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Twister AT System Board Manual

Chapter 2: Configuring the Twister AT

Table 2-5 lists the available processor supply voltages and the
corresponding jumper settings that select them.

Table 2-6 lists the jumper setting to flash the system BIOS.

CPU Type

Jumper Settings

JP16

JP17

JP18

JP15

JP13

JP12

JP11

JP14

Intel
P54C/CS/CTB/
Cyrix 6x86

Intel P55C MMX/
Cyrix 6x86L

AMD K5

AMD K6-166/200

AMD K6-233

Table 2-5: Power Supply Voltage Selection

Jumper

Function

Settings

JP2

Reserved
Normal

1-2
2-3

Table 2-6: Flash BIOS Selection

- Open

Содержание Twister AT Pentium

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

Страница 2: ... product at any time and without notice All Rights Reserved No part of this document may be photocopied reproduced trans lated or reduced to any medium or machine form without prior written consent from Micronics Portions of the Manual Portions of this manual were copied with permission from Award Software Inc All rights reserved Trademarks Award Modular BIOS is a registered trademark of Award Sof...

Страница 3: ...3 Static Electricity 13 Office Environment 13 Twister AT System Board 14 Jumper Settings 15 Chapter 3 Installing the Twister AT 19 Introduction 19 System Memory Support 19 Installing the Twister AT 20 Tools Required 20 Equipment Required 20 System Memory 21 Adding Memory 21 Memory Usage 22 Memory Configurations 24 Installing a CPU 28 Installing the DIMMs 29 Removing DIMMs 29 Installing the SIMMs 3...

Страница 4: ...Power Management Setup 45 PnP PCI Configuration Setup 48 Load BIOS Defaults 50 Load Setup Defaults 50 Integrated Peripherals 51 Supervisor Password 54 User Password 54 IDE HDD Auto Detection 55 HDD Low Level Format 56 Save and Exit Setup 57 Exit Without Saving 57 Appendix A Technical Information 59 Specifications 59 Environmental Specifications 60 Temperature Range 60 Relative Humidity 60 Battery ...

Страница 5: ...AT System Board Manual Appendix B Post Messages 65 Appendix C Updating the System BIOS 69 Appendix D Warranties and Notices 71 Limited Warranty 71 Non Warranty Service 72 FCC Statement 73 Glossary 74 Index 78 3 ...

Страница 6: ...en 45 Figure 4 7 PnP PCI Configuration Screen 48 Figure 4 8 Integrated Peripherals Screen 51 Figure 4 9 IDE HDD Auto Detection Screen 55 Figure 4 10 HDD Low Level Format Screen 56 List of Tables Table 2 1 System Speed Selection Intel 15 Table 2 2 System Speed Selection Cyrix 15 Table 2 3 System Speed Selection AMD 16 Table 2 4 Clear CMOS Memory Selection 16 Table 2 5 Power Supply Voltage Selection...

Страница 7: ...anagement UniversalSerialBussupport USB Ultra DMA 33 IDE hard drive protocol up to 33MBytes sec transfer rate concurrent PCI and support for differ entmemorytypes includingSynchronousDynamicRAM SDRAM and Extended Data Out RAM EDO RAM The USB interface has a maximum bandwidth of 12Mbps and can connect as many as 127 devices to a host system USB supports both standard devices that operate at the ful...

Страница 8: ...Module Intel 430TX PCI chipset Intel PIIX 4 SMC FDC37C66x Ultra I O chip 256K or 512K Pipelined Burst Level 2 Cache soldered onboard Five 32 bit PCI slots Four 16 bit ISA slots One is a shared PCI ISA slot Maximum memory 256MB Two 3 3V unbuffered 64 bit 168 pin DIMM sockets Four 32 bit 72 pin SIMM sockets Supports FPM EDO and SDRAM memory Two Universal Serial Bus USB ports via cable for desktop pe...

Страница 9: ...roughly 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 IBM OS 2 Warp 3 0 OS 2 Warp 4 0 SCO UNIXWare 2 1 1 Open Server 5 02 UNIX 3 2 4 2 Novell NetWare 3 12 Novell NetWare 4 11 Introduction ...

Страница 10: ...ng Glass it refers to something you should take a closer look at before proceeding further When you see the Exclamation Mark it gives important information on avoiding damage Common Names APM Automatic Power Management DIMM Dual Inline Memory Module DRAM Dynamic Random Access Memory EDO Extended Data Out FPM Fast Page Mode IDE Integrated Drive Electronics PCI Peripheral Component Interconnect SDRA...

Страница 11: ...und yourself to prevent damaging static dis charge by using an anti static wrist or ankle strap or touch a safely grounded metal object 3 Remove the Twister AT from its packaging 4 Configure and verify the system board s jumper set tings refer to Jumper Settings in Chapter 2 5 Install the CPU and the system memory 6 Install the system board in the chassis and make all necessary case connections 7 ...

Страница 12: ...ing one or more IDE drives the BIOS auto matically configures your drive s for you when the setting in the Type column is Auto See Chapter 4 for additional information and additional instructions 13 Verify that the floppy drive type s shown for Drive A and Drive B if installed are correct If necessary change the setting s for the floppy drive s using the Pg Up and or Pg Dn keys or the and keys 14 ...

Страница 13: ...ht 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 When you are finished press F10 to select Save Exit Setup You are now finished with the BIOS configuration Chapter 1 Quick Installation 11 ...

Страница 14: ...Twister AT System Board Manual Chapter 1 Quick Installation 12 ...

Страница 15: ... special anti static wrist or ankle strap If you do not have an anti static strap available touch both of your hands to a safely grounded object such as the power supply or chassis of a computer that is connected to the power socket After you have grounded yourself ground the Twister AT board via one of the solder pads that sur round its mounting holes When you removetheTwister AT from its packagi...

Страница 16: ...Twister AT System Board Manual Twister AT System Board Chapter 2 Configuring the Twister AT 14 Figure 2 1 Twister AT System Board Diagram ...

Страница 17: ...0 x 1 5 2 3 2 3 2 3 1 2 1 2 90MHz 60 x 1 5 2 3 2 3 1 2 1 2 1 2 100MHz 66 x 1 5 2 3 1 2 2 3 1 2 1 2 120MHz 60 x 2 0 2 3 2 3 1 2 1 2 2 3 133MHz 66 x 2 0 2 3 1 2 2 3 1 2 2 3 150MHz 60 x 2 5 2 3 2 3 1 2 2 3 2 3 166MHz 66 x 2 5 2 3 1 2 2 3 2 3 2 3 180MHz 60 x 3 0 2 3 2 3 1 2 2 3 1 2 200MHz 66 x 3 0 2 3 1 2 2 3 2 3 1 2 233MHz 66 x 3 5 2 3 1 2 2 3 1 2 1 2 Table 2 1 System Speed Selection Intel CPU Speed ...

Страница 18: ... lost 16 CPU Speed AMD CPU External Bus Speed CPU Frequency Ratio JP6 JP7 JP8 JP60 JP4 JP5 AMD K5 PR75 75MHz 50 x 1 5 2 3 2 3 2 3 1 2 1 2 AMD K5 PR90 90MHz 60 x 1 5 2 3 2 3 1 2 1 2 1 2 AMD K5 PR100 100MHz 66 x 1 5 2 3 1 2 2 3 1 2 1 2 AMD K5 PR120 90MHz 60 x 1 5 2 3 2 3 1 2 1 2 1 2 AMD K5 PR133 133MHz 66 x 2 0 2 3 1 2 2 3 1 2 2 3 AMD K5 PR166 166MHz 66 x 2 5 2 3 1 2 2 3 2 3 2 3 AMD K6 PR166 166MHz ...

Страница 19: ... lists the jumper setting to flash the system BIOS CPU Type Jumper Settings JP16 JP17 JP18 JP15 JP13 JP12 JP11 JP14 Intel P54C CS CTB Cyrix 6x86 Close Close Intel P55C MMX Cyrix 6x86L Close Close AMD K5 Close Close AMD K6 166 200 Close Close AMD K6 233 Close Close Table 2 5 Power SupplyVoltage Selection Jumper Function Settings JP2 Reserved Normal 1 2 2 3 Table 2 6 Flash BIOS Selection Open ...

Страница 20: ...rive Connector J17 Parallel Port Connector Can be disabled at the CMOS configuration screen J18 CPU Fan 1 12V Power 2 Ground J19 J21 PS 2 Keyboard Mouse Connector J22 Serial Port COM 1 Can be disabled at the CMOS configuration screen J23 Sleep Switch 3 Sleep_REQ 4 FPSleep_Pwr Infrared IR 6 5V 7 Key 8 Receive Data 9 Ground 10 Transmit Data 11 No connect HDD LED 13 5V 14 Key 15 HDD Active 16 5V Powe...

Страница 21: ...erals or components may void the warranty If prob lems arise while installing peripherals contact the computer dealer where you purchased the peripheral or Micronics Technical Support Department System Memory Support The flexibility of the Twister AT is augmented by its support for SDRAM EDO and FPM DRAM memory SDRAM memory is a new faster memory technology that features the ability to synchronize...

Страница 22: ...wister AT Small Phillips screwdriver Tweezers or a pair of needle nose pliers Tray to hold loose screws Equipment Required Micronics recommends using the following equipment with the Twister AT for a typical configuration AT chassis with standard hardware A high quality AT power supply capable of providing continuous power within a 5 volt range A power filter may be used with a noisy AC power sour...

Страница 23: ...on memory configurations and show how to physically install the memory Adding Memory The following is a list of rules to follow when installing 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 module...

Страница 24: ...g the Twister AT 22 S4 S2 D1 D2 S1 S3 or S4 S2 D1 D2 S1 S3 D1 D2 S1 S3 Memory Usage The following information lists sample configurations for utilizing both SIMM and DIMM memory modules SIMM Configurations DIMM Configurations S4 S2 S1 S3 S4 S2 D1 D2 or ...

Страница 25: ... 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 or S1 S3 S1 S3 S4 S2 S4 S2 D1 D2 D1 D2 ...

Страница 26: ...MM 4 DIMM 1 DIMM 2 8MB 1Mx32 1Mx32 16MB 2Mx32 2Mx32 16MB 1Mx32 1Mx32 1Mx32 1Mx32 24MB 1Mx32 1Mx32 2Mx32 2Mx32 32MB 4Mx32 4Mx32 32MB 2Mx32 2Mx32 2Mx32 2Mx32 40MB 1Mx32 1Mx32 4Mx32 4Mx32 48MB 2Mx32 2Mx32 4Mx32 4Mx32 64MB 8Mx32 8Mx32 64MB 4Mx32 4Mx32 4Mx32 4Mx32 72MB 1Mx32 1Mx32 8Mx32 8Mx32 80MB 2Mx32 2Mx32 8Mx32 8Mx32 96MB 4Mx32 4Mx32 8Mx32 8Mx32 128MB 16Mx32 16Mx32 128MB 8Mx32 8Mx32 8Mx32 8Mx32 136...

Страница 27: ...Mx32 2Mx32 2Mx32 2Mx32 64MB 2Mx32 2Mx32 2Mx32 2Mx32 80MB 1Mx32 1Mx32 1Mx32 1Mx32 96MB 2Mx32 2Mx32 2Mx32 2Mx32 96MB 4Mx32 4Mx32 4Mx32 4Mx32 128MB 4Mx32 4Mx32 4Mx32 4Mx32 144MB 1Mx32 1Mx32 1Mx32 1Mx32 160MB 2Mx32 2Mx32 2Mx32 2Mx32 192MB 8Mx32 8Mx32 16Mx32 16Mx32 192MB 4Mx32 4Mx32 4Mx32 4Mx32 192MB 8Mx32 8Mx32 8Mx32 8Mx32 256MB 16Mx32 16Mx32 16Mx32 16Mx32 256MB 8Mx32 8Mx32 8Mx32 8Mx32 Chapter 3 Insta...

Страница 28: ...he Twister AT Memory Size SIMM 1 SIMM 2 SIMM 3 SIMM 4 DIMM 1 DIMM 2 8MB 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 2Mx64 8Mx64 96MB 4Mx64 8Mx64 128MB 8Mx64 8Mx64 256MB 16Mx64 16Mx64 ...

Страница 29: ...x64 2Mx64 4Mx64 2Mx64 8Mx64 4Mx64 4Mx64 4Mx64 8Mx64 8Mx64 8Mx64 1Mx64 2Mx64 4Mx64 16Mx64 8MB 1Mx32 1Mx32 to 16Mx32 16Mx32 in any combination to 1Mx32 1Mx32 to 16Mx32 16Mx32 in any combination 256MB 24MB to 256MB NOTE Use the same type and size of memory for every bank When mixing different memory types the memory will default to the speed of the slowest RAM installed Table 3 4 Memory Configuration...

Страница 30: ...place the processor into the socket making sure pin 1 on the processor and pin 1 on the socket are aligned 5 Push the lever down until it locks into place 6 Make sure the speed and the voltage selection jumpers are set correctly refer to Chapter 2 Jumper Settings WARNING Pentium processors require a heat sink with a cooling fan Failure to provide adequate cooling of the proces sor may seriously af...

Страница 31: ...e probably using the incorrect type of DIMM unbuf fered 2 Insert the DIMM at a 90 degree angle 3 Gently push the DIMM straight down until it locks into place past the release tabs Figure 3 1 Installing a 168 Pin DIMM Removing DIMMs To remove DIMMs follow the steps below 1 With both thumbs or fingers press the release tabs away from the socket 2 With the DIMM free from the release tabs lift the mod...

Страница 32: ...h the notch on the SIMM socket Figure 3 1 2 Insert the SIMM at a 45 degree angle 3 Gently push the SIMM into an upright position until it locks into place past the release tabs Figure 3 2 Installing a 72 Pin SIMM Removing SIMMs To remove SIMMs follow the steps below 1 With both thumbs or fingers press the release tabs away from the socket 2 With the SIMM free from the release tabs lift the module ...

Страница 33: ...f and remove its cover 2 Choose an unused PCI slot and remove the slot cover 3 Insert the card with the bottom edge level to the slot Never insert the card at an angle 4 Carefully push the card straight down making sure the card is fully inserted 5 Replace the screw which holds the card in place 6 Replace the computer cover 7 Refer to the PCI card s documentation additional instructions regarding ...

Страница 34: ...r 2 Choose an unused ISA slot and remove the slot cover 3 Insert the card with the bottom edge level to the slot Never insert the card at an angle 4 Carefully push the card straight down making sure the card is inserted fully 5 Replace the screw that holds the card in place 6 Replace the computer cover 7 Refer to the ISA card s documentation for addi tional instructions regarding installation and ...

Страница 35: ... all your cables and peripherals for bad connections You may also get beep codes or error messages If this occurs consult Appendix B for a guide to possible solutions After the system properly boots it is ready to be config ured The following information explains the proper procedures for BIOS configuration Setup The Setup program is used to configure the computer s BIOS Basic Input Output System ...

Страница 36: ... 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 appears at the bottom of the screen press the DEL key to start the Setup program The main CMOS Setup utility screen Figure 4 2 appears Note that the Setup program can only be activated during the boot sequence Chapter 4 The BIOS Setup Utility ...

Страница 37: ...eens 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 The main menu screen also contains the following op tions Load BIOS Defaults Load Setup Defaults HDD Low Level Format Save Exit Setup and the Exit Without Saving To select any of these screens or options use the arro...

Страница 38: ... 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 arrow keys to highlight the date and follow the same procedure to set the time Hard Disks Setup The BIOS supports up to four IDE drives You can specify the physical and electronic properties of the disk drives installed Relevant specifications include the type num ber of cyl...

Страница 39: ...matches the floppy drive you installed The BIOS supports 2 88MB 1 44MB 1 2MB 720KB and 360KB floppy drives Video Select the type of video card installed into your system The default setting is EGA VGA Halt On During the Power On Self Test POST the system stops if the BIOS detects a hardware error The default setting is All Errors Base Extended Other Memory A small section in the lower right corner...

Страница 40: ... 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 The default setting is Enabled External Cache The External Cache selection enables or disables the external L2 cache and the onboard secondary cache The default setting is Enabled 38 ...

Страница 41: ...ppy drives When set to Enable drive A becomes drive B and drive B becomes drive A Boot Up Floppy Seek When set to Enabled the BIOS tests seeks floppy drives to determine whether they have 40 or 80 tracks Drives with 720KB 1 2MB and 1 44MB capacity all have 80 tracks The default setting is Disabled Boot Up Numlock Status Toggle between On and Off to control the state of the NumLock key when the sys...

Страница 42: ...t PCI VGA palettes The default setting is Disabled OS Select for DRAM 64MB This selection allows you to select the amount of memory installed for your operating system Select NON OS2 default if your operating system has less than 64MB of memory If your operating system has more than 64MB of memory installed select the OS2 setting Video BIOS Shadow Enabling this selection allows you to shadow the B...

Страница 43: ...ration Auto Configuration selects predetermined optimal val ues of the chipset parameters When Disabled chipset parameters revert to setup information stored in CMOS Many fields in this screen are not available when Auto Configuration is Enabled DRAM Timing This selection configures the DRAM read write timing for maximum performance The options are 60ns de fault and 70ns NOTE Before changing this ...

Страница 44: ...ts the timing for reads from EDO or FPM memory The lower the timing numbers the faster the system addresses memory Selecting timing numbers lower than the in stalled DRAM is able to support can result in memory errors DRAM Write Burst Timing Sets the timing for writes to memory The lower the timing numbers the faster the system addresses memory SelectingtimingnumberslowerthantheinstalledDRAM is ab...

Страница 45: ...This selection sets the CAS latency and RAS to CAS delays The default setting is 2 2 SDRAM Speculative Read You can enable or disable the system chipset s ability to speculate on a DRAM read address thereby reducing read latencies The default setting is Disabled System BIOS Cacheable Selecting Enabled allows caching of the system BIOS ROM at F0000h FFFFFh resulting in better system performance How...

Страница 46: ...lock cycles for 16 bit and 8 bit I O Memory Hole at 15M 16M You can reserve this area of system memory for the ISA adapter ROM When this area is reserved it cannot be cached PCI Passive Release When Enabled CPU to PCI bus accesses are allowed during passive release Otherwise the arbiter only ac cepts another PCI master access to local DRAM PCI Delayed Transaction The chipset has an embedded 32 bit...

Страница 47: ... 6 Power Management Screen Power Management This selection allows you to select the type or degree of power saving for Sleep Standby and Suspend modes The options are Maximum Power Savings User De fined and Minimum Power Savings Max Saving Maximum power savings Inactivity period is 1 minute in each mode User Define Set each mode individually Select time out periods in the PM Timers section Min Sav...

Страница 48: ...eriod of system inactivity 1 minute to 1 hour the fixed disk drive and the video shut off while all other devices still operate at full speed Suspend Mode After the selected period of system inactivity 1 minute to 1 hour all devices except the CPU shut off Chapter 4 The BIOS Setup Utility 46 SYNC Blank System turns off vertical and horizontal synchronization ports and writes blanks to the video bu...

Страница 49: ... Select whether or not video activity restarts the global timer for Standby Mode IRQ 8 Clock Event Sets the monitoring of IRQ8 Real Time Clock so that it does not awaken the system from Suspend Mode Reload Global Timer Events You can disable monitoring of common interrupt re quests so they do not awaken the system from or reset activity timers for Standby mode Chapter 4 The BIOS Setup Utility 47 ...

Страница 50: ...e 4 7 PnP PCI Configuration Screen PnP OS Installed When set to Yes this selection allows the system to work with a Plug and Play PnP operating system such as Windows 95 The PnP BIOS will configure only PCI and ISA Plug and Play cards needed to boot the system and allow the operating system or device drivers to configure the remaining cards The default setting is No Resources Controlled By The Twi...

Страница 51: ... on the type of device using the interrupt Legacy ISA Devices compliant with the original PC AT bus specification requiring a specific interrupt such as IRQ4 for COM 1 or older ISA cards that use jumpers to ad just resources PCI ISA PnP Devices compliant with the Plug and Play standard whether designed for PCI or ISA bus architecture DMA n Assigned To When resources are controlled manually assign ...

Страница 52: ... when the program prompts you with the Load BIOS Defaults question Load Setup Defaults This selection allows automatic configuration of all the options in the Standard CMOS Setup BIOS Features Setup and Chipset Features Setup with the setup de faults If problems are encountered after loading the setup defaults reboot the system and load the BIOS defaults To select LOAD SETUP DEFAULTS high light th...

Страница 53: ...ress Enter Figure 4 8 Integrated Peripherals Configuration Screen IDE HDD Block Mode Block mode is also called block transfer multiple com mands or multiple sector read write If your IDE hard drive supports block mode most new drives do select Enabled default for automatic detection of the optimal number of block read writes per sector the drive can support IDE Primary Secondary Master Slave PIO T...

Страница 54: ...pport the UDMA mode On Chip Primary Secondary PCI IDE The integrated peripheral controller contains an IDE interface with support for two IDE channels Select Enabled to activate each channel separately USB Support Select Enabled default if your system contains a Uni versal Serial Bus USB controller and you have USB peripherals and an operating system that supports USB Onboard FDC Controller Select...

Страница 55: ...s are Full Duplex Mode permits simultaneous two direction transmission and Half Du plex Mode permits transmission in one direction only at a time Onboard Parallel Port Select an address and interrupt for the physical parallel printer port Parallel Port Mode Type Selectanoperatingmodefortheonboardparallel printer port Select Normal default unless your hardware and software require one of the other ...

Страница 56: ...program will prompt you to confirm the new pass word before exiting and enabling the utility To disable thepassword press Enter whentheprogramprompts you to enter the new password WARNING If you forget the Supervisor Password it cannot be disabled without resetting the CMOS User Password The User Password utility allows you to setup change or disable the password stored in the BIOS Follow the same...

Страница 57: ...ter 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 It supports LBA Large and Normal modes If your hard disk drive s capacity is under 528MB select Normal mode NOTE It is recommended that you select Normal mode for your hard disk drive if you will be using UNIX If the system s hard disk drive has a ca...

Страница 58: ...select the HDD LOW LEVEL FORMAT option highlight this option on the main menu screen and press Enter Figure 4 10 HDD Low Level Format Screen The selections available are Low Level Format Utility Select Drive Bad Track List and Preformat WARNING This utility should not be run on an IDE or EIDE hard drive unless the manufacturer of the hard drive instructs you to do so Chapter 4 The BIOS Setup Utili...

Страница 59: ...een Highlight the SAVE AND EXIT SETUP option and press Enter Press Y to con firm the changes made and N or ESC if addi tional modifications are needed before exiting the setup program Exit Without Saving This selection abandons all previous settings then exits and reboots the system From the main menu screen highlight the EXIT WITHOUT SAVING option and press Enter Press Y and the system will exit ...

Страница 60: ...Twister AT System Board Manual Chapter 4 The BIOS Setup Utility 58 ...

Страница 61: ...tel 430TX PCI chipset Intel PIIX 4 SMC FDC37C66x Ultra I O chip CPU Clock Select Support for 50 60 66MHz CPU bus Form Factor Baby AT Expansion Five 32 bit PCI slots Four 16 bit ISA slots One is a shared PCI ISA slot BIOS Award BIOS w 1MB Flash PCI auto configuration APM 1 2 Auto detection of memory size Auto detection and display of EDO and SDRAM memory Auto configuration of IDE disk drives Multi ...

Страница 62: ...ort Supports two floppy drives 2 88MB 1 44MB 1 2MB 720KB 360KB PCI IDE Ports T wo 40 pin IDE connectors Primary and Secondary IDE Multiple sector transfer support Auto detection of add in IDE board Environmental Specifications The environment in which the Twister AT is located is critical Micronics recommends the following environmental specifications Temperature Range Operating 50 to 104 degrees ...

Страница 63: ... Appendix A Technical Information 61 Battery Disposal 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 ...

Страница 64: ...s Technical Support If you need technical assistance our Technical Support 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 whichissilkscreenedon the face of the Twister AT system board Your computer information such as CPU type oper...

Страница 65: ...56 363373 RMA Return Materials Authorization Return products for repair M F 8 00am to 4 45pm PST USA 510 661 3030 510 683 0543 Fax Fax On Demand Automated system for product literature technical bulletins and other helpful information 24 hours a day 7 days a week USA 510 661 3199 World Wide Web Product information technical support press releases and other helpful information 24 hours a day 7 days...

Страница 66: ...Twister AT System Board Manual Appendix A Technical Information 64 ...

Страница 67: ...CKSUM ERROR DEFAULTS LOADED Checksum of CMOS is incorrect so the system loads the default equipment configuration This error may have been caused by a weak battery Check the battery and replace if necessary DISKETTE DRIVES OR TYPES MISMATCH ERROR Type of diskette drive installed in the system is different from the CMOS configuration Run Setup to reconfigure the drive type correctly DISPLAY SWITCH ...

Страница 68: ... the Hard Drive selection in Setup is set to None HARD DISK s DIAGNOSTICS FAILED The system may run specific disk diagnostic routines This message appears if one or more hard disks return an error when running the diagnostics Rerun Setup and check connections May require a hard disk replacement PRIMARY MASTER HARD DISK FAILED POST detects an error in the primary master IDE hard drive May require a...

Страница 69: ... location You can use this location along with the memory map for your system to find and replace the defective memory chips PRESS F1 TO DISABLE NMI F2 TO REBOOT The BIOS detected a nonmaskable Interrupt condition during boot Reboot the system with the NMI enabled OVERRIDE ENABLED DEFAULTS LOADED If the system cannot boot using the current CMOS configuration the BIOS can override the current confi...

Страница 70: ...Twister AT System Board Manual Appendix B POST Messages 68 ...

Страница 71: ...dows 95 press F8 when you see Starting MS Windows 95 Select the option Safe Mode Command Prompt 4 NowyoucanruntheFLASHutilityfromthebootable floppy disk Refer to the README TXT file in cluded with the BIOS update for detailed instruc tions 5 After the FLASH screen appears select Y es to save the current BIOS or N o if you do not want to save the current BIOS NOTE It is recommended that you save th...

Страница 72: ...roNiche Information Systems 800 733 9188 There is a 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 Appendix C Updating the System BIOS 70 ...

Страница 73: ...sive or inad equate heating or air conditioning or electrical power failures surges or other irregularities 4 any statement about the product other than those set forth in this warranty or 5 nonconformity to models or samples shown to the purchaser Any models or samples were for the sole purpose of suggesting the character of the product and are not intended to form the basis of the bargain A rece...

Страница 74: ...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 Micronics makes no warranties or representations as to performance of products or as to service to distributor or to any person except as set forth in Micronics limited warranty accompanying delivery of product Micronics discl...

Страница 75: ...ful interference to radio communications Interfer ence to radio or television reception can be determined by turning the equipment off and on You are encouraged to try to correct the interference by one or more of the following measures Reorient the receiving antenna Increase the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different from that...

Страница 76: ...control lines to reduce loading on the system board This buff ering action increases the maximum number of modules on the same sys Glossary Glossary 74 tem board The buffered DIMMs come with standard DRAM chips for 3 3V operation Bus A group of electronic paths used to send data between parts of the sys tem On a system board the bus con nects the peripheral cards with the microprocessor via the ex...

Страница 77: ...ases the capabilities of the parallel port EPROM Acronym for Erasable Pro grammable Read Only Memory A type of ROM chip that can be pro grammed with relatively simple tools that will retain its data until erased It can only be erased by exposing the cir cuitry in the chip to ultraviolet light See also Flash ROM Flash ROM A type of ROM chip that will retain its data until erased It can be erased or...

Страница 78: ... installation of peripher als Theoretically a newly installed card will automatically configure itself and work properly without requiring jumper configuration or device drivers POST An acronym for Power On Self Test A diagnostic program that is run whenever the system is cold booted RAM An acronym for Random Access Memory A type of memory that is used as the working memory of a computer system Se...

Страница 79: ...opagation delay of the logic buffer This increase in speed comes at the cost of reducing the maximum num ber of modules on the same system board USB An acronym for Universal Se rial Bus The simple and flexible way to connect devices to your desktop or notebook PC USB allows virtually un Glossary 77 limited PC expansion with no more hassles over add in cards dip switches jumper cables software driv...

Страница 80: ...tion 33 Setup 33 35 Bulletin Board System BBS 63 C Configuring the Twister AT 13 D Diagram Twister AT 14 E Extended Data Out EDO Memory 19 21 Environmental Specifications 60 F Fast Page Mode FPM Memory 19 21 H Help Bulletin Board System BBS 63 Telephone Numbers 63 Troubleshooting 65 Index 78 ...

Страница 81: ...Peripheral Card 32 PCI Peripheral Card 31 Quick Installation 9 J Jumper Settings 15 M Twister AT System Board Diagram 14 Memory Adding 21 Configurations 24 Removing 29 30 Supported 19 O Online Services 63 P POST Messages 65 S SDRAM Synchronous DRAM Memory 19 21 Specifications 59 System BIOS 33 69 ...

Страница 82: ...atures 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 Load Setup Defaults 50 PnP PCI Configuration Setup 48 Power Management Setup 45 Save and Exit Setup 57 Standard CMOS Setup 36 Supervisor Password 54 User Password 54 W World Wide Web 63 Index 80 ...

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