American Megatrends, Inc.
Atlas PCI Pentium
EISA Motherboard
User's Guide
MAN-717
7/11/94
© 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 by copyright. No part of this publication may be reproduced, transcribed, stored in a
retrieval system, translated into any language or computer language, or transmitted in any form whatsoever without the prior written consent of the publisher,
American Megatrends, Inc.
Limited Warranty
Buyer agrees if this product proves to be defective, that American Megatrends, Inc. is only obligated to replace or refund the purchase price of this product at
American Megatrend's discretion according to the terms and conditions on the motherboard warranty card. American Megatrends shall not be liable in tort or
contract for any loss or damage, direct, incidental or consequential. Please see the Warranty Registration Card shipped with this product for full warranty
details.
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 this product or the support materials provided with the product.
Trademarks
Intel, Pentium, and Overdrive are registered trademarks of Intel Corporation.
MS-DOS, Xenix, and Microsoft are registered trademarks of Microsoft Corporation. Microsoft Windows and Windows NT are trademarks of Microsoft Corporation.
SMC is a registered trademark of SMC Corporation.
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Revision History
7/11/94 Initial release.
Table of Contents
1 System Overview
Features
...............................................................................................................................................................................
2 Specifications
Atlas PCI Motherboard Dimensions
Onboard I/O
...............................................................................................................................................................
3 PCI Local Bus
4 Installation
Unpacking the Motherboard
Installation Steps
Step 1 Set Switches and Jumpers
Step 2 Install System Memory
Step 3 Install the Motherboard
Step 4 Connect the Power Supply
Step 5 Connect the Keyboard Cable
Step 6 Connect the Mouse
Step 7 Connect Cables
Step 8 Connect Onboard I/O
Step 9 Install Floppy Drive
Step 10 Install Hard Disk
Step 11 Install Adapter Cards
Step 12 Test and Configure
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5 WinBIOS Power-On Self Test
Beep Codes
WinBIOS Displayed Error Messages
WinBIOS Displayed Error Messages
Other Messages
EISA NMI Messages
WinBIOS Configuration Summary Screen
POST Memory Test
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1
2
3
8
9
11
15
15
17
17
22
4
6
32
33
34
40
45
47
48
55
1
2
3
4
5
5
6
6
6 WinBIOS Setup
Starting WinBIOS Setup
7 Flash ROM Programming
A Temperature and Power
Temperature Ranges
Humidity
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B EISA Configuration Worksheets
Index
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9
9
37
45
45
45
47
60
Atlas PCI Pentium EISA Motherboard User's Guide
Preface
To the OEM
Technical Support
Thank you for purchasing the high performance American Megatrends Atlas PCI Pentium EISA motherboard.
This product is a state of the art Pentium-based motherboard that includes the famous WinBIOS. It is
assumed that you have also licensed the rights to use the American Megatrends documentation for the
American Megatrends Atlas PCI motherboard. This manual was written for the OEM to assist in the proper
installation and operation of this motherboard. This manual describes the specifications and features of the
Atlas PCI motherboard. It explains how to assemble a system based on the Atlas PCI motherboard and how to
use the WinBIOS that is specifically designed for this motherboard.
This manual is not addressed to the computer owner who purchases this motherboard or a computer with this
motherboard. It is assumed that you, the computer manufacturer, will use this manual as a sourcebook of
information, and that parts of this manual will be included in the computer owner's manual.
If an American Megatrends motherboard fails to operate as described or you are in doubt about a
configuration option, please call technical support at 770-246-8645.
Preface
Preface,
Packing Slip
Continued
You should have received:
an American Megatrends Atlas PCI Pentium EISA motherboard,
•
the Atlas PCI Pentium EISA Motherboard User's Guide,
•
a diskette containing the American Megatrends ECU and EISA configuration files.
•
the American Megatrends ECU User's Guide, and
•
the AMIFlash Utility program.
•
a Warranty Card for the Atlas PCI Pentium EISA motherboard,
•
two 10-pin to DB9 connector serial cables (American Megatrends Part Number CBL-SUB-1-10), and
•
one 26-pin to DB25 connector parallel cable (American Megatrends Part Number CBL-SUB-2-25).
•
The cable that attaches to the PS/2 mouse connector is the same as the serial cables listed above (American
Megatrends Part Number CBL-SUB-1-10).
If using the Green PC features of this motherboard, you will also need a 10-pin to 25-pin Green PC cable
(American Megatrends Part Number CBL-SUB-12-10) that is not supplied with the motherboard.
Call the American Megatrends Sales Department at 800-828-9264 to order the serial cables or Green PC
cable.
Atlas PCI Pentium EISA Motherboard User's Guide
American Megatrends BBS
The BBS permits OEMs, VARs, and system integrators to access technical information about motherboard
and BIOS products. Product Engineering Change Notices, Tech Tips, Technical Notes, and complete
technical manuals are available on the BBS.
Data Transmission Rates
The BBS automatically handles modems with data transmission rates from 1,200 to 14,400 bps.
If using an HST modem, call 770-246-8780.
If using a non-HST modem, call 770-246-8782.
BBS Phone Numbers
The following table lists the characteristics of the BBS phone numbers. The BBS requires no parity, 8 data
bits, and 1 stop bit.
Phone
Characteristics
Number
770-246-8780 Supports HST and v.42.
770-246-8781 Supports HST and v.42.
770-246-8782 Dual standard. Can handle 2400 or 9600 bps.
Supports v.32 and v.42. Can handle up to 14,400
baud.
770-246-8783 Supports v.32 and v.42.
Preface
1 System Overview
The American Megatrends Atlas PCI (Peripheral Component Interconnect) is a full AT-size PCI EISA
motherboard that supports a P54C Pentium® CPU operating at 60 or 66 MHz externally and 90 or 100 MHz
internally.
This motherboard has three PCI Local Bus expansion slots. All three slots can be used for bus mastering PCI
adapter cards.
The motherboard also has six EISA bus mastering expansion slots. The motherboard height restrictions are
shown below.
Atlas PCI Pentium EISA Motherboard User's Guide
Features
The American Megatrends Atlas PCI Pentium EISA motherboard has the following features:
Supports 256 or 512 KB of direct-mapped write-back (or write-through) secondary cache memory.
•
Supports from 2 to 192 MB of non-interleaved system memory via two to six x 36 single-sided or
•
double-sided SIMMs on the motherboard.
Supports up to four IDE hard disk drives through two IDE connectors on the motherboard on the fast PCI
•
local bus. IDE Modes 0, 1, 2, and 3 with 32-bit read/write, and write posting are supported.
Includes an SMC® FDC37C665 100-pin PQFP Universal Peripheral Controller that supports two
•
National Semiconductor NS16C550 serial ports, a parallel port with ECP (Extended Capabilities Port)
and EPP (Enhanced Parallel Port) support, and a floppy controller,
Includes a 128 KB flash EPROM for the system BIOS.
•
Includes a battery-backed Real Time Clock with 114 bytes of CMOS RAM to store system configuration
•
data. It also has an additional 8 KB of EISA Extended CMOS RAM.
Has six bus mastering EISA and three PCI bus mastering expansion slots. All expansion slots are bus
•
mastering slots.
Chapter 1 System Overview
2 Specifications
The American Megatrends Atlas PCI is a full AT-size motherboard. The motherboard has an onboard fast
IDE controller on the PCI local bus that supports IDE Modes 0, 1, 2 and 3 with 32-bit read/write, readahead,
and write posting. The motherboard has an I/O Controller that supports floppy drives, serial ports, and a
parallel port with ECP and EPP capabilities.
Motherboard Frequency
The Atlas PCI motherboard operates at either High or Low speed. High speed is the same as the speed of the
CPU mounted on the motherboard (60/66 or 90/100 MHz). Low speed is approximately the same speed as
that of an 8 MHz IBM® AT. Low speed is achieved by emulation.
The end user can select the frequency by:
selecting High or Low speed via an option in WinBIOS Setup Advanced Setup,
•
after system boot, pressing <Ctrl> <Alt> <-> for Low speed or <Ctrl> <Alt> <+> for High speed, or
•
after system boot, pressing the hardware Turbo switch mounted on the computer chassis.
•
Socketed CPU
The Atlas PCI Pentium EISA motherboard uses a 3.3V 90 or 100 MHz Intel P54C Pentium CPU operating
externally at 60 or 66 MHz in a ZIF socket.
Atlas PCI Pentium EISA Motherboard User's Guide
Specifications,
Continued
Internal Cache Memory
The Pentium CPU includes both an 8 KB code cache and an 8 KB write-back data cache referred to as L1
internal cache memory. All onboard memory can be stored in internal cache memory on the CPU.
Internal cache memory can be enabled via Advanced Setup in WinBIOS Setup.
Secondary Cache Memory
The Atlas PCI motherboard has 256 KB or 512 KB of factory-installed L2 secondary (external) cache
memory. The cache memory is direct-mapped programmable in write-through or write-back mode. The cache
memory chips are:
256 KB L2 cache memory uses eight 32 KB x 8 standard SRAMs. Cache data
256 KB L2 cache memory uses four 32 KB x 18 burst SRAMs operating at 9 ns.
512 KB L2 cache memory uses 64 KB x 18 asynchronous SRAMs. The cache data
512 KB L2 cache memory uses four 64 KB x 18 burst SRAMs operating at 9 ns.
4 KB L2 cache memory Tag
Cache Memory Description
RAM operates at 15 ns.
RAM operates at 15 ns.
Integrated into the chipset.
RAM
The L2 secondary cache memory supports CPU burst reads and writes. The L2 secondary cache memory can
be implemented in synchronous or asynchronous burst SRAMs.
The Intel Pentium is supported in both write-back and write-through modes. The external cache memory can
also be in write-back or write-through mode.
L2 Secondary (External)l cache memory can be enabled via WinBIOS Setup Advanced Setup.
Chapter 2 Specifications
Specifications,
Continued
Cacheable Memory
All of system memory on the motherboard (up to 192 MB) can be read from or written to both L1 internal
cache memory and L2 secondary cache memory.
Non-Cacheable Memory
Up to two blocks of system memory can be defined as non-cacheable. The contents of these areas cannot be
read from or written to either L1 or L2 cache memory. The size of this area can be 64 KB to 512 KB and is
defined through WinBIOS Setup Advanced Setup.
Storing BIOS ROM in Cache Memory
Both the contents of the system BIOS ROM and the video BIOS ROM can be read from or written to both L1
and L2 cache memory. The contents of both system BIOS ROM and the video BIOS ROM can also be writeprotected. Options in WinBIOS Setup Advanced Setup control these features.
Chipset
Other Connectors
The Atlas EISA motherboard uses the Intel Mercury chipset and EISA chipset consisting of the following
ICs: 82434LX PCI, Cache, and Memory Controller (PCMC), 82433LX Local Bus Accelerator (LBX),
82375EB PCI to EISA bridge (PCEB), and the 82374EB EISA System Controller (ESC).
a four-pin berg connector attaches to a speaker,
•
a two-pin connector connects a hardware reset switch,
•
a five-pin connector connects a keyboard lock switch,
•
a two-pin connector connects a turbo switch
•
there are three 5V six-pin power supply connectors and two 3.3V power supply connectors,
•
a 3.3V voltage regulator provides CPU power,
•
a 34-pin dual inline header connects the floppy drives,
•
two 40-pin headers connect up to four IDE drives on the PCI bus, and
•
two 10-pin serial connectors and a 26-pin parallel connector.
•
Atlas PCI Pentium EISA Motherboard User's Guide
Specifications,
Continued
Onboard System Memory
The Atlas PCI motherboard supports from 2 to 192 MB of system memory via six 72-pin SIMM sockets.
•
Either single-sided or double-sided SIMMs can be used.
The system BIOS automatically detects and configures all onboard DRAM memory.
•
Slave memory devices can be added on the PCI bus and the EISA bus for additional memory.
•
The Atlas PCI motherboard can have two, four, or six 36 SIMMs in six SIMM sockets.
•
The Atlas PCI motherboard supports 256 KB x 36, 1 MB x 36, and 4 MB x 36 single-sided SIMMs and
•
512 KB x 36, 2 MB x 36, and 8 MB x 36 double-sided SIMMs.
70 ns fast page mode DRAMs are required for onboard DRAM. Parity is checked on all system memory
•
reads to ensure data integrity. The memory architecture is paged and non-interleaved.
WinBIOS Setup Chipset Setup provides two options that permit the end user to configure up to two holes
•
in memory. These holes will be available to devices on the PCI bus.
System Memory Buffers
The Atlas PCI Pentium EISA motherboard has five integrated write posting and read prefetch buffers:
Type of Memory Buffer Buffer Size
CPU to memory posted write buffer four quadwords deep
PCI to memory posted write buffer eight quadwords deep
PCI to memory read prefetch buffer four quadwords deep
CPU to PCI posted write buffer four doublewords deep
CPU to PCI read prefetch buffer four doublewords deep
Chapter 2 Specifications
Specifications,
Continued
PCI Expansion Slots
The motherboard has three bus mastering PCI slots operating at 30 or 33 MHz synchronous with the CPU
clock.
EISA Expansion Slots and Bus Speed
The motherboard has six EISA expansion slots operating at 7.5 or 8.0 MHz.
CMOS RAM
The motherboard has 114 bytes of CMOS RAM on the Real Time Clock. The contents of CMOS RAM are
configured by WinBIOS Setup, resident with the system BIOS on the Flash EPROM. There is also an
additional 8 KB of EISA Extended CMOS RAM.
System BIOS
The system BIOS resides on a 128 KB boot block flash ROM. The system BIOS can be updated through the
AMIFlash software utility. The system BIOS is shadowed to RAM and can be read from or written to L1 and
L2 cache memory, as controlled through Advanced Setup.
Adaptor ROM BIOS
The Adaptor ROM BIOS between C0000h - EFFFFh can be shadowed to RAM. The contents can be read
from or written to secondary cache memory and the contents can be write-protected with 16 KB granularity
via WinBIOS Setup Advanced Setup.
SCSI Support
SCSI support is optional. The motherboard may have an NCR 53C810 PCI SCSI controller, if the customer
orders it.
Atlas PCI Pentium EISA Motherboard User's Guide
Specifications,
Continued
Mouse
The Atlas PCI motherboard supports a PS/2- compatible mouse interface through a 10-pin dual-inline
connector.
Keyboard
The standard Atlas PCI motherboard has a five-pin DIN keyboard connector.
Green PC Monitor Connector
The Atlas PCI motherboard has a 10-pin dual-inline connector for Green PC monitor support.
Atlas PCI Motherboard Dimensions
The Atlas PCI motherboard is approximately 12.1 inches wide by 13.8 inches long (the standard full AT®
size with similar mounting hole locations). The following graphic shows the dimensions and height
restrictions.
Chapter 2 Specifications
Onboard I/O
Universal Peripheral Controller
The Atlas PCI EISA motherboard has an SMC FDC37C665 Universal Peripheral Controller that supports up
to two floppy drives (360 KB, 1.2 MB, 720 KB, 1.44 MB, or 2.88 MB), two serial ports (using National
Semiconductor 16C550s), and one parallel port with ECP (Extended Capabilities Port) and EPP (Enhanced
Parallel Port) capability.
Onboard PCI IDE Support
The onboard IDE is on the PCI bus. The IDE controller supports up to four IDE hard disk drives through two
IDE connectors on the motherboard.
The IDE controller supports IDE Mode 0, Mode 1, Mode 2, and Mode 3. It also supports IDE read data
prefetch and write posting. The WinBIOS supports 32-bit data transfers as well as the following cycle times
for each IDE Mode.
IDE Mode Cycle Time (in nanoseconds)
0 600
1 383
2 240
3 180
PCI IDE Support on the PCI Expansion Slots
PCI IDE adapter cards are supported on all PCI expansion slots.
Atlas PCI Pentium EISA Motherboard User's Guide
Chapter 2 Specifications
3 PCI Local Bus
The PCI specification provides the electrical specifications for peripheral chip makers and the logic
requirements for a PCI Controller. PCI also defines a local bus standard and a standard common I/O
component-level interface.
The Atlas PCI EISA Motherboard conforms to the Intel PCI specifications. The PCI Local Bus Specification
is a standard set of interface, architecture, timings, electrical, and physical specifications that permits all PCI
Local Bus products to be totally interchangeable. PCI is a multiplexed extension of the CPU bus. In PCI, the
CPU bus control mechanisms have been extended to optimize I/O support.
PCI is a specification for a local bus standard. PCI establishes a local bus standard in which a large variety of
I/O components can be directly connected without using any glue logic.
What PCI Accomplishes
PCI is a way to physically interconnect highly integrated peripheral components and processor/memory
systems.
PCI Features
Up to ten PCI loads can be used in the same system on the PCI bus, including the PCI Controller and an
expansion bus controller for EISA, ISA, or MCA®. PCI decouples the CPU from the expansion bus.
The local bus defined in the current PCI specification works at 33 MHz and can use either a 32-bit or 64-bit
data connection path to the CPU.
Atlas PCI Pentium EISA Motherboard User's Guide
Continued
PCI,
PCI Features
is processor-independent,
•
has a multiplexed address, command, and data bus and supports burst mode operation on reads and
•
writes,
runs synchronous with the CPU at speeds up to 33 MHz,
•
has a maximum data transfer rate of 120 MBs (with a peak rate of 132 MBs on a 32-bit data path),
•
has a maximum data transfer rate of 240 MBs (with a peak rate of 264 MBs on a 64-bit data path),
•
has an optional 64-bit data path that is transparently interoperable with the 32-bit data path,
•
has low latency random accesses (about 60 ns write access latency) to slave registers from a PCI bus
•
master on the PCI bus,
is capable of full concurrency with the processor and PCI bus masters,
•
has full multimaster capability, allowing any PCI Master peer-to-peer access to any PCI slave,
•
has hidden and overlapped central arbitration,
•
has a low pin count (master - 47; slave - 45),
•
has address and data parity, and
•
uses three physical address spaces: 32-bit memory, 32-bit I/O, and a 256 byte-per-agent configuration
•
space.
Chapter 3 PCI
Continued
PCI,
PCI Diagram
A typical PCI motherboard system block diagram follows.
Buffered Reads and Writes
The PCI Controller buffers reads and writes between the memory and the CPU and between PCI peripheral
devices.
PCI Component Classes
PCI components must be one of three classes: bus master, slave, or master/slave combination.
Bus Mastering
PCI devices can be bus masters, slaves, or a combination of bus master and slave.
Atlas PCI Pentium EISA Motherboard User's Guide
Continued
PCI,
Concurrent Operation
The CPU in a PCI system runs concurrently with PCI bus mastering peripherals. Although bus mastering
peripheral devices are arbitrated, significant improvements in data transfer rates can be achieved without
splitting resource utilization between the CPU and a bus mastering device. Peripheral devices can operate at
speeds up to 33 MHz in a PCI environment.
Burst Mode
The PCI specification also provides for burst mode of any length for both reads and writes.
Multiplexing
PCI is a multiplexed bus. Multiplexing allows more than one signal to be sent on the same electrical path. The
PCI control mechanisms have been modified and extended to optimize I/O support.
Using PCI Adapter Cards
The Atlas PCI EISA motherboard has three PCI expansion slots. The PCI expansion slots can accept any
adapter card that complies with the PCI Revision 2.0 specification.
P16 (Slot E), P17 (Slot F), and P18 (Slot D) are all bus master PCI slots.
Chapter 3 PCI
4 Installation
Unpacking the Motherboard
Step Action
1 Inspect the cardboard carton for obvious damage. If damaged, call
2 Perform all unpacking and installation procedures on a ground-
3 Inside the carton, the motherboard is packed in an anti-static bag
4 Inspect the motherboard for damage. Press down on all ICs
5 If the motherboard is undamaged, it is ready to be installed.
Technical Support at 404-246-8645. Leave the motherboard in its
original packing.
connected anti-static mat. Wear an anti-static wristband, grounded
at the same point as the anti-static mat or use a sheet of
conductive aluminum foil grounded through a 1 megohm resistor
instead of the anti-static mat. Similarly, a strip of conductive
aluminum foil wrapped around the wrist and grounded through a
1 megohm resistor serves the same purpose as the wristband.
and sandwiched between sheets of sponge. Remove the sponge
and the anti-static bag. Place the motherboard on a grounded
anti-static surface component side up. Save the original packing
material in case of reshipment.
mounted in sockets to verify proper seating. Do not apply power
to the motherboard if it has been damaged.
Atlas PCI Pentium EISA Motherboard User's Guide
Motherboard Layout
Chapter 4 Installation
Installation Steps
Step Action Turn to
1 Set switch and jumper options Page 17
2 Install memory Page 22
3 Install motherboard Page 4
4 Connect the power supply Page 6
5 Connect the keyboard Page 32
6 Connect the mouse Page 33
7 Connect cables Page 34
8 Connect onboard I/O Page 40
9 Install floppy drive Page 45
10 Install hard disk drive Page 45
11 Install adapter cards Page 47
12 Test and configure Page 55
This motherboard contains sensitive electronic components which
can be easily damaged by static electricity. Follow the instructions
carefully to ensure correct installation and to avoid static damage.
Step 1 Set Switches and Jumpers
Warning
Set all user-configurable jumpers and switches before installing the motherboard in the chassis. There is one
user-configurable switch and seven jumpers:
U86 Multipurpose switch
J11 Parallel Port IRQ Select
J10 Enhanced Parallel Port DMA Select Request
J9 Enhanced Parallel Port DMA Select Acknowledge
J13 Select Password LED
J7 IRQ 15 for Secondary IDE
J18 Flash BIOS Programming Voltage
J13 Green PC LED Select
Atlas PCI Pentium EISA Motherboard User's Guide
Step 1 Set Switches and Jumpers,
Switch U86
U86 is an eight-position DIP switch that controls CPU speed, flash EPROM programming, diagnostic testing,
synchronous SCSI, and the SCSI mode. See the graphic on page 16 for the location of U86. Switch positions
3, 7, and 8 are unused.
U86 Switch 2 Reprogram Flash ROM
Set U86 switch 2 ON only when American Megatrends has sent you a floppy disk with a new ROM file to
reprogram the Flash EPROM.
CPU Switch 2
Reprogram the Flash ROM from
floppy disk.
Normal operation (Factory setting) OFF
U86 Switch 4 Manufacturing Test
U86 switch 4 is OFF. Do not change this switch position.
U86 Switches 3, 5, 6, 7, and 8
U75 switches 3, 5, 6, 7, and 8 are reserved.
Continued
ON
Chapter 4 Installation
Step 1 Set Switches and Jumpers,
J11 Parallel Port IRQ Select
J11 is a three-pin header that sets the parallel port IRQ. See page 16 for the J11 location. A drawing of J11
with the shorting bridge installed is shown below.
Pin Settings LPT1
Short Pins 1-2 IRQ7 (Factory setting)
Short Pins 2-3 IRQ5
Continued
J10 Select Enhanced Parallel Port DMA Request
J10 is a three-pin header that selects the parallel port DMA request line. See page 16 for the J10 location. A
drawing of J10 with the shorting bridge installed is shown below.
Pin Settings DMA Channel
OPEN Parallel Port is in Normal Mode (Factory
Short Pins 1-2 DRQ1
Short Pins 2-3 DRQ3
setting)
Atlas PCI Pentium EISA Motherboard User's Guide
Step 1 Set Switches and Jumpers,
Continued
J9 Select Enhanced Parallel Port DMA Acknowledge
J9 is a three-pin header that selects the parallel port DMA Acknowledge line. See page 16 for the J9 location.
A drawing of J9 with the shorting bridge installed is shown below.
Pin Settings DMA Channel
OPEN Parallel Port is in Normal Mode (Factory
Short Pins 1-2 DACK1
Short Pins 2-3 DACK3
setting)
Chapter 4 Installation
Step 1 Set Switches and Jumpers,
J13 Password LED Select
J13 is a three-pin berg that selects the Password LED. See page 16 for the J13 location. A drawing of J13
with the shorting bridge installed is shown below.
The end user must enter the correct system password if the Password LED is blinking. If the password LED
blinks, the system has experienced no system activity during the length of time specified in Power
Management Setup.
The WinBIOS system password feature and WinBIOS Power Management feature must be enabled before
the Password LED will blink when the correct system password must be entered by the end user.
Pin Settings LED selected
Short Pins 1-2 Front panel power LED is Password
Short Pins 2-3 Separate Password LED using J13
Continued
LED.
(Factory setting).
J7 IRQ15 for Secondary IDE
J7 is a two-pin berg that passes the secondary IDE interrupt to IRQ 15. Place a shorting bridge on the two
pins of this jumper only if the secondary IDE drive is connected to the secondary IDE connector. The factory
setting is J7 OPEN.
Atlas PCI Pentium EISA Motherboard User's Guide
Step 1 Set Switches and Jumpers,
J18 Select Flash EPROM Voltage
J18 is a three-pin berg that selects voltage level supplied to the Flash EPROM in U85. See page 16 for the
J18 location. A drawing of J18 with the shorting bridge installed is shown below.
Pin Settings LED selected
Short Pins 1-2 5 volts
Short Pins 2-3 12 volts (Factory setting)
Step 2 Install System Memory
The main memory subsystem on the Atlas PCI motherboard consists of six 32-bit 72-pin SIMM sockets
arranged in three memory banks. Each bank of memory consists of two sockets. Either two, four, or six
SIMMs must be installed; the memory banks are always non-interleaved.
You can use 256 KB x 36, 512 KB x 36, 1 MB x 36, 2 MB x 36, 4 MB x 36, or 8 MB x 36 bit SIMMs. The
Atlas PCI motherboard uses fast page mode SIMMs operating at 70 ns (RAS access time).
Continued
Chapter 4 Installation
Step 2 Install System Memory,
Motherboard System Memory Configurations
Continued
BANK1 BANK2 BANK3 Memory reported by
256 KB x 36 256 KB x 36 None None None None 1,664 KB
256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 None None 3,712 KB
256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 5,760 KB
256 KB x 36 256 KB x 36 512 KB x 36 512 KB x 36 5,760 KB
256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 512 KB x 36 512 KB x 36 7,808 KB
256 KB x 36 256 KB x 36 1 MB x 36 1 MB x 36 9,856 KB
256 KB x 36 256 KB x 36 2 MB x 36 2 MB x 36 18,048 KB
256 KB x 36 256 KB x 36 4 MB x 36 4 MB x 36 34,442 KB
256 KB x 36 256 KB x 36 8 MB x 36 8 MB x 36 67,200 KB
256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 1 MB x 36 1 MB x 36 11,904 KB
256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 2 MB x 36 2 MB x 36 20,096 KB
256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 4 MB x 36 4 MB x 36 36,480 KB
256 KB x 36 256 KB x 36 256 KB x 36 256 KB x 36 8 MB x 36 8 MB x 36 69,248 KB
512 KB x 36 512 KB x 36 None None None None 3,712 KB
512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 None None 7,808 KB
512 KB x 36 512 KB x 36 1 MB x 36 1 MB x 36 11,904 KB
512 KB x 36 512 KB x 36 2 MB x 36 2 MB x 36 20,096 KB
512 KB x 36 512 KB x 36 4 MB x 36 4 MB x 36 36,480 KB
512 KB x 36 512 KB x 36 8 MB x 36 8 MB x 36 69,248 KB
512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 256 KB x 36 256 KB x 36 9,856 KB
512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 11,904 KB
512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 1 MB x 36 1 MB x 36 16,000 KB
512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 2 MB x 36 2 MB x 36 24,192 KB
512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 4 MB x 36 4 MB x 36 40,576 KB
512 KB x 36 512 KB x 36 512 KB x 36 512 KB x 36 8 MB x 36 8 MB x 36 73,344 KB
1 MB x 36 1 MB x 36 None None None None 7,808 KB
1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 None None 16,000 KB
1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 256 KB x 36 256 KB x 36 18, 048 KB
1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 512 KB x 36 512 KB x 36 20, 096 KB
1 MB x 36 1 MB x 36 2 MB x 36 2 MB x 36 None None 24,192 KB
1 MB x 36 1 MB x 36 4 MB x 36 4 MB x 36 40,576 KB
1 MB x 36 1 MB x 36 8 MB x 36 8 MB x 36 73,344 KB
1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 24,192 KB
1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 2 MB x 36 2 MB x 36 32,384 KB
1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 4 MB x 36 4 MB x 36 48,768 KB
1 MB x 36 1 MB x 36 1 MB x 36 1 MB x 36 8 MB x 36 8 MB x 36 81,536 KB
2 MB x 36 2 MB x 36 None None None None 16,000 KB
2 MB x 36 2 MB x 36 2 MB x 36 2 MB x 36 256 KB x 36 256 KB x 36 34, 442 KB
2 MB x 36 2 MB x 36 2 MB x 36 2 MB x 36 512 KB x 36 512 KB x 36 36, 480 KB
2 MB x 36 2 MB x 36 2 MB x 36 2 MB x 36 1 MB x 36 1 MB x 36 40,576 KB
2 MB x 36 2 MB x 36 2 MB x 36 2 MB x 36 2 MB x 36 2 MB x 36 48,768 KB
2 MB x 36 2 MB x 36 2 MB x 36 2 MB x 36 4 MB x 36 4 MB x 36 65,152 KB
2 MB x 36 2 MB x 36 2 MB x 36 2 MB x 36 8 MB x 36 8 MB x 36 97,920 KB
4 MB x 36 4 MB x 36 None None None None 32,384 KB
4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 None None 65,152 KB
4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 256 KB x 36 256 KB x 36 67, 200 KB
4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 512 KB x 36 512 KB x 36 69, 248 KB
4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 1 MB x 36 1 MB x 36 73,344 KB
4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 2 MB x 36 2 MB x 36 81,536 KB
4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 97,920 KB
4 MB x 36 4 MB x 36 4 MB x 36 4 MB x 36 8 MB x 36 8 MB x 36 130,668 KB
8 MB x 36 8 MB x 36 None None None None 65,152 KB
8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 None None 130,688 KB
8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 256 KB x 36 256 KB x 36 132,736 KB
8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 512 KB x 36 512 KB x 36 134,784 KB
8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 1 MB x 36 1 MB x 36 138,880 KB
8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 2 MB x 36 2 MB x 36 147,072 KB
8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 4 MB x 36 4 MB x 36 163,456 KB
8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 8 MB x 36 192,224 KB
WinBIOS
Atlas PCI Pentium EISA Motherboard User's Guide
Step 2 Install System Memory,
DRAM Memory Parameters
Parameter Specification
Page Mode FAST
Refresh CAS before RAS
t
CAC
t
RAC
t
AA
t
RP
t
CPA
Continued
20 ns
≤
70 ns
≤
35 ns
≤
50 ns
40 ns
≤
Atlas PCI Pentium EISA Motherboard User's Guide
Step 2 Install System Memory,
SIMM Part Numbers
Type Manufacturer Part Number
256 KB x 36 Micron® MT9D25636M-7
Mitsubishi® MH26636BJ-7
Motorola® MCM36256S-70
Oki® MSC2320A-70YS9
PNY® P36256-70
Samsung® KMM536256B-7
512 KB x 36 Samsung KMM536512W-7 (single-sided)
Motorola MCM36512S-70
1 MB x 36 Micron MT12D136M-7
Mitsubishi MH1M36ADJ-7
PNY P361000-70
Motorola MCM36100AS-70
Oki MSC2355-70YS12
Samsung KMM5361000AV-7
2 MB x 36 Micron MT24D236M-7
Samsung KMM5362000A-7
Motorola MCM36200S70
4 MB x 36 Micron MT12D436M-7
Mitsubishi MH4M36SAJ-7
Motorola MCM36400S-70
PNY P364000-70
Samsung KMM5364100-7
8 MB x 36 Motorola MCM36800S-70
PNY P368000-707
Samsung KMM5368100-7
Continued
KMM536512W3-7 (double-sided)
Chapter 4 Installation
Step 2 Install System Memory,
Installing SIMMs
Six SIMM sockets are located near the power connector on the motherboard. These sockets can be
filled with either 256 KB x 36, 512 KB x 36, 1 MB x 36, 2 MB x 36, 4 MB x 36, or 8 MB x 36
SIMMs. Place the motherboard on an anti-static mat. With the component side of the SIMM facing
you, firmly push the SIMM into the socket at a 45 degree angle, then push it up to a vertical
position. When properly inserted, the SIMM clicks into place as the latching pins engage. See the
following figure.
Normally, the x 36 SIMMs look like this:
Reporting Memory
Continued
The system memory configuration is reported by WinBIOS as it boots and again when the
WinBIOS System Configuration Screen is displayed just before the operating system is booted.
The memory reported by WinBIOS is 384 KB less than the total amount of memory installed in
the system because the memory between 640K and 1024K can be used to shadow the video,
system, and other adapter BIOS.
Atlas PCI Pentium EISA Motherboard User's Guide
Step 3 Install the Motherboard
The mounting hole pattern on the motherboard is the same as the mounting hole pattern on most
full-size AT boards. Standoffs and mounting screws are not supplied.
Chapter 4 Installation
Step 3 Install the Motherboard,
Continued
Step
Action
1 Wear an anti-static wristband when performing this procedure.
2 Place the chassis on an anti-static mat. Connect the chassis to ground
to avoid static damage during installation. Connect an alligator clip
with a wire lead to any unpainted part of the chassis. Ground the
other end of the lead to the same place that the mat and the wristband
you are wearing are grounded to.
3 Rotate the chassis so that the front is to the right and the rear is to the
left. Mount the motherboard on the side facing you. The power
supply is mounted at the far end of the chassis.
4 Push four nylon standoffs from the solder side of the motherboard
into the holes provided for them. The standoffs lock in place. Find
the slots provided for the standoffs on the chassis. Hold the
motherboard, component-side up, with the edge with the standoffs
toward you and the edge with the power supply connector away from
you. The edge connectors for the adapter cards should be to the left.
5 Carefully slide the motherboard into the chassis. Make sure that the
standoffs fit the standoff slots. The motherboard should not slide if
the standoffs are properly locked. The motherboard should also rest
level with the chassis. The far edge should fit the slots in the plastic
clips.
6 Place the two mounting screws in the proper holes and tighten. If
necessary, shift the motherboard slightly to align the mounting holes
on the motherboard with the holes on the chassis. See page 16 and
the previous page.
The computer case manufacturer may supply installation instructions. If so, follow those
procedures as well as the above procedures.
Atlas PCI Pentium EISA Motherboard User's Guide
Step 4 Connect the Power Supply
The power supply should match the physical configuration of the chassis. Make sure that the power switch is
Off before assembly. Make sure that the proper voltage has been selected before connecting power cables.
Power supplies often have a wide range of voltages and must be set (usually via a switch) to the proper range.
Use at least a 230 watt power supply that has built-in filters to suppress EMI. The Atlas PCI Pentium EISA
motherboard has five power connectors, shown on the motherboard drawing below. P3 and P10 are standard
ISA motherboard power connectors. P2, P15, and P14 are auxiliary connectors.
Connect Standard Power Cables to P3 and P10
Attach the standard EISA motherboard power supply cables to P3 and P10 on the motherboard. EISA power
supplies have two 6-pin connectors (P3 and P10). The 6-pin cable with 3 red wires and 2 black wires is
connected to P3. The 6-pin cable with the orange line to Pin 1 is connected to P10, as shown below. P2 is an
auxiliary power supply connector that can be used for additional power needs. P15 and P14 are 3.3 volt
connectors for PCI adapter cards.
P14 and P15 are not 5V power connectors.
Caution
Chapter 4 Installation
Step 4 Connect the Power Supply,
Power Supply Connectors are Keyed
The power connectors are keyed to prevent incorrect installation. The keys on the connector must be cut to fit
on some power supplies, as shown below.
P10 Pinout
Pin Description
1 Power Good (Orange wire)
2 +5V VCC (Red wire)
3 +12 Volts (Yellow wire)
4 -12 Volts (Blue wire)
5 Ground (Black wire)
6 Ground (Black wire)
Continued
Chapter 4 Installation
Step 4 Connect the Power Supply,
P3 Pinout
P15 Pinout
Continued
Pin Description
1 Ground (Black wire)
2 Ground (Black wire)
3 -5 Volts (White wire)
4 +5V VCC (Red wire)
5 +5V VCC (Red wire)
6 +5V VCC (Red wire)
Pin Description
1 3.3V Vcc (Orange wire)
2 3.3V Vcc (Orange wire)
3 3.3V Vcc (Orange wire)
4 Ground (Black wire)
5 Ground (Black wire)
6 Ground (Black wire)
P14 Pinout
Pin Description
1 Ground (Black wire)
2 Ground (Black wire)
3 Ground (Black wire)
4 3.3V (Orange wire)
5 3.3V (Orange wire)
6 3.3V (Orange wire)
Atlas PCI Pentium EISA Motherboard User's Guide
Step 4 Connect the Power Supply,
P2 Pinout
Pin Description
Step 5 Connect the Keyboard Cable
The keyboard connector is a 5-pin DIN socket labeled KEYBRD and P13 on the motherboard. Attach a
standard AT-compatible keyboard cable. A 5-pin DIN to 6-pin mini DIN converter is needed to connect a
PS/2-type keyboard.
Continued
1 Ground
2 Ground
3 Ground
4Red
5Red
6Red
Pin Assignments
1 Keyboard clock
2 Keyboard data
3 Not used
4 Ground
5VCC
Chapter 4 Installation
Step 6 Connect the Mouse
The American Megatrends Atlas PCI Pentium EISA motherboard has two types of PS-2-type mouse
connectors:
a standard 6-pin miniDIN plug (P12), and
•
a 10-pin berg connector (P1).
•
You cannot use both mouse connectors simultaneously.
P1 is a 10-pin berg connector that attaches to a PS/2-compatible mouse via a standard serial cable. P12 is a
six-pin miniDIN socket (see below). P12 accepts a PS/2-compatible mouse. The mouse connectors are next to
the keyboard connector. Attach a customized serial cable from the mouse connector to a DB9 serial port
connector. You can order this cable from the American Megatrends Sales Department (404-263-8181). Ask
Cable Assembly DB9, Male, 10-Pin,
for
connector position is shown above. The six-pin miniDIN pinout, P1 (10 pin) pinout and P1 is shown below.
part number
Pin Signal
Description
1 Mouse data
2N/A
3 Ground
4VCC
5 Mouse clock
6 Not used
CBLSUB1-10.
P1 Pin 10 should be cut. The
Pin Signal Description Pin Signal Description
1 Mouse clock 6 N/C
2N/C7N/C
3N/C8Vcc
4 N/C 9 Mouse data
5 Ground 10 N/C
Atlas PCI Pentium EISA Motherboard User's Guide
Step 7 Connect Cables
When attaching chassis connectors to the motherboard, make sure you connect the correct connector end.
Most connector wires are color-coded. Match the color of the wires leaving the switch or LED to the same
pin on the connector end. There may be more than one connector with the same color-coded wires. If so,
follow the wire to the switch or LED.
Pin 1 of all connectors can be determined easily. Each jumper is surrounded by a white line etched on the
motherboard. One end of the white line always ends in an arrow. Pin 1 is always at the pointed end of the
white line. Pin 1 is designated by a square pad on the motherboard graphic.
Connect the following cables to the motherboard:
Reset Switch cable to J16,
•
Speaker cable to P31,
•
Keyboard Lock cable to P28,
•
Turbo Switch cable to J14,
•
Onboard Diag LED is J20,
•
Turbo LED cable to J17,
•
Password LED cable to J12,
•
Sleep switch cable to J19,
•
IDE hard disk drive activity LED cable to J15.
•
Monitor power switch for Green PC mode (auxiliary power off cable) to J8,
•
extra fan connected to J1.
•
Chapter 4 Installation
Step 7 Connect Cables,
J12 Password LED
J12 is a two-pin berg that can be attached via a cable to an LED that flashes when the system has been
inactive for a specified length of time and Pins 2-3 of J13 are shorted. Pin 1 is cathode and Pin 2 is the anode.
If a Password LED is not mounted on the computer case, another LED, such as the Power LED, can be made
to flash if Pins 1-2 of J13 are shorted.
J19 Sleep Switch
Continued
J20 Diag LED
J19 is a two-pin berg that attaches to an externally-mounted switch via a two-wire cable as shown below and
to J19, the Password LED. The computer enters Sleep Mode immediately when the end user presses this
switch.
J20 is an LED mounted on the motherboard used when manufacturing diagnostic tests are running.
Atlas PCI Pentium EISA Motherboard User's Guide
Step 7 Connect Cables,
J15 IDE LED
J15 is a two-pin berg that can be attached via a cable to an LED that is lit when IDE hard disk drive activity
occurs. Pin 2 is the anode. Pin 1 is the cathode.
J17 Turbo LED
J17 is a two-pin berg that is attached via a cable to the externally mounted Turbo LED. The LED lights when
the motherboard is running at high speed. Pin 1 is cathode. Pin 2 is anode.
Continued
Chapter 4 Installation
Step 7 Connect Cables,
J16 Reset Switch Connector
J16 is a two-pin single-inline berg that is attached via a cable to an externally-mounted reset switch. When the
reset switch is pressed, a hard reset is performed. Pin 1 is ground and Pin 2 is Hard Reset.
P31 Speaker Connector
P31 is a four-pin single-inline berg that is attached via a cable to the system speaker. WinBIOS signals
hardware problems through the speaker.
Continued
Atlas PCI Pentium EISA Motherboard User's Guide
Pin Description
1VCC
2Key
3N/C
4 Data out
Step 7 Connect Cables,
P28 Keyboard Lock Connector
P28 is a five-pin single-inline berg that attaches via a cable to the keyboard lock connector. The keyboard
lock allows the user to lock the keyboard, protecting the system from unauthorized use.
The front panel LED flashes if the system WinBIOS Low Power Mode feature is enabled and Pins 1-2 of J13
are shorted.
Continued
Pin Description
1 LED power
2Key
3 Ground
4 Keyboard lock
5 Ground
J14 Turbo Switch Connector
J14 is a two-pin single-inline berg that is attached via a cable to the externally mounted bipolar Turbo switch
on the chassis. The turbo switch allows the user to set the motherboard clock speed to high or low speed.
Chapter 4 Installation
Step 7 Connect Cables,
J8 Auxiliary Power Off
J8 is a two-pin berg that is connected to the power supply two-pin cable that can turn off power to the
auxiliary power output. J8 can be used to switch off power to the monitor after the timeout specified in Power
Management Setup expires. J8 Pin 2 is GND. Pin 1 is the signal to switch off power.
J1 Fan Connector
J1 is a two-pin berg that can be attached to an additional CPU cooling fan. Pin 2 is the anode. Pin 1 is the
cathode.
Continued
Atlas PCI Pentium EISA Motherboard User's Guide
Step 8 Connect Onboard I/O
Onboard Serial Ports, Parallel Port, Floppy, and IDE
The Atlas PCI motherboard has two serial ports (P4 and P5), a parallel port (P9), two IDE connectors (P6 and
P7), and a floppy connector (P8) onboard. The serial and parallel port connectors are described below, the
IDE connector on page 47 and the floppy connector on page 45.
Checking for Conflicts
WinBIOS automatically checks the adapter cards installed in the expansion slots on the motherboard for a
hard disk or floppy controller and serial or parallel ports and minimizes conflicts between onboard and
offboard I/O.
If WinBIOS... then...
finds an IDE hard disk drive controller
on an adapter card in an expansion slot,
finds a floppy drive controller on an
adapter card in an expansion slot,
finds serial ports on an adapter card in
an expansion slot,
finds a parallel port on an adapter card
in an expansion slot,
the onboard IDE controller is
automatically disabled.
the onboard floppy controller is
automatically disabled.
the onboard serial ports are
automatically disabled.
the onboard parallel port uses
an alternative address
Chapter 4 Installation
Step 8 Connect Onboard I/O,
Continued
P4 Serial Port 1 (COM1)
P5 Serial Port 2 (COM2)
and
P4 and P5 are 10-pin dual-inline bergs that connect via 10-pin double-row ribbons to male 9-pin D-sub
connectors fastened to the chassis to provide an ISA serial port interface. The connector pinout is shown
below. Pin 1 on the bergs is labeled “1". The wire leading to pin 1 on the cable usually has a colored stripe.
Pin 10 of both P4 and P5 should be cut as shown on page 44.
Attaching the Serial Port Cables
Two serial port cables are supplied with the motherboard. Attach the cables to P4 and P5 and to the external
serial port connectors on the chassis as shown below. See the drawing on page 16 for the P4 and P5 location.
Pin Use Pin Use
1 Carrier Detect 6 Data Set Ready
2 Receive Data 7 Request to Send
3 Transmit Data 8 Clear to Send
4 Data Terminal
Ready
5 GND 10 Key (N/C)
9 Ring Indicator
Atlas PCI Pentium EISA Motherboard User's Guide
Step 8 Connect Onboard I/O,
Attaching the Parallel Port Cable
A parallel port cable is supplied with the motherboard to connect P9, the parallel port connector on the
motherboard, to the externally mounted parallel port, as shown below. See the motherboard graphic on page
16 for the P9 location.
P9 Parallel Port Connector
P9 is a 26-pin dual-inline berg. The parallel port is bidirectional. A 26-pin double-row ribbon cable connects
P9 and a female 25-pin D-sub connector on the chassis, shown above. The P9 pinout is:
Pin Use Pin Use
Continued
1 -STROBE 14 -AUTOFEED
2 PD0 15 -ERROR
3 PD1 16 -INIT
4 PD2 17 -SLCTIN
5PD3 18GND
6PD4 19GND
7PD5 20GND
8PD6 21GND
9PD7 22GND
10 -ACK 23 GND
11 BUSY 24 GND
12 PE 25 GND
13 SLCT 26 N/C
Chapter 4 Installation
Step 8 Connect Onboard I/O,
P21 Green PC Monitor Connector
Attach a 10-wire 10 to 26-pin flat cable to P21, the Green PC monitor connector. The 26-pin end must be
connected to the VGA adapter card feature connector. After the timeout specified in Power Management
Setup, the motherboard drives the SYNC ENABLE, HSYNC, and VSYNC signals Low through open
collector outputs. Monitors that support the display power management specification (DPMS) can switch the
power off after examining this condition, thereby saving power. The P21 pinout follows.
Pin Signal Description Pin Signal Description
1N/C 6N/C
2N/C 7N/C
3 TTL output for
4 N/C 9 Open Collector
5N/C 10GND
P21 Green PC Pin Arrangement
The P21 monitor connector pins are arranged as follows:
Continued
SYNC enable
8 Open Collector
output for HSYNC
control
output for VSYNC
control
6789
12345
Atlas PCI Pentium EISA Motherboard User's Guide
Step 8 Connect Onboard I/O,
P11 SCSI Connector
P11 is an optional part that may not be present on the motherboard.
P11 is a standard 50-pin internal SCSI connector. You can attach any standard SCSI device via a standard
SCSI cable to P21. Make sure that the SCSI bus is properly terminated.
Cutting Pins
Pins must be cut on the two serial port connectors and the parallel port connector, as shown below.
Continued
Chapter 4 Installation
Step 9 Install Floppy Drive
P8 Floppy Disk Drive Connector
P8 is a 34-pin dual-inline berg. Connect the cable from the floppy drive(s) to P8. The onboard floppy
controller cannot be used if an adapter card with floppy controller is installed.
P12 Floppy Disk Connect and Cable
The motherboard supports up to two 720 KB, 1.44 MB, 2.88 MB 3½" drives and/or 360 KB and 1.2 MB 5¼"
floppy drives. The 34-pin ribbon attaches to P8 and the drives. The cable has a small twist between the floppy
connectors. The end connector is connected to floppy drive A:.
Atlas PCI Pentium EISA Motherboard User's Guide
Step 9 Install Floppy Drive,
P8 Floppy Connector Pinout
Twist in Floppy Cable
Continued
Pin Use Pin Use
1GND2RPM/LC
3GND4 N/C
5GND6DRATE
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
Floppy B to A Floppy B to A Floppy B to A Floppy B to A
10 to 16 12 to 14 14 to 12 16 to 10
11 to 15 13 to 13 15 to 11
Chapter 4 Installation
Step 10 Install Hard Disk
Attach Primary IDE Cable to P7
The two IDE hard disk drive connectors are P6 (Secondary) and P7 (Primary). Both connectors are 40-pin
dual-inline bergs. Each IDE connector supports up to two IDE drives. Use the second IDE connector if more
than two IDE hard disk drives must be supported. Attach the 40-wire ribbon cable from the primary IDE
drive(s) to P7. Attach the secondary (third and fourth) IDE drives to P6.
The onboard IDE controller is on the PCI bus for higher performance. The P7 pinout is:
Pin Use Pin Use
1-RESET 2GND
3 DATA7 4 DATA8
5 DATA6 6 DATA9
7 DATA5 8 DATA10
9 DATA4 10 DATA11
11 DATA3 12 DATA12
13 DATA2 14 DATA13
15 DATA1 16 DATA14
17 DATA0 18 DATA15
19 GND 20 KEY (N/C)
21 N/C 22 GND
23 -IOW 24 GND
25 -IOR 26 GND
27 IOCHRDY 28 ALE
29 N/C 30 GND
31 -IDEINT 32 -IOCS16
33 HA1 34 N/C
35 HA0 36 HA2
37 -CS0 38 -CS1
39 -IDEACT 40 GND
Atlas PCI Pentium EISA Motherboard User's Guide
Step 10 Install Hard Disk,
P6 Secondary IDE Drive Connector
To use a third and fourth IDE hard disk drive, attach the 40-wire ribbon cable from the IDE drive to P6. The
P6 pinout is:
Continued
Pin Use Pin Use
1-RESET 2GND
3 DATA7 4 DATA8
5 DATA6 6 DATA9
7 DATA5 8 DATA10
9 DATA4 10 DATA11
11 DATA3 12 DATA12
13 DATA2 14 DATA13
15 DATA1 16 DATA14
17 DATA0 18 DATA15
19 GND 20 KEY (N/C)
21 N/C 22 GND
23 -IOW 24 GND
25 -IOR 26 GND
27 IOCHRDY 28 ALE
29 N/C 30 GND
31 -IDE2INT 32 -IOCS16
33 HA1 34 N/C
35 HA0 36 HA2
37 -CS2 38 -CS3
39 -IDEACT 40 GND
Step 11 Install Adapter Cards
The Atlas PCI Pentium motherboard provides full EISA bus mastering adapter card support and full
compatibility with all IBM XT and AT-compatible adapter cards via six EISA expansion slots. The Atlas PCI
Pentium motherboard also has three PCI Local Bus expansion slots, all capable of bus mastering.
Chapter 4 Installation
Step 11 Install Adapter Cards,
PCI Local Bus Expansion Slots
The PCI Local Bus expansion slot sockets are distinctly different than the standard ISA expansion slot
sockets. These slots obviously accept a different kind of adapter card than the standard ISA adapter cards.
The slots are much more compact and smaller. PCI Slots D, E, and F are all master slots.
EISA Adapter Cards
EISA adapter cards have different fingers on the edge connecters than ISA adapter cards. The EISA
expansion slots have two rows of contacts, one below the other. An ISA (AT-compatible) Adapter Card can
be inserted in the EISA connector only far enough to make contact with the upper row of contacts. The longer
fingers on EISA adapter cards allow contact with the second row of contacts:
When installing EISA adapter cards, make sure that they snap in twice and are fully seated in the EISA
expansion slot. If the card makes contact only with the upper row of contacts, it cannot function properly.
Continued
Atlas PCI Pentium EISA Motherboard User's Guide
Step 10 Install Adapter Cards,
8-Bit ISA Slot Pinout
Continued
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 SMEMWA12 SA19 B12 SMEMRA13 SA18 B13 IOWA14 SA17 B14 IORA15 SA16 B15 DACK3A16 SA15 B16 DREQ3
A17 SA14 B17 DACK1A18 SA13 B18 DREQ1
A19 SA12 B19 REFA20 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 DACK2A27 SA04 B27 T/C
A28 SA03 B28 BALE
A29 SA02 B29 +5
A30 SA01 B30 OSC
A31 SA00 B31 GND
Chapter 4 Installation
Step 10 Install Adapter Cards,
16-Bit ISA Extension Pinout
The following 16-bit pins are an extension of the 8-bit board layout and are used in conjunction with the 8-bit
board standard pins.
Pin Use Pin Use
C1 SBHE- D1 MEMCS16C2 LA23 D5 IOCS16C3 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 DACK5C11 SD08 D11 DREQ5
C12 SD09 D12 DACK6C13 SD10 D13 DREQ6
C14 SD11 D14 DACK7C15 SD12 D15 DREQ7
C16 SD13 D16 +5
C17 SD14 D17 MASTERC18 SD15 D18 GND
Continued
32-bit EISA Slot Pinout
The following table identifies the pin values for the pins on each of the eight rows of pins on an EISA adapter
card. 8- and 16-bit ISA signals are shown. Pins labeled xxxxxx are generally used to isolate signals on the bus
from adjacent power pins. Rows A, B, C, and D are upper (ISA) contacts. Rows E, F, G, and H are lower
(EISA) contacts. The following table lists the pinouts for Rows F, B, E, and A.
Atlas PCI Pentium EISA Motherboard User's Guide
Step 10 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 D5
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
Chapter 4 Installation
Step 10 Install Adapter Cards,
Continued
32-bit EISA Slot Pinout
, cont'd
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 D50 9 MRDC#
10 D51 10 DAK# 5 10 D52 10 MWTC#
11 D53 11 DRQ 5 11 GND 11 D8
12 D54 12 DAK# 6 12 D55 12 D9
13 GND 13 DRQ# 6 13 D56 13 D10
14 D57 14 DAK# 7 14 D58 14 D11
15 Access Key 15 DRQ# 7 15 Access Key 15 D12
16 D59 16 + 5 volts 16 GND 16 D13
17 + 5 volts 17
MASTER16#
18 + 5 volts 18 GND 18 D31 18 D15
19 MAXx# 19 MREQx#
17 D30 17 D14
PCI Local Bus Pinout
The first three expansion slots in the Atlas PCI Pentium motherboard are for PCI Local Bus adapter cards, as
shown on the graphic on page 16. The PCI bus master slots are P16 (Slot E), P17 (Slot F), and P18 (Slot D).
Atlas PCI Pentium EISA Motherboard User's Guide
Step 11 Install Adapter Cards,
Continued
PCI Local Bus Pinout,
The 32-bit connector is from Pin 1 through Pin 62.
cont'd
Pin 5V System Environment
Side B Side A
1 -12V TRST#
2 TCK +12V
3 Ground TMS
4TDO TDI
5+5V +5V
6+5V INTA#
7INTB# INTC#
8 INTD# +5V
9 PRSNT1# Reserved
10 Reserved +5V(I/O)
11 PRSNT2# Reserved
12 Ground Ground
13 Ground Ground
14 Reserved Reserved
15 Ground RST#
16 CLK +5V (I/O)
17 Ground GNT#
18 REQ# Ground
19 +5V (I/O) Reserved
20 AD[31] AD[30]
21 AD[29] +3.3V
22 Ground AD[28]
23 AD[27] AD[26]
24 AD[25] Ground
25 +3.3V AD[24]
26 C/BE[3]# IDSEL
27 AD[23] +3.3V
28 Ground AD[22]
29 AD[21] AD[20]
30 AD[19] Ground
31 +3.3V AD[18]
32 AD[17] AD[16]
33 C/BE[2]# +3.3V
34 Ground FRAME#
35 IRDY# Ground
36 +3.3V TRDY#
37 DEVSEL# Ground
38 Ground STOP#
39 LOCK# +3.3V
40 PERR# SDONE
Chapter 4 Installation
Step 11 Install Adapter Cards,
Continued
PCI Local Bus Pinout,
cont'd
Pin 5V System Environment
Side B Side A
41 +3.3V SBO#
42 SERR# Ground
43 +3.3V PAR
44 C/BE[1]# AD[15]
45 AD[14] +3.3V
46 Ground AD[13]
47 AD[12] AD[11]
48 AD[10] Ground
49 Ground AD[09]
50 5V Connector Key
51 5V Connector Key
52 AD[08] C/BE[0]#
53 AD[07] +3.3V
54 +3.3V AD[06]
55 AD[05] AD[04]
56 AD[03] Ground
57 Ground AD[02]
58 AD[01] AD[00]
59 +5V (I/O) +5V (I/O)
60 ACK64# REQ64#
61 +5V +5V
62 +5V +5V
Step 12 Test and Configure
Review the following points before powering up:
make sure all adapter cards are seated properly,
•
make sure all connectors are properly installed,
•
if an upgrade processor is used, make sure it is seated properly,
•
make sure no screws or other foreign material are on the motherboard,
•
plug the system into a surge-protected power strip, and
•
make sure blank back panels are installed on the back of the chassis to minimize RF emissions.
•
Atlas PCI Pentium EISA Motherboard User's Guide
Step 12 Test and Configure,
Start the Test
Plug everything in and turn on the switch. If there are any signs of a problem, turn off the unit immediately.
Reinstall the connectors. Call American Megatrends Technical Support at 404-246-8600 if there are
problems.
WinBIOS Errors
If the system operates normally, a display should appear on the monitor. WinBIOS Power On Self Test
(POST) should execute. If POST does not run successfully, it will beep or display error messages.
Beeps indicate a serious problem with the system configuration or hardware. The Beep Code (see page 2)
indicates the problem. Make sure the affected part is properly seated and connected. An error message is
displayed if the error is less serious. Recheck the system configuration or the connections.
Configure the System
Run WinBIOS Setup. You must enter the requested information and save the configuration data in CMOS
RAM. The system will then reset, run POST, and boot the operating system. See page 13 for information on
configuring the system via Standard Setup.
Continued
Run the ECU
Run the American Megatrends EISA Configuration Utility (ECU) to properly configure the system. The ECU
and the !AMI7171.CFG and AMI7171.OVL. files are shipped on a floppy disk with all Atlas PCI EISA
motherboards. The American Megatrends EISA Configuration Utility User's Guide provides complete details
about running the ECU.
Chapter 4 Installation
5 WinBIOS Power-On Self Test
WinBIOS provides all IBM-standard POST routines as well as enhanced WinBIOS POST routines and CPU
internal diagnostics. WinBIOS POST codes can be accessed via the Manufacturing Test Port (I/O Port 80h).
WinBIOS POST checkpoint codes are described in the ISA and EISA Hi-Flex AMIBIOS Technical
Reference.
POST Phases
When the system is powered on, the WinBIOS executes POST, which has two phases:
System Test and Initialization (test and initialize motherboards for normal operations), and
•
System Configuration Verification (compare defined configuration with there hardware actually
•
installed).
WinBIOS Error Reporting
The WinBIOS performs diagnostic when the system is powered up. Error s are reported in one of two ways:
If... Then...
the error occurs before the
display device is
initialized,
the error occurs after the
display device is
initialized,
a series of beeps sound. Beep codes indicate
that a fatal error has occurred. The WinBIOS
Beep Codes are described on the next page.
the error message is displayed. Displayed
error messages are explained below. A prompt
to press <F1> can also appear.
Atlas PCI Pentium EISA Motherboard User's Guide
Beep Codes
Errors may occur during WinBIOS POST (Power On Self Test). Fatal errors are communicated through a
series of audible beeps. All errors except Beep Code 8 are fatal.
Beeps Error message Description
1 Refresh Failure The memory refresh circuitry on the
motherboard is faulty.
2 Parity Error Parity error in the first 64 KB of
memory.
3 Base 64 KB Memory
Failure
4Timer Not
Operational
5 Processor error The CPU (Central Processing Unit) on
6 8042 - Gate A20
Failure
7 Processor Exception
Interrupt Error
8Display Memory
Read/Write Error
9 ROM Checksum
Error
10 CMOS Shutdown
Register Read/Write
Error
Memory failure in first 64 KB.
Memory failure in the first 64 KB or
Timer 1 on the motherboard is not
functioning.
the motherboard has generated an error.
WinBIOS cannot switch to protected
mode.
The CPU on the motherboard generated
an exception interrupt.
The system video adapter is either
missing or its memory is faulty.
The ROM checksum value does not
match the value encoded in WinBIOS.
The shutdown register for CMOS RAM
failed.
What to Do If the Computer Beeps
If the system beeps... then...
1, 2, or 3 times... reseat the memory SIMMs or DIPs. If the
4, 5, 7, or 10 times... the motherboard must be replaced.
system still beeps, replace the memory.
6 times... reseat the keyboard controller chip. If it still
beeps, replace the keyboard controller. If it
still beeps, try a different keyboard, or replace
the keyboard fuse, if the keyboard has one.
8 times... memory error on the video adapter. Replace
the video adapter, or the RAM on the video
adapter.
9 times... the BIOS ROM chip is bad. The system
probably needs a new BIOS ROM chip.
11 times... reseat the cache memory on the motherboard.
If it still beeps, replace the cache memory.
Chapter 5 AMIBIOS POST
WinBIOS Displayed Error Messages
If POST initializes the system video monitor, errors can be displayed on the screen. These errors usually
allow the system to continue. They are listed on Page 3. Error message are displayed as follows:
ERROR Message Line 1
ERROR Message Line 2
Press <F1> to RESUME
Press <F1> to continue the boot process. The system does not halt if Wait for <F1> If Any Error in
Advanced Setup is Disabled.
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. Check the C: hard
disk type in STANDARD CMOS SETUP.
C: Drive Failure No response from drive C:. It may be necessary to replace the hard disk.
Cache Memory Bad, Do Not
Enable Cache!
CH-2 Timer Error Most AT motherboards include two timers. An error occurred with timer #2.
CMOS Battery State Low CMOS RAM is powered by a battery. The battery power is low. Replace the
CMOS Checksum Failure After CMOS RAM values are saved, a checksum value is generated for error
CMOS System Options Not Set The values stored in CMOS RAM are either corrupt or nonexistent. Run
CMOS Display Type Mismatch The video type in CMOS RAM does not match the type detected by
CMOS Memory Size Mismatch
CMOS Time & Date Not Set Run the STANDARD CMOS SETUP to set the date and time in CMOS
D: Drive Error No response from drive D:. Run the Hard Disk Utility. Check the D: hard
D: drive failure No response from drive D:. It may be necessary to replace the hard disk.
Diskette Boot Failure The boot diskette in floppy drive A: cannot be used to boot the system. Use
Display Switch Not Proper Some systems require video switch on the motherboard be set to either color
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 WinBIOS cannot communicate with the floppy disk drive controller. Check
HDD Controller Failure WinBIOS cannot communicate with the hard disk drive controller. Check all
Cache memory on the motherboard is defective. Consult the cache memory
manufacturer.
battery.
checking. This message appears if the previous value is different from the
current value. Run WinBIOS Setup.
WinBIOS Setup.
WinBIOS. Run WinBIOS Setup.
The amount of memory on the motherboard is different than the amount in
CMOS RAM. Run WinBIOS Setup.
RAM.
disk type in STANDARD CMOS SETUP.
another boot diskette and follow the screen instructions.
or monochrome. Turn the system off, set the switch properly, then power on.
all appropriate connections after the system is powered down.
appropriate connections after the system is powered down.
Atlas PCI Pentium EISA Motherboard User's Guide
WinBIOS Displayed Error Messages
Error Message Explanation
INTR #1 Error Interrupt channel #1 has failed POST.
INTR #2 Error Interrupt channel #2 has failed POST.
Invalid Boot Diskette WinBIOS can read the diskette in floppy drive A:, but it cannot boot the
Keyboard Is Locked...Unlock It The keyboard lock on the system is engaged. The system must be
Keyboard Error Timing problem with the keyboard. Make sure a keyboard controller
KB/Interface Error Error in the keyboard connector on the motherboard.
No ROM BASIC Cannot find a proper bootable sector on either diskette drive A: or hard
Off Board Parity Error Parity error in offboard memory. The format is:
Onboard Parity Error Parity error in motherboard memory. The format is:
Parity Error ???? Parity error in system memory at an unknown address. Run AMIDiag to
system with it. Use another boot diskette and follow the screen
instructions.
unlocked to continue the boot process.
WinBIOS is installed. Set the Keyboard option in STANDARD CMOS
SETUP to Not Installed to skip the keyboard POST routines.
disk drive C:. Use a bootable disk.
OFF BOARD PARITY ERROR ADDR (HEX) = (XXXX)
XXXX is the hex address where the error occurred. Run AMIDiag to find
and correct memory problems.
Onboard PARITY ERROR ADDR (HEX) = (XXXX)
XXXX is the hex address where the error occurred. Run AMIDiag to find
and correct memory problems.
find and correct memory problems.
Chapter 5 AMIBIOS POST
Other Messages
ISA NMI Messages
ISA NMI
Message
Memory Parity
Error at xxxxx
I/O Card Parity
Error at xxxxx
DMA Bus
Time-out
EISA WinBIOS Error Messages
Error Message Explanation
EISA CMOS Checksum
Failure
EISA CMOS inoperational Read/Write error in extended CMOS RAM. The
Expansion Board not ready at
Slot X, Y, Z
Fail-Safe Timer NMI
Inoperational
ID information mismatch for
Slot X, Y, Z.
Invalid Configuration
Information for Slot X, Y, Z.
Software Port NMI
Inoperational
Explanation
Memory failed. If the memory location can be determined, it is
displayed as xxxxx. If not, the message is Memory Parity Error
????.
An adapter card failed. If the address can be determined, it is
displayed as xxxxx. If not, the message is I/O Card Parity Error
????.
A device other than the CPU has driven the bus signal for more
than 7.8 microseconds.
The Checksum for EISA CMOS is incorrect.
Replace the EISA Extended CMOS RAM battery.
battery may need to be replaced.
Cannot find the adapter card in Slot X, Y, or Z.
Make sure the adapter card is in the correct slot and
is seated correctly.
Devices that depend on the fail-safe NMI timer will
not operate correctly.
The ID of the EISA Adapter Card in Slot X, Y, or Z
does not match the ID in EISA CMOS RAM.
The configuration information for EISA Adapter
Cards X, Y, or Z is not correct. The adapter card in
this slot cannot be configured. Run the ECU.
The software port NMI is not working.
EISA NMI Messages
BUS Timeout NMI at Slot n Bus Timeout NMI at Slot n.
(E)nable (D)isable Expansion
Board?
Expansion Board Disabled at Slot n The adapter card in Slot n is disabled.
Expansion Board NMI at Slot n An expansion board NMI occurred in Slot n.
Fail-Safe Timer NMI Fail-safe timer NMI generated.
Software Port NMI Software port NMI generated.
Atlas PCI Pentium EISA Motherboard User's Guide
EISA NMI Message Explanation
Type E to enable the adapter card that had an
NMI or D to disable it.
WinBIOS Configuration Summary Screen
WinBIOS displays the following screen when the POST routines are successfully completed.
╔══════════════════════════════════════════════════════════════════════════════╗
║ WinBIOS System Configuration (C) Copyright 1985-1993 American Megatrends Inc.║
╠══════════════════════════════════════╤═══════════════════════════════════════╣
║ Main Processor : P54C │ Base Memory Size : 640 KB ║
║ Numeric Coprocessor : Present │ Ext. Memory Size : 7808 KB ║
║ Floppy Drive A: : 1.2 MB ½ │ Hard Disk C: Type : Type 47 ║
║ Floppy Drive B: : 1.44 MB ¼ │ Hard Disk D: Type : Type 47 ║
║ Display Type : VGA/PGA/EGA │ Serial Port(s) : 3F8, 3E8 ║
║ WinBIOS Date : 08/08/93 │ Parallel Port(s) : 378 ║
║ │ ║
╚══════════════════════════════════════╧═══════════════════════════════════════╝
256 KB Cache Memory
90 MHz CPU Clock
POST Memory Test
Normally, the only visible POST routine is the memory test. shown below.
WinBIOS (C) 1993 American Megatrends Inc.
XXXXX KB OK
BIOS Release 717070894
Press <DEL> if you want to run SETUP
40-0100-0046717-00111111-121593-AMIS717-H
The WinBIOS Identification string appears in the left bottom corner of the screen. Press <Ins> during system
boot to display two additional BIOS Identification strings. These strings contain system information and are
described in the AMIBIOS Technical Reference.
When a problem occurs, freeze the screen by powering on the system and holding a key down, which causes a
Keyboard Error message. Copy the BIOS Identification Strings and report this information to American
Megatrends Technical Support. Press <F1> to continue. Enable the Wait for <F1> If any Error option in
Advanced Setup before using this method to freeze the screen. The following message is displayed after
POST completes:
Hit <DEL> if you want to run SETUP
Press <Del> to access WinBIOS Setup.
Chapter 5 AMIBIOS POST
WinBIOS Features
The WinBIOS for the American Megatrends Atlas PCI Pentium EISA motherboard has several features that
can be accessed from the keyboard at any time.
Keyboard Speed Switching
You can increase the processor speed at any time by pressing <Ctrl><Alt><+>. Processor speed can be
decreased by pressing <Ctrl><Alt><->. The above values are the default settings.
Enable Cache Memory
Secondary (external) cache memory can be enabled by pressing <Ctrl><Alt><Shift><+> or disabled by
pressing <Ctrl><Alt><Shift><->. The above values are the default settings.
Atlas PCI Pentium EISA Motherboard User's Guide
Chapter 5 AMIBIOS POST
6 WinBIOS Setup
In ISA and EISA computers, the system parameters (such as amount of memory, type of disk drives and
video displays, and many other elements) are stored in CMOS RAM. Unlike the DRAM (dynamic random
access memory) that is used for standard system memory, CMOS RAM requires very little power. When the
computer is turned off, a back-up battery provides power to CMOS RAM, which retains the system
parameters. Every time the computer is powered-on, the computer is configured with the values stored in
CMOS RAM by the system BIOS, which gains control when the computer is powered on.
The system parameters are configured by a system BIOS Setup utility. Historically, BIOS Setup utilities
have been character-based, required keyboard input, and has user interfaces that were not very intuitive.
A New Type of System BIOS Setup Utility
American Megatrends has now made available a new type of system BIOS Setup utility. WinBIOS Setup
has a graphical user interface that permits mouse access, and is so compact that it can reside on the same
ROM as the system BIOS. The system configuration parameters are set via WinBIOS Setup. Since
WinBIOS Setup resides in the ROM BIOS, it is available each time the computer is turned on.
Starting WinBIOS Setup
As POST executes, the following appears:
Hit <DEL> if you want to run SETUP
Press <Del> to run WinBIOS Setup.
Atlas PCI Pentium EISA Motherboard User's Guide
Using a Mouse with WinBIOS Setup
WinBIOS Setup has a built-in mouse driver and can be accessed by either a serial mouse or PS/2-style
mouses. WinBIOS Setup supports Microsoft-Compatible serial mouses and all PS/2-type mouses.
The mouse click functions are: single click to change or select both global and current fields and double
clock to perform an operation in the selected field.
Using the Keyboard with WinBIOS Setup
WinBIOS has a built-in keyboard driver that uses simple keystroke combinations:
<Tab> Change or select a global field.
→, ←, ↑, ↓
<Enter> Performs an operation in the current field.
+ Increments a value.
- Decrements a value.
<Esc> Aborts any window function.
<PgUp> Returns to the previous page.
<PgDn> Advances to the next page.
<Home>Returns to the beginning of the text.
<End> Advances to the end of the text.
<Alt> Used with certain key function, as in <Alt> <key>.
Alphabetic keys A to Z are used in the Virtual Keyboard, and are not case-sensitive.
Numeric keys 0 to 9 are used in the Virtual Keyboard and Numeric Keypad.
Change or select the current field.
Chapter 6 WinBIOS Setup
WinBIOS Setup
The WinBIOS Setup main menu, shown below, is organized into four sections. Each of these sections
corresponds to a section in this chapter.
Each section contains several icons. Clicking on each icon activates a specific WinBIOS function. The
WinBIOS Setup icons and related functions are described in this chapter. The screen sections are:
Setup
described in Section 1 on page 13, this section has five icons that permit you to set system
configuration options such as date, time, hard disk type, floppy type, and many others,
Utilities
Security
described in Section 2 beginning on page 31, has four icons that perform system functions,
described in Section 3 beginning on page 33, has two icons that control WinBIOS security
features, and
Default
described in Section4 beginning on page 35, this section has three icons that permit you to select a
group of settings for all WinBIOS Setup options.
Atlas PCI Pentium EISA Motherboard User's Guide
Chapter 6 WinBIOS Setup
Section 1
WinBIOS Setup Screens
Standard Setup
The WinBIOS Setup options described in this section are selected by choosing the appropriate high-level
icon from the Standard Setup screen. Standard Setup is selected from the Setup section on the WinBIOS
Setup main menu (see the previous page). All displayed icons are described in this section, although the
screen display is often all you need to understand how to set the option. The Standard Setup screen follows.
Date, Day and Time Configuration
Select the Standard option. Select the Date and Time icon. The current values for each category are
displayed. Enter new values through the keyboard.
Atlas PCI Pentium EISA Motherboard User's Guide
Standard Setup,
Continued
Hard Disk C: Type
Hard Disk D: Type
Select one of these hard disk drive icons to configure the drive named in the option. A scrollable screen that
lists all valid disk drive types is displayed. Select the correct type and press <Enter>. If the hard disk drive
is an IDE drive, select Detect C: or Detect D: from the Utility section of the WinBIOS Setup main menu to
have WinBIOS automatically detect the IDE drive parameters and report them to this screen.
Entering Drive Parameters
You can also enter the hard disk drive parameters. The drive parameters are:
Parameter Description
Type The number for a drive with certain identification
parameters.
Cylinders The number of cylinders in the disk drive.
Heads The number of heads.
Write
Precompensation
Landing Zone This number is the cylinder location where the heads
Sectors The number of sectors per track. MFM drives have 17
Capacity The formatted capacity of the drive is (Number of
The size of a sector gets progressively smaller as the
track diameter diminishes. Yet each sector must still
hold 512 bytes. Write precompensation circuitry on the
hard disk compensates for the physical difference in
sector size by boosting the write current for sectors on
inner tracks. This parameter is the track number where
write precompensation begins.
will normally park when the system is shut down.
sectors per track. RLL drives have 26 sectors per track.
ESDI drives have 34 sectors per track. SCSI and IDE
drive may have even more sectors per track.
heads) x (Number of cylinders) x (Number of sectors
per track) x (512 bytes per sector)
Chapter 6 WinBIOS Setup
Standard Setup,
Hard Disk Drive Types
Continued
Type Cylinders Heads Write
Precompensa
tion
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
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 USER-DEFINED HARD DRIVE - Enter user-supplied parameters.
Landing
Zone
Sectors Capacity
Atlas PCI Pentium EISA Motherboard User's Guide
Standard Setup,
Continued
Using Auto Detect Hard Disk (Only for IDE Drives)
If you select Detect C: or Detect D: from the Utility section of the WinBIOS Setup main menu, WinBIOS
automatically finds all IDE hard disk drive parameters. WinBIOS places the hard disk drive parameters that
it finds in the Drive C: Type or Drive D: Type fields in Standard Setup.
Floppy Drive A:
Floppy Drive B:
Move the cursor to these fields via ↑ and ↓ and select the floppy type. The settings are 360 KB 5¼ inch, 1.2
MB 5¼ inch, 720 KB 3½ inch, 1.44 MB 3½ inch, or 2.88 MB 3½ inch.
Chapter 6 WinBIOS Setup
Advanced Setup
The WinBIOS Setup options described in this section are selected by choosing the appropriate high-level
icon from the Advanced Setup screen. Advanced Setup is selected from the Setup section on the WinBIOS
Setup main menu (see page 11). All displayed icons are described in this section, although the screen
display is often all you need to understand how to set the option.
Typematic Rate (Chars/Sec)
Typematic Rate sets the rate at which characters on the screen repeat when a key is pressed and held down.
The settings are 15, 20, 24, or 30 characters per second.
System Keyboard
This option does not specify if a keyboard is attached to the computer. Rather, it specifies if error messages
are displayed if a keyboard is not attached. This option permits you to configure workstations with no
keyboards. The settings are Absent or Present. The Optimal and Fail-Safe default settings are Present.
Primary Display
Select this icon to configure the type of monitor attached to the computer. The settings are Mono,
CGA40x25, CGA80x25, VGA/EGA, or Absent. The Optimal and Fail-Safe default settings are VGA/EGA.
Mouse Support
When this option is enabled, WinBIOS supports a PS/2-type mouse. The settings are Enabled or Disabled.
Atlas PCI Pentium EISA Motherboard User's Guide
Advanced Setup,
Continued
Above 1 MB Memory Test
When this option is enabled, the BIOS memory test is performed on all system memory. When this option is
disabled, the memory test is done only on the first 1 MB of system memory. The settings are Enabled or
Disabled.
Memory Test Tick Sound
This option enables (turns on) or disables (turns off) the ticking sound during the memory test. The settings
are Enabled or Disabled.
Memory Parity Error Checking
This option enables or disables parity error checking for system RAM. The settings are Enabled (all system
RAM parity is checked) or Disabled (parity is checked only on the first 1 MB of system RAM).
Hit <DEL> Message Display
Disabling this option prevents
Hit <DEL> if you want to run Setup
from appearing when the system boots. The settings are Enabled or Disabled.
Extended BIOS RAM Area
Specify in this option if the top 1 KB of the system programming area beginning at 639K or 0:300 in the
BIOS area in low memory will be used to store hard disk information. The settings are Top 1K or 0:300.
Chapter 6 WinBIOS Setup
Advanced Setup,
Continued
Wait for <F1> If Any Error
WinBIOS POST runs system diagnostic tests that can generate a message followed by:
Press <F1> to continue
If this option is enabled, WinBIOS waits for the end user to press <F1> before continuing. If this option is
disabled, WinBIOS continues the boot process without waiting for <F1> to be pressed. The settings are
Enabled or Disabled.
System Boot Up Num Lock
When On, this option turns off Num Lock when the system is powered on so the end user can use the arrow
keys on both the numeric keypad and the keyboard. The settings are On or Off.
Floppy Drive Seek At Boot
When this option is enabled, WinBIOS performs a Seek command on floppy drive A: before booting the
system. The settings are Enabled or Disabled.
System Boot Up Sequence
This option sets the sequence of boot drives (either floppy drive A: or hard disk drive C:) that the WinBIOS
attempts to boot from after WinBIOS POST completes. The settings are C:,A: or A:,C:.
System Boot Up CPU Speed
This option sets the speed of the CPU at system boot time. The settings are High or Low.
Atlas PCI Pentium EISA Motherboard User's Guide
Advanced Setup,
Continued
Internal/External Cache Memory
This option enables internal (L1) and secondary (L2) cache memory. The settings are:
External Cache Mode
This option selects the type of caching algorithm used by WinBIOS and the computer for L2 (external)
secondary cache memory. The settings are Wr-Thru or Wr-Back.
Internal Cache Mode
This option selects the type of caching algorithm used by WinBIOS and the computer for L1 internal cache
memory. The settings are Wr-Thru or Wr-Back.
Setting Optimal
default
setting
Both _ Enable both internal L1 cache
Internal Enable only internal L1 cache
Disabled _ Disable both internal L1 cache
Fail-Safe
defaul
setting
memory on the CPU and
secondary (external) L2 cache
memory.
memory on the CPU.
memory on the CPU and
secondary (external) L2 cache
memory.
Description
Adaptor Shadow Cacheable
When this option is set to Enabled, the contents in system DRAM memory of any ISA adaptor ROM that
has been shadowed to RAM will also be copied to cache memory. The setting are Enabled or Disabled.
Chapter 6 WinBIOS Setup
Advanced Setup,
Continued
System BIOS Cacheable
When this option is set to Enabled, the contents in system DRAM memory of the system BIOS ROM that
has been shadowed to RAM will also be copied to cache memory. The setting are Enabled or Disabled.
Password Checking
This option enables the password check option every time the system boots or the end user runs Setup. If
Always is chosen, a user password prompt appears every time the computer is turned on. If Setup is chosen,
the password prompt appears if WinBIOS is executed. See page 33 for instructions on changing a password.
The Optimal and Power-On defaults are Setup.
Video ROM Shadow C000,32K
When this option is set to Enabled, the video ROM area from C0000h - C7FFFh is copied (shadowed) to
RAM for faster execution. The settings are Absent, Present, or Shadow.
ISA Adaptor ROM at C800,16K
ISA Adaptor ROM at CC00,16K
ISA Adaptor ROM at D000,16K
ISA Adaptor ROM at D400,16K
ISA Adaptor ROM at D800,16K
ISA Adaptor ROM at DC00,16K
These options enable shadowing of the contents of the ISA Adaptor ROM area named in the option title.
The settings are Absent, Present, or Shadow. The ROM area that is set to Absent will be allocated to PCI
adapter cards.
Atlas PCI Pentium EISA Motherboard User's Guide
Chipset Setup
The WinBIOS Setup options described in this section are selected by choosing the appropriate high-level
icon from the Chipset Setup screen. Chipset Setup is selected from the Setup section on the WinBIOS Setup
main menu (see page 11). All displayed icons are described in this section, although the screen display is
often all you need to understand how to set the option.
Base Memory Size
This option sets the size of the base system memory. The settings are 512 KB or 640 KB.
ISA VGA Frame Buffer Size
This option must be set to Enabled if the VGA card installed in the system requires a frame buffer. This
option sets the size of the VGA frame buffer. The settings are Disabled, 1 MB, 2 MB, or 4 MB.
ISA VGA Frame Buf. Base Addr
This option automatically sets the base address (or starting point) of the ISA VGA frame buffer according
to the size of the VGA frame buffer.
Chapter 6 WinBIOS Setup
Chipset Setup,
ISA IRQ 9
At least one IRQ must be free for each PCI Card in the system. If the PCI Card includes a multifunction
device, at least two or more IRQs must be free. This option specifies if IRQ 9 is used on the ISA bus. If not
used, it may be allocated to the PCI bus. The settings are ISA or PCI.
ISA IRQ 10
At least one IRQ must be free for each PCI Card in the system. If the PCI Card includes a multifunction
device, at least two or more IRQs must be free. This option specifies if IRQ 10 is used on the ISA bus. If
not used, it may be allocated to the PCI bus. The settings are ISA or PCI.
ISA IRQ 11
At least one IRQ must be free for each PCI Card in the system. If the PCI Card includes a multifunction
device, at least two or more IRQs must be free. This option specifies if IRQ 11 is used on the ISA bus. If
not used, it may be allocated to the PCI bus. The settings are ISA or PCI.
ISA IRQ 15
Continued
PCI IRQ
At least one IRQ must be free for each PCI Card in the system. If the PCI Card includes a multifunction
device, at least two or more IRQs must be free. This option specifies if IRQ 15 is used on the ISA bus. If
not used, it may be allocated to the PCI bus. The settings are ISA or PCI. The Optimal and Power-On
defaults are PCI.
This option specifies if ISA IRQs 9, 10, 11, and 15 assigned to PCI are edge-triggered or level-triggered.
The settings are Level or Edge.
Atlas PCI Pentium EISA Motherboard User's Guide
Chipset Setup,
Continued
Offboard NCR 53C810 SCSI BIOS
Set this option to Enabled when a PCI adapter card with an NCR 53C810 SCSI controller is installed in any
PCI expansion slot on the motherboard. These adapter cards do not have an onboard PCI SCSI BIOS and
must use the PCI SCSI BIOS on the Atlas PCI EISA motherboard. The settings are Enabled or Disabled.
PCI VGA Palette Snooping
This option must be set to Enabled if any EISA or ISA adapter card installed in the system requires VGA
palette snooping. The settings are Enabled or Disabled.
Chapter 6 WinBIOS Setup
Power Management Setup
The WinBIOS Setup options described in this section are selected by choosing the appropriate high-level
icon from the Power Mgmt Setup screen. Power Mgmt Setup is selected from the Setup section on the
WinBIOS Setup main menu (see page 11). All displayed icons are described in this section, although the
screen display is often all you need to understand how to set the option.
Aux Power Off Timeout
This option specifies the length of time of keyboard, mouse, COM1, and COM2 inactivity that must expire
before the auxiliary power is shut off. Power supplies that support this feature can attach its two-wire cable
to J8 and shut off auxiliary power. The settings are Disabled and 1 Min through 255 Min in one minute
intervals. The Optimal and Fail-Safe settings are Disabled.
Monitor Low Power Mode
This option specifies the length of time of keyboard, mouse, COM1, and COM2 inactivity that must expire
before the motherboard drives the SYNC ENABLE, HSYNC, and VSYNC signals Low through open
collector outputs. The 10 to 26-wire cable must be connected between P19 and the VGA adapter card
feature connector. The signals on the feature connector must not be output only.
Monitors that support the display power management specification (DPMS) will switch the power off
looking at this condition, thereby saving power. The settings are Disabled or 1 Min through 255 Min in one
minute intervals. The Optimal and Fail-Safe settings are Disabled.
Atlas PCI Pentium EISA Motherboard User's Guide
Peripheral Setup
The WinBIOS Setup options described in this section are selected by choosing the appropriate high-level
icon from the Peripheral Setup screen. Peripheral Setup is selected from the Setup section on the WinBIOS
Setup main menu (see page 11). All displayed icons are described in this section, although the screen
display is often all you need to understand how to set the option.
Programming Mode
The settings are Auto or Manual. When set to Auto, the BIOS automatically detects all adapter cards
installed in the system and configures the onboard I/O (serial ports, parallel ports, floppy controllers, and
IDE controller) automatically. All other Peripheral Setup option settings are ignored. Any serial port,
parallel port, floppy controller, or IDE (Integrated Drive Electronics) controller on an adapter card in an
expansion slot is configured before onboard I/O. If Auto is selected, the BIOS also attempts to avoid IRQ
conflicts.
If the offboard serial ports are configured to specific starting I/O ports via jumper settings, the BIOS will
configure the onboard serial ports to avoid conflicts. For example, if the default serial port starting I/O ports
(serial port1 - 3F8h, serial port2 - 2F8h, serial port3 - 3E8h, serial port4 - 2E8h) are used, the following
configurations are possible:
If there are... the ports are configured
as...
two offboard serial ports 3E8h and 2F8h 3E8h and 2E8h
two offboard serial ports 3F8h and 3E8h 3F8h and Disabled
one offboard serial port 2F8h 3F8h and Disabled
one offboard serial port 3F8h 2F8h and Disabled
and the two onboard serial ports
are configured as...
If Manual is selected, the settings chosen by the end user in Peripheral Setup apply. WinBIOS reports any
I/O conflicts after displaying the BIOS Configuration Summary Screen, but only if Manual is chosen.
Chapter 6 WinBIOS Setup
Peripheral Setup,
Continued
On-Board Floppy Drive
This option enables the use of the floppy drive controller on the motherboard (if installed). The settings are
Enabled or Disabled.
On-Board IDE Drive
This option enables the use of the IDE controller on the motherboard (if installed). The settings are Enabled
or Disabled.
First Serial Port Address
IRQ4 is used for the first serial port (COM1). This option enables serial port 1 on the motherboard (if
installed). The settings are 2E8h.
Second Serial Port Address
IRQ3 is used for the second serial port (COM2). This option enables serial port 2 on the motherboard, if
installed. The settings are 2E8h.
Parallel Port Address
IRQ7 is used for the parallel port (LPT1). The IRQ can be changed to IRQ5. This option enables the
parallel port on the motherboard, if installed. The settings are 278h.
IRQ Active State
This option specifies if the parallel and serial port IRQs are active high or active low. The settings are Low
or High.
Parallel Port Mode
This option specifies the parallel port Mode. The settings are Normal or Extended.
Atlas PCI Pentium EISA Motherboard User's Guide
Peripheral Setup,
Continued
PCI IDE Card Present In
Set this option when installing a PCI IDE adapter card. This option specifies the PCI slot occupied by a PCI
IDE adapter card. The settings are Absent, Slot D, Slot E, or Slot F.
PCI IDE IRQ Connected to
This option specifies the way in which the PCI IDE IRQ in any of the PCI slots is connected. The settings
are INTA, INTB, INTC, or INTD.
IDE 32 Bit Transfer
This option enables 32-bit data transfers on the IDE data port. If disabled, 16-bit data transfer is used by the
BIOS. 32-bit data transfers can only be enabled if IDE prefetch mode is also enabled. The settings are
Enabled or Disabled. The Optimal and Fail-Safe default settings are Disabled.
IDE LBA Mode
Set this option to Enabled if using an IDE drive that supports LBA (Logical Block Address) mode. IDE
drives with a capacity greater than 500 MB support LBA mode. The settings are Enabled or Disabled. The
Optimal and Fail-Safe default settings are Disabled.
IDE Block Mode
This option enables multiple sector reads and writes for IDE drives. The settings are Enabled or Disabled.
The Optimal and Power-On defaults are Disabled.
PCI IDE Host Timing
The settings are Slow or Fast. The Fast setting saves one clock on the lead-off cycle of the onboard PCI
IDE. The Optimal and Fail-Safe default settings are Slow.
Chapter 6 WinBIOS Setup
Peripheral Setup,
Continued
PCI IDE Prefetch Mode
Enabling this option enables this performance enhancement feature on the onboard PCI IDE. IDE data
prefetch, when enabled, saves valuable CPU time by taking the data from the IDE drive ahead of the CPU
request. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled.
PCI IDE 0 Transfer Mode
This option sets the data transfer mode for the PCI IDE circuitry on hard disk drive C: (disk 0). The settings
are Auto, Mode 0, Mode 1, or Mode 2. If Auto is selected, WinBIOS automatically determines the optimal
mode. The WinBIOS Auto Detect Hard Disk feature can detect and report all IDE drive parameters. The
Optimal and Fail-Safe default settings are Mode 0.
PCI IDE 1 Transfer Mode
This option sets the data transfer mode for the PCI IDE circuitry on hard disk drive D: (disk 1). The settings
are Auto, Mode 0, Mode 1, or Mode 2. If Auto is selected, WinBIOS automatically determines the optimal
mode. The WinBIOS Auto Detect Hard Disk feature can detect and report all IDE drive parameters. The
Optimal and Fail-Safe default settings are Mode 0.
Secondary IDE Drive
Set this option to Enabled when using the secondary IDE controller to control the third and fourth IDE
drives installed in the computer. The settings are Enabled or Disabled.
Atlas PCI Pentium EISA Motherboard User's Guide
Chapter 6 WinBIOS Setup
Section 2
Utility
The following icons appear in this section:
Detect C: if drive C: is an IDE drive, the hard disk drive parameters for drive C: are automatically
Detect D: if drive D: is an IDE drive, the hard disk drive parameters for drive D: are automatically
Color Set sets the WinBIOS Setup screen colors.
detected and reported to the Hard Disk Drive C: screen in Standard Setup, so you can
easily configure drive C:.
detected and reported to the Hard Disk Drive D: screen in Standard Setup, so you can
easily configure drive D:.
Atlas PCI Pentium EISA Motherboard User's Guide
Chapter 6 WinBIOS Setup
Section 3
WinBIOS Password Support
WinBIOS Setup has an optional password feature. The system can be configured so that all users must enter
a password every time the system boots or when WinBIOS Setup is executed.
Setting a Password
The password check option is enabled in Advanced Setup (see page 21) by choosing either Always (the
password prompt appears every time the system is powered on) or Setup (the password prompt appears only
when WinBIOS is run). The password is stored in CMOS RAM.
The system asks for a password.
Enter a 1 – 6 character password. The password does not appear on the screen when typed. Make sure you
write it down. If you forget it, you must drain CMOS RAM and reconfigure the system.
If You Do Not Want to Use a Password
Just press <Enter> when the password prompt appears.
Atlas PCI Pentium EISA Motherboard User's Guide
Changing a Password
Select the Password icon from the Security section of the WinBIOS Setup main menu. Enter the password
and press <Enter>. The screen does not display the characters entered. After the new password is entered,
retype the new password as prompted and press <Enter>.
If the password confirmation is incorrect, an error message appears. If the new password is entered without
error, press <Esc> to return to the WinBIOS Main Menu. The password is stored in CMOS RAM after
WinBIOS completes. The next time the system boots, you are prompted for the password if the password
function is present and is enabled.
Remember the Password
Keep a record of the new password when the password is changed. If you forget the password, remove the
computer cover, set switch 1-2 (the DIAG switch) to ON, power on the computer. WinBIOS will erase the
password.
Chapter 6 WinBIOS Setup
Section 4
Default
The icons in this section permit you to select a group of settings for all WinBIOS Setup options. Not only
can you use these icons to quickly set system configuration parameters, you can choose a group of settings
that have a better chance of working when the system is having configuration-related problems.
Original
Choose the Original icon to return to the system configuration values present in WinBIOS Setup when you
first began this WinBIOS Setup session.
Optimal
You can load the optimal default settings for the WinBIOS by selecting the Optimal icon. The Optimal
default settings are best-case values that should optimize system performance. If CMOS RAM is corrupted,
the Optimal settings are loaded automatically.
Fail-Safe
You can load the Fail-Safe WinBIOS Setup option settings by selecting the Fail-Safe icon from the Default
section of the WinBIOS Setup main menu.
The Fail-Safe settings provide far from optimal system performance, but are the most stable settings. Use
this option as a diagnostic aid if the system is behaving erratically.
Atlas PCI Pentium EISA Motherboard User's Guide
Chapter 6 WinBIOS Setup
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