Table of Contents
Advertisement
Quick Links
Download this manual
See also:
User Manual
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Adaptec AHA-2740W
Summary of Contents for Adaptec AHA-2740W
- Page 1 AHA-2740W/2742W Single-ended AHA-2744W Differential EISA-to-Fast/Wide SCSI Host Adapters Installation Guide...
- Page 2 Copyright Copyright © 1996 Adaptec, Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means; electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035.
- Page 3 Adaptec Technical Support and Services If you have questions about installing or using your Adaptec product, check this doc- ument first—you will find answers to most of your questions here. If you need fur- ther assistance, please contact us. We offer the following support and information...
- Page 4 FCC Compliance Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. 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.
-
Page 5: Table Of Contents
Getting Started 1 Board Layout AHA-2740W and 2742W 2 Board Layout AHA-2744W 3 Default Settings 4 The Onboard Floppy Controller (AHA-2742W and AHA-2744W Only) 4 Installing the Host Adapter 5 Cabling the Host Adapter 5 Connecting Internal SCSI Devices 6... - Page 6 Maximum Sync Xfer Rate 16 Initiate Wide Negotiation 16 Include in BIOS Scan 17 Error if Device Not Found 17 Send Start Unit Command 17 Utilities 17 Operating System Support 17 DOS/Windows 17 Adaptec EZ-SCSI“ Software 18 Other Operating Environments 18 Troubleshooting Checklist 19...
-
Page 7: Getting Started
This document provides the steps required for installation of the AHA -2740W and AHA-2742W single-ended, and the AHA-2744W differential Fast/Wide SCSI Host Adapters. The AHA-2740W and AHA-2742W support single-ended SCSI, while the AHA-2744W supports differential SCSI. In this document, the AHA-2740W, AHA-2742W, and AHA-2744W are referred to jointly as the AHA-2740W/2742W/2744W. -
Page 8: Board Layout Aha-2740W And 2742W
AHA-2740W/2742W/2744W Board Layout AHA-2740W and 2742W Figure 1 shows the location of the major components on the AHA-2740W and AHA-2742W host adapters; Table 1 describes each major component of the AHA-2740W and AHA-2742W. PIN 1 Figure 1. Board Layout for the AHA-2740W and AHA-2742W Table 1. -
Page 9: Board Layout Aha-2744W
Board Layout AHA-2744W Figure 2 shows the location of the major components on the AHA-2744W host adapter; Table 2 describes each major component of the AHA-2744W. Pin 1 Figure 2. Board Layout for the AHA-2744W Location Description Floppy Enable Jumper External LED Connector Floppy Connector 68-pin Wide Differential (16-bit) SCSI Internal Connector... -
Page 10: Default Settings
AHA-2740W/2742W/2744W Default Settings Your host adapter is already configured for the majority of EISA class computers. Table 3 lists the default settings of your host adapter. Refer to Configuring the Host Adapter for information on changing any of these settings. -
Page 11: Installing The Host Adapter
Caution: Turn external equipment. To install the AHA-2740W/2742W/2744W in your EISA computer system, complete the following: Remove the cover of your EISA personal computer to expose the EISA bus slots on the motherboard. -
Page 12: Connecting Internal Scsi Devices
The 68-pin internal and external connector normally accepts 16-bit Wide SCSI devices; however, 8-bit SCSI devices can be connected if they are equipped with 68-pin connectors. The AHA-2740W/2742W/2744W can accommodate a single SCSI bus with up to a total of 15 SCSI devices connected. Caution:... -
Page 13: Maintaining Pin-1 Orientation
Maintaining Pin-1 Orientation When connecting the 50-pin internal SCSI ribbon cables to both the host adapter and internal SCSI device(s), make sure that pin-1 orien- tation is maintained throughout the bus. Pin-1 of the SCSI ribbon cable is designated by a colored stripe on one edge of the ribbon cable. -
Page 14: Connecting Floppy Drives (Aha-2742W And Aha-2744W Only)
AHA-2740W/2742W/2744W Connecting Floppy Drives (AHA-2742W and AHA-2744W Only) Floppy disk drives are connected to the host adapter by a 34-pin floppy ribbon cable with a 34-pin header connector. Up to two floppy diskette drives can be connected to the host adapter. -
Page 15: Configuring Host Adapter Termination
Configuring Host Adapter Termination For the AHA-2740W and AHA-2742W, host adapter termination is determined by the devices connected to the host adapter, is software selectable only, and is controlled through your computer’s EISA configuration utility. Table 4 describes the possible configurations for host adapter termination. - Page 16 AHA-2740W/2742W/2744W Table 5. Termination Configuration for the AHA-2744W High RN1, RN2, RN9, RN10, RN11, and RN12 are 330 ohm resistor networks. RN3, RN4, RN5, RN6, RN7, and RN8 are 150 ohm resistor networks Caution: When reinstalling resistors, you cannot install a 330-ohm resistor into a 150-ohm socket and vice versa.
-
Page 17: Setting The Scsi Id
Note: When reinstalling resistors, be sure to maintain pin-1 orientation as shown below. Pin 1 Pin 1 Figure 4. Pin-1 Orientation on Resistor Networks Setting the SCSI ID Each device located on the SCSI bus must have a unique SCSI ID. The default value for your host adapter (which is just another device on the SCSI bus) is SCSI ID 7. -
Page 18: Configuring The Host Adapter
AHA-2740W/2742W/2744W SCSI ID 0 is best reserved for the SCSI hard disk drive that will be used as your computer’s boot device; SCSI ID 1 is best reserved for a second SCSI hard disk drive. If you are installing more than one SCSI host adapter, each adapter implements a different SCSI bus, so SCSI IDs can be reused. -
Page 19: Select The Host Adapter
Interrupt Level Defines the interrupt channel (IRQ) used by the host adapter. Multi- ple AHA-2740W/2742W/2744W host adapters installed in your sys- tem can share the same IRQ; however, to increase system performance, you may want to select a different IRQ for each host adapter installed. -
Page 20: Host Adapter Scsi Id
AHA-2740W/2742W/2744W Note: The BIOS must be enabled if you want the computer to boot from a SCSI hard drive attached to the host adapter. Host Adapter SCSI ID Defines the SCSI ID (0-15) setting for the host adapter. The default is 7, which is the recommended setting. -
Page 21: Bios Configuration
BIOS Configuration This option allows you to make changes to the configuration of the host adapter BIOS. Use the cursor keys to move between options. To toggle values for each option, press the Support Removable Disks as Fixed Disk Allows you to configure removable media drives supported by the BIOS. -
Page 22: Support For Bootable Cd-Rom
AHA-2740W/2742W/2744W Support for Bootable CD-ROM Allows you to boot from a CD-ROM drive. Support for Int 13h Extensions Provides a mechanism to support disks with more than 1024 cylin- ders, and to add support for software control of device locking for removable media. -
Page 23: Include In Bios Scan
Most devices do not require this. Utilities The following SCSI utility is available with your host adapter: Format Disk–accesses the Adaptec SCSI Low-Level Format utility. Most SCSI disk drives are preformatted, and do not need reformatting. Select Utilities from the ECU to access Format Disk. -
Page 24: Adaptec Ez-Scsi Software
NetWare and Unixware operating systems. The Adaptec 7700 Family Manager Set is included in this package to enable you to install the appropriate driver for your system. Refer to the Adaptec 7700 Family Manager Set User’s Guide (also included) for detailed information. -
Page 25: Troubleshooting Checklist
Check SCSI bus termination. The ends of the SCSI bus must be terminated. If you have installed more than one SCSI host adapter, make sure that each is set to a separate BIOS base address, or disable the BIOS on all but one of the host adapters. Troubleshooting Checklist...
Need help?
Do you have a question about the AHA-2740W and is the answer not in the manual?
Questions and answers