount of system memory to be used by the
Internal. Graphics Devices. expansion cards that require a specified area
of memory to work properly.

IGD GTT Graphics memory size

This feature allows the user to select the IGD GTT Graphics Size. The
Default setting is No VT Mode, 2 MB

PAVP Mode

Use the feature to select the Protect Audio Video Path Mode.

PEG Port

This BIOS feature is a toggle that enables or disables the PCI Express
port.

MI941 User’s Manual 37

BIOS SETUP

BIOS SETUP UTILITY

Main Advanced PCIPnP Boot Security Chipset Exit

South Bridge Chipset Configuration

USB Function [6 USB Ports]

USB 2.0 Controller [Disabled]
Audio Controller [Auto]
SMBUS Controller [Enabled]

Disabled
2 USB Ports
4 USB Ports

6 USB Ports

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

USB Function
This option enables the number of USB ports desired or disables the
USB function.

USB 2.0 Controller

This option is disabled by default.
Audio Controller

This option is used to enable the Southbridge high definition audio
controller.

SMBUS Controller
This option is enabled by default.

38

MI941 User’s Manual

BIOS SETUP

Exit Setup

The exit setup has the following settings which are:

Main Advanced PCIPnP Boot Security Chipset Exit

Exit Options

Save Changes and Exit

Discard Changes and Exit
Discard Changes

Load Optimal Defaults
Load Failsafe Defaults

BIOS SETUP UTILITY

Exit system setup
after saving the
changes.

<- Select Screen
↑↓ Select Item

+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

Save Changes and Exit

This option allows you to determine whether or not to accept the
modifications and save all changes into the CMOS memory before exit.

Discard Changes and Exit

This option allows you to exit the Setup utility without saving the
changes you have made in this session.

Discard Changes

This option allows you to discard all the changes that you have made in
this session.

Load Optimal Defaults

This option allows you to load the default values to your system
configuration. These default settings are optimal and enable all high
performance features.

Load Failsafe Defaults

This option allows you to load the troubleshooting default values
permanently stored in the BIOS ROM. These default settings are
non-optimal and disable all high-performance features.

MI941 User’s Manual 39

BIOS SETUP

This page is intentionally left blank.

40

MI941 User’s Manual

DRIVERS INSTALLATION

Drivers Installation

This section describes the installation procedures for software and
drivers under the Windows XP and Windows Vista. The software and
drivers are included with the motherboard. If you fi nd the items m issing,
please contact the vendor where you made t he purchase. The contents of
this section include the following:

Intel Chipset Software Installation Utility ................................. 42

Intel G41 Chipset Family Graphics Driver Installation ............. 45

Realtek High Definition Audio Driver Installation .................... 48

Intel PRO LAN Network Drivers Installation ........................... 50

IMPORTANT NOTE:

After installing your Windows operating system (Windows XP/ Vista),
you must install first the Intel Chipset Software Installation Utility
before proceeding with the drivers installation.

MI941 User’s Manual 41

DRIVERS INSTALLATION

Intel Chipset Software Installation Utility

The Intel Chipset Drivers should be installed first before the software
drivers to enable Plug & Play INF support for Intel chipset component s.
Follow the instructions below to complete the installation under
Windows XP/Vista.

1. Insert the CD that comes with the board. Click Intel at the left side,
then Intel(R) G41 Chipset Drivers.

2. Click Intel(R) Chipset Software Installation Utility.

42

MI941 User’s Manual

DRIVERS INSTALLATION

3. When the welcome screen to the Intel(R) Chipset Software
Installation Utility appears, click Next to continue.

4. Click Yes to accept the software license agreement and proceed with
the installation process.

MI941 User’s Manual 43

DRIVERS INSTALLATION

5. On Readme Information screen, click Next to continue the
installation.

6. The Setup process is now complete. Click Finish to restart the
computer and for changes to take effect.

44

MI941 User’s Manual

DRIVERS INSTALLATION

Intel G41 Chipset Family Graphics Driver
Installation

To install the VGA drivers, follow the steps below to proceed with the
installation.

1. Insert the CD that comes with the board. Click Intel at the left side,
then Intel(R) G41 Chipset Drivers.

2. Click Intel G41 Chipset Family Graphics Driver.

MI941 User’s Manual 45

DRIVERS INSTALLATION

3. When the welcome screen of the Intel(R) Graphics Media Accelerator
Driver appears, click Next to continue.

4. Click Yes to to agree with the license agreement and continue the
installation.

46

MI941 User’s Manual

DRIVERS INSTALLATION

5. Click Next in the Readme File Information window.

6. Click Next in the Setup Progress window.

7. Setup is now complete. Click Finish to restart the computer and for

changes to take effect.

MI941 User’s Manual 47

DRIVERS INSTALLATION

Realtek High Definition Audio Driver
Installation

Follow the steps below to install the Realtek HD Codec Audio Drivers.

1. Insert the CD that comes with the board. Click Intel and then Intel(R)
G41 Chipset Drivers.

2. Click Realtek High Definition Audio Driver.

48

MI941 User’s Manual

DRIVERS INSTALLATION

3.When the welcome screen to InstallShield Wizard for Realtek High
Definition Audio Driver appears, click Next to start the installation.

4.When the InstallShieldWizard has finished performing maintenance
operations on Realtek High Definition Codec Audio Audio Driver, click
Finish to restart the computer.

MI941 User’s Manual 49

DRIVERS INSTALLATION

Intel PRO LAN Network Drivers Installation

Follow the steps below to install Intel PRO LAN drivers.

1. Insert the CD that comes with the board. Click Intel and then Intel(R)
G41 Chipset Drivers.

2. Click Intel(R) Gigabit Ethernet Drivers.

50

MI941 User’s Manual

DRIVERS INSTALLATION

3. In the Intel® Network Connections screen*, click Install Drivers and
Software.

4. In the welcome screen of the InstallShield Wizard for Intel(R)
Network Connections, click Next.

MI941 User’s Manual 51

DRIVERS INSTALLATION

5. In the License Agreement, Select I accept the terms in the license
agreement and click Next.

6. In the Setup Options, click the checkbox as shown below and click
Next.

52

MI941 User’s Manual

DRIVERS INSTALLATION

7. In the InstallShield Wizard screen, click Install to begin the
installation.

8. InstallShield Wizard is completed. Click Finish to exit the Wizard.

MI941 User’s Manual 53

APPENDIX

Appendix

A. I/O Port Address Map

Each peripheral device in the system is assigned a set of I/O port
addresses that also becomes the identity of the device. The followin g
table lists the I/O port addresses used.

Address Device Description

000h - 01Fh DMA Controller #1
020h - 03Fh Interrupt Controller #1
040h - 05Fh Timer
060h - 06Fh Keyboard Controller
070h - 07Fh Real Time Clock, NMI
080h - 09Fh DMA Page Register
0A0h - 0BFh Interrupt Controller #2
0C0h - 0DFh DMA Controller #2
0F0h Clear Math Coprocessor Busy Signal
0F1h Reset Math Coprocessor
1F0h - 1F7h IDE Interface
278h - 27Fh Parallel Port #2(LPT2)
2F8h - 2FFh Serial Port #2(COM2)
2B0h - 2DFh Graphics adapter Controller
378h - 3FFh Parallel Port #1(LPT1)
360h - 36Fh Network Ports
3B0h - 3BFh Monochrome & Printer adapter
3C0h - 3CFh EGA adapter
3D0h - 3DFh CGA adapter
3F0h - 3F7h Floppy Disk Controller
3F8h - 3FFh Serial Port #1(COM1)

54

MI941 User’s Manual

APPENDIX

B. Interrupt Request Lines (IRQ)

Peripheral devices use interrupt request lines to notify CPU for the
service required. The following table shows the IRQ used by the devices
on board.

Level Function

IRQ0 System Timer Output
IRQ1 Keyboard
IRQ2 Interrupt Cascade
IRQ3 Serial Port #2
IRQ4 Serial Port #1
IRQ5 Reserved
IRQ6 Floppy Disk Controller
IRQ7 Parallel Port #1
IRQ8 Real Time Clock
IRQ9 Reserved
IRQ10 Reserved
IRQ11 Reserved
IRQ12 PS/2 Mouse
IRQ13 80287
IRQ14 Primary IDE
IRQ15 Secondary IDE

MI941 User’s Manual 55

APPENDIX

C. Watchdog Timer Configuration

The WDT is used to generate a variety of output signals after a user
programmable count. The WDT is suitable for use in the prevention of
system lock-up, such as when software becomes trapped in a deadlock.
Under these sorts of circumstances, the timer will count to zero and the
selected outputs will be driven. Under normal circumstance, the user
will restart the WDT at regular intervals before the timer counts to zero.

SAMPLE CODE:

//=======================================================================
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
//=======================================================================
====
#include <stdio.h>
#include <stdlib.h>
#include "W627EHF.H"
//=======================================================================
====
int main (int argc, char *argv[]);
void copyright(void);
void EnableWDT(int);
void DisableWDT(void);
//=======================================================================
====
int main (int argc, char *argv[])
{
unsigned char bBuf;
unsigned char bTime;
char **endptr;

copyright();

if (argc != 2)
{
printf(" Parameter incorrect!!\n");
return 1;
}

if (Init_W627EHF() == 0)
{
printf(" Winbond 83627HF is not detected, program abort.\n");
return 1;
}
bTime = strtol (argv[1], endptr, 10);

56

MI941 User’s Manual

APPENDIX

printf("System will reset after %d seconds\n", bTime);

EnableWDT(bTime);

return 0;
}
//=======================================================================
void copyright(void)
{
printf("\n======== Winbond 83627EHF Watch Timer Tester (AUTO DETECT)
========\n"\
" Usage : W627E_WD reset_time\n"\
" Ex : W627E_WD 3 => reset system after 3 second\n"\
" W627E_WD 0 => disable watch dog timer\n");
}
//=======================================================================
void EnableWDT(int interval)
{
unsigned char bBuf;

bBuf = Get_W627EHF_Reg( 0x2D);
bBuf &= (!0x01);
Set_W627EHF_Reg( 0x2D, bBuf); //Enable WDTO

Set_W627EHF_LD( 0x08); //switch to logic device 8
Set_W627EHF_Reg( 0x30, 0x01); //enable timer

bBuf = Get_W627EHF_Reg( 0xF5);
bBuf &= (!0x08);
Set_W627EHF_Reg( 0xF5, bBuf); //count mode is second

Set_W627EHF_Reg( 0xF6, interval); //set timer
}
//=======================================================================
void DisableWDT(void)
{
Set_W627EHF_LD(0x08); //switch to logic device 8
Set_W627EHF_Reg(0xF6, 0x00); //clear watchdog timer
Set_W627EHF_Reg(0x30, 0x00); //watchdog disabled
}
//=======================================================================

MI941 User’s Manual 57

APPENDIX

//=======================================================================
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
//=======================================================================
====
#include "W627EHF.H"
#include <dos.h>
//=======================================================================
====
unsigned int W627EHF_BASE;
void Unlock_W627EHF (void);
void Lock_W627EHF (void);
//=======================================================================
unsigned int Init_W627EHF(void)
{
unsigned int result;
unsigned char ucDid;

W627EHF_BASE = 0x2E;
result = W627EHF_BASE;

ucDid = Get_W627EHF_Reg(0x20);
if (ucDid == 0x88)
{ goto Init_Finish; }

W627EHF_BASE = 0x4E;
result = W627EHF_BASE;
ucDid = Get_W627EHF_Reg(0x20);
if (ucDid == 0x88)
{ goto Init_Finish; }

W627EHF_BASE = 0x00;
result = W627EHF_BASE;

Init_Finish:
return (result);
}
//=======================================================================
void Unlock_W627EHF (void)
{
outportb(W627EHF_INDEX_PORT, W627EHF_UNLOCK);
outportb(W627EHF_INDEX_PORT, W627EHF_UNLOCK);
}
//=======================================================================
====
void Lock_W627EHF (void)
{
outportb(W627EHF_INDEX_PORT, W627EHF_LOCK);
}
//=======================================================================
void Set_W627EHF_LD( unsigned char LD)
{
Unlock_W627EHF();
outportb(W627EHF_INDEX_PORT, W627EHF_REG_LD);
outportb(W627EHF_DATA_PORT, LD);

58

MI941 User’s Manual

APPENDIX

Lock_W627EHF();
}
//=======================================================================
void Set_W627EHF_Reg( unsigned char REG, unsigned char DATA)
{
Unlock_W627EHF();
outportb(W627EHF_INDEX_PORT, REG);
outportb(W627EHF_DATA_PORT, DATA);
Lock_W627EHF();
}
//=======================================================================
unsigned char Get_W627EHF_Reg(unsigned char REG)
{
unsigned char Result;
Unlock_W627EHF();
outportb(W627EHF_INDEX_PORT, REG);
Result = inportb(W627EHF_DATA_PORT);
Lock_W627EHF();
return Result;
}
//=======================================================================

//=======================================================================
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
//=======================================================================
#ifndef __W627EHF_H
#define __W627EHF_H 1
//=======================================================================
#define W627EHF_INDEX_PORT (W627EHF_BASE)
#define W627EHF_DATA_PORT (W627EHF_BASE+1)
//=======================================================================
#define W627EHF_REG_LD 0x07
//=======================================================================
#define W627EHF_UNLOCK 0x87
#define W627EHF_LOCK 0xAA
//=======================================================================
unsigned int Init_W627EHF(void);
void Set_W627EHF_LD( unsigned char);
void Set_W627EHF_Reg( unsigned char, unsigned char);
unsigned char Get_W627EHF_Reg( unsigned char);
//=======================================================================
#endif //__W627EHF_H

MI941 User’s Manual 59

APPENDIX

File of the Main.cpp
//=====================================================================
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//=====================================================================
#include <dos.h>
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include "W627HF.H"
//=====================================================================
void ClrKbBuf(void);
int main (int argc, char *argv[]);
//=====================================================================
int main (int argc, char *argv[])
{
unsigned char ucDO = 0; //data for digital output
unsigned char ucDI; //data for digital input
unsigned char ucBuf;

Set_W627HF_LD( 0x07); //switch to logic device 7

Set_W627HF_Reg(0xF1, 0x00); //clear
ucDI = Get_W627HF_Reg(0xF1) & 0x0F;

ClrKbBuf();
while(1)
{
ucDO++;
Set_W627HF_Reg(0xF1, ((ucDO & 0x0F) << 4));
ucBuf = Ge t_W627HF_Reg(0xF1) & 0x0F;
if (ucBuf != ucDI)
{
ucDI = ucBuf;
printf("Digital I/O Input Changed. Current Data is 0x%X\n",ucDI);
}

if (kbhit())
{
getch();
break;
}
delay(500);
}
return 0;
}
//=====================================================================
void ClrKbBuf(void)
{
while(kbhit())
{ getch(); }
}

//---------------------------------------------------------------------------

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MI941 User’s Manual