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Micronics Twister AT Pentium User Manual

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Twister AT Pentium
System Board Manual
Document Number: 06-00317-01, Rev. 1B
April 1997
45365 Northport Loop West, Fremont, CA 94538-6417

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Summary of Contents for Micronics Twister AT Pentium

  • Page 1 Twister AT Pentium System Board Manual Document Number: 06-00317-01, Rev. 1B April 1997 45365 Northport Loop West, Fremont, CA 94538-6417...
  • Page 2 Twister AT PCI/ISA Pentium Processor system board manual has been carefully checked and is believed to be accurate. Micronics assumes no responsibility for any inaccuracies that may be contained in this document. Micronics makes no commitments to update or to keep the information in this manual at a current level when changes are made to the product.

  • Page 3: Table Of Contents

    Introduction Features Software Compatibility Before You Begin Installing the Twister AT Static Electricity Office Environment Twister AT System Board Jumper Settings Introduction System Memory Support Installing the Twister AT Tools Required Equipment Required System Memory Adding Memory Memory Usage Memory Configurations Installing a CPU Installing the DIMMs Removing DIMMs...
  • Page 4 Installing a PCI Peripheral Card Installing an ISA Peripheral Card Configuration Initial Bootup Setup Running the Setup Procedure Standard CMOS Setup BIOS Features Setup Chipset Features Setup Power Management Setup PnP/PCI Configuration Setup Load BIOS Defaults Load Setup Defaults Integrated Peripherals Supervisor Password User Password IDE HDD Auto Detection...
  • Page 5 Limited Warranty Non Warranty Service FCC Statement...
  • Page 6 Figure 1.1: Power-Up Screen Figure 2.1: Twister AT System Board Figure 3.1: Installing a 168-Pin DIMM Figure 3.2: Installing a 72-Pin SIMM Figure 3.3: Installing a PCI Peripheral Card Figure 3.4: Installing an ISA Peripheral Card Figure 4.1: Power-Up Screen Figure 4.2: Main CMOS Setup Screen Figure 4.3: Standard CMOS Setup Screen Figure 4.4: BIOS Features Setup Screen...
  • Page 7 USB supports both standard devices that operate at the full 12Mbps rate and low-end devices that use only a 1.5Mbps subchannel. Micronics builds all products to exacting standards, using the highest quality components available. We are proud to provide this system board and believe you will be...

  • Page 8: Features

    The Twister AT includes the following features: Single ZIF socket 7 ® Intel Pentium 75-200MHZ ® ® Intel Pentium 166-233MHz Processors with MMX ® Intel Pentium Overdrive (P54CTB) ™ Cyrix 6x86 ™ ™ AMD-K5 and AMD-K6 Integrated Voltage Regulator Module Intel 430TX PCI chipset Intel PIIX 4 SMC FDC37C66x Ultra I/O chip...
  • Page 9 The Twister AT system board has been thoroughly tested for compatibility with a variety of operating systems and environments, including: Microsoft DOS 5.0 DOS 6.2 Windows 95 Windows NT 3.51 Windows NT 4.0 OS/2 Warp 3.0 OS/2 Warp 4.0 UNIXWare 2.1.1 Open Server 5.02 UNIX 3.2, 4.2 Novell NetWare 3.12...
  • Page 10 This manual will familiarize you with the features, installa- tion and use of your Twister AT. There are several symbols and conventions used throughout this manual to help draw your attention to a feature or to focus on important informa- tion: When you see the Magnifying Glass, it refers to something you should take a closer look at...

  • Page 11: Installing The Twister At

    Quick Installation We know that many experienced people prefer to read as little of the documentation as possible. If this sounds like you, here’s the short form to get up and running quickly. Installing the Twister AT 1. Make backup copies of your installation and configu- ration diskettes.

  • Page 12: Figure 1.1: Power-Up Screen

    Figure 1.1: Power-Up Screen 10. If necessary, use the arrow keys to move the highlight to STANDARD CMOS SETUP and press <Enter>. 11. Set the time and date. 12. If necessary, adjust the settings for the floppy drive(s) and hard drive(s) to match your configuration. If you are installing one or more IDE drives, the BIOS auto- matically configures your drive(s) for you when the setting in the Type column is Auto.
  • Page 13 15. Press <ESC> to return to the main setup menu. 16. Use the arrow keys to move the highlight to any of the other setup options in the main menu that contain settings you want to review or change (for information on the various setup options in the main menu, see Chapter 4).

  • Page 15: Static Electricity

    Although the Twister AT system board is packaged in materials that are designed to protect it from physical damage and static electricity, it is important to use care while unpacking the board and setting it up. The Twister AT is shipped from the factory in an anti- static bag.

  • Page 16: Twister At System Board

    Figure 2-1. Twister AT System Board Diagram...

  • Page 17: Jumper Settings

    This section provides the jumper settings for the Twister AT system board. Table 2-1 lists the system speed settings for the Intel Processors. CPU Speed (Intel) CPU External CPU Frequency Bus Speed Ratio JP6 JP7 JP8 JP60 JP4 JP5 75MHz (50 x 1.5) 2-3 2-3 2-3 1-2 1-2 90MHz (60 x 1.5)

  • Page 18: Table 2.3: System Speed Selection (Amd)

    Table 2-3 lists the system speed settings for the AMD Processors. CPU Speed (AMD) CPU External CPU Frequency Bus Speed Ratio JP6 JP7 JP8 JP60 JP4 JP5 AMD-K5-PR75 2-3 2-3 2-3 75MHz (50 x 1.5) AMD-K5-PR90 2-3 2-3 1-2 90MHz (60 x 1.5) AMD-K5-PR100 2-3 1-2 2-3 100MHz (66 x 1.5)

  • Page 19: Table 2.5: Power Supply Voltage Selection

    Table 2-5 lists the available processor supply voltages and the corresponding jumper settings that select them. CPU Type Jumper Settings JP16 JP17 JP18 JP15 JP13 JP12 JP11 JP14 Intel Close Close P54C/CS/CTB/ Cyrix 6x86 Intel P55C MMX/ Close Close Cyrix 6x86L AMD K5 Close Close...

  • Page 20: Table 2.7: Connector Settings And Functions

    Table 2-7 lists all of the connectors and their functions. Connector Function Notes USB Connector Port 0 USB Connector Port 1 Secondary IDE Port Can be disabled at the CMOS configuration screen Serial Port (COM 2) Can be disabled at the CMOS configuration screen Primary IDE Port Can be disabled at the CMOS...
  • Page 21 Chapter 1. Micronics recommends that only trained techni- cians install and configure the system board. Damage which occurs to the board while adding or removing peripherals or components may void the warranty.
  • Page 22 Baby AT form factor and may be installed into most cases. NOTE: If you are unfamiliar with installing a system board, Micronics highly recommends that you read the computer user’s manual or contact your dealer’s technical support department. Micronics recommends using the following tools to install...

  • Page 23: System Memory

    DIMMs and SIMMs. If you follow these rules, your upgrade should be trouble-free: Use 70ns or faster DIMMs and SIMMs. NOTE: For long term reliability, Micronics recommends using DIMMs with gold-plated contacts and SIMMs with tin-plated contacts. SIMM memory modules support FPM and EDO DRAM memory types.
  • Page 24 The following information lists sample configurations for utilizing both SIMM and DIMM memory modules: SIMM Configurations DIMM Configurations...
  • Page 25 SIMM and DIMM Configurations S = SIMM D = DIMM NOTE: DIMM socket 1 is a shared socket with SIMM sockets 3 and 4. A shared socket means that either SIMMs or DIMMs may occupy, but not together. Therefore, if you are using a DIMM in DIMM socket 1, you may not use SIMM sockets 3 and 4 at the same time.

  • Page 26: Memory Configurations

    The following tables list the most common memory con- figurations. The memory available depends on the num- ber of DIMMs and/or SIMMs installed. Memory SIMM 1 SIMM 2 SIMM 3 SIMM 4 DIMM 1 DIMM 2 Size 1Mx32 1Mx32 16MB 2Mx32 2Mx32 16MB...

  • Page 27: Table 3.2: Memory Configuration (Simms Only)

    Memory SIMM 1 SIMM 2 SIMM 3 SIMM 4 DIMM 1 DIMM 2 Size 24MB 1Mx32 1Mx32 1Mx32 1Mx32 32MB 1Mx32 1Mx32 1Mx32 1Mx32 48MB 1Mx32 1Mx32 1Mx32 1Mx32 48MB 2Mx32 2Mx32 2Mx32 2Mx32 64MB 2Mx32 2Mx32 2Mx32 2Mx32 80MB 1Mx32 1Mx32 1Mx32...

  • Page 28: Table 3.3: Memory Configuration (Dimms Only)

    Memory SIMM 1 SIMM 2 SIMM 3 SIMM 4 DIMM 1 DIMM 2 Size 1Mx64 16MB 2Mx64 16MB 1Mx64 1Mx64 24MB 1Mx64 2Mx64 32MB 4Mx64 32MB 2Mx64 2Mx64 40MB 1Mx64 4Mx64 48MB 2Mx64 4Mx64 64MB 8Mx64 64MB 4Mx64 4Mx64 72MB 1Mx64 8Mx64 80MB...
  • Page 29 Bank 0 Bank 1 Memory SIMM 1 SIMM 2 SIMM 3 SIMM 4 DIMM 1 DIMM 2 Size 1Mx64 2Mx64 4Mx64 1Mx32 1Mx32 8Mx64 16Mx32 16Mx32 1Mx64 1Mx64 in any 1Mx64 2Mx64 combination 1Mx64 4Mx64 1Mx64 8MBx64 2Mx64 2Mx64 2Mx64 4Mx64 2Mx64 8Mx64...
  • Page 30 The Twister AT is designed to support Intel Pentium, Cyrix and AMD processors. Follow the steps below to install a processor: 1. Turn off the computer and remove its cover. 2. Locate the CPU ZIF socket illustrated in Figure 2-1. 3.

  • Page 31: Figure 3.1: Installing A 168-Pin Dimm

    To install the DIMMs, locate the memory banks on the system board and perform the following steps: 1. Hold the DIMM so that the notched edge is aligned with the notch on the DIMM socket (Figure 3-2). NOTE: If notched edges do not match, you are probably using the incorrect type of DIMM (unbuf- fered).

  • Page 32: Figure 3.2: Installing A 72-Pin Simm

    To install the SIMMs, locate the memory banks on the system board and perform the following steps: 1. Hold the SIMM so that the notched edge is aligned with the notch on the SIMM socket (Figure 3-1). 2. Insert the SIMM at a 45 degree angle. 3.
  • Page 33 Micronics PCI slots accommodate all PCI peripherals that meet the PCI 2.1 specifications. Follow the steps below to install a PCI card: 1. Turn the computer system off and remove its cover. 2. Choose an unused PCI slot and remove the slot cover.

  • Page 34: Installing An Isa Peripheral Card

    Micronics ISA slots accommodate all standard ISA pe- ripherals. Follow the steps below to install a PCI card: 1. Turn the computer system off and remove its cover. 2. Choose an unused ISA slot and remove the slot cover. 3. Insert the card with the bottom edge level to the slot.

  • Page 35: Configuration

    After the Twister AT system board and all hardware is installed, the system is ready for configuration. Before turning on the computer, make sure all cables are cor- rectly connected and all jumpers are correctly set. We recommend that you keep the computer cover off the first time you boot the system.

  • Page 36: Figure 4.1: Power-Up Screen

    When the system is turned on, it performs a memory test, and a BIOS identification and system information screen is displayed on your monitor, as shown in Figure 4-1. Figure 4-1: Power-Up Screen When “To enter Setup before boot, press CTRL-ALT- ESC or DEL key”...

  • Page 37: Figure 4.2: Main Cmos Setup Screen

    Figure 4-2: Main CMOS Setup Screen The Twister AT system board has six primary CMOS configuration screens: main setup menu, Standard CMOS Setup, BIOS Features Setup, Chipset Features Setup, PNP/PCI Configuration and Integrated Peripherals screen. In addition, there are four screens containing options that do not have to be set unless you want to: the Power Management Setup screen, the Supervisor Password, the User Password and the IDE HDD Auto Detection screen.

  • Page 38: Standard Cmos Setup

    Standard CMOS Setup The STANDARD CMOS SETUP allows checking or modification of general configuration information. To access the STANDARD CMOS SETUP screen, high- light this option on the main menu screen and press <Enter>. Figure 4-3. Standard CMOS Setup Screen Date and Time To set the date, use <→/←↑/↓>...
  • Page 39 compensation time (PRECOMP), read/write head land- ing zone (LANDZ), number of sectors per track (SECTOR), and HDD mode (MODE). NOTE: We rec- ommend that you select type Auto for all drives. To configure a floppy drive added to or removed from your computer, use <→/←↑/↓>...

  • Page 40: Bios Features Setup

    BIOS Features Setup This feature allows you to set the Award enhanced BIOS options of your choice. To access the BIOS FEATURES SETUP screen, highlight this option on the main menu screen and press <Enter>. Figure 4-4: BIOS Features Setup Screen CPU Internal Cache This selection enables the internal CPU.
  • Page 41 Quick Power-On Self-Test When enabled, this selection will reduce the amount of time required to run the Power-On Self-Test (POST). A quick POST skips certain steps. We recommend that you disable quick POST. The default setting is Disabled. Boot Sequence selects the order in which the system searches for a boot disk.
  • Page 42 Alters the VGA palette setting while graphic signals pass through the feature connector of the VGA card and are processed by the MPEG card. Enable this option only if you have MPEG connections through the VGA feature connector; this means you can adjust PCI/VGA palettes. The default setting is Disabled.

  • Page 43: Chipset Features Setup

    Chipset Features Setup The Chipset Features Setup allows you to program the Intel 430TX PCI chipset features. To access the CHIPSET FEATURES SETUP screen, highlight this option on the main menu screen and press <Enter>. Figure 4-5: Chipset Features Setup Screen Auto Configuration selects predetermined optimal val- ues of the chipset parameters.
  • Page 44 WARNING: An incorrect setting could cause the system to lockup. You will need to clear the CMOS and run the Setup program again. Select the combination of CPU clocks the DRAM on your board requires before each memory read/write. Changing the value from the setting determined by the board manufacturer for the installed DRAM may cause memory errors.
  • Page 45 When DRAM is refreshed, both rows and columns are addressed separately. This selection allows you to deter- mine the timing of the transition from RAS to Column Address Strobe (CAS). The values in this field are preset based on the DRAM installed.
  • Page 46 The I/O recovery mechanism adds bus clock cycles be- tween PCI-originated I/O cycles to the ISA bus. This delay takes place because the PCI bus is so much faster than the ISA bus. These two fields let you add recovery time (in bus clock cycles) for 16-bit and 8-bit I/O.

  • Page 47: Power Management Setup

    The Power Management Setup option controls the power management functions of the system. To access the POWER MANAGEMENT SETUP screen, highlight this option on the main menu screen and press <En- ter>. Figure 4-6: Power Management Screen This selection allows you to select the type (or degree) of power saving for Sleep, Standby and Suspend modes.
  • Page 48 When enabled, power management is controlled by the Advanced Power Management (APM) feature, which gives better power savings. The default setting is YES. This selection defines the video off method in standby mode. The following table describes each option: SYNC+Blank System turns off vertical and horizontal synchronization ports and writes blanks to the video buffer.
  • Page 49 After the selected period of drive inactivity (1 to 15 minutes), the hard disk drive powers down while all other devices remain active. Select whether or not video activity restarts the global timer for Standby Mode. Sets the monitoring of IRQ8 (Real Time Clock) so that it does not awaken the system from Suspend Mode.

  • Page 50: Pnp/Pci Configuration Setup

    The PnP/PCI Configuration Setup option sets the vari- ous system functions and internal addresses of PnP and PCI devices and onboard PCI IDE controller. To access the PnP/PCI CONFIGURATION SETUP screen, high- light this option on the main menu screen and press <Enter>.
  • Page 51 devices. If you select Auto (default) all the interrupt request (IRQ) and DMA assignment fields disappear, as the BIOS automatically assigns them. Select Enabled to reset Extended System Configuration Data (ESCD) when you exit Setup. This selection allows the PnP BIOS to detect your PCI and ISA PnP devices and reallocate resources to them.

  • Page 52: Load Bios Defaults

    This selection loads the BIOS default values that would allow safe booting of the system in the event of a BIOS configuration memory loss. To select LOAD BIOS DEFAULTS, highlight this option on the main menu screen and press <Enter>. Press <Y> or <N> when the program prompts you with the Load BIOS Defaults question.

  • Page 53: Integrated Peripherals

    This option sets the addresses of I/O subsystems that depend on the integrated peripherals controller in your system. To access the INTEGRATED PERIPHERALS screen, highlight this option on the main menu screen and press <Enter>. Figure 4-8: Integrated Peripherals Configuration Screen Block mode is also called block transfer, multiple com- mands, or multiple sector read/write.
  • Page 54 devices that the onboard IDE interface supports. Modes 0 through 4 provide successively increased performance. In Auto (default) mode, the system automatically deter- mines the best mode for each device. Set the UDMA (Ultra DMA/33) mode for the specified onboard IDE interface. Ultra DMA/33 is a hard drive interface protocol that increases the burst data transfer rate to 33MBytes per second.
  • Page 55 Set the Infrared mode for the second serial port. The options are: HPSIR - IRDA compliant serial infrared port, and ASKIR - amplitude shift keyed infrared port. Select the value required by the IR device connected to the IR port. The options are: Full Duplex Mode - permits simultaneous two-direction transmission, and Half Du- plex Mode - permits transmission in one direction only at a time.

  • Page 56: Supervisor Password

    The Supervisor Password utility allows you to setup, change or disable the password stored in the BIOS. The Supervisor Password allows access to the system and Setup. To setup or change a password, highlight the SUPERVISOR PASSWORD option on the main menu screen and press <Enter>.

  • Page 57: Ide Hdd Auto Detection

    The IDE HDD Auto Detection option provides auto configuration of the hard drive installed in your system. To access the IDE HDD Auto Detection screen, high- light this option on the main menu screen and press <Enter>. Figure 4-9: IDE HDD Auto Detection Screen The IDE HDD Auto Detection option provides auto configuration of the hard drive installed in your system.

  • Page 58: Hdd Low Level Format

    Micronics recommends that only trained technicians use this utility. This selection allows you to perform a low level format of your hard disk drive. To select the HDD LOW LEVEL FORMAT option, highlight this option on the main menu screen and press <Enter>.

  • Page 59: Save And Exit Setup

    This selection saves the changes you have made in the setup program, then exits and reboots the system. After making all modifications in the setup program, exit to the main menu screen. Highlight the SAVE AND EXIT SETUP option and press <Enter>. Press <Y> to con- firm the changes made and <N>...
  • Page 61 Part Number: 09-00317-xx Processor: Single ZIF socket 7 ® Intel Pentium 75-200MHz (P54C) ® Intel Pentium 166-233MHz Processors w/ MMX ™ (P55C). ® Pentium Overdrive (P54CTB) Cyrix ™ 6x86 AMD-K5™ and AMD-K6™ Integrated VRM Chipset: Intel 430TX PCI chipset Intel PIIX 4 SMC FDC37C66x Ultra I/O chip CPU Clock Select:...

  • Page 62: Specifications

    Auto detection of add-in IDE board The environment in which the Twister AT is located is critical. Micronics recommends the following environmental specifications: Operating: 50 to 104 degrees Fahrenheit (10 to 40 degrees Celsius). Non -Operating: 50 to 140 degrees Fahrenheit (10 to 60 degrees Celsius).
  • Page 63 WARNING: Please do not open battery, dispose of in fire, recharge, put in backwards or mix with used or other battery types. The battery may explode or leak and cause personal injury.

  • Page 64: Support And Information Services

    Engineers will be glad to help you. You can contact us via telephone, fax or BBS. Before calling Technical Support please have the following information ready: The model name and 09 part number of your Micronics product, which is silkscreened on the face of the Twister AT system board.

  • Page 65: Table A.1: Support And Information Services

    7 days a week releases and other helpful information " Europe http://www.mcrni.com Customer Service - Order Micronics M-F: 8:00am to (800) 577-0977 and Orchid products 5:00pm (PST) (510) 651-3666 (Fax) France +33 (1) 45 43 56 26...
  • Page 67 During the Power-On Self Test (POST), the BIOS either sounds a beep code or displays a message when it detects a correctable error. Currently the only beep code indi- cates that a video error has occurred and the BIOS cannot initialize the video screen to display any addi- tional information.
  • Page 68 Message Possible Cause Solution KEYBOARD IS This message usually Be sure no objects are LOCKED OUT - indicates that one or resting on the keyboard. UNLOCK THE KEY more keys have been pressed during the keyboard tests. FLOPPY DISK(s) Cannot find or initialize Make sure the controller FAILED the floppy drive...
  • Page 69 Message Possible Cause Solution MEMORY TEST If POST detects an May require replacement FAILED error during memory of defective memory. testing, additional information appears giving specifics about the type and location of the memory error. MEMORY PARITY Indicates a memory You can use this ERROR AT..
  • Page 71 The Micronics system boards are designed so that the BIOS can be reprogrammed using a BIOS file. You can easily FLASH a BIOS by following the steps below: 1) After downloading the appropriate BIOS file from our BBS or Website, extract it to a bootable MS- DOS 6.X or Windows 95 diskette.
  • Page 72 $30.00 fee plus shipping charges for this service. (Price and availability subject to change.) If you prefer to send your system board in for the upgrade, the Micronics RMA department offers this service free of charge if your system board is under warranty.
  • Page 73 Returned product should be shipped prepaid or hand carried to Micronics. The purchaser assumes risk of loss or damage in transit, and unless otherwise agreed to in writing by Micronics, will pay inbound shipping charges.

  • Page 74: Limited Warranty

    Micronics will not be liable for any lost profits or any indirect, special incidental or consequential damages in connection with the product, even if Micronics has been advised of the possibility of such damages.
  • Page 75 Consult your dealer or an experienced radio/TV technician for help. To meet FCC requirements, shielded cables are required. NOTE: Changes or modifications not expressly approved by Micronics could void your authority to operate the equipment.
  • Page 76 16550 UART - A high speed chip for tem board. The buffered DIMMs come controlling serial ports. Although un- with standard DRAM chips for 3.3V necessary for a mouse, it is required for operation. modems that are 14,400 baud or faster. Bus - A group of electronic paths used APM - An acronym for Advanced to send data between parts of the sys-...
  • Page 77 DIMM - An acronym for Dual Inline that will retain its data until erased. It Memory Module. A small printed cir- can only be erased by exposing the cir- cuit board containing memory chips. cuitry in the chip to ultraviolet light. See also Flash ROM.
  • Page 78 the bytes arrive simultaneously, as op- POST - An acronym for Power On Self posed to serial transmission in which Test. A diagnostic program that is run bits arrive one by one. whenever the system is cold booted. Parallel Port - A connection for a RAM - An acronym for Random printer or similar peripheral.
  • Page 79 SRAM - An acronym for Static Ran- limited PC expansion with no more dom Access Memory. A type of hassles over add-in cards, dip switches, memory that can retain data without jumper cables, software drivers, IRQ requiring a regular clock signal. settings, DMA channels and I/O ad- Although they are faster than DRAM, dresses.
  • Page 80 Battery Disposal - 61 POST Messages - 65 BIOS Configuration - 33 Setup - 33, 35 Bulletin Board System (BBS) - 63 Configuring the Twister AT - 13 Diagram (Twister AT) - 14 Extended Data Out (EDO) Memory - 19, 21 Environmental Specifications - 60 Fast Page Mode (FPM) Memory - 19, 21 Help...
  • Page 81 Installation CPU - 28 Installing your Twister AT - 19 ISA Peripheral Card - 32 PCI Peripheral Card - 31 Quick Installation - 9 Jumper Settings - 15 Twister AT System Board Diagram - 14 Memory Adding - 21 Configurations - 24 Removing - 29, 30 Supported - 19 Online Services - 63...
  • Page 82 Technical Specifications - 59 Technical Support - 62 Troubleshooting - 65 Updating the System BIOS - 69 Utility Programs BIOS Features Setup - 38 Chipset Features Setup - 41 Exit Without Saving - 57 HDD Low Level Format - 56 IDE HDD Auto Detection - 55 Integrated Peripherals - 51 Load BIOS Defaults - 50...

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