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Digital Equipment DECpc AXP 150 User Information

Scsi adapter
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DECpc AXP 150 and
DEC 2000 Model 300 AXP
Adaptec AHA-1742A SCSI Adapter

User Information

Order Number: EK-A0652-UG.001
July 1993
This manual describes how to install, configure, and use the Adaptec
AHA-1742A SCSI adapter for the DEC 2000 Model 300 AXP and DECpc
AXP 150 systems.
This is a new manual.
Revision Information:
Digital Equipment Corporation
Maynard, Massachusetts

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  • Page 1: User Information

    DECpc AXP 150 and DEC 2000 Model 300 AXP Adaptec AHA-1742A SCSI Adapter User Information Order Number: EK-A0652-UG.001 July 1993 This manual describes how to install, configure, and use the Adaptec AHA-1742A SCSI adapter for the DEC 2000 Model 300 AXP and DECpc AXP 150 systems.
  • Page 2 The postpaid Reader’s Comments form at the end of this document requests your critical evaluation to assist in preparing future documentation. The following are trademarks of Digital Equipment Corporation: AXP, DEC, DECpc, Digital, OpenVMS, VAX DOCUMENT, the AXP logo, and the DIGITAL logo.

  • Page 3: Table Of Contents

    Contents Preface ........... . . 1 Installing the SCSI Adapter Introduction .
  • Page 4 3 Troubleshooting Summary ........3–1 Identifying and Solving Problems .
  • Page 5 This manual is intended for anyone installing, configuring, or using the Adaptec AHA-1742A SCSI adapter in the DEC 2000 Model 300 AXP or DECpc AXP 150 systems. It is written for both experienced and inexperienced users. This manual contains three chapters, an appendix, and an index...
  • Page 6 The following conventions are used in this manual: Conventions Convention Description Text displayed on the screen is shown in monospace monospace type. italic type Italic type emphasizes important information, indicates variables, and indicates complete titles of manuals. n.nn A period in numerals signals the decimal point indicator.

  • Page 7: Introduction

    Installing the SCSI Adapter Introduction This chapter describes how to install and connect the AHA-1742A SCSI adapter. About the The AHA-1742A SCSI adapter provides a diskette drive AHA-1742A controller and it allows you to connect up to seven SCSI devices, SCSI Adapter either internal or external, to the system.

  • Page 8: Preinstallation Procedure

    Preparing to Install the SCSI Adapter Preparing to Install the SCSI Adapter Before You Before you install the AHA-1742A SCSI adapter, you must Begin determine if it is the first or the second SCSI adapter in the system. If it is the second SCSI adapter in the system, you must disable the floppy disk controller.

  • Page 9: Disabling The Floppy Controller

    Disabling the Floppy Controller Disabling the Floppy Controller Disabling If you are installing a second SCSI adapter in the system, you the Floppy must disable the floppy disk controller on the second SCSI Controller adapter. To disable the floppy controller, remove the jumper from pin number 1 of J6 on the SCSI adapter.

  • Page 10: Removing The Scsi Terminators

    Removing the Onboard SCSI Terminators Removing the Onboard SCSI Terminators Removing the If you want to connect external SCSI devices to the system unit, Onboard SCSI you must remove the three onboard SCSI terminators from Terminators the SCSI adapter. Figure 1–2 shows how to remove the SCSI terminators ( ) from the SCSI adapter.

  • Page 11: Installing The Scsi Adapter

    Preparing to Install the SCSI Adapter , you are ready to install the SCSI adapter. For information on opening the system unit and installing an option board see the DECpc AXP 150 and DEC 2000 Model 300 AXP Customer Technical Information manual.

  • Page 12: Connecting External Devices

    Connecting External SCSI Devices Connecting External SCSI Devices You must connect all external SCSI devices to the system unit Connection Procedure before system power-up. Table 1–2 describes how to connect an external SCSI device to the system. Table 1–2 Connecting External Devices Step Action Hold in both connector clips on one end of the SCSI cable...

  • Page 13: Connecting An External Scsi Device

    Connecting External SCSI Devices Figure 1–3 shows how to connect the SCSI device to the system Connection Illustration unit. Figure 1–3 Connecting an External SCSI Device GA_EN00321A_93A Installing the SCSI Adapter 1–7...

  • Page 14: Troubleshooting

    Connecting External SCSI Devices Testing Table 1–3 lists the steps that you must follow to test the SCSI the SCSI connection. Connection Table 1–3 Testing the SCSI Connection Using the SHOW DEVICE Display Step Action Result Enter the SHOW The system responds DEVICE command with a display similar to ( ) to display the SCSI...

  • Page 15: Introduction

    Configuring the SCSI Adapter Introduction This chapter describes how to configure the system after you have installed the AHA-1742A SCSI adapter. This chapter contains the following section: In This Chapter • EISA Configuration Utility (ECU) Configuring the SCSI Adapter 2–1...

  • Page 16: Configuration Settings

    To configure the Ethernet controller within the system or to change the configuration settings, you must run the ECU. See the DECpc AXP 150 and DEC 2000 Model 300 AXP Customer Technical Information manual for information on running the ECU.

  • Page 17: Default Configuration

    EISA Configuration Utility (ECU) Default Table 2–2 shows the default configuration settings for the Configuration AHA-1742A SCSI adapter. Table 2–2 Default Configuration Function Default Setting Host Adapter Interface Enhanced Mode Host Adapter BIOS BIOS Base Address CC000H Host Adapter SCSI ID Device ID 7 SCSI Bus Reset at Power-on Enable SCSI Bus Reset...

  • Page 19: Identifying And Solving Problems

    Troubleshooting This section describes some of the problems that can occur with Summary the AHA-1742A SCSI adapter. It suggests possible causes for the problems and actions that you can take to correct them. Identifying Table 3–1 describes how to identify and solve problems by and Solving interpreting correctly the symptoms that are occurring.
  • Page 20 Possible Cause Recommended Action The SCSI cable or Replace the SCSI cable or device. device is faulty. See the DECpc AXP 150 and DEC 2000 Model 300 AXP Customer Technical Information for more information on replacing cables and devices. The SHOW DEVICE...
  • Page 21 DEC 2000 Model 300 AXP Customer Technical Information for information on testing the SCSI adapter. The error code could be See the DECpc AXP 150 and DEC a system error code. 2000 Model 300 AXP Customer Technical Information for more information. If the problem persists, contact your system administrator.

  • Page 23: In This Appendix

    Specifications Introduction This appendix lists the specifications for the AHA-1742A SCSI adapter and the SCSI port. In This This appendix contains the following sections: Appendix • SCSI Adapter Specification • SCSI Port Pin Specification Specifications A–1...

  • Page 24: Scsi Adapter Specification

    SCSI Adapter Specification SCSI Adapter Specification Table A–1 lists the physical specifications for the AHA-1742A SCSI Adapter Specification SCSI adapter. Summary Table A–1 Specification Table Power Requirements DC Amps @ 5V ± 0.25V 2.9 Amps (maximum) Operating Environment Operating temperature 0°C to 55°C Storage temperature 40°C to 75°C...

  • Page 25: Summary

    SCSI Port Pin Specification SCSI Port Pin Specification This section lists the pin specifications for the SCSI port. Summary SCSI Port Figure A–1 shows the pin numbers on the SCSI port. Illustration Figure A–1 SCSI Port GA_EN00290A_93A Table A–2 describes the functions of the pins on the SCSI port. SCSI Port Pin Specification Table A–2 SCSI Port Pin Specification...

  • Page 26: Scsi Port Pin Specification

    SCSI Port Pin Specification Table A–2 (Cont.) SCSI Port Pin Specification Function Function Chassis ground Chassis ground Not used Term power Chassis ground Chassis ground Chassis ground Chassis ground Chassis ground SCSI bus ATN Chassis ground Chassis ground Chassis ground SCSI bus BSY Chassis ground SCSI bus ACK...

  • Page 27: Changing The Configuration

    Index Specifications SCSI adapter specification, A–2 SCSI port pin specification, A–3 Configuring the SCSI adapter changing the configuration, 2–2 configuration settings, 2–2 running the ECU, 2–2 Troubleshooting, 3–1 EISA Configuration Utility, 2–2 External SCSI devices, 1–2 connecting, 1–6 testing the connection, 1–8 Floppy controller, 1–2 disabling, 1–3 Installing the SCSI adapter...

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Dec 2000 300 axpAdaptec aha-1742a

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