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American Megatrends, Inc.Series 16
Enterprise-II80486 EISAMotherboardUser's Guide
MAN-61610/21/92
© Copyright 1985-2010 American Megatrends, Inc.All rights reserved.American Megatrends, Inc.5555 Oakbrook Parkway, Building 200,Norcross, GA 30093
This publication contains proprietary information which is protected bycopyright. No part of this publication may be reproduced, transcribed,stored in a retrieval system, translated into any language or computerlanguage, or transmitted in any form whatsoever without the priorwritten consent of the publisher, American Megatrends, Inc.
Limited Warranty
Buyer agrees if this product proves to be defective, that AmericanMegatrends, Inc. is only obligated to replace or refund the purchaseprice of this product at American Megatrend's discretion according tothe terms and conditions on the Enterprise-II motherboard warrantycard. American Megatrends shall not be liable in tort or contract for anyloss or damage, direct, incidental or consequential. Please see theWarranty Registration Card shipped with this product for full warrantydetails.
Limitations of Liability
In no event shall American Megatrends be held liable for any loss,expenses, or damages of any kind whatsoever, whether direct, indirect,incidental, or consequential, arising from the design or use of thisproduct or the support materials provided with the product.
Trademarks
Fujitsu is a registered trademark of Fujitsu America, Inc.IBM, AT, VGA, OS/2, PS/2, and EGA are registered trademarks of International Business MachinesCorporation. XT and CGA are trademarks of International Business Machines Corporation.Intel and i486 are registered trademarks of Intel Corporation.MS-DOS, Xenix, and Microsoft are registered trademarks of Microsoft Corporation.Mitsubishi is a registered trademark of Mitsubishi Electronics of America.NEC is a registered trademark of NEC Corporation.Oki is a registered trademark of Oki America, Inc.Siemens is a trademark of Siemens Corporation.Toshiba is a registered trademark of Kabushiki Kaisha Toshiba.Unix is a registered trademark of American Telephone and Telegraph Company Bell Laboratories.Weitek is a trademark of Weitek, Inc.
Revision History
March 3, 1992 Added documentation for Rev Gfeatures.
American Megatrends Enterprise-II Motherboard User's Guide
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Table of Contents
Chapter 1 System Overview............................................................................ 1
Chapter 2 Installation ...................................................................................... 9Unpacking the Motherboard............................................................... 9Installation Steps .............................................................................. 11
Step 1 Set Switch and Jumper Options............................. 12Step 2 Install Memory ....................................................... 15Step 3 Install Coprocessor................................................ 19Step 4 Install the Motherboard .......................................... 20Step 5 Connect the Power Supply .................................... 21Step 6 Connect the Keyboard Cable ................................. 25Step 7 Connect the Mouse................................................ 25Step 8 Connect Cables ..................................................... 26Step 9 Install Adapter Cards ............................................. 30Step 10 Test and Configure .............................................. 36
Chapter 3 BIOS Power-On Self Test (POST)................................................. 39POST Phases ................................................... 39BIOS Error Reporting ........................................ 39
Beep Codes ...................................................................... 40AMIBIOS Displayed Error Messages ................................ 41EISA Error Messages ....................................................... 43ISA BIOS NMI Messages.................................................. 43EISA BIOS NMI Error Messages ...................................... 43BIOS Configuration Summary Screen............................... 44POST Memory Test .......................................................... 44
Chapter 4 AMIBIOS Setup.............................................................................. 45Section 1 Running AMIBIOS Setup .................................................. 47
Setup Key Use.................................................................. 48Auto Configuration With BIOS Defaults............................. 49Auto Configuration With Power-On Defaults ..................... 50Write to CMOS and Exit.................................................... 50Do Not Write to CMOS RAM and Exit ............................... 50
Section 2 STANDARD CMOS SETUP.............................................. 51Date And Day Configuration.............................. 51Hard Disk Configuration .................................... 52Hard Disk Parameter Table............................... 53Monitor.............................................................. 54Keyboard........................................................... 54
Section 3 ADVANCED CMOS SETUP ............................................. 55Typematic Rate Programming, Rate,
and Delay.......................................... 56Extended Memory Test ..................... 57
Memory Test Tick Sound ................................. 57Hit <DEL> Message Display ............................ 57System Boot Up Num Lock .............................. 59
Preface
iv
Table of Contents, Continued
Chapter 4 AMIBIOS Setup, cont'dNumeric Processor .......................................... 59Floppy Drive Seek At Boot ............................... 59System Boot Up Sequence .............................. 59Fast Gate A20................................................... 59
Password Check Option.................... 60Video or Adaptor ROMShadow ............................................ 60
Section 4 AMIBIOS Password Support ............................................. 61Section 5 Hard Disk Utility ................................................................ 63
When to Use AMIBIOS Hard Disk Utilities ........................ 64Hard Disk Format Utility .................................................... 65Auto Interleave Utility ........................................................ 67Hard Disk Utility Error Messages ...................................... 69
Appendix A 32-Bit Enterprise-II Memory Card.............................................. 71
Appendix B EISA Configuration Worksheets ............................................... 73
Appendix C Heat Dissipation......................................................................... 91
Index................................................................................................................ 93
American Megatrends Enterprise-II Motherboard User's Guide
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Preface
To the OEM
Thank you for purchasing the high performance Enterprise-II80486 EISA motherboard. This product is a state of the art80486-based motherboard that includes the famous AMIBIOS. Itis assumed that you have also licensed the rights to use theAmerican Megatrends documentation for the Enterprise-II.
This manual was written for the OEM to assist in the properinstallation, and operation of the Enterprise-II motherboardand AMIBIOS. This manual is not meant to be read by thecomputer owner who purchases a computer with the Enterprise-II motherboard. It is assumed that you, the computermanufacturer, will use this manual as a sourcebook ofinformation, and that parts of this manual will be includedin the computer owner's manual.
Technical Support
If an Enterprise-II motherboard fails to operate asdescribed or you are in doubt about a configuration option,please call technical support at 404-246-8600.
Acknowledgments
This manual was written by Robert Cheng and Paul Narushoff.The writers gratefully acknowledge the assistance of RexWade and Sukha Ghosh.
New in Series 16 Revision G
New Jumpers
There are several additional jumpers: J35, J36, andJ37. These jumpers select the processor type andspeed.
Support for Additional Processors
Rev G of the Enterprise-II now support the Intel80486SX, 80487SX, P23T, P24, and the 80486DX.
Support for Additional Processor Speeds
Preface
vi
Rev G of the Enterprise-II will now support thefollowing processor speeds:
80486DX 25, 33, and 50 MHz80486SX 25 MHz80487SX 25 MHz
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New in Series 16 Revision G, Continued
Selecting the Processor Speed
A table on page 14 documents the jumper settings forselecting the processor speed.
Selecting the Processor Type
A table on page 14 describes how to set jumpers to selectthe processor speed.
J22 Name Change
The name of J22 has been changed to Interrupt Latch Disable.This jumper is always shorted.
American Megatrends BBS
The American Megatrends BBS permits OEMs, VARs, and systemintegrators to access technical information aboutmotherboard and BIOS products. Product Engineering ChangeNotices, Tech Tips, Technical Notes, and technical manualsare available on the BBS.
Data Transmission Rates
The BBS automatically handles modems with data transmissionrates from 1,200 to 14,400 bps. If using an HST modem, call404-246-8780. If using a non-HST modem, call 404-246-8782.
BBS Phone Numbers
The following table lists the characteristics of the BBSphone numbers. The BBS requires no parity, 8 data bits, and1 stop bit.
Phone Number Characteristics
404-246-8780 Supports HST and v.42.
404-246-8781 Supports HST and v.42.
404-246-8782 Dual standard. Can handle 2400 or 9600 bps. Supports v.32 andv.42. Can handle up to 14,400 baud.
404-246-8783 Supports v.32 and v.42.
American Megatrends Enterprise-II Motherboard User's Guide
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Chapter 1
System Overview
The American Megatrends Series 16Enterprise-II is an EISA (ExtendedIndustry Standard Architecture)motherboard. It is approximately 13.8inches wide by 12 inches long (identicalin size to a standard IBM AT motherboardwith similar mounting hole locations). Thefollowing graphic illustrates thedimensions of the Enterprise-IImotherboard and identifies the heightrestrictions.
Chapter 1 - System Overview
2
Description
Processor Type and Speed
The Enterprise-II EISA motherboard comeswith either an 80486DX operating at 25,33, or 50 MHz or an 80486SX operating at25 MHz. The Enterprise-II also supportsfuture Intel processors and upgradableprocessors. 80486SX-equipped Enterprise-IImotherboards support an 80487SX operatingat 25 MHz.
Heat Sink for 50 MHz CPUs
All Enterprise-II EISA motherboards with50 MHz 80486DX CPUs are also equipped witha heat sink to help dissipate theadditional heat.
Processor Speed
All Enterprise-II motherboards have twoclock speeds: high or low. The high clockspeed is factory-set to 25, 33, or 50 MHz.
The low clock speed is achieved by addingthe appropriate number of software delays,depending on the speed of the processorused on the motherboard, and emulates anIBM AT running at 8 MHz.
Speed selection is through the turboswitch or the keyboard (<Ctrl> <Alt> <+>or <Ctrl> <Alt> <->).
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Description, Continued
Cache Memory
The Enterprise-II supports 128 KB ofdirect mapped, write-through externalcache memory. The Intel 80486 processorshave 8 KB of internal cache.
All system memory can be cached. The cacheread has 0 wait states. Burst mode issupported. Cache memory is enabled anddisabled through the keyboard: <Ctrl><Alt> <Shift> <+> enables cache and <Ctrl><Alt> <Shift> <-> disables it.
Main Memory
The Enterprise-II motherboard supports upto 32 MB of onboard memory. It alsosupports up to 64 MB of additionaloffboard system memory on the 32-bitmemory expansion slot.
The Enterprise-II supports up to 96 MB ofsystem RAM. Up to 4 gigabytes of memoryare supported on the EISA bus.
SIMMs
The Enterprise-II supports 1 MB x 9 or 4MB x 9 fast page mode SIMMs operating at70 ns (RAS access time), fast page mode at25, 33, and 50 MHz.
Shadow RAM
The Enterprise-II system BIOS is alwaysshadowed. The video BIOS is shadowedthrough AMIBIOS Setup. Adaptor ROM BIOS isalso shadowed via AMIBIOS Setup.
Chapter 1 - System Overview
4
Description, Continued
BIOS
The Enterprise-II has a 128 KB EISAAMIBIOS located at E000–FFFFh with built-in Setup, hard disk drive diagnostics, anduser-definable hard disk drive types. TheEISA AMIBIOS allows you to bypass errormessages for missing video, keyboard, orfloppy drives to facilitate the buildingof file server systems
CMOS RAM
The Enterprise-II has 8 KB of nonvolatileSRAM with built-in battery backup for EISAconfiguration. The battery is on the CMOSRAM/RTC chip itself.
Real Time Clock
The Enterprise-II has a real time clockand CMOS RAM with built-in battery backupfor ISA BIOS Setup. The battery is on theCMOS/RTC chip.
Math Coprocessor
The Enterprise-II has a socket for anoptional Weitek® 4167 numeric coprocessor.
EISA Integrated Peripheral Controller
The Enterprise-II has an Intel 82357 EISAIntegrated System Peripheral Controller.
American Megatrends Enterprise-II Motherboard User's Guide
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Description, Continued
Seven DMA Channels
The Enterprise-II has seven DMA channels.In accordance with the EISAspecifications, any DMA channel may beprogrammed for 8, 16, or 32-bit DMA devicesize and ISA compatible, type A, type B,or burst type C modes.
Fifteen Interrupt Levels
The Enterprise-II has 15 hardwareinterrupt levels. Of course, NMIs takeprecedence over the following hardwareinterrupts.
Priority Label Typical Interrupt Source
1 IRQ 0 Interval Timer 1, Counter 0 OUT
2 IRQ 1 Keyboard
3-10 IRQ 2 Used internally for IRQ 8 through IRQ 15
3 IRQ 8 Real-TIme-Clock
4 IRQ 9 EISA bus
5 IRQ 10 EISA bus
6 IRQ 11 EISA bus
7 IRQ 12 Mouse on EISA bus
8 IRQ 13 Coprocessor Error
9 IRQ 14 EISA bus (Hard disk drive controller)
10 IRQ 15 EISA bus
11 IRQ 3 EISA bus (Serial Port 2)
12 IRQ 4 EISA bus (Serial Port 1)
13 IRQ 5 EISA bus (Parallel Port 2)
14 IRQ 6 EISA bus and floppy disk controller
15 IRQ 7 EISA bus (Parallel Port 1)
Chapter 1 - System Overview
6
Description, Continued
Timer Features
The Enterprise-II has five programmable16-bit counter/timers.
System Arbiter
The Enterprise-II has standard EISAarbitration features.
Refresh Generation
The Enterprise-II has a refresh generationfeature.
I/O Capability
The Enterprise-II accesses 32-, 16-, 8-bitmemory devices and 32-, 16-, 8-bit I/Odevices on the EISA bus.
EISA Bus
The EISA Bus in the Enterprise-II has asystem clock that is generated by the EISAbus clock (BCLK) and operates at 8.33 MHz.
I/O Slots
The Enterprise-II has one 32-bitproprietary memory card slot and seven 32-bit EISA bus slots (fully compatible withISA adapter cards). It also has one 8-bitXT-compatible slot. If the memory slot isused, the 8-bit slot cannot be used.
American Megatrends Enterprise-II Motherboard User's Guide
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Description, Continued
I/O Address Space
The Enterprise-II uses I/O addresses x100hthrough x3FFh for ISA compatible I/O (x =a "don't care" character which does notaffect mapping location. For example, I/Oport addresses 0100h, 1100h, 2100h, and3100h map to the same location).
The Enterprise-II also uses the followingEISA I/O port addresses:
• s000h through s0FFh for EISAexpansion slot• s400h through s4FFh for EISAexpansion slot• s800h through s8FFh for EISAexpansion slot• sC00h through sCFFh for EISA
expansion slot
(s = EISA bus slot number, s = 0 for motherboard)
Addresses
The Enterprise-II uses 32-bit memoryaddresses to access 4 gigabytes of memoryaddress space on the EISA expansion slots.
I/O Channel Check
The Enterprise-II supports the use of theI/O channel check to generate NMIs.
Chapter 1 - System Overview
8
Description, Continued
I/O Wait State Generation
The Enterprise-II has an open busstructure (allowing multiplemicroprocessors to share the systemresources, including memory). TheEnterprise-II supports refresh of systemmemory from channel microprocessors.
Keyboard
The Enterprise-II uses a 5-pin IBM AT-compatible DIN connector and has akeyboard lock to prevent unauthorizedaccess.
Mouse
The Enterprise-II has a 6-pin IBM PS/2®-compatible mini-DIN connector.
Speaker
The Enterprise-II has a standard speakerattachment.
American Megatrends Enterprise-II Motherboard User's Guide
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Chapter 2
Installation
Unpacking the Motherboard
Step Action
1 Inspect the cardboard carton for obvious damage. If damaged, callTechnical Support at 404-236-8600.
Leave the Enterprise-II motherboard in its original packing.
2 Perform all unpacking and installation procedures on a groundconnected anti-static mat. The operator should wear an anti-staticwristband, grounded at the same point as the anti-static mat. Oruse a sheet of conductive aluminum foil grounded through a 1megohm resistor instead of the anti-static mat. Similarly, a strip ofconductive aluminum foil wrapped around the wrist and groundedthrough a 1 megohm resistor serves the same purpose as thewristband.
3 Inside the carton, the Enterprise-II motherboard is packed in ananti-static bag, and sandwiched between sheets of sponge.Remove the sponge and remove the anti-static bag. Place theEnterprise-II motherboard on a grounded anti-static surfacecomponent side up. Save the original packing material in case ofreshipment.
4 Inspect the motherboard for damage. Press down on all ICsmounted in sockets to verify proper seating. Do not apply power tothe motherboard if it has been damaged.
5 If the motherboard is undamaged, it is ready to be installed.
Chapter 2 - Installation
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American Megatrends Enterprise-II Motherboard User's Guide
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Installation Steps
The steps for assembling a system thatuses the 80486 Enterprise-II motherboardand CPU card are shown in the followingtable. Each step is discussed in detail inthe following pages.
Step Action Turn to
1 Set switch and jumper options Page 12
2 Install memory Page 15
3 Install coprocessors Page 19
4 Install motherboard Page 21
5 Connect the power supply Page 22
6 Connect the keyboard Page 26
7 Connect the mouse Page 26
8 Connect cables Page 27
9 Install adapter cards Page 33
10 Test and configure Page 40
WarningThe Enterprise-II motherboard contains sensitive electroniccomponents which can be easily damaged by static electricity.Follow the instructions carefully to ensure correct installationand to avoid static damage.
Chapter 2 - Installation
12
Step 1 Set Switch and Jumper Options
Set all user-configurable jumpers andswitches and install coprocessors beforeinstalling the motherboard in the chassis.There are two user-configurable switchesand five jumpers.
SW
SW is a dual 2-bit DIP switch. SW-1 isused for manufacturing diagnostics. Themotherboard is shipped with this switchOff. The switch should remain Off.
The COL/MONO (SW-2) switch sets the typeof video display adapter card in thesystem. This switch is factory-set to Off,for a monochrome display adapter (MDA ).Set On for a color graphics adapter (CGA).This switch has no effect on EGA and VGAadapters.
J12 Floppy Disk Type
J12 is a 3 pin single-inline berg. Thisjumper selects the floppy disk drive typewhen using the onboard floppy controller.Some 3½" drives (PS/2 compatible) haveinverted DENSEL (density select) signals.
Short Pins 1-2 for normal XT and AT styledrives (default). Short Pins 2-3 for PS/2compatible drives (inverted DENSEL). Whenusing PS/2-compatible drives, resistornetwork RN13 must be changed from 150Ω to10KΩ.
American Megatrends Enterprise-II Motherboard User's Guide
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Step 1 Set Switch and Jumper Options,Continued
J27 EBC 25/33 MHz Select
J27 is a three-pin berg. Short pins 1-2 toselect 25 or 50 MHz operation. Leave J27open to select 33 MHz operation.
J35 CLKEBC Select
J35 is a three-pin berg that selectsnormal or /2 operation. Short pins 2-3 ifthe system has a 25 or 33 MHz 80486DX/SX.Short pins 1-2 only if the system has a 50MHz processor.
J36 NMI Pin Select
J36 is a four-pin berg that selectsprocessor type. Short pins 2-3 if thesystem has an 80486SX. Short pins 1-2 and3-4 if the system has an 80487SX, P24,P23T, or 80486DX.
J22 Interrupt Latch Disable
This jumper is always shorted.
J37 FERR# Pin Select
This jumper selects processor type. Shortpins 2-3 if an 80487SX is used. Leave J37open if an 80486SX is used. Short pins 1-2if an 80486DX or P24 is used.
Chapter 2 - Installation
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Step 1 Set Switch and Jumper Options,Continued
Selecting the Processor Speed
Processor Speed J2 * J27 EBC25/33 MHzSelect
J35 CLKEBCSelectNormal or /2
80486DX 25 MHz Short pins 1-2
Short pins 1-2
Short pins 2-3
33 MHz Short pins 1-2
Open Short pins 2-3
50 MHz Short pins 1-2
Short pins 1-2
Short pins 1-2
80486SX 25 MHz Short pins 1-2
Short pins 1-2
Short pins 2-3
80487SX 25 MHz Short pins 1-2
Short pins 1-2
Short pins 2-3
* Leave J2 open if the processor is aB6 or earlier version of an i486.
Selecting the Processor Type
Processor Type J36 NMI Pin Select J37 FERR# Pin Select
80486SX Short pins 2-3 Open
80487SX Short pins 1-2 and Pins 3-4
Short pins 2-3
80486DX, P24 Short pins 1-2 and Pins 3-4
Short pins 1-2
American Megatrends Enterprise-II Motherboard User's Guide
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Step 2 Install Memory
The main memory subsystem on theEnterprise-II motherboard consists of two32-bit memory banks of 4 SIMM socketseach. Both banks house SIMMs (SingleIn-line Memory Module) DRAM packages. Youcan use 1 MB or 4 MB x 9 bit SIMMs.
Motherboard Memory Configurations
The 80486 Enterprise-II supports 4 MB, 8MB, 16 MB, and 32 MB memory configurationson the motherboard.
Selecting SIMMs
The table on the following page has SIMMpart numbers. If using SIMMs other thanthese, be sure they meet the followingspecifications:
Parameter Specification
Page Mode FAST
Refresh CAS before RAS
tCAC ≤ 20 ns
tRAC ≤ 80 ns
tAA ≤ 45 ns
tRP 70 ns
tCPA ≤ 45 ns
Chapter 2 - Installation
16
Step 2 Install Memory, Continued
SIMM Part Numbers
The following table lists suggestedmanufacturers and part numbers.
Memory Type Manufacturer Part Number
1 MB x 9 Fujitsu® MB85235-70
Toshiba® THM91000AS-70
NEC® MC-42100A9-70
Siemens® HYM910005-70
4 MB x 9 OKI® MSC2340-70459
Toshiba THM94000S-80
NEC MC-85235-80
Installing SIMMs
Both Bank 0 and Bank 1 have four SIMMsockets. These sockets can be filled witheither 1 MB x 9 or 4 MB x 9 SIMMs. Useonly one type of module to fill each bank.
Place the 80486 Enterprise-II motherboardon an anti-static mat. With the componentside of the SIMM facing you, firmly pushthe card into the socket at a 45 degreeangle, then push it up to a verticalposition. When properly inserted, the SIMMclicks into place as the latching pinsengage. See the following figure.
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Step 2 Install Memory, Continued
SIMM Installation
The following graphic demonstrates how toinstall SIMMs.
SIMM Types
The graphic below shows the two types ofSIMMs.
Chapter 2 - Installation
18
Step 2 Install Memory, Continued
Memory Configuration
The 80486 Enterprise-II motherboard checksthe memory banks and automaticallyconfigures the amount of memory installedin the SIMM sockets. There are no userdefinable jumper or switch settings forconfiguring memory.
The following table shows the total systemmemory on the motherboard for each of thememory configurations:
Bank 0 Bank 1 Total Memory
1 MB x 9 None 3712K
1 MB x 9 1 MB x 9 7808K
4 MB x 9 None 16000K
4 MB x 9 4 MB x 9 32384K
American Megatrends Enterprise-II Motherboard User's Guide
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Step 3 Install Coprocessor
The 80486 Enterprise-II motherboardsupports the Weitek WTL4167 coprocessor.The coprocessor must operate at the samefrequency as the microprocessor.
Board Frequency Part Number
25 MHz WTL4167-025
33 MHz WTL4167-033
50 MHz N/A
Installing the Weitek
U89 is the empty 144-pin PGA socket belowthe memory slot (J21) and to the left ofthe 80486. "WEITEK" is etched on themotherboard next to the socket. Pin 1 ofthe socket has a white diagonal lineacross one corner of the square etched onthe motherboard. This corner correspondsto pin 1 of the coprocessor — alsoidentified by a diagonally cut corner.
Check for bent pins on the coprocessor.Gently straighten any bent pins withpliers. Install the component in thesocket. Align the pins and press thecoprocessor firmly into the socket, makingsure that pin 1 of the coprocessor isaligned with pin 1 of socket U89.
Test for Math Coprocessor
The BIOS System Configuration screenappears at the end of POST. If Installedis not displayed in the Math Coprocessorfield, reinstall the coprocessor. Turnpower off, check the coprocessororientation, press the chip firmly inplace and turn the power on. If still not
Chapter 2 - Installation
20
properly installed, call TechnicalSupport.
American Megatrends Enterprise-II Motherboard User's Guide
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Step 4 Install the Motherboard
The mounting hole pattern on theEnterprise-II is the same as the mountinghole pattern on the AT motherboard.Standoffs and mounting screws are notsupplied with the Enterprise-IImotherboard. The following table describesthe installation.
Step Action
1 Place the chassis for the motherboard on an anti-static mat.Connect the chassis to ground to avoid static damage duringinstallation. Connect an alligator clip with a wire lead to anyunpainted part of the chassis. Ground the other end of the lead atthe same point as the mat and the wristband.
2 Rotate the chassis so that the front is to the right, and the rear is tothe left. The side facing you is where the motherboard is mounted.The power supply is mounted at the far end of the chassis.
3 Push four nylon standoffs from the solder side of the motherboardin the holes provided for them. The standoffs lock in place. Find theslots provided for the standoffs on the chassis. Hold themotherboard, component-side up, with the edge with the standoffstoward you and the edge with the power supply connector awayfrom you. The edge connectors for the adapter cards should be tothe left.
4 Carefully slide the motherboard into the chassis. Make certain thatthe standoffs fit the slots provided for them. If the standoffs areproperly locked, the motherboard should not slide. It should alsorest level with the chassis. The far edge should fit the slots in theplastic clips.
5 Place the two mounting screws in the holes provided for them andtighten them. If necessary, shift the motherboard slightly to alignthe mounting holes on the motherboard with the holes on thechassis. Refer to the graphic on page 10.
Chapter 2 - Installation
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Step 5 Connect the Power Supply
The power supply should match the physicalconfiguration of the chassis. Make surethat the power switch is Off beforeassembly.
Before attaching all components, make surethat the proper voltage has been selected.Power supplies often can run on a widerange of voltages, but must be set(usually with a switch) to the properrange. Use at least a 200 watt (or larger)power supply, which should have built-infilters to suppress radiated emissions.The filters help the OEM pass theappropriate FCC certification testing.
If all EISA expansion slots are filled, astandard 200-250 watt power supply is notsufficient. A 300-450 watt power supply isneeded if all slots are used.
Connect to PS1 and PS2
The power supply is connected to PS1 andPS2 on the motherboard. A third connector(PS3) is supplied for some 400 watt powersupplies which have three power plugs.
American Megatrends Enterprise-II Motherboard User's Guide
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Step 5 Connect the Power Supply,Continued
Power Supply Connectors are Keyed
The connectors should be keyed to preventconnecting the plugs to the wrongconnectors.
The keys on the connector must be cut tofit on some power supplies. The followingfigure illustrates the keys that must becut.
Chapter 2 - Installation
24
Step 5 Connect the Power Supply,Continued
See the following figure for the locationof connectors PS1, PS2, and PS3.
AT-compatible power supplies have two 6-pin connectors that are inserted in PS1and PS2. The 6-pin connector with 3 redwires and 2 black wires is connected toPS2 and the remaining 6-pin connector isconnected to PS1.
PS3 can be connected to an additionalpower source.
American Megatrends Enterprise-II Motherboard User's Guide
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Step 5 Connect the Power Supply,Continued
PS1 Pinout
Pin Description
1 Power Good (Orange wire)
2 VCC (Red wire)
3 +12 Volts (Yellow wire)
4 -12 Volts (Blue wire)
5 Ground (Black wire)
6 Ground (Black wire)
PS2 Pinout
Pin Description
1 Ground (Black wire)
2 Ground (Black wire)
3 -5 Volts (White wire)
4 VCC (Red wire)
5 VCC (Red wire)
6 VCC (Red wire)
PS3 Pinout
Pin Description
1 VCC (Red wire)
2 VCC (Red wire)
3 VCC (Red wire)
4 Ground (Black wire)
5 Ground (Black wire)
6 Ground (Black wire)
Chapter 2 - Installation
26
Step 6 Connect the Keyboard Cable
The keyboard connector on the Enterprise-II is a 5-pin DIN socket and is labeledKEYBRD and J7 on the motherboard. It workswith a standard AT-compatible keyboard.
A 5-pin DIN to 6-pin mini DIN converter isneeded to connect a PS/2-type keyboard.
Pin Assignments
1 Keyboard clock
2 Keyboard data
3 Not used
4 Ground
5 VCC
Step 7 Connect the Mouse
This optional step connect a PS/2-typemouse. The mouse connector 6-pin mini DINsocket labeled J6. An IBM PS/2 compatiblemouse can be connected to this socket. Thepinout:
Pin Description
1 Mouse clock
2 Mouse data
3 NC
4 GND
5 VCC
American Megatrends Enterprise-II Motherboard User's Guide
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Step 8 Connect Cables
When connecting chassis connectors to themotherboard, make sure to connect thecorrect connector end.
Most connector wires are color-coded.Match the color of the wires leaving theswitch or LED to the same pin on theconnector end. There may be more than oneconnector with the same color-coded wires.If so, follow the wire to the switch orLED.
Pin 1 of all connectors is labeled on theEnterprise-II motherboard to identify thepin orientation when plugging in cables.See the following graphic.
The following cables should be connectedto the motherboard:
· Reset Switch cable to J17· Speaker cable to J13.· Keyboard Lock cable to J14.· Turbo Switch cable to J18· Turbo LED cable to J19
J17 Reset Button Connector
Chapter 2 - Installation
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J17 is a 2-pin single-inline berg. Whenthis button is pressed, the systemperforms a hard reset. Pin 1 is ground andPin 2 is Hard Reset.
American Megatrends Enterprise-II Motherboard User's Guide
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Step 8 Connect Cables, Continued
J13 Speaker Cable
J13 is a 4 pin single-in-line berg.AMIBIOS signals hardware problems throughthe speaker. Pin 1 on the motherboard islabeled by a plus (+).
Pin Description
1 Data Out
2 Key
3 Ground
4 VCC
J14 Keyboard Lock Connector
J14 is a 5-pin single-inline berg. Thekeyboard lock allows the user to lock thekeyboard, protecting the system fromunauthorized use. This connector is keyedwith a blank hole. Pin 1 on themotherboard is labeled with a plus (+)sign.
Pin Description
1 LED power
2 Key
3 Ground
4 Keyboard lock
5 Ground
J18 Turbo Switch Connector
J18 is a 2-pin single-inline berg. Theturbo switch allows the user to switch themotherboard clock speed between high andlow speeds.
Chapter 2 - Installation
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Step 8 Connect Cables, Continued
J19 Turbo LED
J19 is a 2-pin berg. The LED lights whenthe board is running at high speed.Connect the Turbo LED to J19.
Floppy Drive Controller
J8 is a 34-pin dual-inline berg connectorfor floppy drives. Using the graphic onpage 10, identify J8 on the motherboard.Pin one of each of the bergs are markedwith a 1. Pin one of the cable is usuallydenoted by a colored stripe on the cable.See the following graphic. The BIOS POSTroutine checks the adapter slots for afloppy disk controller. If a diskcontroller is found, the onboard floppycontroller is automatically disabled.
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The Enterprise-II supports up to two 3½"or 5¼" floppy disk drives. The connectingcable is a 34-pin ribbon cable with two34-pin edge connectors. There should be atwist in the cable between the floppyconnectors, and the last (end) connectorshould be connected to drive A:.
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Step 8 Connect Cables, Continued
Floppy Pinout
Pin Use Pin Use
1 GND 2 RPM/LC
3 GND 4 N/C
5 GND 6 N/C
7 GND 8 -INDEX
9 GND 10 -MOTOR0
11 GND 12 -FDSEL1
13 GND 14 -FDSEL0
15 GND 16 -MOTOR1
17 GND 18 DIR
19 GND 20 -STEP
21 GND 22 -WDATA
23 GND 24 -WGATE
25 GND 26 -TRK0
27 GND 28 -WRPROT
29 GND 30 -RDATA
31 GND 32 HDSEL
33 GND 34 DSKCHNG
Twist in Floppy Cable
Floppy B to Floppy A Floppy B to FloppyA
Floppy B to FloppyA
Floppy B to Floppy A
10 to 16 12 to 14 14 to 12 16 to 10
11 to 15 13 to 13 15 to 11
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Step 9 Install Adapter Cards
The 80486 Enterprise-II EISA motherboardprovides full compatibility with all IBMXT- or AT-compatible adapter cards. It haseight EISA slots. The slots are numberedon the motherboard from SLOT1 throughSLOT8. The EISA slots can accept 8- or 16-bit ISA (XT- or AT-compatible) or 16- or32-bit EISA adapter cards. The slots aredescribed below:
Slot Description
1 - 6 EISA bus master slot. These slots accept anyEISA/ISA adapter card.
7 – 8 EISA non-bus master slot. These expansionslots accept only ISA or EISA adapter cardsthat do not have EISA bus masteringcapability.
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Step 9 Install Adapter Cards, Continued
EISA adapter cards have longer and denserfingers on the edge connecters than ISAadapter cards. The EISA slots on themotherboard have two rows of contacts, onebelow the other.
The ISA slot can be inserted into the EISAconnector only far enough to make contactwith the upper row of contacts. EISAadapters have longer fingers to allowcontact with the second row of contacts.See the following graphic.
When installing EISA adapter cards, makesure that they snap in twice and are fullyseated into the EISA slot. If the cardmakes contact only with the upper row ofcontacts, it does not function properly.
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Step 9 Install Adapter Cards, Continued
8-Bit ISA Slot Pinout
Pin Use Pin Use
A1 IOCHCK- B1 GND
A2 SD07 B2 RSTDRV
A3 SD06 B3 +5
A4 SD05 B4 IRQ9
A5 SD04 B5 -5
A6 SD03 B6 DREQ2
A7 SD02 B7 -12
A8 SD01 B8 OWS-
A9 SD00 B9 +12
A10 IOCHRDY B10 GND
A11 AEN B11 SMEMW-
A12 SA19 B12 SMEMR-
A13 SA18 B13 IOW-
A14 SA17 B14 IOR-
A15 SA16 B15 DACK3-
A16 SA15 B16 DREQ3
A17 SA14 B17 DACK1-
A18 SA13 B18 DREQ1
A19 SA12 B19 REF-
A20 SA11 B20 SYSCLK
A21 SA10 B21 IRQ7
A22 SA09 B22 IRQ6
A23 SA08 B23 IRQ5
A24 SA07 B24 IRQ4
A25 SA06 B25 IRQ3
A26 SA05 B26 DACK2-
A27 SA04 B27 T/C
A28 SA03 B28 BALE
A29 SA02 B29 +5
A30 SA01 B30 OSC
A31 SA00 B31 GND
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Step 9 Install Adapter Cards, Continued
16-Bit ISA Extension Pinout
The following 16-bit pins are an extensionof the 8-bit board layout and are used inconjunction with the 8-bit board standardpins.
Pin Use Pin Use
C1 SBHE- D1 MEMCS16-
C2 LA23 D2 IOCS16-
C3 LA22 D3 IRQ10
C4 LA21 D4 IRQ11
C5 LA20 D5 IRQ12
C6 LA19 D6 IRQ13
C7 LA18 D7 IRQ14
C8 LA17 D8 DACK0-
C9 MEMR- D9 DREQ0
C10 MEMW- D10 DACK5-
C11 SD08 D11 DREQ5
C12 SD09 D12 DACK6-
C13 SD10 D13 DREQ6
C14 SD11 D14 DACK7-
C15 SD12 D15 DREQ7
C16 SD13 D16 +5
C17 SD14 D17 MASTER-
C18 SD15 D18 GND
32-bit EISA Slot Pinout
The following table identifies the pinvalues for the pins on each of the eightrows of pins on an EISA adapter card. 8-and 16-bit ISA signals are shown. Pinslabeled xxxxxx are generally used toisolate signals on the bus from adjacentpower pins. Rows A, B, C, and D are upper(ISA) contacts. Rows E, F, G, and H are
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lower (EISA) contacts. The following tablelists the pinouts for Rows F, B, E, and A.
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Step 9 Install Adapter Cards, Continued
32-bit EISA Slot Pinout, cont'd
Row F Row B Row E Row A
1 GND 1 GND 1 CMD# 1 IOCHK#
2 + 5 volts 2 RESDRV 2 START# 2 D7
3 + 5 volts 3 + 5 volts 3 EXRDY 3 D6
4 xxxxxx 4 IRQ 9 4 EX32# 4 D5
5 xxxxxx 5 - 5 volts 5 GND 5 D4
6 Access Key 6 DRQ 2 6 Access Key 6 D3
7 xxxxxx 7 - 12 volts 7 EX16# 7 D2
8 xxxxxx 8 NOWS# 8 SLBURST# 8 D1
9 + 12 volts 9 + 12 volts 9 MSBURST# 9 D0
10 M-IO 10 GND 10 W-R 10 CHRDY
11 LOCK# 11 SMWTC# 11 GND 11 AEN
12 Reserved 12 SMRDC# 12 Reserved 12 SA19
13 GND 13 IOWC# 13 Reserved 13 SA18
14 Reserved 14 IORC# 14 Reserved 14 SA17
15 BE# 3 15 DAK# 3 15 GND 15 SA16
16 Access Key 16 DRQ3 16 Access Key 16 SA15
17 BE# 2 17 DAK# 1 17 BE# 1 17 SA14
18 BE# 0 18 DRQ1 18 LA# 31 18 SA13
19 GND 19 REFRESH# 19 GND 19 SA12
20 + 5 volts 20 BCLK 20 LA# 30 20 SA11
21 LA# 29 21 IRQ 7 21 LA# 28 21 SA10
22 GND 22 IRQ 6 22 LA# 27 22 SA9
23 LA# 26 23 IRQ 5 23 LA# 25 23 SA8
24 LA# 24 24 IRQ 4 24 GND 24 SA7
25 Access Key 25 IRQ 3 25 Access Key 25 SA6
26 LA16 26 DAK# 2 26 LA15 26 SA5
27 LA14 27 T-C 27 LA13 27 SA4
28 + 5 volts 28 BALE 28 LA12 28 SA3
29 + 5 volts 29 + 5 volts 29 LA11 29 SA2
30 GND 30 OSC 30 GND 30 SA1
31 LA10 31 GND 31 LA9 31 SA0
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Step 9 Install Adapter Cards, Continued
32-bit EISA Slot Pinout, cont'd
The following table lists the pinouts forRows H, D, G, and C.
Row H Row D Row G Row C
1 LA8 1 M16# 1 LA7 1 SBHE#
2 LA6 2 IO16# 2 GND 2 LA23
3 LA5 3 IRQ 10 3 LA4 3 LA22
4 + 5 volts 4 IRQ 11 4 LA3 4 LA21
5 LA2 5 IRQ 12 5 GND 5 LA20
6 Access Key 6 IRQ 15 6 Access Key 6 LA19
7 D16 7 IRQ 14 7 D17 7 LA18
8 D18 8 DAK# 0 8 D19 8 LA17
9 GND 9 DRQ 0 9 D20 9 MRDC#
10 D21 10 DAK# 5 10 D22 10 MWTC#
11 D23 11 DRQ 5 11 GND 11 D8
12 D24 12 DAK# 6 12 D25 12 D9
13 GND 13 DRQ# 6 13 D26 13 D10
14 D27 14 DAK# 7 14 D28 14 D11
15 Access Key 15 DRQ# 7 15 Access Key 15 D12
16 D29 16 + 5 volts 16 GND 16 D13
17 + 5 volts 17 MASTER16# 17 D30 17 D14
18 + 5 volts 18 GND 18 D31 18 D15
19 MAXx# 19 MREQx#
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Step 10 Test and Configure
Review the following points beforepowering up:
_ make sure that all adapter cards areseated properly,
_ make sure all connectors are properlyinstalled,_ if the math coprocessor is used, make
sure it is seated properly,_ 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 tominimize RF emissions.
Start the Test
Plug everything in and turn on the switch.If there are any signs of a problem, turnoff the unit immediately. Reinstall theconnectors. Call Technical Support ifthere are problems.
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Step 11 Test and Configure, Continued
BIOS Errors
If the system operates normally, a displayshould appear on the monitor. The BIOSPower On Self Test (POST) should execute.
If POST does not run successfully, it willbeep or display error messages. Beepsindicate a serious problem with the systemconfiguration or hardware. The Beep Code(see page 46) indicates the problem. Makesure the affected part is properly seatedand connected. An error message isdisplayed if the error is less serious.Recheck the system configuration or theconnections.
Configure the System
Run the AMIBIOS Setup utility. You mustenter the requested information and savethe configuration data in CMOS RAM. Thesystem will then reset, run POST, and bootthe operating system. See thedocumentation on configuring the systemthrough STANDARD CMOS SETUP which beginson page 60.
Run the ECU
The Series 16 Enterprise-II is an EISAmotherboard. You must run an EISAConfiguration Utility (ECU) to properlyconfigure the system. The AmericanMegatrends ECU and the appropriatemotherboard CFG files are shipped on a
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floppy disk with Enterprise-IImotherboard.
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Chapter 3 - BIOS POST
44
Chapter 3
BIOS Power-On Self Test
AMIBIOS provides all IBM-standard POSTroutines as well as enhanced AMIBIOS POSTroutines and CPU internal diagnostics.AMIBIOS POST codes can be accessed via theManufacturing Test Port (I/O Port 80h).
POST Phases
When the system is powered on, the AMIBIOSexecutes POST, which has two phases:
• System Test and Initialization (testand initialize motherboards fornormal operations), and
• System Configuration Verification(compare defined configuration withthere hardware actually installed).
BIOS Error Reporting
AMIBIOS performs diagnostic when thesystem is powered up. Errors are reportedin one of two different ways:
If... Then...
the error occurs before thedisplay device isinitialized,
a series of beeps sound. Beep codes indicatethat a fatal error has occurred. AMIBIOS BeepCodes are described on the next page.
the error occurs after thedisplay device is
the error message is displayed. Displayederror messages are explained below. A prompt
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If... Then...
initialized, to press <F1> can also appear.
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46
Beep Codes
Errors may occur during POST (Power OnSelf Test), which is performed every timethe system is powered on. Fatal errors(listed below) are usually communicatedthrough a series of audible beeps. Allerrors except Beep Code 8 are fatal. Fatalerrors do not allow the system tocontinue.
If POST initializes the system videomonitor, errors can be displayed on thescreen. These errors usually allow thesystem to continue. They are listed onPage 48.
AMIBIOS Beep Codes
Beeps Error message Description
1 Refresh Failure The memory refresh circuitry on themotherboard is faulty.
2 Parity Error A parity error was detected in the basememory (the first 64 KB block) of memory.
3 Base 64 KB Memory Failure Memory failure in first 64 KB.
4 Timer Not Operational A memory failure occurred within the first64 KB of memory, or Timer #1 on themotherboard is not functioning.
5 Processor error The CPU (Central Processing Unit) on themotherboard has generated an error.
6 8042 - Gate A20 Failure Gate A20 on the keyboard controller(8042) contains the allows the CPU tooperate in protected mode. The BIOS isnot able to switch the CPU into protectedmode.
7 Processor Exception InterruptError
The CPU on the motherboard hasgenerated an exception interrupt.
8 Display Memory Read/WriteError
The system video adapter is either missingor its memory is faulty. This may not be afatal error.
9 ROM Checksum Error The ROM checksum value does not matchthe value encoded in the BIOS.
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Beeps Error message Description
10 CMOS Shutdown RegisterRead/Write Error
The shutdown register for CMOS RAM hasfailed.
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48
AMIBIOS Displayed Error Messages
Error message are displayed as follows:
ERROR Message Line 1ERROR Message Line 2Press <F1> to RESUME
The system does not halt if Wait for <F1>If Any Error in ADVANCED CMOS SETUP isDisabled. If a second message appears, itis usually:
RUN SETUP UTILITY.
Press <F1> to run AMIBIOS Setup.
Error Message Explanation
8042 Gate-A20 Error Gate A20 on the keyboard controller (8042) is not working.Replace the 8042.
Address Line Short! Error in the address decoding circuitry on the motherboard.
C: Drive Error No response from drive C:. Run the Hard Disk Utility. Checkthe C: hard disk type in STANDARD CMOS SETUP.
C: Drive Failure No response from drive C:. It may be necessary to replacethe hard disk.
Cache Memory Bad, DoNot Enable Cache!
Cache memory on the motherboard is defective. Consult thecache memory manufacturer.
CH-2 Timer Error Most AT motherboards include two timers. An error occurredin timer 2.
CMOS Battery StateLow
CMOS RAM is powered by a battery. The battery power islow. Replace the battery.
CMOS ChecksumFailure
A checksum value is generated for error checking. Thismessage appears if the previous value is different from thecurrent value. Run AMIBIOS Setup.
CMOS System OptionsNot Set
The values stored in CMOS RAM are either corrupt ornonexistent. Run AMIBIOS Setup.
CMOS Display TypeMismatch
The video type in CMOS RAM does not match the typedetected by the BIOS. Run AMIBIOS Setup.
CMOS Memory SizeMismatch
The amount of memory on the motherboard is different thanthe amount in CMOS RAM. Run AMIBIOS Setup.
CMOS Time & Date NotSet
Run STANDARD CMOS SETUP to set the date and time inCMOS RAM.
D: Drive Error No response from drive D:. Run the Hard Disk Utility. Checkthe D: hard disk type in STANDARD CMOS SETUP.
D: drive failure No response from hard disk drive D:. It may be necessary to
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Error Message Explanation
replace the hard disk.
Diskette Boot Failure The boot diskette in floppy drive A: is corrupt. It cannot beused to boot the system. Use another boot diskette and followthe screen instructions.
Display Switch NotProper
Some systems require a video switch on the motherboard beset to either color or monochrome. Turn the system off, setthe switch properly, then power on.
DMA Error Error in the DMA controller on the motherboard.
DMA #1 Error Error in the first DMA channel on the motherboard.
DMA #2 Error Error in the second DMA channel on the motherboard.
FDD Controller Failure The BIOS cannot communicate with the floppy disk drivecontroller. Check all appropriate connections after the systemis powered down.
HDD Controller Failure The BIOS cannot communicate with the hard disk drivecontroller. Check all appropriate connections after the systemis powered down.
INTR #1 Error Interrupt channel 1 failed POST.
INTR #2 Error Interrupt channel 2 failed POST.
Invalid Boot Diskette The BIOS can read the diskette in drive A: but it cannot bootthe system with it. Use another boot diskette and follow thescreen instructions.
Keyboard IsLocked...Unlock It
The keyboard lock on the system is engaged. The systemmust be unlocked to continue the boot process.
Keyboard Error Timing problem with the keyboard. Make sure a keyboardcontroller AMIBIOS is installed. Set the Keyboard option inSTANDARD CMOS SETUP to Not Installed to skip thekeyboard POST routines.
KB/Interface Error Error in the keyboard connector on the motherboard.
No ROM BASIC Cannot find a proper bootable sector on either diskette driveA: or hard disk drive C:. Use a bootable disk.
Off Board Parity Error Parity error in offboard memory. The format is:
OFF BOARD PARITY ERROR ADDR (HEX) = (XXXX)
XXXX is the hex address where the error occurred. RunAMIDiag to find and correct memory problems.
Onboard Parity Error Parity error in motherboard memory. The format is:
Onboard PARITY ERROR ADDR (HEX) = (XXXX)
XXXX is the hex address where the error occurred. RunAMIDiag to find and correct memory problems.
Parity Error ???? Parity error in system memory at an unknown address. RunAMIDiag to find and correct memory problems.
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EISA Error Messages
Error Message Explanation
EISA CMOS ChecksumFailure
The Checksum for EISA CMOS is bad or has neverbeen written. The battery for EISA CMOS RAM maybe bad. Run the ECU.
EISA CMOS inoperational Read/Write error in extended CMOS RAM. The batterymay be bad.
Expansion board not ready atSlot X, Y, Z
The BIOS cannot find the adapter card in Slot X, Y, orZ. Make sure the adapter card is in the correct slot andis correctly seated.
Fail-Safe Timer NMIInoperational
Devices that depend on the fail-safe NMI timer cannotoperate correctly.
ID information mismatch forSlot X, Y, Z.
The ID of the EISA Adapter Card in Slot X, Y, or Zdoes not match the ID in EISA CMOS RAM.
Invalid ConfigurationInformation for Slot X, Y, Z.
The configuration information for EISA Adapter CardsX, Y, or Z is not correct. The card cannot beconfigured. Run the ECU.
Software Port NMIInoperational
The software port NMI is not working.
ISA BIOS NMI Messages
ISA NMI Message Explanation
Memory Parity Error atxxxxx
Memory failed. The memory location is xxxxx. If notdetermined, the message is Memory Parity Error ????.
I/O Card Parity Error atxxxxx
An adapter card failed. If the address is known, it is xxxxx. Ifnot, the message is I/O Card Parity Error ????.
DMA Bus Time-out A device other than the CPU has driven the bus signal formore than 7.8 microseconds.
EISA BIOS NMI Error Messages
EISA NMI Message Explanation
BUS Timeout NMI at Slot n There was a Bus Timeout NMI at Slot n.
(E)nable (D)isable Expansion board? Type E to enable the adapter card that had anNMI or D to disable it.
Expansion board Disabled at Slot n The adapter card in Slot n has been disabled.
Expansion board NMI at Slot n An adapter card NMI was generated from Slotn.
Fail-Safe Timer NMI A fail-safe timer NMI has been generated.
Software Port NMI A software port NMI has been generated.
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BIOS Configuration Summary Screen
System Configuration (C) Copyright 1985-1991 American Megatrends Inc.
Main ProcessorNumeric CoprocessorFloppy Drive A:Floppy Drive B:Display Type:ROM-BIOS Date:
: 80486: Present: 1.2 MB ½: 1.44 MB ¼:VGA or EGA: 05/01/91
Base Memory SizeExt. Memory SizeHard Disk C: TypeHard Disk D: TypeSerial Port(s)Parallel Port(s)
: 640 KB: 7808 KB: 44: None: 3F8: 378
WeitekOn Board FloppyVideo Bios Shadow
: Absent: Enabled: Enabled
MouseExternal CacheC800 Bios Shadow
: Absent: 128 KB: Disabled
MEMORY TYPE USED AS MEMORY TYPE USED AS
BANK1 1 M X 9 1 M x 9 BANK4 Absent AbsentBANK2 1 M X 9 1 M x 9 BANK5 Absent AbsentBANK3 Absent Absent BANK6 Absent Absent
POST Memory Test
Normally, the only visible POST routine isthe memory test, shown below.
ROM BIOS (C) 1991 American Megatrends Inc.XXXXX KB OKPress <DEL> if you want to run SETUP
(C) American MegatrendsXX-XXXX-XXXXXX-XXXXXXXX-XXXXXX-XXXX-X
A BIOS Identification string appears inthe left bottom corner of the screen.Press <Ins> during system boot to displaytwo additional BIOS Identificationstrings. The BIOS Identification Stringare described in the ISA and EISA AMIBIOSTechnical Reference. When a problemoccurs, freeze the screen by powering onthe system and holding a key down, whichcauses a Keyboard Error message. Copy theBIOS Identification Strings and reportthis information to American MegatrendsTechnical Support. Press <F1> to continue.Enable the Wait for <F1> If any Erroroption in ADVANCED CMOS SETUP before usingthis method to freeze the screen.
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Chapter 4
AMIBIOS Setup
AMIBIOS Features
AMIBIOS has several features that can beaccessed at any time.
Keyboard Speed Switching
The end use can increase processor speedsat any time by pressing <Ctrl><Alt><+>.Processor speed can be decreased bypressing <Ctrl><Alt><->. Of course, theOEM can modify these keystrokecombinations via AMIBCP. The above valuesare merely the default settings.
Enable Cache Memory
External cache memory can be enabled bypressing <Ctrl><Alt><Shift><+> or disabledby pressing <Ctrl><Alt><Shift><->. The OEMcan modify these keystroke combinationsvia AMIBCP. The above values are merelythe default settings.
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AMIBIOS Setup
AMIBIOS Setup has two parts:
· STANDARD CMOS SETUP, and· ADVANCED CMOS SETUP.
STANDARD CMOS SETUP
STANDARD CMOS SETUP permits the end userto configure and set system componentssuch as floppy drives, hard disk drives,time and date, monitor type, and keyboard.
ADVANCED CMOS SETUP
ADVANCED CMOS SETUP allows the end user toconfigure more advanced parts of memoryconfiguration, peripheral support, andpassword support. ADVANCED CMOS SETUP isdiscussed in Section 4.
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Section 1
Running AMIBIOS Setup
A record of the computer's systemparameters (such as amount of memory, diskdrives, video displays, and numericcoprocessors) is stored in CMOS(Complementary Metal Oxide Semiconductor)RAM.
When the computer is turned off, a back-upbattery provides power to CMOS RAM, whichretains the system parameters.
Each time the system is powered-on, it isconfigured with these values, unless CMOSRAM has been corrupted. AMIBIOS Setupresides in the ROM BIOS (Read Only MemoryBasic Input/Output System) and isavailable each time the computer is turnedon.
If, for some reason, CMOS RAM becomescorrupted, the system is configured withthe default values stored in this ROMfile. There are two sets of BIOS valuesstored in the ROM file: the BIOS Setupdefault values and the Power-On defaultvalues.
Starting Setup
When POST has completed, the followingmessage appears:
Hit <DEL> if you want to run SETUP
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Press <Del> to run AMIBIOS Setup.
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AMIBIOS Setup Key Use
Keystroke Action
<Esc> Returns to previous screen.
→,←, ↑ , ↓ Move the cursor from one option to the next.
<PgUp> and<PgDn>;
<Ctrl><PgUp>and
<Ctrl><PgDn>
Modify the default value of the options for the highlightedparameter. If there are fewer than 10 options, <Ctrl><PgUp> and <Ctrl> <PgDn> operate like <PgUp> and<PgDn>.
<F1> Displays Help.
<F2> Change background colors.
<F3> Change foreground colors.
<F5> Restores the values resident when the current Setupsession began. These values are taken from CMOSRAM if CMOS RAM was uncorrupted at the start of thesession. Otherwise, the values are the BIOS Setupdefault values.
<F6> Loads all features in the ADVANCED CMOS SETUPwith the BIOS Setup defaults.
<F7> Loads all features in the ADVANCED CMOS SETUPwith the Power-On defaults.
<F10> Saves all changes made to Setup and returns to DOS.
Note: The default value for <F5>, <F6>,and <F7> is always N. To executethese options, change the N to Y andpress <Enter>.
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AMIBIOS Setup Main Menu
The AMIBIOS Setup Main Menu options areshown below.
Each option is explained in detail in thissection.
Warning Message
A warning is displayed every time youchoose STANDARD CMOS SETUP or ADVANCEDCMOS SETUP. Press any key to continue.
Auto Configuration With BIOS Defaults
Auto Configuration With BIOS Defaults usesthe default system values. The BIOSdefault value are best-case values thatshould optimize system performance. IfCMOS RAM is corrupted, the BIOS defaultsis automatically loaded. To use the BIOSdefaults, type Y and press <Enter>. Thefollowing message appears:
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Default values loaded. Press any key tocontinue.
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Auto Configuration With Power-On Defaults
This option configures the default Power-On values. Power-On default values areworst-case values for system performance,but are the most stable values that can bechosen. Use this option as a diagnosticaid if the system is behaving erratically.Type Y and press <Enter> to use the Power-On defaults. The following messageappears:
Default values loaded. Press any key to continue.
Write to CMOS and Exit
The features selected and configured inthe STANDARD CMOS SETUP, ADVANCED CMOSSETUP, and the new Password Setup arestored in CMOS RAM when this option isselected. A CMOS RAM checksum iscalculated and written to CMOS RAM.Control is then passed to the ROM BIOS.
Write to CMOS and Exit (Y/N)?
Type N and press <Enter> to return to theMain Menu. Type Y and press <Enter> tosave the system parameters and continuethe boot process.
Do Not Write to CMOS RAM and Exit
This option passes control to the ROM BIOSwithout writing any changes to CMOS RAM.Type N and press <Enter> to return to theMain Menu. Type Y and press <Enter> tocontinue the boot process without savingany system parameters.
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Section 2
STANDARD CMOS SETUP
STANDARD CMOS SETUP is the first option onthe Main Menu. Press <Enter> at thehighlighted selection to display thisoption. The following screen appears.
STANDARD CMOS SETUP Options
Date And Day Configuration
Ranges for each value are shown in thelower left corner of the Screen. Move thecursor to the Date field via ↑ or ↓ andset the Date and Day by pressing <PgUp>and <PgDn> to change the values.
Time Configuration
This option uses a 24 hour clock format. For PMnumbers, add 12 to the hour. Enter 4:30 P.M. as16:30:00. Move the cursor to the Time field via ↑ or
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↓ and set the time by pressing <PgUp> and<PgDn>.
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STANDARD CMOS SETUP Options,Continued
Hard Disk Drive C:Hard Disk Drive D:
Move the cursor to these fields via ↑ or ↓and select a hard drive type by pressing<PgUp> and <PgDn>. The hard drive typesare listed on page 64. Match the hard diskdrive parameters provided by the hard diskmanufacturer to a hard disk drive type inthis table. If the parameters for the harddisk drive being configured do not matchtype 1 – 46, select Type 47 and enter thehard drive parameters.
If configuring an IDE drive, you mustselect Type 47. If configuring an ESDIdrive, you must select Type 1. Ifconfiguring a SCSI drive, you must selectNot Installed. Not Installed is used toconfigure diskless workstations.
Type 47 can be used for both hard disks C:and D:. The parameters for type 47 underHard Disk C: and Hard Disk D: can bedifferent, which effectively allows twodifferent user-definable hard disk types.The hard disk drive parameters are:
Parameter Description
Type The number designation for a drive with certain identificationparameters.
Cylinders The number of cylinders in the disk drive.
Heads The number of heads.
WritePrecompensation
The size of a sector gets progressively smaller as the trackdiameter diminishes. Yet each sector must still hold 512 bytes.Write precompensation circuitry on the hard disk compensates forthe physical difference in sector size by boosting the write currentfor sectors on inner tracks. This parameter is the track numberwhere write precompensation begins.
Landing Zone This number is the cylinder location where the heads will normallypark when the system is shut down.
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Parameter Description
Sectors The number of sectors per track. Hard drives that use MFM have17 sectors per track. RLL drives have 26 sectors per track. ARLLand ESDI drives have 34 sectors per track. SCSI and IDE drivemay have even more sectors per track.
Capacity The formatted capacity of the drive is : Number of heads X (Numberof cylinders) X (Number of sectors per track) X (512 bytes persector).
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STANDARD CMOS SETUP Options
Hard Disk Drive TypesHard Disk Drive Types
Type Cylinders Heads WritePrecompensation
LandingZone
Sectors Size
1 306 4 128 305 17 10 MB
2 615 4 300 615 17 20 MB
3 615 6 300 615 17 31 MB
4 940 8 512 940 17 62 MB
5 940 6 512 940 17 47 MB
6 615 4 65535 615 17 20 MB
7 462 8 256 511 17 31 MB
8 733 5 65535 733 17 30 MB
9 900 15 65535 901 17 112 MB
10 820 3 65535 820 17 20 MB
11 855 5 65535 855 17 35 MB
12 855 7 65535 855 17 50 MB
13 306 8 128 319 17 20 MB
14 733 7 65535 733 17 43 MB
16 612 4 0 663 17 20 MB
17 977 5 300 977 17 41 MB
18 977 7 65535 977 17 57 MB
19 1024 7 512 1023 17 60 MB
20 733 5 300 732 17 30 MB
21 733 7 300 732 17 43 MB
22 733 5 300 733 17 30 MB
23 306 4 0 336 17 10 MB
24 925 7 0 925 17 54 MB
25 925 9 65535 925 17 69 MB
26 754 7 754 754 17 44 MB
27 754 11 65535 754 17 69 MB
28 699 7 256 699 17 41 MB
29 823 10 65535 823 17 68 MB
30 918 7 918 918 17 53 MB
31 1024 11 65535 1024 17 94 MB
32 1024 15 65535 1024 17 128 MB
33 1024 5 1024 1024 17 43 MB
34 612 2 128 612 17 10 MB
35 1024 9 65535 1024 17 77 MB
36 1024 8 512 1024 17 68 MB
37 615 8 128 615 17 41 MB
38 987 3 987 987 17 25 MB
39 987 7 987 987 17 57 MB
40 820 6 820 820 17 41 MB
41 977 5 977 977 17 41 MB
42 981 5 981 981 17 41 MB
43 830 7 512 830 17 48 MB
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Type Cylinders Heads WritePrecompensation
LandingZone
Sectors Size
44 830 10 65535 830 17 69 MB
45 917 15 65535 918 17 114 MB
46 1224 15 65535 1223 17 152 MB
47 Enter disk drive parameters supplied by hard drive manufacturer.
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STANDARD CMOS SETUP Options, Continued
Floppy Drive A:Floppy Drive B:
Move the cursor to these fields via ↑ or ↓and select a drive type by pressing <PgUp>and <PgDn>. The settings are 360 KB 5¼inch, 1.2 MB 5¼ inch, 720 KB 3½ inch, 1.44MB 3½ inch, 2.88 MB 3½ inch, or NotInstalled. Not Installed can be used toconfigure diskless workstations.
Monitor
Move the cursor to this field via ↑ or ↓and select a monitor type by pressing<PgUp> and <PgDn>. The settings areMonochrome, Color 40x25, VGA/PGA/EGA,Color 80x25, or Not Installed. NotInstalled is used for network file serversand other systems that do not havemonitors.
Keyboard
Move the cursor to this field via ↑ or ↓and select a setting by pressing <PgUp>and <PgDn>. The settings are Installed orNot Installed. Not Installed could be usedfor network file servers, since itprevents the display of error messagesabout missing keyboards.
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Section 3
ADVANCED CMOS SETUP
The following options are displayed on theADVANCED CMOS SETUP screen.
• Typematic Rate Programming,• Typematic Rate Delay (msec),• Typematic Rate (Chars/Sec),• Extended Memory Test,• Memory Test Tick Sound,• Memory Parity Error Check,• Hit <ESC> Message Display,• Hard Disk Type 47 RAM Area,• Wait For <F1> If Any Error,• System Boot Up Num Lock,• Numeric Processor,• Floppy Drive Seek at Boot,• System Boot Up Sequence,• Fast Gate A20 Option,• Password Checking Option,• Video ROM Shadow C000, 32K• Adaptor ROM Shadow C800, 32K
Help Screens
All AMIBIOS Setup options have helpscreens accessed by pressing <F1> when theoption is highlighted.
Warning Message
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A warning message is displayed whenADVANCED CMOS SETUP is selected. Press anykey to continue.
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ADVANCED CMOS SETUP Screen
ADVANCED CMOS SETUP is shown below. Use ↑or ↓ to scroll through the options.
ADVANCED CMOS SETUP Options
Typematic Rate Programming, Rate, andDelay
Typematic Rate Programming enables ordisables the following two options.Typematic Rate Delay (250, 500, 750, or1,000 milliseconds) and Typematic Rate (6,8, 10, 12, 14, 15, 20, 24, or 30characters per second) control the speedat which a keystroke is repeated.
When a key is pressed and held down, theassociated character is displayed. After adelay specified by the Typematic RateDelay, the character repeats at theTypematic Rate. When two or more keys are
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pressed and held down simultaneously, onlythe last key is repeated.
Repeating stops when the last key pressedis released, even if other keys arepressed.
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ADVANCED CMOS SETUP Options,Continued
Extended Memory Test
This feature, when enabled, executes POSTmemory routines on the RAM above 1 MB (ifpresent on the system). If disabled, theBIOS only checks the first 1 MB of RAM.
Memory Test Tick Sound
This option enables (turns on) or disables(turns off) the ticking sound during thememory test.
Memory Parity Error Check
This option can be Enabled or Disabled. Ifenabled, the parity is tested on allmemory above 1 MB. If disabled, only thefirst 1 MB of memory is tested.
Hit <DEL> Message Display
Disabling this option prevents
Hit <DEL> if you want to run Setup
from appearing when the system boots.
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ADVANCED CMOS SETUP Options,Continued
Hard Disk Type 47 RAM Area
You can specify a user-definable hard disktype for drive C: and drive D:. The type47 drive parameters must be entered inSTANDARD CMOS SETUP (see page 66). Thisoption specifies the type 47 data storagearea – 0:300h in lower system RAM or inthe top 1 KB of applications memory,starting at address 639K or 511K(depending on how much base memory thesystem has). Type 47 data is stored inshadow RAM if shadowing is enabled. Thefollowing graphic illustrates type 47 datastorage.
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Wait for <F1> If Any Error
If enabled, the BIOS waits until the enduser presses <F1> before continuing afteran error message. If disabled, the BIOScontinues after the error message.
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ADVANCED CMOS SETUP Options,Continued
System Boot Up Num Lock
Turns off Num Lock when the system ispowered on so you can use the arrow keyson both the numeric keypad and thekeyboard.
Numeric Processor
Specifies that a math coprocessor isconfigured in the system. The settings arePresent or Absent.
Floppy Drive Seek At Boot
The default for this option is Disabled toallow a fast boot and to decrease thepossibility of damage to the heads.
System Boot Up Sequence
This option sets the boot sequence fordisk drives. The default is A:,C:. Thesettings are C:,A: or A:,C:.
Fast Gate A20 Option
Gate A20 controls the ability to accessmemory addresses above 1 MB by enabling ordisabling access to the processor addressline A20. To remain XT-compatible and beable to access conventional memory (from 0- 1024K), address line A20 must always below, so Gate A20 must be disabled.However, some software programs both enterprotected mode and use the CMOS RAMShutdown byte to return to real mode viathe BIOS. For this software, Gate A20 mustbe constantly enabled and disabled via the
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keyboard controller, which is slow. FastGate A20 is an alternate method ofenabling Gate A20 that permits fasterswitching between addresses modes.
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ADVANCED CMOS SETUP Options,Continued
Password Checking Option
This option enables the password checkoption every time the system boots or theend user runs Setup. If Always is chosen,a user password prompt appears every timethe system is turned on. If Setup ischosen, the password prompt appears ifSetup is run. See Section 6 (Page 77) forinstructions on changing a password.
Video or Adaptor ROM Shadow
ROM shadow is a technique in which BIOScode is copied from slower ROM to fasterRAM. The BIOS is then executed from theRAM.
The video ROM segment at C000–C7FFh can beEnabled or Disabled.
Shadowing for the adapter ROM at C800h–CFFFh can also be Enabled or Disabled.
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Section 4
AMIBIOS Password Support
AMIBIOS Setup has an optional passwordfeature. The system can be configured sothe end user must enter a password everytime the system boots or when Setup isrun.
Changing a Password
The password check option is enabled or inADVANCED CMOS SETUP (Page 76).
The password (1-6 characters) is stored inCMOS RAM. To change a password, select theChange Password option from the main Setupscreen and press <Enter>. The followingprompt appears.
Enter CURRENT Password:
The first time this option is selected,the end user must enter a password andpress <Enter>. The screen does not displaythe characters entered. After the currentpassword has been correctly entered, theend user is asked to retype the newpassword and press <Enter>.
If the password confirmation is incorrect,an error message appears. If the newpassword is entered without error, the enduser can press <Esc> to return to the MainSetup menu.
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AMIBIOS Password Support, Continued
Password Storage
The password is stored in CMOS RAM afterSetup completes. The next time the systemboots, the end user is prompted for thepassword if the password function ispresent and has been enabled.
Using a Password
The end user must enter the new passwordwhen the password prompt appears and thenpress <Enter>. The end user should use thedefault password if CMOS RAM is corrupted.
The end user should keep a record of thenew password when the password is changed.If he forgets the password and passwordprotection is enabled he must return thesystem to the manufacturer for repair.
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Section 5
Hard Disk Utility
AMIBIOS includes three hard diskutilities:
Utility Purpose Turn to
Hard Disk Format Performs a low level format of thehard drive(s). Read the system orhard disk drive documentation to findout if the hard disk has beenpreformatted.
Page 81
Auto Interleave Determines the optimum interleavefactor and then performs a low levelformat of the hard disk drive.
Page 83
Media Analysis Analyzes each hard disk drive trackto determine whether it is usable.The track is labeled bad if unusable.
Page 55
The hard disk utility error messages aredescribed on page 86.
These routines work on drives that use theMFM, RLL, ARLL, or ESDI data recordingtechniques. They do not work on IDE orSCSI Disk Drives.
WarningAMIBIOS Hard Disk Utilities destroy all hard disk data. Back up thedata on the hard disk before running this utility.
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When to Use AMIBIOS Hard Disk Utilities
When Conditions Run...
Installing a newhard disk.
The hard disk drivemanufacturer provided a list ofbad tracks, the systemdocumentation includes theoptimum interleave factor, andthe drive is preformatted .
None
Installing a newhard disk.
You do not have a list of badtracks.
Media Analysis
Installing a newhard disk.
You do not know the optimuminterleave factor.
Auto Interleave
Installing a newhard disk.
The drive is not formatted. Hard Disk Format
Installing a usedhard disk drive.
N/A All Hard Disk Utilities
When Hard Disk Diagnostics is selected,the following screen appears.
Select an option and press <Enter>.
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Hard Disk Format Utility
WarningThe Hard Disk Format utility destroys all hard diskdata. Back up the data on the hard disk beforerunning this utility.
This routine does not work on IDE or SCSIdrives. Use Hard Disk Format to integratea new hard disk to the system, or toreformat a used hard disk which hasdeveloped bad tracks as a result of agingor poor handling. Select Media Analysis tofind bad tracks. The following screenappears when Hard Disk Format is selected.
Hard Disk Format screen
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Hard Disk Format Utility, Continued
Answer the questions on the screen. Thefirst two questions are already completedif only one hard disk drive was selectedin Standard CMOS Setup and the cursor ison Interleave. The Disk Drive Type is readfrom CMOS RAM. The interleave factor canbe selected manually or determined by theAuto Interleave routine.
The hard disk drive manufacturer usuallyprovides a list of bad tracks. Enter thesetracks. They are then labeled as bad toprevent data from being stored on them.The following screen is displayed afterentering Y in Mark Bad Tracks, pressing<Enter>, and selecting add, delete,revise, or clear from the Bad Track EditMenu.
Type Y and press <Enter>. A warning screenappears. Press any key to continue.
WarningData on the hard drive will be irrevocably lost.
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Auto Interleave Utility
WarningThe Auto Interleave utility destroys hard disk data.Back up the data on the hard disk before runningthis utility.
The Auto Interleave utility calculates theoptimum interleave factor through trialand error by measuring the transfer ratefor four different interleave values. Todetermine the best interleave factor, thesystem formats a portion of the hard diskfor each transfer rate calculated. Thecylinders, heads and sectors formatted foreach value is displayed in the activitybox. It does not work on IDE or SCSIdrives.
Select Auto Interleave on the main HardDisk Utility Screen and press <Enter>. Thefollowing appears.
The cursor is on Mark Bad Tracks. Thedefault is N. To mark additional badtracks, type Y and press <Enter>. Afterselecting options from the Bad Tracks Edit
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Menu, press <Esc>. Type Y and press<Enter> to proceed with the AutoInterleave process. A warning screenappears. Press <Enter> to return to themain Hard Disk Utility screen. To proceed,type Y and press <Enter>.
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Media Analysis Utility
The Media Analysis utility performs aseries of tests to locate bad or damagedtracks on the hard disk as a result ofaging or poor handling. This utilitylocates all bad tracks and lists them inthe Bad Track List Box. Since this testwrites to all cylinders and heads on thehard disk to verify any bad tracks, thetest requires several minutes to complete.For best results, run this test in itsentirety. Media Analysis does not work onIDE or SCSI drives.
Select Media Analysis from the main HardDisk Utility Menu and press <Enter>. Thefollowing screen appears.
Media Analysis Screen
The cursor is on Proceed. The warningscreen appears. Press <Enter> to stop. Themain Hard Disk Utility screen appears.Type Y and press <Enter> to perform thehard disk drive analysis.
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Hard Disk Utility Error Messages
Initialization Errors
Message Explanation
No Hard DiskInstalled
There is no hard disk drive in the system but HardDisk Utility was selected.
FATAL ERROR BadHard Disk
No response from the hard disk, or the hard disk isnot repairable. Check all cable and powerconnections to the hard disk.
Hard Disk ControllerFailure
Error response from the reset command sent to thehard disk controller. The controller may not beseated properly in the BUS slot.
C: (D:) Hard DiskFailure
The hard disk drive (C: or D:) is not responding tocommands. Check power and cable connections tothe hard disk.
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Hard Disk Utility Error Messages, Continued
Operation Errors
Message Explanation
Address Mark NotFound
The address mark (initial address) on the hard diskcould not be found.
Attachment Failed toRespond
No response has been received from the hard diskdrive.
Bad ECC on DiskRead
When the hard disk drive utility writes to the disk, italso calculates an ECC (Error Correction Code)value for the data being written. This ECC value iswritten to the drive and then read back. The valueread back is different from the one calculated.
Bad Sector FlagDetected
An operation was performed on a sector that hasbeen flagged as bad.
Controller HasFailed
A diagnostic command was issued to the controllerfailed.
Drive Not Ready An operation on the hard disk drive has timed out.The hard disk drive utility has waited beyond a presetspecified time limit.
Drive ParameterActivity Failed
A reset command was sent to the controller followedby drive parameters. Using these parameters, thecontroller did not get a response from the hard disk.Make sure the drive type is correct.
ECC Corrected DataError
The ECC value (explained above) read from the diskis not the same value which was written to the disk.The data is not correct. An attempt was made tocorrect the data, but the ECC value is not corrected.
Requested SectorNot Found
The requested sector could not be found.
Reset Failed The reset command did not properly reset the harddisk.
Seek OperationFailed
A seek command failed. A seek operation is the actof finding a particular sector on the hard disk.
Undefined Error -Command Aborted
An unidentifiable error condition occurred.
Write Fault onSelected Drive
A write fault occurred during the write operation onthe hard disk drive.
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Appendix A
32-Bit Enterprise-II MemoryCard
The 80486 Enterprise-II motherboardsupports up to 32 MB of SIMMs on themotherboard. You can install the Series 1932-bit Memory Card to increase 32-bitmemory. All SIMM banks on the motherboardmust be filled before installing a 32-bitMemory Card.
Unpacking the Memory Card
Follow the same procedures outlined onpage 9 when unpacking the Series 19 MemoryCard.
Memory Card Features
The 32-bit Memory Card plugs into the 32-bit slot on the motherboard labeled J20and J21. The Memory Card has a capacity of64 MB and uses 1 MB or 4 MB x 9 SIMMs. Ithas four 32-bit memory banks with foursockets each. Use as many banks as youwish. All banks must use the same SIMMtype. When upgrading memory on the MemoryCard, you must fill an entire bank. Thenew SIMMs must be the same type as thepreviously installed SIMMs. For example,if Bank3 is populated with four 1 MB x 9SIMMs, each of the remaining banks must beupgraded with four 1 MB x 9 SIMMs.
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The SIMM banks on the 80486 Enterprise-IImotherboard are marked BNK1 and BNK2. TheSIMM banks on the 32-bit Memory Card aremarked BANK3, BANK4, BANK5, and BANK6. TheDIP switch (SW) on the memory board has noeffect.
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90
Installing the 32-bit Memory Card
Step Action
1 The memory card has two edge connectors: The 64-pin connectorplugs into J20 and the 132-pin connector into J21 on themotherboard.
2 The card has a guide on one end. Hold the board firmly and gentlypress down until the card is in the slot. Install a screw in the cardguide.
3 Turn the power on.
4 Make sure the total amount of memory on the configuration screenis correct. See the table below. If incorrect, make sure the SIMMsare seated properly.
Memory Configurations
This table shows the total memory for allmemory combinations. BANK 1 and 2 are onthe motherboard. BANK3, 4, 5, and 6 on thememory card.
Bank1 Bank2 Bank3 Bank4 Bank5 Bank6 TotalRAM
1 MB 1 MB 1 MB -- -- -- 12 MB
1 MB 1 MB 1 MB 1 MB -- -- 16 MB
1 MB 1 MB 1 MB 1 MB 1 MB -- 20 MB
1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 24 MB
1 MB 1 MB 4 MB -- -- -- 24 MB
1 MB 1 MB 4 MB 4 MB -- -- 40 MB
1 MB 1 MB 4 MB 4 MB 4 MB -- 56 MB
1 MB 1 MB 4 MB 4 MB 4 MB 4 MB 72 MB
4 MB 4 MB 1 MB -- -- -- 36 MB
4 MB 4 MB 1 MB 1 MB -- -- 40 MB
4 MB 4 MB 1 MB 1 MB 1 MB -- 44 MB
4 MB 4 MB 1 MB 1 MB 1 MB 1 MB 48 MB
4 MB 4 MB 4 MB -- -- -- 48 MB
4 MB 4 MB 4 MB 4 MB -- -- 64 MB
4 MB 4 MB 4 MB 4 MB 4 MB -- 80 MB
4 MB 4 MB 4 MB 4 MB 4 MB 4 MB 96 MB
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Appendix B
EISA ConfigurationWorksheets
This appendix consists of a two-page worksheetfor up to eight EISA adapter cards. Complete aworksheet for each EISA adapter card in thesystem to simplify the EISA configurationprocess. These worksheets are helpful used inconjunction with the American Megatrends EISAConfiguration Utility (ECU) when configuring anEISA system with many EISA adapter cards.
Motherboard Configuration
Serial Number __________________________
Revision Number ________________________
ECN Number _____________________________
Memory Type for Bank1 and Bank2: ___ 1 MB x 9 SIMM(check the type used) ___ 4 MB x 9 SIMM
Memory Type for Bank3, Bank4, ___ 1 MB x 9 SIMMBank5, and Bank6: ___ 4 MB x 9 SIMM
Memory Installed: ___ Bank1(check the banks installed) ___ Bank2
___ Bank3___ Bank4___ Bank5___ Bank6
Total Amount of Memory: _________ MB
Other Options: ___ Weitek
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(check the options installed)
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EISA Slot 1
Card Description: __________________________________________
Manufacturer: __________________________________________
EISA Master: ___ Yes ___ No___ 16-bit___ 32-bit
ISA Master: ___ Yes ___ No___ 8-bit ___ 16-bit
Memory Description
Space is provided below for configuration information for two memory banks.Some EISA adapter cards have up to eight memory banks. Duplicate this sheetif there are more than two memory banks.
Amount of Memory: __________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
DMA Channel Description
DMA channels used: ___ 0 ___ 1 ___ 2 ___ 3___ 5 ___ 6 ___ 7
Data size ___ 8-bit ___ 16-bit___ 32-bit
Timing: ___ Compatible ___ Type A ___ Type B ___ TypeC
Share: ___ Yes ___ No
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EISA Slot 1, cont'd
Interrupt Description
Edge-Triggered Interrupts:
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14
___ IRQ15
Share: ___ Yes ___ No
Level-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14
___ IRQ15
Switch and Jumper Settings
______________________________________________________________
______________________________________________________________
______________________________________________________________
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EISA Slot 2
Card Description: __________________________________________
Manufacturer: __________________________________________
EISA Master: ___ Yes ___ No___ 16-bit___ 32-bit
ISA Master: ___ Yes ___ No___ 8-bit ___ 16-bit
Memory Description
Space is provided below for configuration information for two memory banks.Some EISA adapter cards have up to eight memory banks. Duplicate this sheetif there are more than two memory banks.
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
DMA Channel Description
DMA channels used: ___ 0 ___ 1 ___ 2 ___ 3___ 5 ___ 6 ___ 7
Data size ___ 8-bit ___ 16-bit___ 32-bit
Timing: ___ Compatible ___ Type A___ Type B ___ Type C
Share: ___ Yes ___ No
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EISA Slot 2, cont'd
Interrupt Description
Edge-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Share: ___ Yes ___ No
Level-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Switch and Jumper Settings
______________________________________________________________
______________________________________________________________
______________________________________________________________
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EISA Slot 3
Card Description: __________________________________________
Manufacturer: __________________________________________
EISA Master: ___ Yes ___ No___ 16-bit___ 32-bit
ISA Master: ___ Yes ___ No___ 8-bit ___ 16-bit
Memory Description
Space is provided below for configuration information for two memory banks.Some EISA adapter cards have up to eight memory banks. Duplicate this sheetif there are more than two memory banks.
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
DMA Channel Description
DMA channels used: ___ 0 ___ 1 ___ 2 ___ 3___ 5 ___ 6 ___ 7
Data size ___ 8-bit ___ 16-bit___ 32-bit
Timing: ___ Compatible ___ Type A___ Type B ___ Type C
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Share: ___ Yes ___ No
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EISA Slot 3, cont'd
Interrupt Description
Edge-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Share: ___ Yes ___ No
Level-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Switch and Jumper Settings
______________________________________________________________
______________________________________________________________
______________________________________________________________
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EISA Slot 4
Card Description: __________________________________________
Manufacturer: __________________________________________
EISA Master: ___ Yes ___ No___ 16-bit___ 32-bit
ISA Master: ___ Yes ___ No___ 8-bit ___ 16-bit
Memory Description
Space is provided below for configuration information for two memory banks.Some EISA adapter cards have up to eight memory banks. Duplicate this sheetif there are more than two memory banks.
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
DMA Channel Description
DMA channels used: ___ 0 ___ 1 ___ 2 ___ 3___ 5 ___ 6 ___ 7
Data size ___ 8-bit ___ 16-bit___ 32-bit
Timing: ___ Compatible ___ Type A___ Type B ___ Type C
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Share: ___ Yes ___ No
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EISA Slot 4, cont'd
Interrupt Description
Edge-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Share: ___ Yes ___ No
Level-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Switch and Jumper Settings
______________________________________________________________
______________________________________________________________
______________________________________________________________
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EISA Slot 5
Card Description: __________________________________________
Manufacturer: __________________________________________
EISA Master: ___ Yes ___ No___ 16-bit___ 32-bit
ISA Master: ___ Yes ___ No___ 8-bit ___ 16-bit
Memory Description
Space is provided below for configuration information for two memory banks.Some EISA adapter cards have up to eight memory banks. Duplicate this sheetif there are more than two memory banks.
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
DMA Channel Description
DMA channels used: ___ 0 ___ 1 ___ 2 ___ 3___ 5 ___ 6 ___ 7
Data size ___ 8-bit ___ 16-bit___ 32-bit
Timing: ___ Compatible ___ Type A___ Type B ___ Type C
Share: ___ Yes ___ No
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EISA Slot 5, cont'd
Interrupt Description
Edge-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Share: ___ Yes ___ No
Level-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Switch and Jumper Settings
_________________________________________________________
_________________________________________________________
_________________________________________________________
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EISA Slot 6
Card Description: __________________________________________
Manufacturer:__________________________________________
EISA Master: ___ Yes ___ No___ 16-bit___ 32-bit
ISA Master: ___ Yes ___ No___ 8-bit ___ 16-bit
Memory Description
Space is provided below for configuration information for two memory banks.Some EISA adapter cards have up to eight memory banks. Duplicate this sheetif there are more than two memory banks.
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
DMA Channel Description
DMA channels used: ___ 0 ___ 1 ___ 2 ___ 3___ 5 ___ 6 ___ 7
Data size ___ 8-bit ___ 16-bit___ 32-bit
Timing: ___ Compatible ___ Type A___ Type B ___ Type C
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Share: ___ Yes ___ No
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EISA Slot 6, cont'd
Interrupt Description
Edge-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Share: ___ Yes ___ No
Level-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Switch and Jumper Settings
_________________________________________________________
_________________________________________________________
_________________________________________________________
Appendix B - EISA Configuration Worksheets
108
EISA Slot 7
Card Description: __________________________________________
Manufacturer: __________________________________________
EISA Master: ___ Yes ___ No___ 16-bit___ 32-bit
ISA Master: ___ Yes ___ No___ 8-bit ___ 16-bit
Memory Description
Space is provided below for configuration information for two memory banks.Some EISA adapter cards have up to eight memory banks. Duplicate this sheetif there are more than two memory banks.
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
DMA Channel Description
DMA channels used: ___ 0 ___ 1 ___ 2 ___ 3___ 5 ___ 6 ___ 7
Data size ___ 8-bit ___ 16-bit___ 32-bit
Timing: ___ Compatible ___ Type A___ Type B ___ Type C
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Share: ___ Yes ___ No
Appendix B - EISA Configuration Worksheets
110
EISA Slot 7, cont'd
Interrupt Description
Edge-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Share: ___ Yes ___ No
Level-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Switch and Jumper Settings
______________________________________________________________
______________________________________________________________
______________________________________________________________
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EISA Slot 8
Card Description: __________________________________________
Manufacturer: __________________________________________
EISA Master: ___ Yes ___ No___ 16-bit___ 32-bit
ISA Master: ___ Yes ___ No___ 8-bit ___ 16-bit
Memory Description
Space is provided below for configuration information for two memory banks.Some EISA adapter cards have up to eight memory banks. Duplicate this sheetif there are more than two memory banks.
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
Amount of Memory: ___________________________
Starting Address (hex): ___________________________
Cacheable: ___ Yes ___ No
Type: ___ RAM ___ ROM
Use: ___ System ___ Expanded ___ Virtual ___ Other
DMA Channel Description
DMA channels used: ___ 0 ___ 1 ___ 2 ___ 3___ 5 ___ 6 ___ 7
Data size ___ 8-bit ___ 16-bit___ 32-bit
Timing: ___ Compatible ___ Type A___ Type B ___ Type C
Share: ___ Yes ___ No
Appendix B - EISA Configuration Worksheets
112
EISA Slot 8, cont'd
Interrupt Description
Edge-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Share: ___ Yes ___ No
Level-Triggered Interrupts
Interrupt line used: ___ IRQ3 ___ IRQ4___ IRQ5 ___ IRQ6___ IRQ7 ___ IRQ9___ IRQ10 ___ IRQ11___ IRQ12 ___ IRQ14___ IRQ15
Switch and Jumper Settings
______________________________________________________________
______________________________________________________________
______________________________________________________________
American Megatrends Enterprise-II Motherboard User's Guide
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Appendix B - EISA Configuration Worksheets
114
Appendix C
Heat Dissipation
The 50 MHz 80486DX and 66 MHz 80486DX2 arevery high performance CPUs that can rivalthe performance of any currently availableCPU, including RISC processors. However,there is an undesirable side effect to thehigh performance — the heat generated byhigh power consumption.
These CPUs can dissipate up to 5 watts ofpower. Since this power is concentrated ina small area, it is necessary to removethe heat generated by this powerconsumption. For this reason we havesupplied a heat sink with all AmericanMegatrends motherboards and CPU Cards thathave a 50 MHz 80486DX or 66 MHz 80486DX2CPU.
Since American Megatrends manufacturesonly the motherboard and CPU Card systemcomponents, it has no control overoperating factors such as air flow andambient temperature inside the computercase. The system integrator must make surethat the 50 MHz 80486DX or 66 MHz 80486DX2CPU always operates within a safeoperating temperature range.
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Heat Dissipation, Continued
Test Procedure to Assure Proper OperatingTemperatures:
1. Install the American Megatrendsmotherboard or CPU card in a fullyloaded system.
2. Install a temperature sensor (suchas a thermocouple) so that thesurface of the heat sink can bemeasured without opening the case.
3. Turn on the system and run adiagnostics utility program such asAMIDiag for at least one hour.
Expected Results
If the temperature on the surface of theheat sink is 75 degrees centigrade orbelow, there will be no problem with theoperation of the computer.
Identifying a Problem
If the temperature exceeds 75 degreescentigrade, the system integrator musttake the necessary measures to ensure thatthe CPU does not overheat.
Potential Solutions
• Install a fan to increase the airflow over the CPU. Some powersupplies may have larger or morepowerful fans.
• Install a different heat sink with agreater surface area.
Appendix C Heat Dissipation
116
• Different case styles may havebetter ventilation allowing for moreair-flow over the CPU.
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Index8042 - Gate A20 Failure 4080486SX 280487SX 2Above 1 MB Memory Test 57Adapter Card
16-Bit Card Pinout 3332-Bit EISA Card Pinout 33, 358-Bit Pinout 32
ADVANCED CMOS SETUP 55, 59Above 1 MB Memory Test 57Fast Gate A20 Options 59Floppy Drive Seek At Boot 59Hit <DEL> Message Display 57Memory Test Tick Sound 57Numeric Processor 59Password Check Option 60System Boot Up Num Lock 59System Boot Up Sequence 59Typematic Rate and Delay 56Video/Adapter ROM Shadow 60Warning Message 55
Auto Interleave 63Auto Interleave Utility 67Base 64 KB Memory Failure 40BIOS
Beep Codes 40Error Reporting 39Hard Disk Utilities 63Non-Fatal Error Messages 41POST 39POST Memory Test 44POST Phases 39
BIOS Setup 45Board Layout 10C: Drive Error 41Cables 26CMOS Display Type Mismatch 41CMOS Shutdown Register Read/Write Error 40CMOS System Options Not Set 41Configuring System 36
Index
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Index, Continued
ConnectorsJ13 Speaker Connector 27J14 Keyboard Lock 27J17 Reset Button Connector 26J18 Turbo Switch 27J19 Turbo LED 28J3 Keyboard Connector 25J6 Mouse Connector 25J7 Keyboard Connector 25J8 Floppy Disk Connector 28
CoprocessorsInstalling 19
EGA Adapters 12EISA Adapter Card
Pinout 33, 35EISA Configuration Worksheets 73EISA Expansion Slots 30-33Enterprise-II Graphic 10Fast Gate A20 59Fast Gate A20 Options 59Floppy Disk
J12 Floppy Disk Type 12J8 Connector 28Seek at Boot 59
Floppy Disk ConnectorPinout 28
Floppy Drive connectorPinout 29
Hard DiskParameter Table 53Standard CMOS Setup Configuration 52
Hard Disk Format 63Hard Disk utilities
Error messages 69When to use 64
Hard Disk Utility 63Heat Sink 2I/O Port 80h 39Installation Steps 11Installing Adapter Cards 30-33Installing the Motherboard 20Intel P23T 2Intel P24 2Interleave factor 67Jumpers 12-14
J12 Floppy Disk Type 12
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Index, Continued
Keyboard 54J7 Connector 25Lock Connector 27Processor Speed Switching 45
Layout 10Manufacturing Test Port 39Mark Bad Tracks 67Media Analysis 63Media Analysis Utility 68Memory
Installation 15Memory Card 71
Memory Configurations 72Unpacking 71Upgrading RAM 71
Memory Configuration 15, 18Memory Test Tick Sound 57Monitor 54Motherboard Layout 10Non-Fatal Error Messages 41Password
Changing a Password 61Check Option 60Using a Password 62
PinoutFloppy connector 29
POST 39Memory Test 44Phases 39
Power Supply 21Pinouts 24
Processor error 40Processor Speed 2PS1 21PS2 21PS3 21Reset Button Connector 26ROM Shadow 60SCSI 65
Index
120
Index, Continued
Setup 45Auto Configuration 49Auto Configuration, BIOS Defaults 49Auto Configuration, Power-On Defaults 50Fast Gate A20 59Key Usage 48Main Menu 49Running Setup 47Typematic Rate Delay and Typematic Rate 56Warning Message 49Warning Screen 55
SIMMs 15Installing 16Part numbers 16Selecting 15
Speaker Cable Connector 27Standard CMOS Setup 51
Date 51Hard Disk 52Keyboard 54Monitor 54Time 51
SW1 12Switch and Jumper Options 12-14Switches
SW1 12Testing System 36Testing the Motherboard 36Turbo Mode
J18 Switch Connector 27J19 Turbo LED 28
Typematic Rate and Delay 56Unpacking the Motherboard 9VGA adapters 12