American Megatrends Enterprise-III User Manual
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American Megatrends Enterprise-III User Manual

American Megatrends Enterprise-III User Manual

American megatrends enterprise-iii motherboards: user guide
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American Megatrends, Inc.
Series 68 Enterprise-III
80486 EISA Motherboard
User's Guide
MAN-680
4/16/93

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Summary of Contents for American Megatrends Enterprise-III

  • Page 1 American Megatrends, Inc. Series 68 Enterprise-III 80486 EISA Motherboard User's Guide MAN-680 4/16/93...
  • Page 2 Limited Warranty Buyer agrees if this product proves to be defective, that American Megatrends, Inc. is only obligated to replace or refund the purchase price of this product at American Megatrend's discretion according to the terms and conditions of the warranty card accompanying the Enterprise-III motherboard.

  • Page 3: Table Of Contents

    Table of Contents Chapter 1 Introduction to VL-Bus ... 1 Chapter 2 Enterprise-III Description ... 5 Chapter 3 Installation ... 13 Step 1 Unpack the Motherboard ... 13 Step 2 Set Switch and Jumper Options ... 15 Step 3 Install Memory ... 18 Step 4 Install Upgrade Processor ...
  • Page 4 Table of Contents, Continued Chapter 5 AMIBIOS Setup, cont'd Section 6 Hard Disk Utility ... 71 When to Use AMIBIOS Hard Disk Utilities ... 72 Hard Disk Format Utility ... 73 Auto Interleave Utility ... 75 Hard Disk Utility Error Messages ... 77 Appendix A Boot Block BIOS Utility ...
  • Page 5 Technical Support If an Enterprise-III motherboard fails to operate as described or you are in doubt about a configuration option, please call technical support at 404-246-8600. Acknowledgments This manual was written by Vivek Saxena, Paul Narushoff, and Robert Cheng.

  • Page 6: Chapter 1 Introduction To Vl-Bus

    Chapter 1 Introduction to VL-Bus The Series 68 Enterprise-III EISA Local Bus Motherboard conforms to the VESA® (Video Electronics Standards Association) VL-Bus® specifications as well as the EISA (Extended Industry Standard Architecture) specification. VL-Bus Slots are Buffered The American Megatrends Enterprise-III VL-Bus implementation is unique. The American Megatrends VL- Bus design fully buffers both VL-Bus expansion slots.
  • Page 7 Both VL-Bus slots on the Enterprise-III motherboard have bus mastering capability. EISA and Local Bus Expansion The American Megatrends Enterprise-III EISA Local Bus motherboard has six bus master EISA expansion slots and two VL-Bus expansion slots. The VL-Bus slots consist of a standard EISA 32-bit slot connector (with no EISA bus mastering capability but full VL-Bus bus mastering) and an inline VL-Bus connector.
  • Page 8 32-bit EISA expansion socket connector. A future VL-bus specification will use a 32-bit MCA connector (a total of 64 bits). The VL-Bus specification supports 32-bit EISA adapter cards. Enterprise-III EISA VLB Motherboard User's Guide...
  • Page 9 VL-Bus Adapter Cards The VL-Bus Adapter Cards have a different set of connectors on the bottom of the card, as shown below. These types of adapter cards will fit in the VL-Bus expansion slots only.

  • Page 10: Chapter 2 Enterprise-Iii Description

    Enterprise-III Description Dimensions The American Megatrends 80486 Enterprise-III EISA Local Bus motherboard is approximately 12" by 13", similar in size to a standard AT motherboard. The mounting hole locations permit the motherboard to be used with any AT chassis. The height of the components is no more than 1½ inches, but allow 2 inches of clearance for the power supply connectors, as shown below.

  • Page 11: Specifications

    The Enterprise-III has a 168-pin PGA socket for an Intel 80486DX, 80486SX, or 80486DX2 CPU. Overdrive Support The Enterprise-III has a 240-pin LIF Upgrade Socket for an 80487SX (if an 80486SX is in the CPU Socket) or a future Intel processor, such as the Intel P23T or P24T.
  • Page 12 Processor Speeds The Enterprise-III operates at either of two speeds: high or low. High speed is set at time of manufacture to the processor speed (25, 33, 50, or 66 MHz). Low speed (8 MHz) is simulated by adding extra cycles. The clock speeds can be changed via the <Ctrl>...
  • Page 13 Continued SRAM Type The Enterprise-III EISA Local Bus motherboard uses 15 ns 32 KB x 8 SRAM DIPs for cache memory. The Enterprise-III EISA motherboard has 128 KB of Read Only Memory in a Flash EPROM used for the system BIOS at E0000h - FFFFFh. The AMIFlash Utility programs the Flash EPROM. AMIFlash is provided with the Enterprise-III motherboard.

  • Page 14: Built-In Battery

    Expansion Slots The Enterprise-III has eight 32-bit EISA expansion slots. Six of these expansion slots are EISA bus mastering slots. The other two slots are VL-Bus bus mastering slots. The VL-Bus and EISA slots also can be used for 8- or 16-bit ISA adapter cards.

  • Page 15: Ps/2 Mouse

    Specifications, Continued Fifteen Interrupt Levels The Enterprise-III has 15 hardware interrupt levels. Of course, NMIs take precedence over the following hardware interrupts. Priority Priority Priority Priority 3-10 Chapter 2 Enterprise-III Description Label Label Typical Interrupt Source Typical Interrupt Source Label...
  • Page 16 Refresh Generation The Enterprise-III has a refresh generation feature. I/O Capability The Enterprise-III accesses 32-, 16-, or 8-bit memory devices and 32-, 16-, or 8-bit I/O devices on both the VL-Bus and the EISA bus. I/O Address Space The Enterprise-III uses I/O addresses x100h through x3FFh for ISA compatible I/O (x = a "don't care"...

  • Page 17: Eisa Expansion Slots

    Specifications, Memory Range The Enterprise-III uses 32-bit memory addresses to access 4 gigabytes of memory address space on the EISA expansion slots. I/O Channel Check The Enterprise-III supports the use of the I/O channel check to generate NMIs. I/O Wait State Generation The Enterprise-III has an open bus structure (allowing multiple microprocessors to share system resources, including memory).

  • Page 18: Chapter 3 Installation

    Install adapter cards Perform initial test and configuration. Step 1 Unpack the Motherboard Step Enterprise-III EISA VLB Motherboard User's Guide Action Action If the box is damaged, call Technical Support at 404-246-8600. Perform all unpacking and installation procedures on a grounded anti-static mat.
  • Page 19 Enterprise-III Motherboard Layout CPU and Upgrade Socket Intel 80486SX, 80486DX, or 8048DX2 CPUs can be inserted in the CPU socket. An Intel 80487SX math coprocessor or an Upgrade Processor (P23T or P24T) can be inserted in the Upgrade Socket. Chapter 4 AMIBIOS POST...

  • Page 20: Step 2 Set Switch And Jumper Options

    J2 is a two-pin header next to the power supply connectors which should be OPEN (the default setting). Place a two-pin shorting bridge on J2 only when the Flash EPROM BIOS is to be updated. See the following illustration for the J2 location. Enterprise-III EISA VLB Motherboard User's Guide Description Turns on manufacturing diagnostics. This switch is factory- set to OFF and should remain OFF.
  • Page 21 J7 Select Processor Type J7 is a four-pin single-inline berg that selects the processor type. Pins 1-2 and 3-4 are shorted if the Enterprise-III EISA motherboard has an 80486DX or 80486DX2 microprocessor. Pins 2-3 are shorted if the motherboard has an 80486SX processor.
  • Page 22 MHz or less (the default setting). Short pins 2-3 if running Local Bus Adapter Cards at speeds higher than 33 MHz. J30 is shown below. Set J30 before installing the motherboard. See the graphic on the next page for the location of J30. Enterprise-III EISA VLB Motherboard User's Guide...
  • Page 23 Step 2 Set Switch and Jumper Options, J19 CPU Priority J19 is a three-pin header that selects the CPU priority. Short pins 1-2 to set Low priority (the default setting). Short pins 2- 3 to set High priority. J20, J21, J24 Select Processor Speed Set the following two-pin berg headers as described in the table below for 20 MHz operation.

  • Page 24: Step 3 Install Memory

    Step 3 Install Memory The main memory on the Enterprise-III EISA motherboard consists of four 32-bit memory banks of four SIMM sockets each. The SIMM sockets accept 256 KB x 9, 1 MB x 9, 4 MB x 9, or 16 MB x 9 SIMMs in the combinations shown below.
  • Page 25 Step 3 Install Memory, SIMM Part Numbers Memory Type 256 KB x 36 1 MB x 36 4 MB x 36 16 MB x 36 Chapter 4 AMIBIOS POST Continued Manufacturer Micron® MT9D25636M-7 Mitsubishi® MH26636BJ-7 Motorola® MCM36256S-70 Oki® MSC2320A-70YS9 PNY® P36256-70 Samsung®...
  • Page 26 The SIMM banks have four SIMM sockets each, a total of 16 SIMM sockets. The sockets take 256 KB x 9, 1 MB x 9, 4 MB x 9, or 16 MB x 9 SIMMs. Use only one SIMM type to fill each bank. The following shows the SIMM location. Enterprise-III EISA VLB Motherboard User's Guide...
  • Page 27 Step 3 Install Memory, Place the motherboard on an anti-static mat. With the component side of the SIMM facing you, firmly push the SIMM into the socket. When properly inserted, the SIMM clicks in place as the latching pins engage, as shown below. Selecting SIMMs The SIMMs must meet specifications:...

  • Page 28: Step 4 Install Upgrade Processor

    Intel 80487SX. When a 169-pin 80487SX or P23T is installed, the outer row of socket pins is not filled. A 240-pin Upgrade Processor, such as an Intel P24T, can also be installed. Enterprise-III EISA VLB Motherboard User's Guide...
  • Page 29 Step 4 Install Upgrade Processor, Continued Pin 1 of the socket is on a corner next to a "1" on the motherboard. Check for bent pins on the chip. Gently straighten any bent pins with a pair of pliers. Install the component in the socket. Align the pins and press the chip firmly in the socket, making sure that pin 1 of the chip is aligned with pin 1 of the socket.
  • Page 30 Press the chip firmly to make sure that it is properly inserted. Inspect the coprocessor to make certain that all pins are connected. Power up again. Call Technical Support at 404-246-8600 if still not configured. Enterprise-III EISA VLB Motherboard User's Guide Action...

  • Page 31: Step 5 Install The Motherboard

    Step 5 Install the Motherboard The mounting holes on the motherboard are the same as an AT motherboard. Standoffs and mounting screws should be supplied with the chassis. Step Action Wear an antistatic wristband. Place the chassis for the motherboard on an anti-static mat.
  • Page 32 Place the two mounting screws in the holes provided for them and tighten them. If necessary, shift the motherboard slightly to align the mounting holes on the motherboard with the holes on the chassis. Enterprise-III EISA VLB Motherboard User's Guide Action...

  • Page 33: Step 6 Connect The Power Supply

    Step 6 Connect the Power Supply The power supply should match the physical configuration of the chassis. Make sure that the power switch is Off before assembly. Before attaching the power cables, make sure that the proper voltage is selected. Power supplies often can run on a wide range of voltages, but must be set (usually with a switch) to the proper range.
  • Page 34 The connector with three red wires and two black wires is attached to P3. The connector with the Orange line 1 is attached to P2. P1 is provided for high capacity power supplies that have an extra cable. The following graphic shows the wire colors for all power connectors. Enterprise-III EISA VLB Motherboard User's Guide Continued...

  • Page 35: Power Supply Connectors

    Power Supply Connectors are Keyed Power supply connectors are keyed to make sure you attach them correctly. The keys must be cut to fit on some power supplies, as shown below. Chapter 4 AMIBIOS POST...
  • Page 36 -5 Volts (White wire) VCC (Red wire) VCC (Red wire) VCC (Red wire) P1 Pinout Description VCC (Red wire) VCC (Red wire) VCC (Red wire) Ground (Black wire) Ground (Black wire) Ground (Black wire) Enterprise-III EISA VLB Motherboard User's Guide Continued...

  • Page 37: Step 7 Connect The Keyboard

    Step 7 Connect the Keyboard The keyboard connector is a five-pin DIN socket (see below) labeled KEYBRD and J4 on the motherboard. It accepts a standard ISA keyboard. Chapter 4 AMIBIOS POST Assignments Keyboard clock Keyboard data Not used Ground...

  • Page 38: Step 8 Connect The Mouse

    Step 8 Connect the Mouse The American Megatrends Enterprise-III EISA VL-Bus motherboard now has two types of PS-2-type mouse connectors: • a standard 6-pin miniDIN plug, and • a 10-pin berg connector. You cannot use both mouse connectors simultaneously. J100 is a 10-pin berg connector that attaches to a PS/2-compatible mouse via a standard serial cable. J3 is a six-pin miniDIN socket (see below) labeled J3 on the motherboard.

  • Page 39: Step 9 Connect Cables

    Step 9 Connect Cables When attaching connectors to the motherboard, make sure you attach the correct end. Most connector wires are color- coded. Match the color of the wires leaving pin 1 on the switch or LED to pin 1 on the connector end. There may be more than one connector with the same color-coded wires.
  • Page 40 J8 Speaker Connector J8 is a four-pin single-inline berg. Pin 1 is labeled by a plus (+). See the graphic at the top of the page for the J8 location. J8 is shown below. Enterprise-III EISA VLB Motherboard User's Guide Continued Description...
  • Page 41 Step 9 Connect Cables, J10 Keyboard Lock Connector J10 is a five-pin single-inline berg that connects via a cable to the keyboard lock. The keyboard lock allows you to lock the keyboard, protecting the system from unauthorized use. Pin 1 of J10 on the motherboard is labeled with a plus (+) sign.
  • Page 42 You can select Low or High speed by pressing the turbo switch, attached to J14 via a connector cable. J14 is shown below. See the graphic at the top of page 65 for the J14 location. Enterprise-III EISA VLB Motherboard User's Guide Continued...

  • Page 43: Step 10 Install Adapter Cards

    Step 10 Install Adapter Cards The Enterprise-III EISA motherboard has eight expansion slots numbered SLOT - SLOT8 that can accept the following types of adapter cards. See the following graphic for the location of the slots. Chapter 4 AMIBIOS POST...
  • Page 44 VL-Bus Bus Mastering 32-bit Local Bus Adapter Cards EISA 32-bit Bus Mastering Cards EISA 32-bit Non-Bus Mastering Cards Standard 8-bit XT- and 16-bit AT-compatible Cards Enterprise-III EISA VLB Motherboard User's Guide Slots Slots 7 and 8 Slots 1 - 6...

  • Page 45: Eisa Adapter Card

    Step 10 Install Adapter Cards, EISA Adapter Cards EISA adapter cards have different fingers on the edge connecters than ISA adapter cards. The EISA expansion slots have two rows of contacts, one below the other. AN ISA (AT-compatible) Adapter Card can be inserted into the EISA connector only far enough to make contact with the upper row of contacts.
  • Page 46 SA16 SA15 SA14 SA13 SA12 SA11 SA10 SA09 SA08 SA07 SA06 SA05 SA04 SA03 SA02 SA01 SA00 Enterprise-III EISA VLB Motherboard User's Guide Continued RSTDRV IRQ9 DREQ2 OWS- SMEMW- SMEMR- IOW- IOR- DACK3- DREQ3 DACK1- DREQ1 REF- SYSCLK IRQ7 IRQ6...
  • Page 47 Step 10 Install Adapter Cards, 16-Bit ISA Extension Pinout The following 16-bit pins are an extension of the 8-bit board layout and are used in conjunction with the 8-bit board standard pins. SBHE- LA23 LA22 LA21 LA20 LA19 LA18 LA17 MEMR- MEMW- SD08...
  • Page 48 28 + 5 volts 28 BALE 29 + 5 volts 29 + 5 volts 30 GND 30 OSC 31 LA10 31 GND Enterprise-III EISA VLB Motherboard User's Guide Continued Row E Row A 1 CMD# 1 IOCHK# 2 START# 2 D7...
  • Page 49 Step 10 Install Adapter Cards, 32-bit EISA Slot Pinout, cont'd Row H Row D 1 LA8 1 M16# 2 LA6 2 IO16# 3 LA5 3 IRQ 10 4 + 5 volts 4 IRQ 11 5 LA2 5 IRQ 12 6 Access Key 6 IRQ 15 7 D16 7 IRQ 14...

  • Page 50: Vl-Bus Cards

    VL-Bus Cards VL-Bus cards use the standard ISA/EISA connectors, but they also have an additional 166-pin MCA connector inline with the EISA expansion card sockets, as shown below. Enterprise-III EISA VLB Motherboard User's Guide...

  • Page 51: Vl-Bus

    Step 10 Install Adapter Cards, VL-Bus The first two expansion slots on the Enterprise-III EISA Local Bus motherboard are used for VL-Bus adapter cards. These VL-Bus bus mastering slots are labeled Local Bus1 (VL-BUS SLOT-7) and Local Bus2 (VL-BUS SLOT-8). These slots use the standard EISA/ISA sockets and an inline 64-pin extension connector to accomodate VL-Bus-compatible adapter cards.

  • Page 52: Step 11 Perform Initial Test And Configuration

    _ make sure there are no screws or other foreign material on the motherboard, _ plug the system into a surge-protected power strip, and _ make sure blank back panels are installed on the back of the chassis to minimize RF emissions. Enterprise-III EISA VLB Motherboard User's Guide Continued ADR23...
  • Page 53 Run the American Megatrends EISA Configuration Utility (ECU) to properly configure the system. The ECU and the appropriate motherboard .CFG and .OVR files are shipped on a floppy disk with all Enterprise-III EISA VL-Bus motherboards. The American Megatrends EISA Configuration Utility User's Guide provides complete details about running the ECU.

  • Page 54: Chapter 4 Amibios Power-On Self Test

    (I/O Port 80h). POST Phases When the system is powered on, AMIBIOS executes POST routines. The POST phases are: System Test and Initialization (test and initialize motherboards for normal operations) and System Configuration Verification (compare defined configuration with hardware actually installed).

  • Page 55: 8042 - Gate A20 Failure

    Beep Codes Fatal errors, listed below, are communicated through a series of audible beeps. All errors except Beep Code 8 are fatal. Fatal errors halt the boot process. In most cases, displayed errors allow the system to continue. AMIBIOS displayed errors are described on page 81.

  • Page 56: C: Drive Error

    CMOS Checksum Failure CMOS System Options Not Set CMOS Display Enterprise-III EISA VLB Motherboard User's Guide then... reseat the memory SIMMs or DIPs. If the system still beeps, replace the memory. reseat the keyboard controller chip. If it still beeps, replace the keyboard controller.

  • Page 57: Standard Cmos Setup

    AMIBIOS Displayed Messages, Error Message Type Mismatch CMOS Memory Size Mismatch CMOS Time & Date Not Set D: Drive Error D: drive failure Diskette Boot Failure Display Switch Not Proper DMA Error DMA #1 Error DMA #2 Error FDD Controller Failure HDD Controller Failure...

  • Page 58: Eisa Nmi Messages

    Expansion Board Disabled at Slot Expansion Board NMI at Slot n Fail-Safe Timer NMI Software Port NMI Enterprise-III EISA VLB Motherboard User's Guide Explanation The Checksum for EISA CMOS is incorrect. Replace the EISA Extended CMOS RAM battery. Read/Write error in extended CMOS RAM. The battery may need to be replaced.

  • Page 59: Bios Identification Strings

    Memory Parity Error at xxxxx I/O Card Parity Error at xxxxx DMA Bus Time-out BIOS Configuration Summary Screen AMIBIOS System Configuration (C) 1985-1992 American Megatrends Inc. Main Processor Numeric Processor Floppy Drive A: Floppy Drive B: Display Type: AMIBIOS Date:...

  • Page 60: Chapter 5 Amibios Setup

    Of course, the OEM can modify these keystroke combinations through AMIBCP. The above settings are the default settings. AMIBIOS Setup Parts AMIBIOS Setup is divided into three parts: • STANDARD CMOS SETUP, • ADVANCED CMOS SETUP, and • ADVANCED CHIPSET SETUP. Enterprise-III EISA VLB Motherboard User's Guide...
  • Page 61 Running AMIBIOS Setup, Continued STANDARD CMOS SETUP AMIBIOS STANDARD CMOS SETUP, discussed in Section 1 beginning on page 91, configures system components such as floppy drives, hard disk drives, monitor type, and the keyboard. ADVANCED CMOS SETUP ADVANCED CMOS SETUP, discussed in Section 3 beginning on page 95, configures the system password, keyboard typematic rate, boot sequence and speed, and enables system performance features, such as Fast Gate A20 support.

  • Page 62: Section 1 Running Amibios Setup

    Hit <DEL> if you want to run SETUP Press <Del> to run AMIBIOS Setup. Warning Message A warning is displayed when STANDARD CMOS SETUP, ADVANCED CMOS SETUP, or ADVANCED CHIPSET SETUP is selected. Press <Enter> to display the next screen. Enterprise-III EISA VLB Motherboard User's Guide...

  • Page 63: Amibios Setup Keys

    AMIBIOS Setup Keys Note: The default settings for <F5>, <F6>, and <F7> is always N. To execute these options, change the N to Y and press <Enter>. Chapter 5 AMIBIOS Setup Keystroke <Esc> Returns to previous screen. Move the cursor from one option to the next.

  • Page 64: Auto Configuration With Bios Defaults

    Use this option as a diagnostic aid if the system is erratic. Highlight this option, type Y , and press <Enter> to use the Power-On defaults. The following appears: Default values loaded. Press any key to continue. Enterprise-III EISA VLB Motherboard User's Guide...

  • Page 65: Write To Cmos And Exit

    AUTO DETECT HARD DISK When enabled, this option displays the parameters for IDE hard disk drives. You can accept or reject the parameters. If accepted, these parameters are displayed in STANDARD CMOS SETUP. The parameters are displayed as follows: Write to CMOS and Exit The selected options and new password (if any) are stored in CMOS RAM.

  • Page 66: Section 2 Standard Cmos Setup

    This option uses a 24 hour clock format, i.e., for PM numbers, add 12 to the hour. Enter 4:30 P.M. as 16:30:00. Enterprise-III EISA VLB Motherboard User's Guide and set the Date and Day by pressing <PgUp> and and set the time by pressing <PgUp> and <PgDn>.

  • Page 67: Using Auto Detect Hard Disk

    STANDARD CMOS SETUP Options, Hard Disk Drive C: and D: Use <PgUp or <PgDn> to select a hard disk drive type. Not Installed is used for diskless workstations and SCSI hard disk drives. Type 47 can be used for both hard disks C: and D:, and is primarily for IDE drives.

  • Page 68: Hard Disk Drive Types

    STANDARD CMOS SETUP Options, Hard Disk Drive Types Type Cylinders Enterprise-III EISA VLB Motherboard User's Guide Continued Heads Write Precompensation 65535 65535 65535 65535 65535 65535 65535 65535 1024 65535 65535 65535 1024 65535 1024 65535 1024 1024 1024 65535...

  • Page 69: Floppy Drive A And Floppy Drive B

    STANDARD CMOS SETUP Options, Floppy Drive A and Floppy Drive B: Use <PgUp or <PgDn> to select a setting. The settings are 360 KB 5¼ inch , 1.2 MB 5¼ inch , 720 KB 3½ inch , 1.44 MB 3½ inch , 2.88 MB 3½ inch, or Not Installed , which could be used for diskless workstations.

  • Page 70: Section 3 Advanced Cmos Setup

    The ADVANCED CMOS SETUP options are shown on the following screen. Use the scroll through the options. ╔═════════════════════════════════════════════════════════════════════════════╗ ║ AMIBIOS SETUP PROGRAM – ADVANCED CMOS SETUP ║ (C) 1992 American Megatrends, Inc. All Rights Reserved ╠══════════════════════════════════════╦══════════════════════════════════════╣ ║ Typematic Rate Programming : Enabled ║ ║ Typemati ║ c Rate Delay(Msec) : 500 ║...

  • Page 71: Typematic Rate Programming, Typematic Rate Delay, And Typematic Rate

    ADVANCED CMOS SETUP Options Typematic Rate Programming, Typematic Rate Delay, and Typematic Rate Typematic Programming enables or disables the following two options. The BIOS default is Enabled. The Power-On default is Disabled. Typematic Rate Delay (250, 500, 750 or 1,000 milliseconds) and Typematic Rate (6, 8, 10, 12, 14, 16, 24, or 30 characters per second) control the speed at which a keystroke is repeated.

  • Page 72: System Boot Up Sequence

    This option enables the password feature. The settings are Setup — AMIBIOS Setup is password- protected or Always (a user password prompt appears every time the system is turned on). See page 104 for more information on passwords. The BIOS Setup and Power-On default is Setup. Enterprise-III EISA VLB Motherboard User's Guide...

  • Page 73: Video Rom Shadow

    ADVANCED CMOS SETUP, Continued Video ROM Shadow C000,32K This option enables shadowing of 32 KB of Video ROM at C000h – C7FFh to system RAM. The settings are Enabled or Disabled. The BIOS Default is Enabled. The Power-On Default is Disabled. Adaptor ROM Shadow C800,32K Adaptor ROM Shadow D000,32K Adaptor ROM Shadow D800,32K...

  • Page 74: Boot Sector Virus Protection

    The following is displayed if any program attempts to format any cylinder, head, or sector of any hard disk drive via the BIOS INT 13 Hard Disk Drive Service: The BIOS and Power-On default is Disabled. Enterprise-III EISA VLB Motherboard User's Guide Continued Boot Sector Write!!!

  • Page 75: Section 4 Advanced Chipset Setup

    ADVANCED CHIPSET SETUP is shown below. Use the options. ╔═════════════════════════════════════════════════════════════════════════════╗ ║ AMIBIOS SETUP PROGRAM – ADVANCED CHIPSET SETUP ║ (C) 1992 American Megatrends, Inc. All Rights Reserved ╠══════════════════════════════════════╦══════════════════════════════════════╣ ║ Local Bus : Present ║ Cache Write Back : Enabled ║ Non-Cacheable Area 1 : DRAM ║...

  • Page 76: Adapter Card

    256 KB, 512 KB, 1 MB, 2 MB, or 4 MB. The BIOS and Power-On Default is 0 KB. Non-Cacheable Area 1 Start This option sets the start of the non-cacheable memory block. The settings are Disabled. The BIOS and Power-On default is Disabled. Enterprise-III EISA VLB Motherboard User's Guide...

  • Page 77: F000 Shadow Ram Cacheable

    ADVANCED CHIPSET SETUP Options, Continued C000 Shadow RAM Cacheable The settings are Enabled (the 32 KB address segment at C000h can be cached in the 8 KB 80486 internal cache) or Disabled. The BIOS and Power-On Defaults are Disabled. This internal cache memory cannot be write-protected.

  • Page 78: Advanced Chipset Setup

    The settings are 3 BCLKs, 4 BCLKs, 5 BCLKs, or 11 BCLKs. The setting of this option is related to the processor speed, as shown in the following table. The BIOS and Power-On default is 11 BCLKs. Enterprise-III EISA VLB Motherboard User's Guide Continued If the CPU type and choose...

  • Page 79: Section 5 Amibios Password Support

    Section 5 AMIBIOS Password Support AMIBIOS Setup has an optional password feature. The system can be configured so that all users must enter a password every time the system boots or when Setup is executed. Setting a Password The password check option is enabled in ADVANCED CMOS SETUP (see page 97) by choosing either Always (the password prompt appears every time the system is powered on) or Setup (the password prompt appears only when AMIBIOS Setup is run).

  • Page 80: Changing A Password

    Remember the Password Keep a record of the new password when the password is changed. If you forget the password, remove the computer cover, and replace the Real Time Clock/CMOS RAM chip. The reconfigure the system. Enterprise-III EISA VLB Motherboard User's Guide...

  • Page 81: Section 6 Hard Disk Utility

    Section 6 Hard Disk Utility AMIBIOS includes three hard disk utilities: Utility Utility Utility Utility Hard Disk Format Performs a low level format of the hard drive(s). Read the system or hard disk drive documentation to find out if the hard disk is preformatted.

  • Page 82: When To Use Amibios Hard Disk Utilities

    Installing a used hard disk drive. When Hard Disk Diagnostics is selected, the following screen appears. Select an option and press <Enter>. Enterprise-III EISA VLB Motherboard User's Guide Conditions The hard disk drive None manufacturer provided a list of...

  • Page 83: Hard Disk Format Utility

    Hard Disk Format Utility The Hard Disk Format utility destroys all hard disk data. Back up the data on the hard disk before running this utility. This routine does not work on IDE or SCSI drives. Use Hard Disk Format to integrate a new hard disk to the system, or to reformat a used hard disk which has bad tracks as a result of aging or poor handling.

  • Page 84: Hard Disk Format Utility

    Bad Track Edit Menu. Type Y and press <Enter>. A warning screen appears. Press any key to continue. Data on the hard disk drive will be irrevocably lost. Enterprise-III EISA VLB Motherboard User's Guide Continued Warning...

  • Page 85: Auto Interleave Utility

    Auto Interleave Utility The Auto Interleave utility destroys hard disk data. Back up the data on the hard disk before running this utility. The Auto Interleave utility calculates the optimum interleave factor through trial and error by measuring the transfer rate for four different interleave values. To determine the best interleave factor, the system formats a portion of the hard disk for each transfer rate calculated.
  • Page 86 The cursor is on Proceed. The warning screen appears. Press <Enter> to stop. The main Hard Disk Utility screen appears. Type Y and press <Enter> to perform the hard disk drive analysis. Enterprise-III EISA VLB Motherboard User's Guide...

  • Page 87: Hard Disk Utility Error Messages

    Hard Disk Utility Error Messages Initialization Errors Chapter 5 AMIBIOS Setup Message No Hard Disk There is no hard disk drive in the system but Hard Installed Disk Utility was selected. FATAL ERROR Bad No response from the hard disk, or the hard disk is Hard Disk not repairable.

  • Page 88: Hard Disk Utility Error Messages

    Hard Disk Utility Error Messages, Operation Errors Enterprise-III EISA VLB Motherboard User's Guide Continued Message Address Mark Not The address mark (initial address) on the hard disk Found could not be found. Attachment Failed to No response from the hard disk drive.

  • Page 89: Appendix A Boot Block Bios Utility

    EPROM is that the information contained in it can be easily enhanced or updated via code on a floppy disk. The Boot Block BIOS utility updates the Flash EPROM. If the system AMIBIOS for the Enterprise-III motherboard needs to be updated, American Megatrends will provide a BIOS update file and the Boot Block BIOS Utility.
  • Page 90 S68P.ROM contains the updated main BIOS code. It must be present in the root directory of the floppy disk before the onboard Flash EPROM can be reprogrammed. The file that has the main BIOS code must be named S68P.ROM. Enterprise-III EISA VLB Motherboard User's Guide...
  • Page 91 J2 on the Enterprise-III motherboard is the Force Boot jumper, next to the keyboard DIN plug. The following graphic shows the Enterprise-III EISA VLB motherboard. J2 is in the top right corner. Short J2 to reprogram the system BIOS with the new BIOS file on the floppy disk.
  • Page 92 A CPU reset is generated (the system reboots). Make sure the CPU. you remove the shorting link from J2 at this point. 10 Manually reboot the Reboot the system. system. Error Beep Codes Enterprise-III EISA VLB Motherboard User's Guide Continued Action Expected behavior...
  • Page 93 The error beeps are arranged in a coded sequence and have different meanings depending on when they occur. The following list describes the error beep codes and when they can occur. Step Beeps — None Successful completion. Continuous Single There is no floppy disk in Drive A:. Beep Five Beeps S68P.ROM is not present in the root directory of the...

  • Page 94: Boot Block Bios

    Disable internal cache memory. Enable and reset flash memory. Detect the flash type if present. Flash memory not detected. Begin erasing flash blocks. Begin programming flash blocks. Flash programming successful and the system reboots, if possible. Enterprise-III EISA VLB Motherboard User's Guide Description...

  • Page 95: Appendix B Temperature And Power Considerations

    Temperature specifications vary with the CPU frequency. Frequency 20 or 25 MHz 33 MHz 50 MHz Humidity The recommended humidity range for operation of the American Megatrends Enterprise-III EISA VL-Bus motherboard is 20% to 80% non-condensing. Heat Airflow over Airflow over Sink...

  • Page 96: Power Considerations

    44 Amps at +5V with a 220 Watt power supply. Power Source Three power connectors (P1, P2, and P3) are provided on the Enterprise-III EISA motherboard. These connectors provide seven +5V connects. Each is rated at approximately 5 Amps. The total power consumption for all three connectors is approximately 35 Amps.

  • Page 97: Appendix C Heat Dissipation

    These CPUs can dissipate 5 – 8 watts of power. Since this power is concentrated in a small area, it is necessary to remove the heat generated by this power consumption. For this reason we have supplied a heat sink with all American Megatrends motherboards that have a 50 MHz 80486DX/DX2 or 66 MHz 80486DX2 CPU.
  • Page 98 Install a fan to increase the air flow over the CPU. Some power supplies may have larger or more powerful fans. • Install a different heat sink with a greater surface area. • Different case styles may have better ventilation allowing for more air-flow over the CPU. Enterprise-III EISA VLB Motherboard User's Guide Continued...

  • Page 99: Appendix D Eisa Configuration Worksheets

    EISA adapter card in the system to simplify the EISA configuration process. These worksheets are helpful used in conjunction with the American Megatrends EISA Configuration Utility (ECU) when configuring an EISA system with many EISA adapter cards.
  • Page 100 ___ 5 Data size ___ 8-bit Timing: ___ Compatible ___ Type B ___ Type C Share: ___ Yes Enterprise-III EISA VLB Motherboard User's Guide ___ No ___ 32-bit ___ No ___ 16-bit ___ No ___ ROM ___ Virtual ___ Other...
  • Page 101 cont'd EISA Slot 1, Interrupt Description Interrupt Description Interrupt Description Interrupt Description Edge-Triggered Interrupts: Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9 ___ IRQ10 ___ IRQ11 ___ IRQ12 ___ IRQ14 Share: ___ Yes Level-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4...
  • Page 102 ___ 0 Data size ___ 8-bit Timing: ___ Compatible ___ Type B ___ Type C Share: ___ Yes Enterprise-III EISA VLB Motherboard User's Guide ___ No ___ 32-bit ___ No ___ 16-bit ___ No ___ ROM ___ Virtual ___ Other...
  • Page 103 cont'd EISA Slot 2, Interrupt Description Interrupt Description Interrupt Description Interrupt Description Edge-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9 ___ IRQ10 ___ IRQ11 ___ IRQ12 ___ IRQ14 Share: ___ Yes Level-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4...
  • Page 104 ___ 5 Data size ___ 8-bit Timing: ___ Compatible ___ Type B ___ Type C Share: ___ Yes Enterprise-III EISA VLB Motherboard User's Guide ___ No ___ 32-bit ___ No ___ 16-bit ___ No ___ ROM ___ Virtual ___ Other...
  • Page 105 cont'd EISA Slot 3, Interrupt Description Interrupt Description Interrupt Description Interrupt Description Edge-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9 ___ IRQ10 ___ IRQ11 ___ IRQ12 ___ IRQ14 Share: ___ Yes Level-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4...
  • Page 106 ___ 0 Data size ___ 8-bit Timing: ___ Compatible ___ Type B ___ Type C Share: ___ Yes Enterprise-III EISA VLB Motherboard User's Guide ___ No ___ 32-bit ___ No ___ 16-bit ___ No ___ ROM ___ Virtual ___ Other...
  • Page 107 cont'd EISA Slot 4, Interrupt Description Interrupt Description Interrupt Description Interrupt Description Edge-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9 ___ IRQ10 ___ IRQ11 ___ IRQ12 ___ IRQ14 Share: ___ Yes Level-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4...
  • Page 108 ___ 0 Data size ___ 8-bit Timing: ___ Compatible ___ Type B ___ Type C Share: ___ Yes Enterprise-III EISA VLB Motherboard User's Guide ___ No ___ 32-bit ___ No ___ 16-bit ___ No ___ ROM ___ Virtual ___ Other...
  • Page 109 EISA Slot 5, cont'd Interrupt Description Interrupt Description Interrupt Description Interrupt Description Edge-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9 ___ IRQ10 ___ IRQ12 Share: ___ Yes ___ No Level-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9...
  • Page 110 ___ 0 Data size ___ 8-bit Timing: ___ Compatible ___ Type B ___ Type C Share: ___ Yes Enterprise-III EISA VLB Motherboard User's Guide ___ No ___ 32-bit ___ No ___ 16-bit ___ No ___ ROM ___ Virtual ___ Other...
  • Page 111 EISA Slot 6, cont'd Interrupt Description Interrupt Description Interrupt Description Interrupt Description Edge-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9 ___ IRQ10 ___ IRQ12 Share: ___ Yes ___ No Level-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9...
  • Page 112 ___ 0 Data size ___ 8-bit Timing: ___ Compatible ___ Type B ___ Type C Share: ___ Yes Enterprise-III EISA VLB Motherboard User's Guide ___ No ___ 32-bit ___ No ___ 16-bit ___ No ___ ROM ___ Virtual ___ Other...
  • Page 113 cont'd EISA Slot 7, Interrupt Description Interrupt Description Interrupt Description Interrupt Description Edge-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9 ___ IRQ10 ___ IRQ11 ___ IRQ12 ___ IRQ14 Share: ___ Yes Level-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4...
  • Page 114 ___ 5 Data size ___ 8-bit Timing: ___ Compatible ___ Type B ___ Type C Share: ___ Yes Enterprise-III EISA VLB Motherboard User's Guide ___ No ___ 32-bit ___ No ___ 16-bit ___ No ___ ROM ___ Virtual ___ Other...
  • Page 115 cont'd EISA Slot 8, Interrupt Description Interrupt Description Interrupt Description Interrupt Description Edge-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4 ___ IRQ5 ___ IRQ6 ___ IRQ7 ___ IRQ9 ___ IRQ10 ___ IRQ11 ___ IRQ12 ___ IRQ14 Share: ___ Yes Level-Triggered Interrupts Interrupt line used: ___ IRQ3 ___ IRQ4...
  • Page 116 Enterprise-III EISA VLB Motherboard User's Guide...

  • Page 117: Index

    Index...
  • Page 118 EISA Configuration Worksheets 90 EISA Expansion Slots 34, 36, 37 ESDI BIOS 63 External Cache Memory 62 F000 Shadow RAM Cacheable 68 Figures Attaching power connectors 26 Auto Detect Hard Disk Screen 55 Auto Interleave Utility 76 Enterprise-III EISA VLB Motherboard User's Guide...
  • Page 119 Index, Continued Cutting keys on power connectors 26 D5 Turbo LED connector 33 EISA and ISA edge connectors 35 Hard Disk Format Utility screen 74 Hard Disk Utility Main Menu 73 Height restrictions 5 Installing Math Coprocessor 23 Installing SIMMs 20 Installing the motherboard 24 Installing Upgrade Processor 23 J10 Keyboard lock connector 32...
  • Page 120 Shadow RAM Write Protection 64 SIMM 20 Parameters 20 Specifications 20 SIMMs 18 Installing 19 Part numbers 19 Speaker Cable Connector 31 Specifications 6 SRAM Type 8 STANDARD CMOS SETUP 56 SW1 15 Switch and Jumper Options 15 Enterprise-III EISA VLB Motherboard User's Guide...
  • Page 121 Index, Continued Switches SW1 15 System ROM Shadow F000,64K 64 Table 80486 Operating Temperatures 86 Adapter Cards 34 AMIBIOS Setup keys 53 BBS Phone numbers vii Beep code troubleshooting 46 Beep codes 45 BIOS error messages 46 BIOS error reporting 43 BIOS Hard Disk Utilities 72 BIOS ID strings 49 BIOS System Configuration 49...

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