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CHAPTER 1 INTRODUCTION
Chapter 1
INTRODUCTION
The MS-6112 is a high-performance personal computer mainboard based on
®
the Pentium II processor.
®
The mainboard uses the highly integrated Intel 82440LX AGPset which
optimize the system bandwidth and concurrency with the implementation of
Quad Port Acceleration (QPA). QPA provides 4-port concurrent arbitration
of the processor bus, graphics, PCI bus and SDRAM.
®
The Intel 82371AB chipset integrates all system control functions such as
ACPI (Advanc
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CHAPTER 1 INTRODUCTION 1.1 Mainboard Features CPU ® l Slot 1 for Pentium II processor l Supports 200MHz, 233MHz, 266MHz, 300MHz, and 333MHz. l Core/Bus ratios are x2, x2.5, x3, x3.5, x4, x4.5, x5, x5.5, x6 and higher. Switching Voltage Regulator l On-board switching mode DC-DC Step Down Regulator. ® l Conforms to Intel VRM ver 8.1 specifications. l Over-Voltage and Over-Current protection. Chip Set ® l Intel 82440LX PCI Chipset. Clock Generator l 66.6MHz clocks are supported. Main Memory l Supp
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CHAPTER 1 INTRODUCTION On-Board IDE ® l An IDE controller on the Intel 82371AB PCI Chipset provides IDE HDD/ CD-ROM with PIO, Bus Master and Ultra DMA/33 operation modes. l Can connect up to four IDE devices. On-Board Peripherals l On-Board Peripherals include: - 1 floppy port supports 2 FDD with 360K, 720K, 1.2M, 1.44M and 2.88Mbytes. - 2 serial ports (COMA + COMB) - 1 parallel port supports SPP/EPP/ECP mode - 2 USB ports - 1 IrDA connector for SIR. BIOS l The mainboard BIOS provides “Plug &
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CHAPTER 1 INTRODUCTION Dimension l ATX Form Factor: 30cm(L) x 23cm(W) x 4 layers PCB. ® l Double deck I/O connectors, compatible with Intel Venus Mainboard. Mounting l 9 mounting holes. 1-4
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IDE1 IDE2 FDC BIOS DIMM 1 DIMM 2 DIMM 3 ATX Power Supply SLOT 1 KBC CHAPTER 1 INTRODUCTION 1.2 Mainboard Layout PSFAN1 LM78 (optional) Top: mouse Bottom: keyboard CFAN1 USB LM75 Top: Port 1 (optional) Bottom: Port 2 Top: LPT Bottom: COM A COM B JSW1 FW82443LX 1 IR1 JFAN Chassis AGP Intrusion J3 J4 Sensor (optional) Clock Generator PCI SLOT 1 J10 J9 BATT JFP1 PCI SLOT 2 + SW1 FW82371AB PCI SLOT 3 JSW2 JBAT1 JGL1 ISA SLOT JLG1 ISA SLOT ISA SLOT JMODE1 SFAN1 ISA SLOT MS-6112 1-5
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CHAPTER 2 HARDWARE INSTALLATION Chapter 2 HARDWARE INSTALLATION 2.1 Central Processing Unit: CPU ® ® The mainboard operates with Intel Pentium II processor. The mainboard uses a CPU Slot called Slot 1 for easy CPU installation and a DIP switch (SW1) to set the proper speed for the CPU. The CPU should always have a Heat Sink and a cooling fan attached to prevent overheating. 2-1
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CHAPTER 2 HARDWARE INSTALLATION 2.1-1 CPU Installation Procedures ® There are two kinds of Pentium II processor that is currently used: the ® ® OEM Pentium II processor and the Boxed Pentium II processor. OEM ® Pentium II processor has no Heat Sink, Fan and Heat Sink Support, while ® the Boxed Pentium II processor is provided with Heat Sink w/ fan and Heat Sink Support. ® A. OEM Pentium II processor Installation Procedures Processor Lock Heat Sink W/Fan ® Pentium II Notch Hole Processor Ret
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CHAPTER 2 HARDWARE INSTALLATION *Heat Sink Support Pin (HSSPIN) - Plastic pins inserted through the HSSBASE to secure it to the mainboard (2 required per Assembly). *Heat Sink Support Top Bar (HSSTOP) - Plastic bar that clips onto the HSSBASE through the fins on the ATX heatsink. ® **Heat Sink w/ fan - Heat Sink that can be attached to the Pentium II processor with metal clip. Note: * Provided by MSI mainboard. ** Provided by Special request. HSSBASE RM HSSPIN RMAM HSSTOP 2-3
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CHAPTER 2 HARDWARE INSTALLATION Step 1: Insert the Retention Mechanism Attach Mount at the bottom of the mainboard. Step 2: Install the Retention Mechanism. Look for the key on Slot 1, and match it with the Notch Key on the Retention Mechanism for proper direction. Then, attach the Retention Mechanism to the Retention Mechanism Attach Mount. Use a Screwdriver to secure the Retention Mechanism. Retention Mechanism ê ê Notch Key Key SLOT1 Retention Mechanism Attach Mount 2-4 ê ê
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CHAPTER 2 HARDWARE INSTALLATION Step 3: Install the Heat Sink Support Base. Look for the Two holes across Slot 1, and match it with the Two legs of the Heat Sink Support Base for the proper direction. Take note that one hole/leg is bigger than the other. The Four top pins of the Heat Sink Support Base should also be oriented towards Slot 1. Heat Sink pins Support Pin Leg Heat Sink Support Base Push the Heat Sink Support Base onto the mainboard, until you hear a click sound. Check for a perfec
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CHAPTER 2 HARDWARE INSTALLATION Step 5: Install the Heat Sink with Fan to the Processor. Push down the metal clips, so that they are in line with the back of the Heat Sink. Be careful, so as not detach the metal clips from the Heat Sink. Heat Sink w/ Fan The arrow â should be pointing Heat Sink down. Base Holder Metal Clips In case the metal clips are detached from the Heat Sink, re-attach them. Look for the arrow on the metal clip. This arrow should be pointing down and aligned with the Hea
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CHAPTER 2 HARDWARE INSTALLATION Step 6: Install the Processor. Unlock the Processor by pushing in the Processor Locks. è ç Insert the Processor like inserting a PCI or an ISA card. Step 7: Lock the Processor Locks. Secure the CPU by pulling the Processor Locks out. è ç 2-7
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CHAPTER 2 HARDWARE INSTALLATION Step 8: Install the Heat Sink Support Top Bar. Push the Heat Sink Support Top Bar to the Heat Sink Support Base, Until you hear a “click” sound. Check for a perfect fit. Heatsink Support Top Bar The installation is now complete. 2-8
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CHAPTER 2 HARDWARE INSTALLATION ® B. Boxed Pentium II processor Installation Procedures ® The Boxed Pentium II processor has a built- in Fan and Heat Sink. It also has a Heat Sink Support. So if you’re going to use the Boxed processor, all you need is the Retention Mechanism. Step 1: Insert the Retention Mechanism Attach Mount at the bottom of the mainboard. Step 2: Install the Retention Mechanism. Look for the key on Slot 1, and match it with the Notch Key on the Retention Mechanism for pr
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CHAPTER 2 HARDWARE INSTALLATION Step 3: Install the Heat Sink Support Base. Look for the 2 holes across Slot 1, and match it with the 2 Heat Sink Support Base. Take note that one hole/base is bigger than the other. Retention Mechanism Notch Hole PC-3742 Heat Sink Support Base Push the Heat Sink Support Base onto the mainboard, until you hear a click sound. Check for a perfect fit. 2-10
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CHAPTER 2 HARDWARE INSTALLATION Step 4: Install the Heat Sink Support. Attach the 2 Heat Sink Supports to the sides of the Processor. These Heat Sink Supports will fit in any direction, so be sure that the Heat Sink Support Locks are oriented outwards for the proper direction. ® Intel Boxed TM Pentium II Processor Heat Sink Support PC-3743 Heat Sink Support Lock 2-11
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CHAPTER 2 HARDWARE INSTALLATION Step 5: Unlock the Processor Locks and Heat Sink Support Locks. Push in the Processor Locks. Open the Heat Sink Support Locks. Processor Lock Heatsink Support Lock PC-3744 Step 6: Insert the Processor like inserting a PCI or an ISA card. 2-12
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CHAPTER 2 HARDWARE INSTALLATION PC-3745 Step 7: Lock the Processor Locks and Heat Sink Support Locks Secure the CPU by pushing out the Processor Locks. Close the Heat Sink Support Locks. The installation is now complete. 2-13
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CHAPTER 2 HARDWARE INSTALLATION 2.1-2 CPU Speed Setting: SW1 To adjust the speed of the CPU, you must know the spec. of your CPU (always ask the vendor for CPU spec.). Then look at Table 2.1 (200 ~ ® ® 333MHz Intel Pentium II processor) for setting. OFF SW1 ON Speed Setting CPU SW1 Type OFF 200MHz ON OFF 233MHz ON OFF 266MHz ON OFF 300MHz ON OFF 333MHz ON ® ® Table 2.1 200 ~ 333MHz Intel Pentium II processor 2-14 ON DIP 1 2 3 4 ON DIP 1 2 3 4 DIP ON 1 2
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CHAPTER 2 HARDWARE INSTALLATION 2.1-3 CPU Clock Generator Setting: J10/J9 These jumper is used to set the CPU Clock. J10 J9 CPU Clock J10 J9 66 MHz 68 MHz 75 MHz Note: 68/75 MHz CPU clock are both reserved function. 2-15
