MSI 850 Pro2 User manual

Introduction
1-1
Chapter 1.
Introduction
The MS-6523 ATX mainboard is a high-performance computer
mainboard based on Intel®82850 chipset. The MS-6523 is optimized to
support the Intel®Pentium®4 processor for high-end business/personal
desktop markets.
The Intel®Tehama chipset supports 64B cache line size and a 32-bit
host addressing, allowing the processor to access the entire 4GB of the
chipset’s memory address space. It also provides 4x AGP data transfers and
AGP Fast Writes capability.
The Intel®Tehama chipset features a dual channel Direct RDRAM
memory operating in lock-step using RSL technology. It is a highly-flexible
chipset which is designed to extend the basic graphics/multimedia PC
platform up to the mainstream performance desktop platform.
The Intel®82801BA (ICH2) chipset is a highly integrated
multifunctional I/O Controller Hub that provides the interface to the PCI Bus
and integrates many of the functions needed in today’s PC platforms. It
communicates with the host controller over a dedicated hub interface and
provides added flexibility in designing cost-effective system solutions.
This chapter includes the following topics:
Mainboard Specification 1-2
Mainboard Layout 1-4
Quick Components Guide 1-5
Key Features 1-6
MSI Special Features 1-7
1

Chapter 1
1-2
CPU
zSupports Intel®Willamette processor
zSupports1.3GHz,1.4GHz,1.5GHz,1.7GHz,2.0GHzorfaster
Chipset
zIntel®Tehama chipset
-Up to2GB maximummemory (Rambus)
- AGP interface with 4x SBA/Data Transfer
zIntel®ICH2 chipset
- AC’97 Controller Integrated
- 2 Full IDE channels, up to ATA100
- Low pin count interface for SIO
Main Memory
zSupports four 184-pin gold-lead RIMM sockets
zSupportsamaximummemorysizeof 2GB
Slots
zOne AGP (Accelerated Graphics Port) slot
- supports 4x mode
zOne CNR (Communication Network Riser) slot
zFour 32-bit/33MHz Master PCI Bus slots.
zSupports 3.3v/5v PCI bus Interface
On-Board IDE
zAn IDE controller on the Intel®ICH2 chipset provides IDE HDD/CD-ROM
with PIO, Bus Master and Ultra DMA 33/66/100 operation modes.
zCan connect up to four IDE devices
Integrated Super I/O Controller
zWinbond W83627HF-AW I/O controller
- 1 floppy port supports 2 FDDs with 360K, 720K, 1.2M, 1.44M and
2.88M bytes.
- 2 serial ports (COM A + COM B)
- 1 parallel port supports SPP/EPP/ECP mode
- 4 USB ports (Rear*2 / Front*2)
Mainboard Specification

Introduction
1-3
- 1 IrDA connector for SIR
Audio
zICH2 chip integrated
zAC’97 Codec
BIOS
zThe mainboard BIOS provides “Plug & Play” BIOS which detects the
peripheral devices and expansion cards of the board automatically.
zIDE drive auto configure, Advanced Power Management (APM) 1.2,
ACPI 1.0, DMI 2.0, ECC/Parity support, LS-120 support.
Dimension
zATX Form Factor : 12 inches (L) x 9 inches (W) x 4 layers PCB
Mounting
z10 mounting holes

Chapter 1
1-4
Mainboard Layout
MS-6523 ATX Mainboard
AGP Slot
BATT
+
ICH2
J18
J19 JWOL1 JMDM1 JGL1
(Optional)
J16
J17
SYSFAN
JRMS1
JFP1
Codec
JWR1
Winbond
W83627HF
ATX
PowerSupply
CPUFAN
JWR2
PSFAN1
FWH
PCI Slot 4
PCI Slot 3
PCI Slot 2
PCI Slot 1
IDE1
IDE2
CNR
USB
ports
Top :
Parallel Port
Bottom:
COMA
COMB
T : mouse
B: keyboard
J8
J11J10
J12
Top :
Gameport
Bottom:
Line-Out
Line-In
Mic
FDD1
D-LED (Optional)
RIMM2
RIMM3
RIMM4
RIMM1

Introduction
1-5
Quick Components Guide
Component Function Reference
RIMM1~4 Installing RIMM modules See p. 2-4~2-5
Socket 423 Installing CPU See p. 2-2~2-3
CPUFAN Connecting to CPU FAN See p. 2-20
SYSFAN Connecting to SYSTEM FAN See p. 2-20
PSFAN1 Connecting to POWER SUPPLY FAN See p. 2-20
ATX Power Supply Installing power supply See p. 2-6
JWR1 Connecting to 12V ATX power supply See p. 2-7
JWR2 Connecting to 5V/3V ATX power supply See p. 2-7
IDE1& IDE2 Connecting to IDE hard disk drives See p. 2-13
FDD1 Connecting to floppy disk drive See p. 2-12
JUSB1 Connecting to USB interfaces See p. 2-22~2-24
PCI Slot 1~4 Installing expansion cards See p. 2-30
AGP Slot Installing AGP cards See p. 2-30
CNR Slot Installing CNR cards See p. 2-30
JMDM1 Connecting to modem module See p. 2-18
JWOL1 Connecting to LAN module See p. 2-18
JBAT1 Clearing CMOS data See p. 2-25
JFP1 Connecting to case See p. 2-14
JGS1 Connecting to power saving switch See p. 2-17
JGL1 Connecting to power saving LED See p. 2-16
J18 Connecting to IR module See p. 2-19
J12 Connecting to chassis intrusion switch See p. 2-19
JRMS1 Connecting to power switch See p. 2-17
J15 Setting beep output device See p. 2-29
J16 Enabling BIOS flash function See p. 2-28
J17 Clearing BIOS password See p. 2-28
J19 Enabling onboard audio codec See p. 2-27
J20 Setting RDRAM voltage See p. 2-26

Chapter 1
1-6
zATX Form Factor
zCPU: Socket 423 for Intel®Willamette Processors
zMemory: 4 RIMM DIMMs
zSlot: 1 AGP slot, 1 CNR slot, 4 PCI slots
zI/O: 2 serial ports, 1 parallel port, 4 USB 1.1 ports, 1 floppy port, 1 IrDA
connector, 1 Audio/Game port
zUSB Interface: USB 1.1 PC to PC Networking (Optional)
zLAN Wake up Function
zModem (External/Internal) Ring Wake up Function
zD-LED™ --4DiagnosticsLEDs embedded on themainboard(Optional)
zPC AlertTM III system hardware monitor (Optional)
zAudio: Chip integrated
Key Features

Introduction
1-7
PC Alert™ III (Optional)
The PC AlertTM III is a utility you can find in the CD-ROM disk. The
utility is just like your PC doctor that can detect the following PC hardware
status during real time operation:
* monitor CPU & system temperatures
* monitor fan speed(s)
* monitor system voltage
* monitor chassis intrusion
If one of the items above is abnormal, the program main screen will be immedi-
ately shown on the screen, with the abnormal item highlighted in red. This will
continue to be shown,until user disables the warning.
MSI Special Features
Note: Items shown on PC Alert III vary depending on your system’s status.
The MSI special features are designed by MSI R&D which are only available in
MSI mainboards. The MS-6523 mainboard is optionally equipped with PC
Alert™IIIandD-LED™.

Chapter 1
1-8
Features:
zNetwork Management
- Monitoring & remote control
zBasic System Utilities
- Scandisk & Defragment to maintain your HDD
z3D Graphics Design
- Enables a more friendly user interface
zSofwareUtilities
- SoftCooler Optimized Cooling

Introduction
1-9
D-LED™ (Optional)
D-LED Description
System Power ON
- The D-LED will hang here if the processor is damaged or not
installed properly.
Early Chipset Initialization
Memory Detection Test
- Testing onboard memory size. The D-LED will hang if the
memory module is damaged or not installed properly.
Decompressing BIOS image to RAM for fast booting.
Initializing Keyboard Controller.
Testing VGA BIOS
- This will start writing VGA sign-on message to the screen.
Red Green
The D-LED™ uses graphic signal display to help
users understand their system. Four LEDs embedded in
the mainboard provide up to 16 combinations of signals to
debug the system. The 4 LEDs can debug all problems that
fail the system, such as VGA, RAM or other failures. This
special feature is very useful for the overclocking users.
These users can use the feature to detect if there are any
problems or failures.
4
3
2
1
Diagnostic LED
1 2 3 4

Chapter 1
1-10
Processor Initialization
- This will show information regarding the processor (like brand
name, system bus, etc…)
Testing RTC (Real Time Clock)
Initializing Video Interface
- This will start detecting CPU clock, checking type of video
onboard. Then, detect and initialize the video adapter.
BIOS Sign On
- This will start showing information about logo, processor
brand name, etc….
Testing Base and Extended Memory
- Testing base memory from 240K to 640K and extended
memory above 1MB using various patterns.
Assign Resources to all ISA.
Initializing Hard Drive Controller
- This will initialize IDE drive and controller.
Initializing Floppy Drive Controller
- This will initializing Floppy Drive and controller.
Boot Attempt
- This will set low stack and boot via INT 19h.
Operating System Booting