MSI MS-5156 User manual

CHAPTER 1 INTRODUCTION
Chapter 1
INTRODUCTION
The MS-5156 mainboard is a high-performance personal computer
mainboard. The mainboard supports the Peripheral Component Interconnect
(PCI) Local Bus standard and provides five 32-bit PCI bus slots.
The mainboard uses the highly integrated Intel®83430TX chipset to support
the PCI/ISA and Green standards, and to provide the Host/PCI bridge. The
Intel®82430TX chipset integrates all system control functions.
1-1

CHAPTER 1 INTRODUCTION
1.1 System Board Features
CPU
lSocket 7 supports Intel® Pentium® processors and Pentium® processors
with MMX™ technology
lTheCyrix®6x86/6x86L/6x86MX andAMD®K5/K6 are alsosupported.
Chipset
lIntel®82430TXchipset.
Cache Memory
lSupports 512K pipelined burst cache memory.
lSupports Direct Map Organization and Write-Back cache policy.
Main Memory
lSupports four memory banks using four 72-pin SIMM sockets and two
168-pin DIMM sockets (for unbuffered DIMM).
lUp to 256 Mbytes main memory.
lSupports EDO Hyper Page Mode DRAM, Standard Fast Page mode
DRAM and SDRAM(Synchronous DRAM).
Slots
lFive 32-bit PCI Bus slots (four 32-bit bus master PCI slots + one 32-bit
slave PCI slot) + Three 16-bit ISA bus slots. One shared slot can be used
asISAorPCI.
On-Board IDE
lSupports Bus Master and Ultra DMA/33 IDE.
lSupports up to 4 IDE drives.
On-Board Peripherals
1-2

CHAPTER 1 INTRODUCTION
1-3
lOn-BoardPeripherals include:
- 1 floppy port supports 2 FDD
-2serialports(COMA+COMB)
- 1 parallel port supports ECP or EPP mode
-USB
-IR(SIR)
Dimensions
lBaby-ATform factor
l25cm(L)x22cm(W)x4layerPCB
Mounting
l5 mounting holes

CHAPTER 1 INTRODUCTION
1.2 Parts of the Mainboard
ABC
DE
F
GH
I
J
A Three 16-Bit ISA SLOTs
B Five 32-Bit PCI SLOTs
C Two 168-Pin DIMM SOCKETs
D ATX 20-PinPOWER CONNECTOR
E PS/2®POWER CONNECTOR
F Four 72-pin SIMM SOCKETs
G Intel®82439TX
H Intel®82371AB
I SOCKET7
J 2032LITHIUM BATTERY
1-4

CHAPTER 1 INTRODUCTION
1.3 Mainboard Layout
1-5
MS-5156
ISA SLOT
ISA SLOT ISA SLOT
PCI SLOT 5
PCI SLOT 4
PCI SLOT 3
PCI SLOT 2 PCI SLOT 1
FDC
DIMM 2
DIMM 1
SIMM 4
SIMM 1 SIMM 2 SIMM 3
LPT
ATKBD
COMA
COM B
BIOS
ATX
Power Supply
USB
Power Supply
JRMS1
JMS1
JIR1
JP2
JP1 Winbond
J10
JBAT1
FW82371AB FW82439TX
IDE2
IDE1
BATT
+JV1
3.3V 5V
JRMC1
JRMS2
SW1
PBSRAM
SOCKET 7
JFAN 2
JFAN 1
JGS1
JGL1
JFP1
JV8
JV2
JV3
JV4
JV5
JSFAN
JPFAN

CHAPTER 2 HARDWARE INSTALLATION
CPU
CPU
2.1-1 CPU Installation Procedures
Chapter 2
HARDWARE INSTALLATION
2.1 Central Processing Unit: CPU
The MS-5156 mainboard operates with Intel®Pentium® processors/
Pentium®processors with MMXTM technology, Cyrix®6x86/6x86L/
6x86MX and AMD®K5/K6 processors. It could operate with 2.8V to
3.52V 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 a Jumper block (JV2 - JV5) for setting the CPU voltage. The CPU
should always have a cooling fan attached to prevent overheating.
2-1
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.

CHAPTER 2 HARDWARE INSTALLATION
2-2
2.1-2 CPU Voltage Setting: JV2-JV5
VcoreV I/O
3.5 3.5
3.3 3.3
3.3 3.2
3.3 2.9
3.3 2.8
JV2~JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5

CHAPTER 2 HARDWARE INSTALLATION
VcoreV I/O
3.3 2.7
3.3 2.6
3.3 2.5
3.3 2.4
3.3 2.3
JV2~JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
3.3 2.2
3.3 2.1
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
2-3

CHAPTER 2 HARDWARE INSTALLATION
To adjust the speed and voltage of the CPU, you must know the specifica-
tions of your CPU (always ask the vendor for CPU specifications). Then
refer to Table 2.1 (Intel®processors), Table 2.2 (Cyrix®processors) and
Table 2.3 (AMD®processors) for proper setting.
2.1-3 CPU Speed and Voltage Setting: SW1 & JV2-JV5
2-4
SW1
1 2 3 4 5 6
ON DIP ON
OFF
JV2
JV3
JV4
JV5

CHAPTER 2 HARDWARE INSTALLATION
Table 2.1 Intel®processors
90MHz
100MHz
120MHz
133MHz
150MHz
166MHz
200MHz
3.38
3.52
3.52
3.38
3.38
3.52
3.52
3.52
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
CPU Type CPU SpeedCPU Voltage
SW1VI/O Vcore
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
2-5
JV2~JV5
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
166MHz
200MHz 3.3 2.8
233MHz
Intel®Pentium®processors with MMXTMtechnology
Note: If you encounter a CPU with different voltage, just go to page 2-2 and look for
the proper voltage settings.
Intel®Pentium®processors
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5

CHAPTER 2 HARDWARE INSTALLATION
Table 2.2 Cyrix®6x86/6x86L/6x86MX processors
Cyrix®6x86 processor uses PR to rate the speed of their processors based
on Intel®Pentium®processor core speed. For example PR150 (120MHz)
has 150MHz core speed of Intel®Pentium®processor but has 120MHz core
speed in Cyrix®. Cyrix®6x86 processor should always use a more powerful
fan (ask vendor for proper cooling fan).
3.52
ON DIP
123 456
ON
OFF
CPU Type CPU SpeedCPU Voltage
SW1VI/O Vcore
6x86
PR133
6x86
PR150
6x86L
PR166
ON DIP
123 456
ON
OFF
2-6
3.3 2.8
JV2~JV5
ON DIP
123 456
ON
OFF
6x86
PR166 3.3
3.3 JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
Cyrix®6x86/6x86L processors

CHAPTER 2 HARDWARE INSTALLATION
CPU Type CPU SpeedCPU Voltage
SW1VI/O Vcore
PR166
PR200
PR266
ON DIP
123 456
ON
OFF
JV2~JV5
ON DIP
123 456
ON
OFF
PR233 2.9 JV2
JV3
JV4
JV5
Cyrix®6x86MX processors
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
ON DIP
123 456
ON
OFF
(60x2.5)
(66x2)
(66x2.5)
(75x2)
(66x3)
(75x2.5)
(66x3.5)
(75x3)
Note: PR200(75x2), PR233, and PR266 CPU are not yet tested, so we still
don’t guarantee the performances of this CPUs.
2-7

CHAPTER 2 HARDWARE INSTALLATION
Table 2.3 AMD®K5/K6 processors
AMD®K5/K6 CPU uses PR to rate the speed of their processors based on
Intel®CPU corespeed. Forexample PR133(100MHz) has 133MHz core
speed of Intel®Pentium®processor but has 100MHz core speed in AMD®
K5 CPU.
ON DIP
123 456
ON
OFF
3.52
ON DIP
123 456
ON
OFF
123 456
CPU Type CPU SpeedCPU Voltage
SW1
VI/O Vcore
PR100
PR120 ON DIP
123 456
ON
OFF
2-8
PR133/PR150
JV2~JV5
PR90
PR166
ON DIP ON
OFF
ON DIP ON
OFF
ON DIP
123 456
ON
OFF
3.3 ON DIP
123 456
ON
OFF
PR200
PR233 ON DIP
123 456
ON
OFF
PR166 2.9
AMD®K6 processors
3.3 3.2
Note: If you encounter a CPU with different voltage, just go to page 2-2 and
look for the proper voltage settings.
AMD®K5 processors
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5
JV2
JV3
JV4
JV5

CHAPTER 2 HARDWARE INSTALLATION
2.1-4 CPU Fan Power Connector: JFAN1/JFAN2/JSFAN/
JPFAN
JFAN1 connector supports CPU cooling fan with +12V. It supports both two
and three pin head connector. When connecting the wire to the connector,
always take note that the red wire is the positive and should be connected to
the +12V. While JFAN2, JSFAN, and JPFAN system cooling fan with
+12V. It supports three pin head connector. When connecting the wire to
the connector, always take note that the red wire is the positive and should
be connected to the +12V, the black wire is Ground and should be
connected to GND, the yellow is the speed sensor. If your mainboard has
LM78 on board, you need to use a specially designed fan with speed sensor
to take advantage of LM78’s CPU fan control function.
Note: 1. JFAN2/JSFAN/JPFAN is used for CPU Cooling Fan Speed
Connectors.
(Reserved for LM78 System Hardware Monitor Option.)
2. Always consult vendor for proper CPU cooling fan.
2-9
JFAN1
+12VGND GND
JFAN2
SPEED
+12V
GND
SPEED
+12V
GND
JPFAN
SPEED
+12V
GND
JSFAN
JFAN2: CPU FAN
JPFAN: POWER FAN
JSFAN: CHASSIS FAN

CHAPTER 2 HARDWARE INSTALLATION
2.2 PCI and ISA Slots
There are 5 PCI slots and 3 ISA slots. All PCI slots can be used as master.
But since the 1st and 5th PCI slots share the same bus master signal, only
one of these slots can be used as a master at a time; which means that if a
bus master card is installed in PCI slot 1, PCI Slot 5 can only accomodate a
slave card, and vice versa.
2-10
Note: 1. You can only use a3.3 V PCI Card, if the power supply you’re
usingisanATXpowersupplyw/3.3V.
2. PCI Slot 1 toPCISlot 5 IDSEL is AD_24(Device Num=0DM) to
AD_28(DeviceNum = 11H)respectively.
ISA Slots PCI Slots
PCISLOT1 (AD_24)
PCISLOT2 (AD_25)
PCISLOT3 (AD_26) PCISLOT4 (AD_27)
PCISLOT5 (AD_28)

CHAPTER 2 HARDWARE INSTALLATION
SIMM4(Bank4.5)
SIMM3(Bank4.5)
SIMM2(Bank2.3)
SIMM1(Bank2.3)
2-11
DIMM1(Bank2.3)
DIMM2(Bank 0.1)
2.3 Memory Installation
2.3-1 Memory Bank Configuration
Themainboardprovidesfour72-pinSIMMs(SingleIn-LineMemoryModule)
and two 168-pin DIMM(Double In-Line Memory) sockets. It supports six
memory banks for a maximum of 256MB memory. Each bank supports up to
64MBmemory. Youcanuse SIMM from 4MB,8MB,16MB,32MB,64MB to
128MB, andDIMM from8MB, 16MB, 32MB,64MB to 128MB.

CHAPTER 2 HARDWARE INSTALLATION
2.3-2 Memory Installation Procedures:
1. The SIMM slot has a “Plastic Safety
Tab” and the SIMM memory module
has a “Notched End”, so the SIMM
memory module can only fit in one
direction.
2. Insert the SIMM memory modules into
the socket at 45-degree angle, then
push into a vertical position so that it
will snap into place.
3. The Mounting Holes and Metal Clips
should fit over the edge and hold the
SIMM memory modules in place.
A. HowtoinstallSIMMModule
Single Sided SIMM
Double Sided SIMM
Notched
End
2-12

CHAPTER 2 HARDWARE INSTALLATION
B. HowtoinstallDIMMModule
1. The DIMM slot has two keys marked “VOLT and DRAM” , so the
DIMM memory module can only fit in one direction.
2. Insert the DIMM memory module vertically into the DIMM slot.
Then, push it in.
3. Close the plastic clip at the side of the DIMM slot.
SingleSidedDIMM
DoubleSidedDIMM
2-13
DRAM VOLT

CHAPTER 2 HARDWARE INSTALLATION
2-14
B.1 DIMMPower VoltageSelector: JV1
5V
3.3V
SIMMPowerLevel:5Volts
DIMMPowerLevel: 3.3Vor5V
NOTE: DIMMandSIMMcannotbeusedatthesametime. Only
onekindcanbeusedatatime. Ifyouwanttousebothof
thematthesametime,youmustuse5VDIMM.
+3V
+3V
+5V
+5V
JV1
+3V
JV1
DIMM Voltage
+5V