MSI MICRO ATX AL12 Bedienungsanleitung
CHAPTER 1 INTRODUCTION
1-1
Chapter 1
INTRODUCTION
The MICRO ATX AL12 mainboard is a high-performance personal computer
mainboard. This mainboard supports Intel® Pentium® processor/Pentium®
processor with MMXTM technology,AMD® K5/K6/K6-2, and Cyrix® 6x86/
6x86L/6x86MX/MII processors. This mainboard combines leading edge
AGPATI®3D 128VR technology in graphics and Creative®ES1373PCI
Enhanced technology in audio. The mainboard also supports three 32-bit
PCI (Peripheral Component Interconnect) Local Bus standard slots.
The mainboard uses the highly integrated Aladdin® 5 chipset to support the
PCI/ISA and Green standards, and to provide the Host/AGP bridge. The
Aladdin® 5 chipset 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 Aladdin® 5 chipset also improves the IDE transfer rate by
supporting Ultra DMA/33 IDE that transfer data at the rate of 33MB/s.
The mainboard also supports the Hardware Monitor Controller as an
optional function. This function includes: CPU/chassis/power fan control,
CPU temperature detect and protect, and system voltage detect.
CHAPTER 1 INTRODUCTION
1-2
1.1 Mainboard Features
CPU
lSocket 7 supports Intel®Pentium®processor/Pentium®processor with
MMXTM technology.
lCyrix®6x86/6x86L/6x86MX/MIIaresupported.
lAMD®K6/K6-2/K6-3 processors are supported.
Chipset
lAladdin® 5M1541/M1543Cchipset.
FSB (Front Side Bus)
l100/95/83.3/75/66/60MHzclocksaresupported.
Cache Memory
lSupports 512K or 1MB Pipelined Burst cache memory.
Switching Regulator
lProvidesCPUwithvoltagerangingfrom1.3Vto3.5V
lSupport VI/O 3.45 for AMD K6 300 processor
Main Memory
lSupports four memory banks using two 168-pin unbuffered DIMM.
lSupportsamaximummemorysize of 256MB.
lSupports 3.3v Extended Data Output (EDO) and SDRAM DIMM.
Slots
lThree 32-bit Master PCI Bus slots and one 16-bit ISA bus slots. (wherein
one PCI/ISA is shared)
lSupports 3.3v/5v PCI bus Interface.
On-Board IDE
lAn IDE controller on the Aladdin®M1543C PCI Chipset provides IDE
HDD/CD-ROMwith PIO, DMA and Ultra DMA/33 operation modes.
lConnect up to four IDE devices.
CHAPTER 1 INTRODUCTION
1-3
Video
lATI®3D 128 VR
-Running on AGP BUS.
-Onboard8MB SDRAM.
- 3D Acceleration.
Audio
lCreative®ES1373
-Runningon PCI BUS.
-64VoiceandAC3Capable
- Support Direct Sound and Direct Sound 3D
-AC97’Compliant
On-Board Peripherals
lOn-BoardPeripherals include:
- 1 floppy port supports 2 FDD with 360K, 720K, 1.2M, 1.44M and
2.88Mbytes.
- 1 serial ports (COMA)
- 1 parallel port supports SPP/EPP/ECP mode
- 2 USB ports
-1 IrDA connector for SIR/FIR.
-1VGAport
BIOS
lThe mainboard BIOS provides “Plug & Play” BIOS which detects the
peripheral devices and expansion cards of the board automatically.
lThe mainboard provides a Desktop Management Interface(DMI) function
which records your mainboard specifications.
Dimension
lMicro-ATXformfactor: 24.4cm(L)x 24.5cm(W)x 4layersPCB
Mounting
l7 mounting holes.
CHAPTER 1 INTRODUCTION
1-4
Remote Control
lMeet ACPI specifications.
lPower ON/OFF switch connector on-board.
lSoftPower-Off.
lSupport modem ring wake-up .
lSupportalarmwake-up.
lSupport LAN wake-up.
CHAPTER 1 INTRODUCTION
1-5
1.2 Mainboard Layout
MS-5185 MICRO ATX AL12 Mainboard
Socket 7
DIMM
DIMM 2
FDD1
IDE 1
PCISlot
BIOS
IDE 2
PCISlot
PCISlot
ISA Slot
ATX
PowerSupply
Aladdin® 5
chipset
T:Mouse
B:
Keyboard
T:PrinterPort
B:SerialPort/
VGAPort
USB
Ports
Batt
DIMM 1
SW
PCUFAN
Socket 7
ATI® 3D
RAGE
PRO
Turbo
Creative
ES1371
JTAD1
JAUX1
CHSFAN
JFP1
Aladdin®
M1543C
chipset
SDRAM
Top: Midi/
GamePort
Bottom:
Line-In
Line-Out
Mic
SDRAM
SDRAM
SDRAM
JCD1
JSFAN
JV1 1
5
JSCL1
JCMOS
CHAPTER 2 HARDWARE INSTALLATION
2-1
CPU
CPU
Chapter 2
HARDWARE INSTALLATION
2.1 Central Processing Unit: CPU
The MICROATXAL12mainboard operates with Intel®Pentium®proces-
sor/Pentium® processor withMMXTM technology,AMD®K5/K6/K6-2,and
Cyrix®6x86/6x86L/6x86MX/MII processors. It could operate with 2.0V to
3.5V processors. The mainboard provides a 321-pin ZIF Socket 7 for easy
CPU installation, a DIP switch (SW1) to set the proper speed for the CPU
and (JV1) for setting the CPU voltage. It is recommended that the processor
should have a cooling fan attached to prevent from overheating.
3. Press the lever down to
complete the installation.
2. Locate Pin 1 in the socket
and look for the white dot or
cut edge in the CPU. Match
Pin 1 with the white dot/cut
edge. Then, insert the CPU.
It should insert easily.
OpenLever
Pin1
Sliding
Plate
White dot/
Cut edge
Close
Lever
1. Pull the lever sideways away
from the socket. Then, raise
the lever up to a 90-degree
angle.
2.1-1 CPU Installation Procedure
CHAPTER 2 HARDWARE INSTALLATION
2-2
2.1-2 CPU Core Speed Derivation Procedure
4 5 6 Clock
OFF OFF OFF 100MHz
ON OFF OFF 95MHz
OFF ON OFF 83MHz
OFF OFF ON 75MHz
OFF ON ON 66MHz
ON ON ON 60MHz
ON OFF ON 68MHz
SW1 CPU
1. The DIP Switch SW1 (4, 5, & 6) is used to adjust the CPU clock frequency.
2. The DIP Switch SW1 (1, 2, and 3) is used to set the Core/Bus (Fraction)
ratio of the CPU. The actual core speed of the CPU is the Host Clock
Frequency multiplied by the Core/Bus ratio. For example:
If CPUClock = 66MHz
Core/Busratio = 3/2
then CPUcore speed = Host Clock x Core/Bus ratio
= 66MHz x 3/2
= 100MHz
SW1 CPU
1 2 3 Core/Bus Ratio
OFF OFF ON 5.5x
OFF ON ON 5x
ON ON ON 4.5x
ON OFF ON 4x
OFF OFF OFF 3.5x
OFF ON OFF 3x
ON ON OFF 2.5x
ON OFF OFF 2x
CHAPTER 2 HARDWARE INSTALLATION
2-3
2.1-3 CPU Voltage Setting: JV1
JV1
1
2
3
4
5
Vcore
V I/O
3.4 3.4
3.4 3.3
3.4 3.2
3.4 2.9
JV1 VcoreV I/O
3.4 2.8
3.4 2.3
3.4 2.2
JV1
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
CHAPTER 2 HARDWARE INSTALLATION
2-4
1 2 3 4 5 VI/O VCore
OFF OFF OFF OFF ON 3.45 1.3
ON OFF OFF OFF ON 3.45 1.35
OFF ON OFF OFF ON 3.45 1.4
ON ON OFF OFF ON 3.45 1.45
OFF OFF ON OFF ON 3.45 1.5
ON OFF ON OFF ON 3.45 1.55
OFF ON ON OFF ON 3.45 1.6
ON ON ON OFF ON 3.45 1.65
OFF OFF OFF ON ON 3.45 1.7
ON OFF OFF ON ON 3.45 1.75
OFF ON OFF ON ON 3.45 1.8
ON ON OFF ON ON 3.45 1.85
OFF OFF ON ON ON 3.45 1.9
ON OFF ON ON ON 3.45 1.95
ON ON ON ON ON 3.45 2.0
ON OFF OFF OFF OFF 3.45 2.1
OFF ON OFF OFF OFF 3.45 2.2
ON ON OFF OFF OFF 3.45 2.3
OFF OFF ON OFF OFF 3.45 2.4
ON OFF ON OFF OFF 3.45 2.5
OFF ON ON OFF OFF 3.45 2.6
ON ON ON OFF OFF 3.45 2.7
OFF OFF OFF ON OFF 3.45 2.8
ON OFF OFF ON OFF 3.45 2.9
OFF ON OFF ON OFF 3.45 3.0
ON ON OFF ON OFF 3.45 3.1
OFF OFF ON ON OFF 3.45 3.2
ON OFF ON ON OFF 3.45 3.3
OFF ON ON ON OFF 3.45 3.4
ON ON ON ON OFF 3.45 3.5
Other CPU Voltage Setting
CHAPTER 2 HARDWARE INSTALLATION
2-5
To set the proper speed and voltage of the CPU, you must know the specifi-
cations of your CPU (always ask the vendor for CPU specifications).
Then refer to Table 2.1 (Intel®Processor), Table 2.2 (Cyrix®
Processor), and Table 2.3 (AMD®Processor) for proper setting.
2.1-3 CPU Speed and Voltage Setting: SW1 and JV1
SW1
JV1
1
2
3
4
5
ON
OFF
1234
ON
65
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