Technical Reference SB-6862 Dual Pentium Pro Single Board Computer with Natoma Chipset ® 1641 McGaw Avenue Irvine, California 92614 SB-6862 i
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Features Intel Pentium® Pro processor, upgradeable through 180 or 200 MHz; and dual Pentium® Pro upgrade Intel Natoma chipset Basic connectors provided for speakers, hard disk LED, reset/turbo LED, keylock, PS/2 mouse and CMOS battery System memory upgradeable to 1 GB using x 64 or x 72 dual inline memory modules (DIMM) Processor facilitated error correcting memory (ECC) using x 72 DIMM Processor-based cache: 256 KB or 512 KB on-board On-board E-IDE controller with seperate
FCC Standards The FCC (Federal Communications Commission) restricts the amount of radiation and radio frequency emissions coming from computing equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
To ensure compliance to FCC non-interference regulations, peripherals attached to this device require shielded I/O cables. NOTICE: The use of a non-shielded I/O cable with this device is in violation of U.S. Federal law and will not allow the device to meet the maximum emission limits. CAUTION: Any changes or modifications not expressly approved by the grantee of this device could void the users authority to operate the equipment.
WARNING CAUTION: THERE IS A DANGER OF EXPLOSION IF THE BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISCARD USED BATTERIES ACCORDING TO THE MANUFACTURERS INSTRUCTIONS. ATTENTION:IL Y A DANGER DEXPLOSION SIL Y A REMPLACEMENT INCORRECT DE LA BATTERRIE. REMPLACER UNIQUEMENT AVEC UNE BATTERI DU MEME TYPE OU DUN TYPE RECOMMENDE PAR LE CONSTRUCTEUR. ETTERAU REBUT LES BATTERRIES USAGEES CONFORMEMANT AUX INSTRUCTIONS DU FABRICATANT.
NOTICE The information within this manual is subject to change without notice. CSS Laboratories, Incorporated shall not be held liable for technical or editorial errors or omissions contained in herein; nor for incidental or consequential damages resulting from the furnishing, performance or use of this material. All rights reserved.
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Table of Contents Overview ............................................................................... 1 The Microprocessor .............................................................. 2 The Board ............................................................................. 3 Voltage Regulator..................................................... 4 Board Connectors ................................................................. 5 Keyboard Connector K1 .........................................
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Overview This document describes the technical features of the board.
The Microprocessor The Pentium Pro microprocessor contains all the features of the Pentium and 80486 processors, and is 100% compatible with 8086/88, 80286, and 80386 DX and SX microprocessors.
DIMM J99 J100 J47 1 1 1 1 U60 U59 U58 U57 JP27 1 1 1 JP43 1 JP46 JP47 VRM P r oc e s so r VRM Pr D o ce ual s so r 1 1 1 1 JP15 J3 1 JP16 1 JP4 1 JP3 1 JP18 1 JP 42 SB-6862 JP45 JP29 JP30 JP31 JP32 JP 26 VOLTAGE REGULATORS J4 1 JP1 1 1 1 1 1 JP2 J70 J69 J8 J11 1 J12 1 1 JP6 JP7 1 J68 1 1 J97 1 SERIAL 2 JP24 1 J6 7 FLASH 1 DB1 PARALLEL J98 SERIAL 1 K1 KEYBOARD FLOPPY IDE-PRI IDE-SEC The Board DIMM 1 DIMM 2 DIMM 3 DIMM 4 Figure 1: The Board 3
Voltage Regulator Module A voltage regulator module installed on the board ensures that the correct voltage is provided to the particular processor installed. When up grading to the faster grade of Pentium processor, make sure to have the appropriate voltage regulator installed.
Board Connectors Connector Description K1 J3, J4 J8 J11 J12 J98 J97 DB1 JP18, JP45 Keyboard Universal Serial Bus (USB) Floppy drive Primary IDE Secondary IDE Serial 1 Serial 2 Parallel 12 volt CPU fans Keyboard Connector K1 Keyboard plugs are keyed for proper installation. Pin 1 2 3 Assignment Clock Data Not used Pin Assignment 4 Ground 5 +5 Vdc Primary IDE Drive Header J11 J11 is the connector for the primary on-board PCI IDE drive controller. Pin 1 is marked.
Secondary IDE Drive Header J12 J10 is the connector for the secondary on-board PCI IDE hard drive controller. Pin 1 is marked. Use this to cable your IDE hard drive. When connecting your hard drive, orient the ribbons pin one with pin 1 of J71. Parallel Port DB1 DB1 provides the connection for the boards parallel port. Serial Port 1 Connector J98 J98 provides the connection for serial port 1 (COM 1). Serial Port 2 Connector J97 J97 provides the connection for the boards serial port 2 (COM 2).
Fan Connectors JP18, JP45 These fans provide cooling for the powerful Pentium Pro processors. JP45 connects to the primary processors fan. JP18 connects to the dual processor fan.
Jumpers The boards jumpers are pre-configured at the factory. Read the following section carefully, before configuring your system. The board has the following jumpers: Jumper Description JP4 Processor bus clock speed JP26, JP27 JP32, JP31 JP30, JP29 JP69, JP24 JP1, JP2, J70 J47, JP47, JP46 Processor bus frequency Processor speed ratio Test pins (jumper closed) Test pins (jumper open) Processor Bus Clock Speed JP4, JP3 Pentium Pro processors are designed with one of two bus clock speeds.
Processor Bus Frequency JP26, JP27 JP26 and JP27 synchronize the processor bus frequency with the processors speed. Processor Bus Frequency JP26 JP27 60 MHz IN OUT 66 MHz OUT IN Processor Speed Ratio JP32, JP31, JP30, JP29 The Pentium Pro uses a clock multiplier to run at a speed faster than the processor bus. These jumpers match the installed processors speed with single board computers defined processor speed. When upgrading processors, you may need to adjust these jumpers.
The following table matches processor speed, processor clock and the boards processor bus speed: 10 Processor Type/Speed 180 MHz Clock Ratio 3x Processor Bus Speed 60 MHz 200 MHz 3x 66 MHz SB-6862
System Memory There are a total of four banks available for memory upgrades. The board supports DIMM in the following combinations: 1M x 64/72 2M x 64/72 4M x 64/72 8M x 64/72 16M x 64/72 32M x 64/72 = 8 MB/bank = 16 MB/bank = 32 MB/bank = 64 MB/bank = 128 MB/bank = 256 MB/bank Installing and Removing DIMM Read these instructions completely before installing or removing DIMMs. The DIMM is held by plastic press-clips on both sides of the slot.
System Memory Configuration RAM 8 MB Bank 0 Bank 1 Bank 2 Bank 3 1M x 64/72 16 MB 1M x 64/72 16 MB 2M x 64/72 24 MB 1M x 64/72 1M x 64/72 24 MB 1M x 64/72 2M x 64/72 32 MB 1M x 64/72 1M x 64/72 32 MB 2M x 64/72 2M x 64/72 32 MB 4M x 64/72 32 MB 2M x 64/72 1M x 64/72 32 MB 2M x 64/72 2M x 64/72 40 MB 1M x 64/72 2M x 64/72 40 MB 1M x 64/72 4M x 64/72 40 MB 2M x 64/72 1M x 64/72 1M x 64/72 48 MB 4M x 64/72 1M x 64/72 1M x 64/72 48 MB 2M x 64/72 2M x 64/72 2M x 64/
RAM Bank 0 Bank 1 Bank 2 Bank 3 88 MB 8M x 64/72 1M x 64/72 1M x 64/72 1M x 64/72 96 MB 4M x 64/72 4M x 64/72 4M x 64/72 96 MB 4M x 64/72 8M x 64/72 104 MB 1M x 64/72 4M x 64/72 4M x 64/72 4M x 64/72 112 MB 2M x 64/72 4M x 64/72 4M x 64/72 4M x 64/72 128 MB 4M x 64/72 4M x 64/72 4M x 64/72 4M x 64/72 128 MB 8M x 64/72 8M x 64/72 128 MB 16M x 64/72 136 MB 16M x 64/72 1M x 64/72 136 MB 1M x 64/72 8M x 64/72 8M x 64/72 144 MB 2M x 64/72 16M x 64/72 144 MB 2M x 64/72 8M x
RAM Bank 0 Bank 1 Bank 2 Bank 3 272 MB 32M x 64/72 1M x 64/72 1M x 64/72 272 MB 32M x 64/72 2M x 64/72 272 MB 2M x 64/72 16M x 64/72 16M x 64/72 280 MB 32M x 64/72 1M x 64/72 1M x 64/72 288 MB 32M x 64/72 4M x 64/72 288 MB 32M x 64/72 2M x 64/72 2M x 64/72 288 MB 4M x 64/72 16M x 64/72 16M x 64/72 304 MB 32M x 64/72 2M x 64/72 2M x 64/72 320 MB 32M x 64/72 4M x 64/72 4M x 64/72 320 MB 16M x 64/72 8M x 64/72 8M x 64/72 8M x 64/72 320 MB 32M x 64/72 8M x 64/72 352 MB 32M x
System Memory Map Address (hex) Name Function 000000 to 9FFFFF 640 KB motherboard system memory 0A0000 to 0BFFFF 128 KB video display ROM reserved for graphics 0C0000 to 0DFFFF 128 KB I/O expansion ROM reserved for ROM on I/O 0E0000 to 0EFFFF 64 KB reserved on motherboard duplicate code assignment at FE0000 0F0000 to 0FFFFF 64 KB ROM on motherbord duplicate code assignment at FF0000 100000 to FDFFFF maximum memory is 15 MB I/O channel memory FE0000 to FEFFFF 64 KB reserved on motherboa
System Interrupts The processor has two controllers, supplying 16 IRQs. Below are assignments in decreasing priority.
Note: IRQ9, IRQ10, IRQ11, IRQ12, IRQ15, IRQ3, IRQ4, IRQ5 and IRQ7 can be redirected to PCI add-in boards. The PCI standard has a 4-IRQ limitation. Some PCI add-in boards do not require IRQs. Some can share an IRQ with another board of the same model and manufacture. Check the add-in boards docmentation for IRQ information.
The I/O Address Map Function 000-01F 020-03F 040-05F 060-06F 070-07F 080-09F 0A0-OBF 0C0-ODF 0F0-0F1 0F8-0FF 1F0-1F8 200-207 278-27F 2F8-2FF 300-31F 378-37F 380-38F 3A0-3AF 3B0-3BF 3D0-3DF 3F0-3F7 3F8-3FF DMA #1 INTR #1 Timer Keyboard NMI mask register DMA page register INTR #2 DMA #2 Clr/rst math coprocessor Math coprocessor Fixed disk Joystick Secondary parallel port Secondary serial port Prototype card Primary parallel port SDLC (secondary bisynchronous) Primary bisynchronous Monochrome display/printer
Configuration Utilities Overview The BIOS Setup utility stores your systems configuration. The utility described below provides a bridge to PCI slots in excess of the four allowed by current standards. When your system boots, its configuration is read into main memory. Hard drives, floppy drives, video adapter, memory and keyboard are described to the system. The BIOS is pre-configured at the factory. This document is an overview of the BIOS.
The most commonly accessed selections are Standard CMOS Setup, Advanced CMOS Setup, Advanced Chipset Setup, Power Management Setup PCI/Plug and Play Setup, and Peripheral Setup. Standard Setup This utility allows you to record your system setup. To start SETUP, Double-click on the Standard Setup icon on the Main Menu. Alter only the items that need to be changed or reset. If a selected option is correct, skip the corresponding step. AMI BIOS SETUP - STANDARD CMOS SETUP (c) 1996 American Megatrends, Inc.
Pri Slave Primary slave IDE/PCI hard drive. Define the parameters of your hard disk and modes. The default setting is Auto, to auto-detect drive type. Sec Master Secondary master IDE/PCI hard drive, if installed. Define the parameters of your hard disk and modes. The default setting is Not Installed. Sec Slave Secondary slave IDE/PCI hard drive, if installed. Define the parameters of your hard disk and modes. The default setting is Not Installed. Note: You may also manually enter the hard disk parameters.
Advanced Setup Advanced Setup allows you to fine tune some of the special features. These features are pre-set for you at the factory. Double-click the Advanced Setup icon on the Main Menu. Use the arrow keys to toggle between items. Available options for the highlighted item are displayed on the right side of the menu. Press or to toggle through available options. AMI BIOS SETUP - ADVANCED CMOS SETUP (c) 1996 American Megatrends, Inc.
Advanced Chipset Setup This option lets you configure some of the advanced features of your particular system through the chipset. It was preconfigured at the factory and need not be altered. Doubleclick on the Chipset Setup icon on the Main Menu. Use the arrow keys to toggle between items. Available options for the highlighted item are displayed on the right side of the menu. Press or to toggle through available options.
Power Management Setup This utility lets you set the green functionality parameters. AMI BIOS SETUP - POWER MANAGEMENT SETUP (c) 1996 American Megatrends, Inc.
PCI/PnP Setup This menu allows you to define attributes of the PCI bus portion of the motherboard. AMI BIOS SETUP - PLUG AND PLAY SETUP (c) 1996 American Megatrends, Inc.
Peripheral Setup This menu allows you to specify the peripherals installed on your motherboard. On-board IDE enables the on-board chipset E-IDE function. Use the arrow keys to toggle between items. Press to access the drop down selection menu. Use the arrow keys to toggle between options. Press to make a selection. AMI BIOS SETUP - PERIPHERALS SETUP (c) 1996 American Megatrends, Inc.
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