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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
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
User Manual
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All rights reserved. C LL 9/93 Information subject to change without notice. Printed in Singapore STOCK NO.: 510381-00 Rev. Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, CA 95035 Copyright © 1993, Adaptec, Inc. Adaptec and the Adaptec logo are registered trademarks of Adaptec, Inc. C (Page A-2) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93
All rights reserved. C LL 9/93 Information subject to change without notice. Printed in Singapore STOCK NO.: 510381-00 Rev. Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, CA 95035 Copyright © 1993, Adaptec, Inc. Adaptec and the Adaptec logo are registered trademarks of Adaptec, Inc. C (Page A-2) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93
User Manual
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AHA-2740/2742 Single-Channel AHA-2740T/2742T TwinChannel™ EISA-to-Fast SCSI Host Adapters User's Manual v v v v v v v v v v v v 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
AHA-2740/2742 Single-Channel AHA-2740T/2742T TwinChannel™ EISA-to-Fast SCSI Host Adapters User's Manual v v v v v v v v v v v v 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
User Manual
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... Telegraph Company. Changes The material in any form or by any means; NetWare is a registered trademark of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035. ii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. IBM, OS/2, AT, and Micro Channel are ...trademarks of Novell, Inc. AT&T is a registered trademark of Adaptec, Inc. SCO is a registered trademark of the Santa Cruz Operation, Inc...
... Telegraph Company. Changes The material in any form or by any means; NetWare is a registered trademark of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035. ii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. IBM, OS/2, AT, and Micro Channel are ...trademarks of Novell, Inc. AT&T is a registered trademark of Adaptec, Inc. SCO is a registered trademark of the Santa Cruz Operation, Inc...
User Manual
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... These limits are designed to provide reasonable protection against harmful interference in accordance with the instructions, may cause undesired operation. iii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Each AHA-2740 Series host adapter is subject to the following measures: • Reorient or relocate the receiving antenna • Move the equipment...
... These limits are designed to provide reasonable protection against harmful interference in accordance with the instructions, may cause undesired operation. iii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Each AHA-2740 Series host adapter is subject to the following measures: • Reorient or relocate the receiving antenna • Move the equipment...
User Manual
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... 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 2 Getting Started About This...
... 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 2 Getting Started About This...
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...ECN Date: 9/14/93 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 vi Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. AHA-2740 Series User's Manual SCSI Bus Activity LED Connector 2-14 ...Utilities 3-19 Disk Format Utility 3-20 Host Adapter Diagnostic Utility 3-21 4 Troubleshooting About This Chapter 4-1 SCSI Troubleshooting Checklist 4-3 Problems and Solutions 4-4 Conflicts With Other Options 4-7 APPENDICES A Specifications About This Appendix A-1 Technical Information...
...ECN Date: 9/14/93 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 vi Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. AHA-2740 Series User's Manual SCSI Bus Activity LED Connector 2-14 ...Utilities 3-19 Disk Format Utility 3-20 Host Adapter Diagnostic Utility 3-21 4 Troubleshooting About This Chapter 4-1 SCSI Troubleshooting Checklist 4-3 Problems and Solutions 4-4 Conflicts With Other Options 4-7 APPENDICES A Specifications About This Appendix A-1 Technical Information...
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... Adapter Support B-3 DOS/Windows B-3 C 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 D Disk Drives Over 1 Gigabyte About This Appendix D-1 Extended ... 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93 D-5 Glossary About This Glossary Glossary-1 Glossary Glossary-3 Index Index-1 vii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev.
... Adapter Support B-3 DOS/Windows B-3 C 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 D Disk Drives Over 1 Gigabyte About This Appendix D-1 Extended ... 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93 D-5 Glossary About This Glossary Glossary-1 Glossary Glossary-3 Index Index-1 vii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev.
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... 3-12 Figure 3-11. Utility Selection 3-20 viii 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 External Devices Only 2-10 Figure 2-5. Connecting Cable to Host Adapter . . 2-19 Figure 2-10. Connecting Multiple External SCSI Devices. 2-20 Figure 2-12. Selecting Host...
... 3-12 Figure 3-11. Utility Selection 3-20 viii 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 External Devices Only 2-10 Figure 2-5. Connecting Cable to Host Adapter . . 2-19 Figure 2-10. Connecting Multiple External SCSI Devices. 2-20 Figure 2-12. Selecting Host...
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... Components 1-7 Table 1-2. SCSI Device and AHA Configuration 2-9 Table A-1. Standard EISA Bus Electronic and Physical Interface A-4 Table A-2. External Connector Pin Assignments A-7 Table A-6. C (Page 0-ix) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93 Output Signals A-4 Table A-3. Host Adapter Default Settings 1-7 Table 2-1. Output and Input Signals A-8 ix Adaptec AHA-2740 Series User's Manual...
... Components 1-7 Table 1-2. SCSI Device and AHA Configuration 2-9 Table A-1. Standard EISA Bus Electronic and Physical Interface A-4 Table A-2. External Connector Pin Assignments A-7 Table A-6. C (Page 0-ix) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93 Output Signals A-4 Table A-3. Host Adapter Default Settings 1-7 Table 2-1. Output and Input Signals A-8 ix Adaptec AHA-2740 Series User's Manual...
User Manual
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... DOS 1024 cylinder limit, and supports disk drives up to contact Adaptec Technical Support. Chapter 4, Troubleshooting, has information to -Fast SCSI Host Adapters. Appendix A, Specifications, lists technical specifications of EISA-to assist you in troubleshooting problems that may be of use the Adaptec AHA-2740 Series of the host adapter and its connectors, which allows you...
... DOS 1024 cylinder limit, and supports disk drives up to contact Adaptec Technical Support. Chapter 4, Troubleshooting, has information to -Fast SCSI Host Adapters. Appendix A, Specifications, lists technical specifications of EISA-to assist you in troubleshooting problems that may be of use the Adaptec AHA-2740 Series of the host adapter and its connectors, which allows you...
User Manual
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... of the text for operator entry that must determine and type in general. ALL CAPITALS Used for text you locate specific information quickly. xii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. bold Used for number ..). Helvetica Italics Used as a place holder for acronyms, ..... Also used throughout this manual and in SCSI literature in (.. The Index helps you must be typed exactly as SCSI and CD-ROM. End Mark The Ì symbol marks the end of numbered steps. select Backup Device and ..). AHA-2740 Series User's Manual The Glossary has definitions ...
... of the text for operator entry that must determine and type in general. ALL CAPITALS Used for text you locate specific information quickly. xii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. bold Used for number ..). Helvetica Italics Used as a place holder for acronyms, ..... Also used throughout this manual and in SCSI literature in (.. The Index helps you must be typed exactly as SCSI and CD-ROM. End Mark The Ì symbol marks the end of numbered steps. select Backup Device and ..). AHA-2740 Series User's Manual The Glossary has definitions ...
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..., tips, or suggestions which are quick notes that stress an important point or warn of advisory could result in injury to the user. Ì xiii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Caution Failure to observe this type of a potential hazard to the system, data, and/or the user...
..., tips, or suggestions which are quick notes that stress an important point or warn of advisory could result in injury to the user. Ì xiii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Caution Failure to observe this type of a potential hazard to the system, data, and/or the user...
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1 Introduction About This Chapter Read this chapter to find out: • An overview of the AHA-2740 Series of EISA-to-Fast SCSI host adapters • The features of the AHA-2740 Series • The layout of the host adapter and all its major components • The default settings of the host adapter and how to disable or enable the on-board floppy controller • How to get help from Adaptec Technical Support Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 1-1) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93 1-1
1 Introduction About This Chapter Read this chapter to find out: • An overview of the AHA-2740 Series of EISA-to-Fast SCSI host adapters • The features of the AHA-2740 Series • The layout of the host adapter and all its major components • The default settings of the host adapter and how to disable or enable the on-board floppy controller • How to get help from Adaptec Technical Support Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 1-1) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93 1-1
User Manual
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... controller on both the AHA-2742 and AHA-2742T. The AHA-2740 and AHA-2742 support a single SCSI channel (SCSI Channel A), while the AHA-2740T and AHA-2742T support Adaptec's TwinChannel (SCSI Channel A and SCSI Channel B) architecture. In this manual, the AHA-2740 and AHA-2742 are referred to as the AHA-2740... provides information on how to install and configure the AHA™-2740 and AHA-2742 single-channel, and the AHA-2740T and AHA-2742T TwinChannel™ EISA-to-Fast SCSI host adapters in multi-tasking operating systems. Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / ...
... controller on both the AHA-2742 and AHA-2742T. The AHA-2740 and AHA-2742 support a single SCSI channel (SCSI Channel A), while the AHA-2740T and AHA-2742T support Adaptec's TwinChannel (SCSI Channel A and SCSI Channel B) architecture. In this manual, the AHA-2740 and AHA-2742 are referred to as the AHA-2740... provides information on how to install and configure the AHA™-2740 and AHA-2742 single-channel, and the AHA-2740T and AHA-2742T TwinChannel™ EISA-to-Fast SCSI host adapters in multi-tasking operating systems. Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / ...
User Manual
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... all EISA I/O cards, the AHA-2740 Series does not have a single jumper (J4) that is used to enable or disable the on-board floppy controller. Most of the SCSI drives on EISA bus • 2.0 MBytes/sec asynchronous SCSI data rate • 5.0 MBytes/sec synchronous SCSI data rate • 10.0 MBytes/sec synchronous Fast SCSI data rate Maximum Off-loading...
... all EISA I/O cards, the AHA-2740 Series does not have a single jumper (J4) that is used to enable or disable the on-board floppy controller. Most of the SCSI drives on EISA bus • 2.0 MBytes/sec asynchronous SCSI data rate • 5.0 MBytes/sec synchronous SCSI data rate • 10.0 MBytes/sec synchronous Fast SCSI data rate Maximum Off-loading...
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... array vendors Advanced Fast SCSI-2 Implementation • Concurrent support of Fast SCSI, synchronous and asynchronous devices • Concurrent support of both standard and Fast SCSI devices • Scatter/Gather operation • Simultaneous Target/Initiator • Fully multitasking/multithreading • Uses the superior SCSI-2 (Alternative 1) ... AHA-2740/2742 can be used to install up to seven SCSI devices • The AHA-2740T/2742T can be used to install up to 14 SCSI devices • The AHA-2742/2742T can be used to install up to two floppy diskette drives 1-5 Adaptec AHA-2740 ...
... array vendors Advanced Fast SCSI-2 Implementation • Concurrent support of Fast SCSI, synchronous and asynchronous devices • Concurrent support of both standard and Fast SCSI devices • Scatter/Gather operation • Simultaneous Target/Initiator • Fully multitasking/multithreading • Uses the superior SCSI-2 (Alternative 1) ... AHA-2740/2742 can be used to install up to seven SCSI devices • The AHA-2740T/2742T can be used to install up to 14 SCSI devices • The AHA-2742/2742T can be used to install up to two floppy diskette drives 1-5 Adaptec AHA-2740 ...
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... BIOS fully supports the extended parti- Table 1-1 provides a description of the major components on the host adapter; Host Adapter Board Layout 1-6 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. tioning capabilities of DOS 3.3 for up to two drives and DOS 5.0 and above ...for up to seven drives per host adapter, eight total • The AHA-2740 Series supports both fixed and removable media devices with capacities above 1 Gigabyte (GByte) • Managers and device module software available for all major operating...
... BIOS fully supports the extended parti- Table 1-1 provides a description of the major components on the host adapter; Host Adapter Board Layout 1-6 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. tioning capabilities of DOS 3.3 for up to two drives and DOS 5.0 and above ...for up to seven drives per host adapter, eight total • The AHA-2740 Series supports both fixed and removable media devices with capacities above 1 Gigabyte (GByte) • Managers and device module software available for all major operating...
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...Floppy Connector (AHA-2742/2742T only) SCSI Channel A Internal Connector Floppy Enable Jumper (AHA-2742/2742T only) SCSI Channel B Internal Connector (AHA-2740T/2742T only) SCSI Channel A External Connector Floppy Controller (AHA-2742/2742T ...SCSI Chip AIC-701 Configuration Chip Default Settings Your host adapter is already configured for Drives > 1 GByte Support More Than Two Drives Support Removable Disks as Fixed Disks Default Setting IRQ 11, Level Sensitive 60 BCLKS 100% D8000h Device ID 7 Enabled 256 milliseconds Enabled Enabled Enabled Disabled Boot Device Only 1-7 Adaptec AHA-2740...
...Floppy Connector (AHA-2742/2742T only) SCSI Channel A Internal Connector Floppy Enable Jumper (AHA-2742/2742T only) SCSI Channel B Internal Connector (AHA-2740T/2742T only) SCSI Channel A External Connector Floppy Controller (AHA-2742/2742T ...SCSI Chip AIC-701 Configuration Chip Default Settings Your host adapter is already configured for Drives > 1 GByte Support More Than Two Drives Support Removable Disks as Fixed Disks Default Setting IRQ 11, Level Sensitive 60 BCLKS 100% D8000h Device ID 7 Enabled 256 milliseconds Enabled Enabled Enabled Disabled Boot Device Only 1-7 Adaptec AHA-2740...
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...AHA-2740 Series User's Manual The On-board Floppy Controller (AHA-2742/2742T Only) The on-board floppy controller on the AHA-2742/2742T is enabled by default and is controlled by Jumper J4. • If your floppy diskette drives are ready to your computer or floppy controller... component on Jumper J4 and then disable your computer. 1-8 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. ...board floppy controller, leave the jumper shunt installed on the board.... already running under another controller, disable the on-board floppy controller by touching the system ...
...AHA-2740 Series User's Manual The On-board Floppy Controller (AHA-2742/2742T Only) The on-board floppy controller on the AHA-2742/2742T is enabled by default and is controlled by Jumper J4. • If your floppy diskette drives are ready to your computer or floppy controller... component on Jumper J4 and then disable your computer. 1-8 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. ...board floppy controller, leave the jumper shunt installed on the board.... already running under another controller, disable the on-board floppy controller by touching the system ...