User Manual
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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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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 All rights reserved. Printed in Singapore STOCK NO.: 510381-00 Rev. Adaptec and the Adaptec logo are registered trademarks of Adaptec, Inc. Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, CA 95035 Copyright © 1993, Adaptec, Inc.
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 All rights reserved. Printed in Singapore STOCK NO.: 510381-00 Rev. Adaptec and the Adaptec logo are registered trademarks of Adaptec, Inc. Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, CA 95035 Copyright © 1993, Adaptec, Inc.
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
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... and USL is subject to change without the prior written consent of the Santa Cruz Operation, Inc.. Copyright Copyright © 1993 Adaptec, Inc. Adaptec and the Adaptec logo are registered trademarks, and AHA, TwinChannel, and PhaseEngine are registered trademarks of Iomega Corporation. IBM, OS/2, AT, and Micro Channel are trademarks of their respective owners...
... and USL is subject to change without the prior written consent of the Santa Cruz Operation, Inc.. Copyright Copyright © 1993 Adaptec, Inc. Adaptec and the Adaptec logo are registered trademarks, and AHA, TwinChannel, and PhaseEngine are registered trademarks of Iomega Corporation. IBM, OS/2, AT, and Micro Channel are trademarks of their respective owners...
User Manual
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... frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. iii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. If this equipment does cause interference to radio or television equipment reception...93 ECN Date: 9/14/93 This equipment generates, uses, and can be attached to this device must have shielded interface cables. Each AHA-2740 Series host adapter is subject to the following measures: • Reorient or relocate the receiving antenna • Move the equipment away...
... frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. iii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. If this equipment does cause interference to radio or television equipment reception...93 ECN Date: 9/14/93 This equipment generates, uses, and can be attached to this device must have shielded interface cables. Each AHA-2740 Series host adapter is subject to the following measures: • Reorient or relocate the receiving antenna • Move the equipment away...
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... 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 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...
... 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 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...
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...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 ...
...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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.../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... Questions and Answers About Extended Translation. . . . . 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. C (Page 0-vii) Print Spec Number: 491709-00 Rev C Current Date...
.../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... Questions and Answers About Extended Translation. . . . . 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. C (Page 0-vii) Print Spec Number: 491709-00 Rev C Current Date...
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... 3-12. Utility Selection 3-20 viii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. AHA-2740 Series User's Manual List of Figures Figure 1-1. Connecting a Second Floppy Drive 2-22 Figure 3-1. External Devices Only 2-10 Figure 2-5. BIOS Configuration Selection 3-13 Figure 3-13. Selecting SCSI Selection Timeout 3-11 Figure 3-9. Selecting SCSI Bus Reset at Power-on the...
... 3-12. Utility Selection 3-20 viii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. AHA-2740 Series User's Manual List of Figures Figure 1-1. Connecting a Second Floppy Drive 2-22 Figure 3-1. External Devices Only 2-10 Figure 2-5. BIOS Configuration Selection 3-13 Figure 3-13. Selecting SCSI Selection Timeout 3-11 Figure 3-9. Selecting SCSI Bus Reset at Power-on the...
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Input Signals A-5 Table A-4. Output Signals A-4 Table A-3. Internal Connector Pin Assignments A-6 Table A-5. External Connector Pin Assignments A-7 Table A-6. Host Adapter Components 1-7 Table 1-2. SCSI Device and AHA Configuration 2-9 Table A-1. Output and Input Signals A-8 ix Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Standard EISA Bus Electronic and Physical Interface A-4 Table A-2. C (Page 0-ix) Print Spec Number...
Input Signals A-5 Table A-4. Output Signals A-4 Table A-3. Internal Connector Pin Assignments A-6 Table A-5. External Connector Pin Assignments A-7 Table A-6. Host Adapter Components 1-7 Table 1-2. SCSI Device and AHA Configuration 2-9 Table A-1. Output and Input Signals A-8 ix Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Standard EISA Bus Electronic and Physical Interface A-4 Table A-2. C (Page 0-ix) Print Spec Number...
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... 3, Configuring the Host Adapter, describes the EISA Configuration utility and how it is also included. Appendix A, Specifications, lists technical specifications of EISA-to-Fast SCSI Host Adapters. xi Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. It also tells you to bypass the DOS 1024 cylinder limit, and supports disk drives...
... 3, Configuring the Host Adapter, describes the EISA Configuration utility and how it is also included. Appendix A, Specifications, lists technical specifications of EISA-to-Fast SCSI Host Adapters. xi Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. It also tells you to bypass the DOS 1024 cylinder limit, and supports disk drives...
User Manual
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... first in body text (.. Conventions The following typographic conventions are used throughout this manual and in SCSI literature in general. press the Enter key ..) and screen selection fields (.. device=c:\adaptec\aspidos.sys ..) and for number ..). is only supported ..) and document reference (.. the autoexec....you locate specific information quickly. The Index helps you must be typed exactly as SCSI and CD-ROM. Italics Used for each chapter. refer to Chapter 2, Setting Up ..). AHA-2740 Series User's Manual The Glossary has definitions of special terms used in this ...
... first in body text (.. Conventions The following typographic conventions are used throughout this manual and in SCSI literature in general. press the Enter key ..) and screen selection fields (.. device=c:\adaptec\aspidos.sys ..) and for number ..). is only supported ..) and document reference (.. the autoexec....you locate specific information quickly. The Index helps you must be typed exactly as SCSI and CD-ROM. Italics Used for each chapter. refer to Chapter 2, Setting Up ..). AHA-2740 Series User's Manual The Glossary has definitions of special terms used in this ...
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... to the system, data, and/or the user. Preface Advisories Advisories are as follows: Note Text set off in injury to the user. Ì xiii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev.
... to the system, data, and/or the user. Preface Advisories Advisories are as follows: Note Text set off in injury to the user. Ì xiii Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev.
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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 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.
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... the same except when regarding the on-board floppy controller on both the AHA-2742 and AHA-2742T. or 16-bit memory. The AHA-2740 Series of Host Adapters The AHA-2740 Series provides a high performance connection between SCSI devices and the computer system memory, without requiring the... transferring data into host memory at burst rates of data transfer available for all four host adapters are referred to -Fast SCSI host adapters in multi-tasking operating systems. Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 1-3) Print Spec Number: 491709-00 ...
... the same except when regarding the on-board floppy controller on both the AHA-2742 and AHA-2742T. or 16-bit memory. The AHA-2740 Series of Host Adapters The AHA-2740 Series provides a high performance connection between SCSI devices and the computer system memory, without requiring the... transferring data into host memory at burst rates of data transfer available for all four host adapters are referred to -Fast SCSI host adapters in multi-tasking operating systems. Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 1-3) Print Spec Number: 491709-00 ...
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... 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 the Host CPU • On-board sequencer (SCSI PhaseEngine) automates all EISA I/O cards, the AHA-...bit host bus data transfer 1-4 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. however, the AHA-2742/2742T does have jumpers to enable or disable the on-board floppy controller. AHA-2740 Series User's Manual The AHA-2740 Series supports only single-ended SCSI devices.
... 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 the Host CPU • On-board sequencer (SCSI PhaseEngine) automates all EISA I/O cards, the AHA-...bit host bus data transfer 1-4 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. however, the AHA-2742/2742T does have jumpers to enable or disable the on-board floppy controller. AHA-2740 Series User's Manual The AHA-2740 Series supports only single-ended SCSI devices.
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...disk 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-...
...disk 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-...
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...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 systems Board Layout Figure 1-1 shows the location of each component. Host Adapter Board Layout 1-6 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 1-6) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN...
...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 systems Board Layout Figure 1-1 shows the location of each component. Host Adapter Board Layout 1-6 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 1-6) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN...
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... Adapter Components Description External LED Connector 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 only) RAM Host Adapter BIOS AIC... Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Host Adapter Default Settings Description Interrupt Level Bus Release Time Data FIFO Threshold Host Adapter BIOS Base Address Host Adapter SCSI ID SCSI Bus Parity Check SCSI Selection Timeout SCSI Bus...
... Adapter Components Description External LED Connector 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 only) RAM Host Adapter BIOS AIC... Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. Host Adapter Default Settings Description Interrupt Level Bus Release Time Data FIFO Threshold Host Adapter BIOS Base Address Host Adapter SCSI ID SCSI Bus Parity Check SCSI Selection Timeout SCSI Bus...
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...Date: 9/14/93 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 extremely sensitive to static electricity; Keep the host adapter in your computer. 1-8 Adaptec AHA-2740 Series User's... Manual Stock Number: 510381-00 / Rev. even a mild shock can be undamaged when you receive it in its conductive wrapping until you purchased the host adapter is responsible for any damage incurred during storage or shipment.
...Date: 9/14/93 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 extremely sensitive to static electricity; Keep the host adapter in your computer. 1-8 Adaptec AHA-2740 Series User's... Manual Stock Number: 510381-00 / Rev. even a mild shock can be undamaged when you receive it in its conductive wrapping until you purchased the host adapter is responsible for any damage incurred during storage or shipment.