PCchips M750 User manual

The information presented in this publication has been
carefully checked for reliability; however, no responsibility
is assumed for inaccuracies. Specifications are subject to
change without notice.
Trademarks
IBM, PC/AT, PC/XT, PS/2, and OS/2 are trademarks of
International Business Machines Corporation.
Intel and Pentium®II are trademarks of Intel
Corporation.
AMI is a trademark of American Megatrends Inc.
MS-DOS and WINDOWS 95/98/NT, Direct Sound 3D,
Direct Music are registered trademarks of Microsoft
Corporation.
A3D is a trademark of Aureal Inc.
Sound Blaster and SB-Link are trademarks of Creative
Technology Ltd.
PC-cillin and ChipAwayVirus are trademarks of Trend
Micro, Inc.
Copyright (C) 1998.
All Rights Reserved.
M750, Version 1.2
I6dX/December, 1998

ii
Contents
Chapter 1: Introduction ......................................................................1
Key Features ...................................................................................2
Unpacking the Mainboard & Static Electricity Precautions.....5
Chapter 2: Hardware Configuration ................................................ 6
Mainboard Component Locations ...............................................7
CPU Installation .............................................................................8
Installation Procedures...........................................................9
CPU Speed Setting................................................................10
J7 – APIC Slot..................................................................11
Memory Installation.....................................................................11
Jumper Settings ............................................................................12
JP4 – CMOS RAM Clear Selector..................................12
ATX Functions & Connectors.....................................................13
PW1 Ð ATX Power Connector .............................................13
J6 (21, 22) Ð Power Button and Suspend Switch
Connector ...............................................................................13
Alarm Wake Up ....................................................................14
LAN/Modem Ring Wake-On .............................................14
J4 Ð LAN Wake-On Connector............................................15
Keyboard Power-On.............................................................15
JP5 – Keyboard Power On Selector ...............................16
Connectors.....................................................................................16
COM2 – Serial Port #2....................................................17
FDC1 – Floppy Disk Drive Connector...........................17
IDE1/IDE2 – Primary/Secondary IDE Connectors .......17
External Connectors Location........................................17
FAN 1, FAN 2 – CPU Fan Power Connectors ..............18
SB1 – SB Link Connector ...............................................18
IR – Infrared Connector..................................................19
Case Connectors: J6...............................................................19
J6 (2, 4, 6, 8, 10) – Keylock & Power LED Connector..20
J6 (1, 3, 5, 7) – Speaker Connector.................................20
J6 (13, 14) – Turbo LED Connector ...............................20
J6 (15, 16) – HDD LED Connector.................................20
J6 (17, 18) – Reset Switch Connector.............................20
Onboard Sound Pro .....................................................................21
Sound and Game (on the External Connectors) ..........21
CD1/CD2 – Analog Audio from CD-ROM...................22
J1 – Digital Audio Connectors .......................................23

iii
JP2 – SPDIF OUT Signal Level Selector........................23
JP6 – Internal SPDIF IN Connector...............................23
Notice for PCI Sound Pro Application...............................24
The Four Speakers System...................................................25
Chapter 3: BIOS Setup .....................................................................27
Entering BIOS Setup ....................................................................28
Default ...........................................................................................28
Load Optimal Settings .........................................................28
Load Best Performance Settings .........................................29
Setup Items....................................................................................29
Standard CMOS Setup .........................................................29
Advanced CMOS Setup .......................................................30
Advanced Chipset Setup .....................................................33
Power Management Setup...................................................35
PCI/Plug and Play Setup.....................................................37
Peripheral Setup....................................................................39
H/W Monitor & CPU PnP Setup .......................................40
Change Supervisor Password .............................................41
Auto-Detect Hard Disks.......................................................41
Save Settings and Exit ..........................................................41
Exit Without Saving..............................................................41
Chapter 4: SoftWare Driver .............................................................42

Chapter 1
Introduction
This mainboard is an Intel 440BX 100MHz highly
integrated high-performance mainboard which supports
Dual Pentium® II microprocessor and provides CPU
Plug and Play feature for faster and easier CPU
installation. The mainboard features highly flexible
configurations and is fully IBM PC/AT compatible.
The mainboard uses a high-end AGPset chipset that
supports the PCI/ISA and Green standards, provides the
Host/AGP bridge, and integrates all system control
functions such as ACPI(Advanced Configuration and
Power Interface). The ACPI provides more energy saving
features for the OSPM(OS Direct Power Management)
function.
The mainboard has a built-in i740 AGP Graphics
Accelerator with 8MB frame buffer and an onboard 3D
PCI Sound Pro to meet PC98' specifications for 3D
Multimedia systems, and built-in Hardware Monitor
circuit to monitor CPU/Chasis temperatures/fan
speeds/voltages with AMI Desktop Client Manager
and options to support Intel LANDesk Client
Manager(LDCM). And the mainboard BIOS provides
Trend's ChipAwayVirus to ensure the entire boot process
virus free.

2Chapter 1
Key Features
The advanced features of the mainboard include:
❏Intel 440BX AGP chipset:
—supports dual Pentium® II 233~500MHz and
single Celeron 266~433MHz CPUs
—supports upgradable I/O APIC module to operate
dual Pentium II processor
—supports 66.6MHz and 100MHz FSB (Front Side
Bus)
—provides CPU Plug and Play feature for faster and
easier CPU installation
❏Memory:
—provides 3 DIMMs for 3.3V SDRAM memory
modules
—supports a maximum size of 768MB system
memory
—supports ECC (1-bit Error Code Correct) function
❏Expansion slots:
—provides 4 PCI, and 3 ISA slots;
❏Onboard 2 IDE ports:
—supports 4 IDE devices maximum
—supports PIO, PCI Bus Master and Ultra
DMA/33/66 operation modes
❏ATX Power Supply:
—provides ATX power connectors and features of
ATX power
—provide Power Button/Suspend Switch and
Keyboard Power On/Off (needs Win98
keyboard) functions
—Alarm Wake Up, LAN/Modem Wake Up
functions
❏Onboard DC-DC Step Down Regulator:
—complies with Intel VRM V8.2 specification
—Over-Voltage and Over-Current protection

Introduction 3
❏Onboard Intel i740 AGP Graphics Accelerator:
—supports AGP Ver 1.0 specification and
66/133MHz
—provides 8MB frame buffer
—high resolution graphic modes up to 1600 x 1200
❏Onboard 3D PCI Sound Pro Features:
—meets PC98' specifications
—full Duplex playback and recording, built-in 16-
bit CODEC with filters
—HRTF 3D Positional Audio technology: supports
both Direct Sound 3D®& A3D®interfaces and
4 channel speakers mode
—supports Windows 3.1/95/98 and Windows NT4.0
—built-in 32 ohm earphone buffer and 3D
surround
—supports MPU-401 Game/MIDI port and legacy
audio SB16
—downloadable Wave-Table Synthesizer supports
Direct Music®
—Digital Audio Interface (SPDIF) In/Out up to
24-bit stereo 44KHz sampling rate voice and
measured 120dB audio quality
—Stereo Mixer supports analog mixing from CD-
Audio, Line-In, and digital mixing from voice,
FM/Wave-Table and digital CD-Audio
❏Onboard Multi-I/O and Peripheral interface,
including:
—1 floppy port with 1 Mb/s transferring rate
—2 serial ports with 16550 compatible with Fast
UART
—1 parallel port with EPP and ECP capabilities
—2 USB ports and PS/2 keyboard/mouse ports
—1 IR interface
❏Built-in Hardware Monitor circuit:
—detects CPU temperature, fan speed, and current
voltages
—supports Intel LANDesk Client Manager (LDCM)

4Chapter 1
❏BIOS:
— Onboard 2M Flash ROM supports complete
ACPI and Legacy PMU and is fully compatible
with PC97 and PC98
— provides Plug & Play function which detects the
peripheral devices and expansion cards
automatically
— supports Trend’s ChipAwayVirus option to
ensure the entire boot process is virus free, no
installation and configuration worries
❏Bundled:
— AMI Desktop Client Manager detects
abnormal condition and thermal management
through the network link or self care
—PC-cillin98 (OEM) provides automatic virus
protection for Windows 95/98 and the Internet
❏Dimension:
— ATX Form Factor, 30.5CM (L) x 22CM (W)

Introduction 5
Unpacking the Mainboard & Static
Electricity Precautions
This Mainboard package contains the following items:
1. This Mainboard and the Device Driver
2. The Slot1 holder and AT cables
3. This User’s Guide
4. SPDIF/IN cable
5. COM2 & Digital Audio ribbon cables/bracket
The mainboard is easily damaged by static electricity.
Follow the precautions below while unpacking or
installing the mainboard.
1. Do not remove the mainboard from its original
package until you are ready to install it.
2. Frequently ground yourself to discharge any static
electric charge that may build up in your body
while working on installation and/or
configuration. For example, you may ground
yourself by grasping an unpainted portion of the
systemÕs metal chassis.
3. Remove the mainboard from its anti-static
packaging and place it on a grounded surface,
component side up.
4. Handle the mainboard by its edges or by the
mounting bracket to avoid touching its
components.
5. Check the mainboard for damage. If any integrated
circuit appears loose, press carefully to seat it
firmly in its socket.
6. Do not apply power if the mainboard appears
damaged. If there is damage to the board contact
your dealer immediately.

Chapter 2
Hardware Configuration
Before you install the mainboard into the system chassis,
you may find it convenient to first configure the
mainboard’s hardware. This chapter describes how to set
jumpers and install memory modules, and where to
attach components, however, the CMOS jumper is set on
the “Clear” position when this mainboard is shipped and
you need to set it to the “Normal” position in order for
the mainboard perform properly.
Warning: Set JP4 to “Normal” position before setting other
jumpers or memory modules. This mainboard will
not function properly if you fail to do so.