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Octek Hippo-SX Manual

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H I P P O - S X

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Summary of Contents for Octek Hippo-SX

  • Page 1 H I P P O - S X...
  • Page 2 The material in this manual is for information only and is subject to change without notice. REVISION: 1.0 IBM, IBM PC/XT/AT, PC-DOS, MS-DOS, OS/2, INTEL, AMI ARE THE TRADEMARKS OR REGISTERED TRADEMARKS OF THEIR RESPECTIVE OWNERS.
  • Page 3 RADIO FREQUENCY INTERFERENCE STATEMENT This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause interference with radio and television reception. If this equipment does cause interference to radio or TV reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following...
  • Page 4 Note Electronic components are sensitive to dust and dirt. Do inspect and clean the computer system regularly. Turn off the power whenever you install or remove any connector, memory module and add-on card. Before turning on the power, make sure that all the connectors, memory modules and add-on cards are secured.
  • Page 5 Preface This manual provides information about the installation and maintenance of OCTEK Hippo-SX motherboard. In-depth explanations of the functions of this motherboard are provided. The content in this manual is only for reference and is intended to provide the basic information for the general users.

  • Page 6: Table Of Contents

    Table of Content Chapter 1 INTRODUCTION Chapter 2 GENERAL FEATURES Specification Processor Secondary Cache Memory Memory System Dual Bus Design Chapter 3 CONFIGURING THE SYSTEM Installing Math Coprocessor Installing RAM Modules Configuration of Memory DRAM Configuration Control of System Speed Reset CMOS Setup Information System Board Jumper Setting System Board Connectors...
  • Page 7 Chapter 4 TECHNICAL INFORMATION Memory Mapping I/O Address Map System Timers System Interrupts Direct Memory Access (DMA) Real Time Clock and CMOS RAM CMOS RAM Address Map 4-10 Real Time Clock Information 4-11 System Expansion Bus Appendix A MEMORY EXPANSION CARD Appendix B HIPPO CACHE CARD Appendix C...
  • Page 8 Appendix D TROUBLESHOOTING Main Memory Error Cache Memory Failure Improper Setting of Wait State Appendix E SYSTEM BOARD LAYOUT Appendix F MEMORY EXPANSION CARD LAYOUT Appendix G HIPPO CACHE CARD LAYOUT...
  • Page 9 Chapter 1 Introduction _______________________________ OCTEK Hippo-SX provides excellent computing performance at low cost. The heart of Hippo-SX is the 80486SX which combines CPU and internal cache memory on a single chip. Incorporated with a highly integrated chipset, OCTEK Hippo-SX fully takes advantage of the power of 80486SX and provides high performance, reliability and compatibility to the user.
  • Page 10 Compatibility and reliability are important issues. I/O channel is compatible to standard AT bus. Therefore any peripheral may be used on OCTEK Hippo-SX. board POWERGOOD generator is essential to ensure the reliability of the system and is well-designed to work with...

  • Page 11: Chapter 2 General Features

    Chapter 2 General Features _______________________________ SPECIFICATION Processor : Intel 80486SX CPU with optional WEITEK 4167 Co-processor Speed : Turbo/normal speed I/O Slot : Compatible to standard AT bus Eight 16-bit slots Optional Secondary Cache Memory : 128KB Direct mapped/Write through Memory : Shadow RAM and Memory remapping Page/Interleaved mode...
  • Page 12 GENERAL FEATURES __________________________________ System support functions : 8-Channel DMA (Direct Memory Access) 16-level interrupt 3 programmable timers CMOS RAM for system configuration Real time clock with battery back-up Fast A20 gate and fast reset Other Features : On board POWERGOOD generation External battery connector...

  • Page 13: Processor

    80486SX is a 32-bit microprocessor with 32-bit external data bus and 32-bit external address bus. It is fully binary compatible with existing Intel's CPU. All existing software for PC XT/AT can be used on OCTEK Hippo-SX. Cache memory improve overall performance of a computer system.
  • Page 14 GENERAL FEATURES __________________________________ If a read miss occurs, the CPU will initiate a burst mode read operation. In burst mode read operation, CPU performs four successive read operations each of which takes only one cycle. Total 128 bits data are fetched into the CPU's internal cache.
  • Page 15 GENERAL FEATURES __________________________________ applications using EMS memory can run efficiently although they only use software drivers to emulate EMS memory. Internal memory management unit provides a flexible addressing scheme for the next generation operation system. Multitasking, concurrent operation and manipulating huge data base can be accomplished with excellent performance.

  • Page 16: Secondary Cache Memory

    GENERAL FEATURES __________________________________ SECONDARY CACHE MEMORY Although there is 8K bytes internal cache memory inside the CPU, a secondary cache memory is still necessary when the size of main memory is large. In a single user system, when only DOS is used and few megabytes memory is installed, the internal cache memory is adequate and the performance is still very high.
  • Page 17 So, an optimal size is 128K or 512K bytes and this size is adequate for over 8M bytes main memory. In Hippo-SX, the secondary cache controller is incorporated in the chipset. There is no need to install an external cache controller.

  • Page 18: Memory System

    GENERAL FEATURES __________________________________ MEMORY SYSTEM Four banks of DRAMs can be installed. Two banks are available on motherboard and others are on optional memory expansion board. The maximum memory size is 32MB when using 4MB DRAM. The memory system provides a flexible memory configuration.
  • Page 19 GENERAL FEATURES __________________________________ thus is available to software. 1.256M 256KB 256KB 640K 640K before remapping after remapping ┌─────────┐ │▒▒▒▒▒▒▒▒▒│ ┌─────────┐ ├─────────┤ ├─────────┤ │ │ │▒▒▒▒▒▒▒▒▒│ │ │ ├─────────┤ ├─────────┤ │ │ │ │ │ │ │ │ │ │ │ │...

  • Page 20: Dual Bus Design

    8MHz or slower. On the other hand, the rest of the system are running at full speed. In Hippo-SX, a dual bus design is employed. high speed bus links the CPU, coprocessor, cache memory and main memory. This bus is synchronous with clock of the CPU and the data transfer is 32 bits.
  • Page 21 GENERAL FEATURES __________________________________ │ ││ │ │ ││ │ └──────┘└──────┘...

  • Page 22: Chapter 3 Configuring The System

    Chapter 3 Configuring The System _______________________________ Important Note : Turn off the power before installing or replacing any component. INSTALLING MATH COPROCESSOR Math coprocessor WEITEK 4167 is a PGA devices. Beside the CPU, there is a 144-pin PGA socket. To install Math Coprocessor, be sure to line up pin 1 of the Math coprocessor with pin 1 of the socket as shown below.
  • Page 23 CONFIGURING THE SYSTEM __________________________________ Before installing the Math coprocessor, make sure that all the pins are straight. The pins are very fragile. Once these pins are bent, the coprocessor may be damaged. The Math coprocessor is automatically detected by the system and the applications. No jumper is needed to be set.

  • Page 24: Installing Ram Modules

    CONFIGURING THE SYSTEM __________________________________ INSTALLING RAM MODULES OCTEK Hippo-SX has eight sockets for SIMM modules. Whenever memory motherboard, install four modules at the same time. Also make sure that the chips on the modules face towards CPU. The modules should be locked by the sockets.
  • Page 25 CONFIGURING THE SYSTEM __________________________________ To install a module, the module edge is angled into the socket's contact and then the module is pivoted into position, where the locking latches will secure it. If the module edge is not completely inserted into the socket, it cannot be pivoted to be in vertical position and should be dragged out and re-inserted again.

  • Page 26: Configuration Of Memory

    CONFIGURING THE SYSTEM __________________________________ CONFIGURATION OF MEMORY The configuration of the memory is very flexible. There are several combinations of DRAM types you may consider. Either 256KB or 1MB SIMM are acceptable. There are totally four banks of DRAM. Two banks (bank 0 and 1) are on the motherboard and the others (bank 2 and 3) are on the memory expansion board.
  • Page 27 CONFIGURING THE SYSTEM __________________________________ Because shadow memory remapping feature, the memory size may not equal to the actual memory size. For example, there is 1MB on board. If memory remapping is disabled, the BIOS will show 640KB. After enabled, the memory size is increased to 896KB.

  • Page 28: Dram Configuration

    CONFIGURING THE SYSTEM __________________________________ DRAM CONFIGURATION Bank Bank Bank Bank Total Inter- Memory leaved 256K 256K 256K 256K 256K 256K 0 256K 256K 256K 256K 256K 256K 256K 256K 256K 256K 0 256K 256K 0 256K 256K 256K 256K 256K 256K 256K 256K 256K 256K...
  • Page 29 CONFIGURING THE SYSTEM __________________________________ 256K 256K...

  • Page 30: Control Of System Speed

    CONFIGURING THE SYSTEM __________________________________ CONTROL OF SYSTEM SPEED System speed can be controlled by keyboard. To change the speed by keyboard, use `-' and `+' of the numeric keypad. Press `Ctrl' `Alt' and `-' for slow speed and press `Ctrl' `Alt' and `+' for fast speed. RESET CMOS SETUP INFORMATION Sometimes, the improper setting of system setup may make the system malfunction.

  • Page 31: System Board Jumper Setting

    CONFIGURING THE SYSTEM __________________________________ SYSTEM BOARD JUMPER SETTING There are several options which allows user to select by hardware switches. JP3 and JP4 are reserved. Display Selection CGA, EGA, VGA Monochrome display * Secondary Cache Installation Secondary Cache JP5 & JP6 Installed Not installed ON *...

  • Page 32: System Board Connectors

    CONFIGURING THE SYSTEM __________________________________ SYSTEM BOARD CONNECTORS Under typical conditions, these connectors should be connected to the indicators and switches of the system unit. The functions of connectors on the version 2.0 motherboard are listed below. Connector Function Hardware reset connector Speaker connector Power LED &...
  • Page 33 CONFIGURING THE SYSTEM __________________________________ J 1 - External Battery Connector Assignment + Vdc not used Ground Ground J 2 - Keyboard Connector Assignment Keyboard clock Keyboard data Spare Ground +5 Vdc J 26 - Speaker Connector Assignment Data out +5 Vdc Ground +5 Vdc...
  • Page 34 CONFIGURING THE SYSTEM __________________________________...
  • Page 35 CONFIGURING THE SYSTEM __________________________________ J 27 - Power LED & Ext-Lock Connector Assignment +5 Vdc Ground Keyboard inhibit Ground J 11, J 12 - Power Supply Connector Assignment POWERGOOD +5 Vdc +12 Vdc -12 Vdc Ground Ground Assignment Ground Ground -5 Vdc +5 Vdc +5 Vdc...
  • Page 36 CONFIGURING THE SYSTEM __________________________________ +5 Vdc...

  • Page 37: Chapter 4 Technical Information

    Chapter 4 Technical Information _______________________________ This section provides technical information about OCTEK Hippo-SX and is intended for advanced users interested basic design operation OCTEK Hippo-SX. MEMORY MAPPING Address Range Function 000000- 000K-512K System Board Memory 7FFFFF (512K) 080000- 512K-640K System Board Memory...

  • Page 38: I/O Address Map

    TECHNICAL INFORMATION __________________________________ I/O ADDRESS MAP I/O Address Map on System Board I/O address hex 000 to 0FF are reserved for the system board I/O. ADDRESS DEVICE (HEX) 000-01F DMA Controller 1, 8237 020-03F Interrupt Controller 1, 8259, Master 040-05F Timer, 8254 060-06F Keyboard Controller...
  • Page 39 TECHNICAL INFORMATION __________________________________ I/O address hex 100 to 3FF are available on the I/O channel. ADDRESS DEVICE (HEX) 1F0-1F8 Fixed Disk 200-207 Game I/O 278-27F Parallel Printer Port 2 2F8-2FF Serial Port 2 300-31F Prototype Card 360-36F Reserved 378-37F Parallel Printer Port 1 380-38F SDLC, bisynchronous 2 3A0-3AF...

  • Page 40: System Timers

    TECHNICAL INFORMATION __________________________________ SYSTEM TIMERS OCTEK Hippo-SX three programmable timer/counters controlled by 82C206 and they are defined as channels 0 through 2: Channel 0 System Timer Gate 0 Tied on Clk in 0 1.190 Mhz OSC Clk out 0 8259 IRQ 0...
  • Page 41 TECHNICAL INFORMATION __________________________________ Channel 2 Tone Generation of Speaker Gate 2 Controlled by bit 0 of port hex 61 PPI bit Clk in 2 1.190 Mhz OSC Clk out 2 Used to drive the speaker Note : Channel 1 is programmed to generate a 15-micro-second period signal.

  • Page 42: System Interrupts

    TECHNICAL INFORMATION __________________________________ SYSTEM INTERRUPTS Sixteen levels of system interrupts are provided on OCTEK Hippo-SX. The following shows the interrupt- level assignments in decreasing priority. Level Function Microprocessor NMI Parity or I/O Channel Check Interrupt Controllers CTLR 1 CTLR 2 IRQ0...
  • Page 43 TECHNICAL INFORMATION __________________________________ │ │ ╞══════════════════════════════════════╡ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ─┐ │ │ │ ┌─ │ │ │ │ │ │ │ │ │ │ │ │ │ │ └─┤...

  • Page 44: Direct Memory Access (Dma)

    TECHNICAL INFORMATION __________________________________ DIRECT MEMORY ACCESS (DMA) OCTEK Hippo-SX supports seven DMA channels. Channel Function Spare (8 bit transfer) SDLC (8 bit transfer) Floppy Disk (8 bit transfer) Spare (8 bit transfer) Cascade for DMA Controller 1 Spare (16 bit transfer)
  • Page 45 TECHNICAL INFORMATION __________________________________ The following shows the addresses for the page register. Page Register I/O Address (HEX) DMA Channel 0 0087 DMA Channel 1 0083 DMA Channel 2 0081 DMA Channel 3 0082 DMA Channel 5 008B DMA Channel 6 0089 DMA Channel 7 008A...

  • Page 46: Real Time Clock And Cmos Ram

    TECHNICAL INFORMATION __________________________________ REAL TIME CLOCK AND CMOS RAM Real time clock and CMOS RAM are contained on board. Real time clock provides the system date and time. CMOS RAM stores system information. Both are backed up by battery and will not lose information after power off.

  • Page 47: Cmos Ram Address Map

    TECHNICAL INFORMATION __________________________________ CMOS RAM ADDRESS MAP Addresses Description 00-0D * Real-time clock information * Diagnostic status byte * Shutdown status byte Diskette drive type byte - drives A and B Reserved Fixed disk type byte - drives C and D Reserved Equipment byte Low base memory byte...

  • Page 48: Real Time Clock Information

    TECHNICAL INFORMATION __________________________________ REAL TIME CLOCK INFORMATION The following table describes real-time clock bytes and specifies their addresses. Byte Function Address Seconds Second alarm Minutes Minute alarm Hours Hour alarm Day of week Date of month Month Year Status Register A Status Register B Status Register C Status Register D...

  • Page 49: System Expansion Bus

    TECHNICAL INFORMATION __________________________________ SYSTEM EXPANSION BUS OCTEK Hippo-SX provides eight 16-bit slots. The I/O channel supports: I/O address space from hex 100 to hex 3FF Selection of data access (either 8 or 16 bit) 24 bit memory addresses (16MB) Interrupts DMA channels...
  • Page 50 TECHNICAL INFORMATION __________________________________ The following figure shows the pin numbering for I/O channel connectors (side A and B).
  • Page 51 TECHNICAL INFORMATION __________________________________ The following figure shows the pin numbering for I/O channel connectors (side C and D).
  • Page 52 TECHNICAL INFORMATION __________________________________ The following tables summarize pin assignments for the I/O channel connectors. I/O Channel (A-Side) I/O Pin Signal Name -I/O CH CK -I/O CH RDY SA19 SA18 SA17 SA16 SA15 SA14 SA13 SA12 SA11 SA10...
  • Page 53 TECHNICAL INFORMATION __________________________________...
  • Page 54 TECHNICAL INFORMATION __________________________________ I/O Channel (B-Side) I/O Pin Signal Name Ground RESET DRV +5 Vdc Power IRQ9 -5 Vdc Power DRQ2 -12 Vdc Power +12 Vdc Power Ground -SMEMW -SMEMR -IOW -IOR -DACK3 DRQ3 -DACK1 DRQ1 -Refresh IRQ7 IRQ6 IRQ5 IRQ4 IRQ3...
  • Page 55 TECHNICAL INFORMATION __________________________________ -DACK2 BALE +5 Vdc Power Ground...
  • Page 56 TECHNICAL INFORMATION __________________________________ I/O Channel (C-Side) I/O Pin Signal Name SBHE LA23 LA22 LA21 LA20 LA19 LA18 LA17 -MEMR -MEMW SD10 SD11 SD12 SD13 SD14 SD15...
  • Page 57 TECHNICAL INFORMATION __________________________________ I/O Channel (D-Side) I/O Pin Signal Name -MEM CS16 -I/O CS16 IRQ10 IRQ11 IRQ12 IRQ15 IRQ14 -DACK0 DRQ0 -DACK5 DRQ5 -DACK6 DRQ6 -DACK7 DRQ7 +5 Vdc Power -MASTER Ground...

  • Page 58: Appendix Amemory Expansion Card

    Appendix A Memory Expansion Card _______________________________ Memory expansion card contains bank 2 and bank 3 of memory. There are 8 SIMM modules on the card and total memory on this card is 8MB. Please refer to Chapter 3 for the configuration of the memory. After installing the memory card, the system BIOS will determine the type of DRAM and the amount of total memory.
  • Page 59 THIS PAGE IS INTENTIONALLY LEFT BLANK...

  • Page 60: Appendix Bhippo Cache Card

    Appendix B Hippo Cache Card _______________________________ There are 128K bytes cache memory on the Hippo cache card. The expansion slot beside the CPU is dedicated to this card. To setup the cache controller, follow the steps described below. Turn off the power and plug in the card; Turn on the power and enter CMOS SETUP;...
  • Page 61 THIS PAGE IS INTENTIONALLY LEFT BLANK...

  • Page 62: Operation And Maintenance

    Appendix C Operation and Maintenance _______________________________ STATIC ELECTRICITY When installing or removing any add-on card, DRAM module or coprocessor, you should discharge the static electricity on your body. Static electricity is dangerous to electronic device and can build-up on your body.

  • Page 63: Cleaning The `Golden Finger

    CLEANING THE "GOLDEN FINGER" Whenever inserting an add-on card to the motherboard, make sure that there is no dirt on the "golden finger" of the add-on card. If not, the contact between the "golden finger" and the slot may be poor and thus the add-on card may not work properly.
  • Page 64 Appendix D Troubleshooting _______________________________ MAIN MEMORY ERROR After power up, the monitor remains blank, and there are beep sounds indicating a main memory failure. In this case, turn off the power and remove all SIMM modules. Carefully place the modules back to the sockets and make sure that all the modules are locked by the locking latches firmly.
  • Page 65 IMPROPER SETTING OF WAIT STATE If the system hangs after memory test, another possible cause is the improper setting of the wait state for memory operation. The number of wait state must match the speed of the DRAM. Reset the CMOS RAM and set up the wait state.
  • Page 66 Appendix E System Board Layout _______________________________...
  • Page 67 Appendix F Memory Expansion Card Layout _______________________________...
  • Page 68 Appendix G Hippo Cache Card Layout _______________________________...

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