American Megatrends Titan II User manual

American Megatrends, Inc.
Titan-II PCI
Pentium

EISA Motherboard
User's Guide
MAN-711
1/6/95

© Copyright 1994 American Megatrends, Inc.
All rights reserved.
American Megatrends, Inc.
6145F Northbelt Parkway
Norcross, GA 30071
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 Megatrends' 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 is a registered trademark of Intel Corporation.
MS-DOS, Xenix, and Microsoft are registered trademarks of Microsoft Corporation.
IBM, AT, VGA, PS/2, OS/2, and EGA are registered trademarks of International Business Machines Corporation. XT and CGA are trademarks of International Business Machines Corporation.
Fujitsu is a registered trademark of Fujitsu America, Inc.
Motorola is a registered trademark of Motorola Corporation.
Hitachi is a registered trademark of Hitachi America, Ltd.
PNY is a registered trademark of PNY Corporation.
Oki is a registered trademark of Oki America, Inc.
NEC is a registered trademark of NEC Corporation.
Samsung is a registered trademark of Samsung Electronics Corporation.
Siemens is a trademark of Siemens Corporation.
Mitsubishi is a registered trademark of Mitsubishi Electronics of America.
Micron is a registered trademark of Micron Corporation.
Unix is a registered trademark of American Telephone and Telegraph Company Bell Laboratories.
Weitek is a trademark of Weitek, Inc.
Toshiba is a registered trademark of Kabushiki Kaisha Toshiba.
Revision History
1/6/95 Initial release.

Titan-II PCI Pentium EISA Motherboard User's Guide
iii
Table of Contents
1 System Overview ...................................................................................... 1
2 Installation ........................................................................................... 9
Unpacking the Motherboard.............................................................................. 9
Step 1.............................................................................................. 11
Step 2 Install Memory.................................................................................. 17
Step 3 Install CPU ............................................................................. 18
Step 4 Install the Motherboard ................................................................... 19
Step 5 Connect the Power Supply ................................................................ 20
Step 6 Connect the Keyboard Cable ............................................................... 22
Step 7 Connect Cables................................................................................. 23
Step 8 Connect the Mouse Cable ................................................................. 24
Step 9 Connect Onboard I/O..................................................................... 25
Step 10 Install Floppy Drive ..................................................................... 26
Step 11 Install Hard Disk........................................................................ 27
Step 12 Install Adapter Cards .................................................................... 28
Step 13 Test and Configure ..................................................................... 29
3AMIBIOS
............................................................................................ 31
Advanced Setup ...................................................................................... 33
Chipset Setup ................................................................................ 39
Power Management Setup .............................................................................. 40
Peripheral Setup ..................................................................................... 42
Peripheral Setup ..................................................................................... 43
4 Flash Programming ......................................................................................... 47
A Upgrading Cache Memory .............................................................................. 49
B Engineering Specifications ............................................................................. 51
Temperature Ranges ............................................................................ 51
Humidity .................................................................................... 51

Preface
iv
Preface
Technical Support
If an American Megatrends motherboard fails to operate as described or you are in doubt about a configuration option, please
call technical support at 404-246-8645.
Acknowledgments
This manual was written by Sudhakaran Valappil and Julia McDonald.

Titan-II PCI Pentium EISA Motherboard User's Guide
1
1 System Overview
The American Megatrends Titan-II motherboard has:
• Single or Dual Intel® P54C Pentium3.3 Volt CPU
operating at 90, 120, or 150 MHz internally,
• six EISA expansion slots, and
• four PCI expansion slots.
The motherboard conforms to the PCI Version 2.0 specification and uses the PCI local bus. The PCI slots operate
synchronously with the CPU clock. The following table illustrates the frequency assignments:
CPU External Clock Frequency PCI Expansion Slots Frequency
66 MHz 33 MHz
60 MHz 30 MHz
50 MHz 25 MHz
The frequency will vary according to the version of the motherboard ordered.
The PCI expansion slots are automatically configured by the onboard American Megatrends WINBIOS system BIOS.
Motherboard Dimensions
The Titan-II PCI Pentium EISA motherboard is approximately 12.1 inches wide by 13.8 inches long (the standard full
AT® motherboard size with similar mounting hole locations).
Processor Type and Speed
The motherboard uses a 3.3V 90, 120, or 150 MHz (internal speed) Intel P54C or P54CT Pentium CPU operating
externally at 50, 60, or 66 MHz in the single processor mode. There are two CPU sockets on the motherboard to
support dual processors. Refer to page 18 for instructions on upgrading to dual processors.

Chapter 1 System Overview
2
Description
Note
The motherboard is not field upgradeable
from one speed to another.
Heat Sink with Fan
A heat sink with fan must be used with all Intel Pentium CPUs on all Pentium motherboards.
Caution
Adequate air flow in the chassis must be provided
when using dual processors. Installation of an
8 cm 0.2 amp fan at the front of the chassis is
recommended to pull air in. This is in addition to the
fan at the back of the case which pulls air out.
Main System Memory
The motherboard requires Fast Page Mode SIMMs operating at 70 ns (RAS access time). The motherboard supports
up to 256 MB of onboard system memory via four 64-bit banks with the following types of SIMMs (Single Inline
Memory Modules). Either two, four, six or eight SIMMs must be mounted.
SIMM Type
256 KB x 36 SIMMs
512 KB x 36 SIMMs
1 MB x 36 SIMMs
2 MB x 36 SIMMs
4 MB x 36 SIMMs
8 MB x 36 SIMMs
16 MB x 36 SIMMs
Fast ATA
This motherboard supports the Fast ATA specification.

Titan-II PCI Pentium EISA Motherboard User's Guide
3
Description, Continued
L2 Secondary Cache Memory
• The motherboard supports 256 KB or 512 KB of direct
mapped, write-back L2 external (secondary) cache
memory.
• Thirty-two (32) pin sockets exist for 256 KB/512 KB of
DIP L2 cache memory.
• The external (secondary) cache memory is mounted on the
motherboard in two rows of four SRAMs each.
• For 256 KB cache with a 60/90 MHz CPU, the SRAM is
15 ns 32 KB x 8 3.3V SRAMs.
• For upgrading to 512 KB the 32 KB x 8 3.3V SRAMs
should be replaced by 64 KB x 8 15 ns 3.3V SRAMs in
the same sockets.
• For a 66/100 MHz CPU, 12 ns SRAMs should be used.
Caution
You must use 3.3V SRAMs when upgrading from
256 KB to 512 KB of L2 cache memory.
Shadowed ROM areas such as the system BIOS and Video BIOS can be cached and write-protected via Advanced
Setup. Cache memory is enabled and disabled through WINBIOS Setup Advanced Setup.
Amount of System Memory That Can be Cached
All installed system memory can be read from or written to L1 internal cache memory and L2 external cache memory.
Hardware Reset Switch
The Titan-II PCI Pentium EISA motherboard has a standard two-pin reset connector.
Pentium Internal Cache Memory
The Intel Pentium has an 8 KB data cache and an 8 KB code cache. This cache memory can be placed in either write-
back or write-through mode via Advanced Setup in WINBIOS Setup.

Chapter 1 System Overview
4
Description, Continued
Shadow RAM
The system BIOS ROM is always shadowed. Video BIOS and Adaptor ROM shadowing can be enabled via Advanced
Setup in 16 KB increments.
System BIOS
The Titan-II PCI Pentium EISA motherboard has a 128 KB WINBIOS with built-in WINBIOS Setup and user-
definable hard disk drive types. The BIOS is stored in Flash EPROMs and can be reprogrammed via software without
removing the ROM.
CMOS RAM
The Titan-II PCI Pentium EISA motherboard has 114 bytes of CMOS RAM on the Real Time Clock. The contents of
CMOS RAM are configured by AMIBIOS Setup, resident with the system BIOS on the Flash EPROM. There is also
an additional 8 KB of EISA Extended CMOS RAM.
Real Time Clock
The motherboard has a real time clock and CMOS RAM with built-in battery backup for WINBIOS Setup.
Onboard I/O
• two 40-pin IDE connectors for up to four IDE drives,
with PCI local bus IDE Mode 3 support,
• a 34-pin connector to a floppy controller that supports up
to two 720 KB, 1.2 MB, 1.44 MB, or 2.88 MB floppy
drives with vertical recording support for 2.88 MB
floppies,
• two ten-pin connectors for serial ports,
• a 26-pin connector for one bidirectional parallel port (with
ECP and EPP support) on the motherboard, and
• a 10-pin berg for a PS/2 mouse connector.

Titan-II PCI Pentium EISA Motherboard User's Guide
5
Description, Continued
Up to Four IDE Drives
The motherboard supports up to four IDE drives through two 40-pin IDE connectors, marked Primary and Secondary.
IDE Drive Assignments
If four IDE drives are connected, WINBIOS assigns the physical drive numbers; DOS assigns the logical drive letters
as follows:
IDE Drive Drive
Number
Drive Letter if
One Partition
on Drive
Drive Letter if
Two Partitions
on Drive
Primary Master 80h C:\ G:\
Primary Slave 81h D:\ H:\
Secondary
Master
82h E:\ I:\
Secondary Slave 83h F:\ J:\
IDE Autodetect
All IDE drives assigned to the secondary IDE connector are autodetected.
Caution
If the parameters for an IDE drive cannot be automatically
detected by WINBIOS correctly, or if you are using a CHS
(Cylinder-Head-Sector) translation mechanism that is
different than the native mode of the IDE drive, the drive
should not be attached to the secondary IDE controller.
Power Management
The motherboard supports power management services, including: Green PC LED, signals to control Green PC-aware
power supplies, automatic power down of IDE drives and video monitor and monitor blanking (HSYNC, VSYNC, and
SYNCEN). The EPA Green PC specification is supported through the Megakey keyboard controller. The SMI
(System Management Interrupt), APM, and system stop clock are supported.

Chapter 1 System Overview
6
Description, Continued
Seven DMA Channels
There are seven DMA channels.
Timer Features
The motherboard has three programmable 16-bit counter/timers.
Refresh Generation
The Titan-II PCI Pentium EISA motherboard has a refresh generation feature.
I/O Capability
The motherboard accesses 32-, 16- or 8-bit I/O devices on the EISA bus and 32-bit devices on the PCI bus.
Green PC Monitor Connector
A 10-Pin dual-in-line connector for Green PC monitor support through the feature connector.
Fifteen Interrupt Levels
There are 15 hardware interrupt levels. The NMI takes precedence over all hardware interrupts. IRQs 3, 4, 5, 7, 9, 10,
11, 12, 14, and 15 can be allocated for use on either the ISA bus or the PCI bus.
EISA Bus
The EISA bus in the motherboard has a system clock that is generated by the bus clock (BCLK) and operates at
approximately 8 MHz.