Adaptec AHA-2740 Manual de usuario

AHA-2740/2742

Single-Channel

AHA-2740T/2742T

TwinChannel

EISA-to-Fast SCSI Host Adapters

User’s Manual

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page A-1)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

Adaptec, Inc.

691 South Milpitas Boulevard

Milpitas, CA 95035

are registered trademarks of Adaptec, Inc.

Printed in Singapore

STOCKNO.: 510381-00 Rev. C LL 9/93

Information subject to change without notice.

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page A-2)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

AHA-2740/2742

Single-Channel

AHA-2740T/2742T

TwinChannel

EISA-to-Fast SCSI Host Adapters

User’s Manual

▲

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 0-i)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

be reproduced, stored in a retrieval system, or transmittedin any form or by any

means; electronic, mechanical, photocopying, recording or otherwise,withoutthe

prior written consent of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035.

Trademarks

All productnames mentioned belowand in this manual are trademarks orregistered

trademarksof theirrespectiveowners.

Adaptec and the Adaptec logo are registeredtrademarks, and AHA, TwinChannel,

and PhaseEngine are trademarks of Adaptec, Inc.

AT&T isa registered trademark of American Telephone and Telegraph Company.

Bernoulli is a registered trademark of Iomega Corporation.

IBM, OS/2, AT, andMicro Channel are registeredtrademarks of International Busi-

ness Machines Corporation.

MS-DOS is a registered trademark of Microsoft Corporation.

NetWare is a registered trademark of Novell, Inc.

SCO is a registered trademark of the Santa Cruz Operation, Inc..

UNIX is a registered trademark and USL is a trademark of Unix Systems Laboratories.

Changes

The material in this manual isfor information only and issubject to change without

notice. While reasonable efforts have been made in thepreparationof this manual to

assure its accuracy, Adaptec, Inc. assumes no liability resulting from errors or omissions

inthis manual, or from the use of the information containedherein.

Adaptec reserves the right to make changes in the product design without reservation

and without notification to its users.

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 0-ii)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

FCC Compliance Statement

NOTE: This equipment has been testedand found to comply withthe limits for a

Class B digital device, pursuant to Part 15 of the FCCrules. These limits are

designed to provide reasonable protection against harmful interference in residential

installations. This equipment generates, uses, and can radiate radio frequency

energy, and if not installed and used in accordance with the instructions, may cause

harmful interference to radio communications. However, there is no guarantee that

interference will not occur ina particular installation.

If this equipment does cause interference to radio or television equipment reception,

which can be determined by turning the equipment off and on, the user is encour-

aged to try to correct the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna

•Move the equipment away from the receiver

•Plug the equipment into an outlet on a circuit different from that to

which the receiver is powered

•If necessary, the user should consult the dealer or an experienced

radio/television technician for additional suggestions

CAUTION: Only equipment certified to comply with Class B (computer input/output

devices, terminals, printers, etc.) should be attached to thisequipment, and must

have shielded interface cables.

Finally, any change or modifications to the equipment by the user not expressly

approved by the grantee or manufacturer could void the user’s authority to operate

such equipment.

Each AHA-2740 Series host adapter is equipped with an FCC compliance label

which shows only the FCC identification number. The full text of the associated label

follows:

This device complies with part 15of the FCC rules. Operation is subjectto the follow-

ing two conditions: (1) this device maynot cause harmful interference and (2) this

device must accept any interference received, including interference that may cause

undesired operation.

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 0-iii)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

iii

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 0-iv)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

Table of Contents

Preface

Inside This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

Advisories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Introduction

About This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

The AHA-2740 Series of Host Adapters . . . . . . . . . . . . . . . . 1-3

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Fast Data Transfer Rates . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Maximum Off-loading the Host CPU. . . . . . . . . . . . . . . 1-4

Fully Disk Array Capable . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Advanced Fast SCSI-2 Implementation. . . . . . . . . . . . . 1-5

Multiple Device and Applications Support . . . . . . . . . . 1-5

Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Default Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

The On-board Floppy Controller

(AHA-2742/2742T Only) . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Unpacking and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Adaptec Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Getting Started

About This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

The Host Adapter and the SCSI Bus . . . . . . . . . . . . . . . . . . 2-4

Quick Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Prepare Your SCSI Devices . . . . . . . . . . . . . . . . . . . . . . 2-5

Install Your Host Adapter and Peripherals. . . . . . . . . . 2-6

Configure the Host Adapter . . . . . . . . . . . . . . . . . . . . . . 2-7

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Termination on the SCSI Bus. . . . . . . . . . . . . . . . . . . . . 2-9

SCSI IDSetting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Board Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 0-v)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

SCSI Bus Activity LED Connector . . . . . . . . . . . . . . . 2-14

Connecting Peripherals . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Before Re-booting Your System. . . . . . . . . . . . . . . . . . 2-23

Reassemble the System . . . . . . . . . . . . . . . . . . . . . . . . 2-23

Configuring the Host Adapter

About This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

The EISA Configuration Utility. . . . . . . . . . . . . . . . . . . . . . 3-3

Run the EISA Configuration Utility . . . . . . . . . . . . . . . 3-4

Copy Configuration and Overlay Files . . . . . . . . . . . . . 3-4

Select the Host Adapter . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Configure the Host Adapter Parameters . . . . . . . . . . . 3-5

BIOS and Device Configuration. . . . . . . . . . . . . . . . . . 3-12

Exit the EISA Configuration Utility . . . . . . . . . . . . . . 3-19

Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Disk Format Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Host Adapter Diagnostic Utility . . . . . . . . . . . . . . . . . 3-21

Troubleshooting

About This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

SCSI Troubleshooting Checklist . . . . . . . . . . . . . . . . . . . . . 4-3

Problems and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Conflicts With Other Options. . . . . . . . . . . . . . . . . . . . . . . . 4-7

APPENDICES

Specifications

About This Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Technical Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Product Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Extended Industry-Standard Architecture Interface . . . . . A-4

SCSI Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Electrical Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Floppy Disk Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Standard Electronic and Physical Interface . . . . . . . . . A-8

Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 0-vi)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

AHA-2740 Series User’s Manual

I/O Operating Environment

About This Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Host Adapter Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

DOS/Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Optimizing Performance

About This Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Performance Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Enabling Synchronous Negotiation . . . . . . . . . . . . . . . . C-3

Disabling the Host Adapter BIOS . . . . . . . . . . . . . . . . . C-3

Enabling SCSI Bus Parity . . . . . . . . . . . . . . . . . . . . . . . C-4

Setting Enable Disconnection. . . . . . . . . . . . . . . . . . . . . C-4

Send Start Unit Command. . . . . . . . . . . . . . . . . . . . . . . C-4

DOS/Windows Performance . . . . . . . . . . . . . . . . . . . . . . C-5

Disk Drives Over 1 Gigabyte

About This Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Extended Translation (Using DOS 5.0) . . . . . . . . . . . . . . . . D-3

The DOS 1 Gigabyte Limit . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

When to Use Extended Translation . . . . . . . . . . . . . . . . . . . D-4

With DOS Version 5 Only. . . . . . . . . . . . . . . . . . . . . . . . D-4

Drives With Mixed Partitions. . . . . . . . . . . . . . . . . . . . . D-4

Using Fdisk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

Questions and Answers About Extended Translation. . . . . D-5

Glossary

About This Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . Glossary-1

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Glossary-3

Index

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 0-vii)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

Table of Contents

vii

List of Figures

Figure 1-1. Host Adapter Board Layout . . . . . . . . . . . . . . . . 1-6

Figure 2-1. Connectors on the Host Adapter. . . . . . . . . . . . . 2-8

Figure 2-2. Internal and External Devices . . . . . . . . . . . . . . 2-9

Figure 2-3. Internal Devices Only . . . . . . . . . . . . . . . . . . . . 2-10

Figure 2-4. External Devices Only. . . . . . . . . . . . . . . . . . . . 2-10

Figure 2-5. SCSI LED Connector. . . . . . . . . . . . . . . . . . . . . 2-14

Figure 2-6. Connecting Cable to Internal Connector . . . . . 2-17

Figure 2-7. Connecting Cable to SCSI Device. . . . . . . . . . . 2-17

Figure 2-8. Connecting a Second Internal SCSI Device. . . 2-18

Figure 2-9. Connecting External Cable to Host Adapter. . 2-19

Figure 2-10. Connecting External Cable to SCSI Device. . 2-19

Figure 2-11. Connecting Multiple External SCSI Devices. 2-20

Figure 2-12. Connecting Floppy Cable to Host Adapter. . . 2-21

Figure 2-13. Connecting Floppy Cable to Floppy Drive. . . 2-22

Figure 2-14. Connecting a Second Floppy Drive. . . . . . . . . 2-22

Figure 3-1. Host Adapter Parameters. . . . . . . . . . . . . . . . . . 3-5

Figure 3-2. Selecting Interrupt Level . . . . . . . . . . . . . . . . . . 3-6

Figure 3-3. Selecting Bus Release Time . . . . . . . . . . . . . . . . 3-7

Figure 3-4. Selecting Data FIFO Threshold . . . . . . . . . . . . . 3-7

Figure 3-5. Selecting Host Adapter BIOS Base Address . . . 3-8

Figure 3-6. Selecting Host Adapter SCSI ID . . . . . . . . . . . . 3-9

Figure 3-7. Selecting SCSI Bus Parity . . . . . . . . . . . . . . . . 3-10

Figure 3-8. Selecting SCSI Selection Timeout . . . . . . . . . . 3-11

Figure 3-9. Selecting SCSI Bus Reset at Power-on . . . . . . 3-11

Figure 3-10. Configuring SCSI Bus Termination. . . . . . . . 3-12

Figure 3-11. BIOS and Device Configuration. . . . . . . . . . . 3-12

Figure 3-12. BIOS Configuration Selection. . . . . . . . . . . . . 3-13

Figure 3-13. SCSI Device Configuration. . . . . . . . . . . . . . . 3-15

Figure 3-14. Exiting SCSI Device Configuration . . . . . . . . 3-19

Figure 3-15. Utility Selection. . . . . . . . . . . . . . . . . . . . . . . . 3-20

Adaptec AHA-2740 Series User’s Manual

Stock Number: 510381-00 / Rev. C (Page 0-viii)

Print Spec Number: 491709-00 Rev C

Current Date: 9/1/93 ECN Date: 9/14/93

AHA-2740 Series User’s Manual

viii

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