Digital Equipment DECpc AXP 150 Operation manual

DECpcAXP150and
DEC2000Model300AXP
AdaptecAHA-1742ASCSIAdapter
UserInformation
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.
Revision Information: This is a new manual.
Digital Equipment Corporation
Maynard, Massachusetts

First Printing, July 1993
Possession, use, or copying of the software described in this documentation is
authorized only pursuant to a valid written license from Digital, an authorized,
sublicensor, or the identified licensor.
While Digital believes the information included in this publication is correct as
of the date of publication, it is subject to change without notice.
Digital Equipment Corporation makes no representations that the
interconnection of its products in the manner described in this document
will not infringe existing or future patent rights, nor do the descriptions
contained in this document imply the granting of licenses to make, use, or sell
equipment or software in accordance with the description.
© Digital Equipment Corporation 1993.
All Rights Reserved.
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.
OSF/1 is a registered trademark of the Open Software Foundation, Inc.
All other trademarks and registered trademarks are the property of their
respective holders.
This document was prepared using VAX DOCUMENT, Version 2.1.

Contents
Preface ..................................................... v
1 Installing the SCSI Adapter
Introduction . . . ................................... 1–1
About the AHA-1742A SCSI Adapter ................... 1–1
In This Chapter ................................... 1–1
Preparing to Install the SCSI Adapter . . ................... 1–2
Before You Begin .................................. 1–2
Disabling the Floppy Controller .......................... 1–3
Disabling the Floppy Controller ....................... 1–3
Removing the Onboard SCSI Terminators .................. 1–4
Removing the Onboard SCSI Terminators ............... 1–4
Installing the SCSI Adapter. . ........................... 1–5
Installation Procedure . . . ........................... 1–5
Connecting External SCSI Devices ....................... 1–6
Connection Procedure . . . ........................... 1–6
Connection Illustration . . ........................... 1–7
Testing the SCSI Connection ......................... 1–8
Updated SHOW DEVICE Display . . ................... 1–8
2 Configuring the SCSI Adapter
Introduction . . . ................................... 2–1
In This Chapter ................................... 2–1
EISA Configuration Utility (ECU) ........................ 2–2
Running the ECU ................................. 2–2
Changing the Configuration .......................... 2–2
Default Configuration . . . ........................... 2–3
iii

3 Troubleshooting
Summary ........................................ 3–1
Identifying and Solving Problems ..................... 3–1
A Specifications
Introduction ...................................... A–1
In This Appendix . . ................................ A–1
SCSI Adapter Specification ............................. A–2
SCSI Adapter Specification Summary . . ................ A–2
SCSI Port Pin Specification ............................. A–3
Summary ........................................ A–3
SCSI Port Illustration .............................. A–3
SCSI Port Pin Specification . . ........................ A–3
Index
Examples
1–1 Updated SHOW DEVICE Display ..................... 1–8
Figures
1–1 Disabling the Floppy Controller ....................... 1–3
1–2 Removing the SCSI Terminators ...................... 1–4
1–3 Connecting an External SCSI Device . . . ................ 1–7
A–1 SCSI Port ........................................ A–3
Tables
1–1 Preinstallation Procedure............................ 1–2
1–2 Connecting External Devices . ........................ 1–6
1–3 Testing the SCSI Connection Using the SHOW DEVICE
Display . . ........................................ 1–8
2–1 Configuration Settings .............................. 2–2
2–2 Default Configuration .............................. 2–3
3–1 Troubleshooting Table .............................. 3–1
A–1 Specification Table . ................................ A–2
A–2 SCSI Port Pin Specification . . ........................ A–3
iv

Preface
Purpose of This
Manual This manual describes how to install, configure, and use the
Adaptec AHA-1742A SCSI adapter in the DEC™ 2000 Model 300
AXP™ or DECpc™ AXP 150 systems.
Audience 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.
Structure of
This Manual This manual contains three chapters, an appendix, and an index
as follows:
• Chapter 1 describes how to install and use the SCSI adapter.
• Chapter 2 describes how to configure the SCSI adapter.
• Chapter 3 contains troubleshooting information.
• Appendix A lists the specifications for the SCSI adapter.
• The index is a reference to the main topics in the manual.
Associated
Information See the DECpc AXP 150 and DEC 2000 Model 300 AXP
Customer Technical Information manual for associated
information.
v

Conventions The following conventions are used in this manual:
Convention Description
monospace Text displayed on the screen is shown in
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. For example, 1.75 equals one and
three-fourths.
UPPERCASE Words in uppercase indicate a command.
nA lowercase italic nindicates the generic use
of a number. For example, 19nn indicates a
4-digit number in which the last 2 digits are
unknown.
Note A note contains information of special
importance to the reader.
Caution A caution contains information to prevent
damage to the equipment.
vi

1
Installing the SCSI Adapter
Introduction This chapter describes how to install and connect the
AHA-1742A SCSI adapter.
About the
AHA-1742A
SCSI Adapter
The AHA-1742A SCSI adapter provides a diskette drive
controller and it allows you to connect up to seven SCSI devices,
either internal or external, to the system.
In This Chapter This chapter contains the following sections:
• Preparing to Install the SCSI Adapter
• Disabling the Floppy Controller
• Removing the Onboard SCSI Terminators
• Installing the SCSI Adapter
• Connecting External SCSI Devices
Installing the SCSI Adapter 1–1

Preparing to Install the SCSI Adapter
Preparing to Install the SCSI Adapter
Before You
Begin Before you install the AHA-1742A SCSI adapter, you must
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. You must also decide whether
you are using the SCSI adapter to connect internal or external
SCSI devices to the system. Table 1–1 describes the actions you
should take.
Table 1–1 Preinstallation Procedure
Adapter Internal Devices External Devices
First No action required. If you are ready to connect the external SCSI
devices immediately after installing the SCSI
adapter, remove the terminators from the SCSI
adapter. See the section entitled Removing the
Onboard SCSI Terminators for information on
removing the terminators.
Second No internal device
connections permitted. If you are connecting external devices, do the following:
1. Disable the floppy controller on the SCSI
adapter. See the section entitled Disabling
the Floppy Controller for information on
disabling the floppy controller.
2. If you are ready to connect the external SCSI
devices immediately after installing the
SCSI adapter, remove the terminators from
the SCSI adapter. See the section entitled
Removing the Onboard SCSI Terminators for
information on removing the terminators.
1–2 Installing the SCSI Adapter

Disabling the Floppy Controller
Disabling the Floppy Controller
Disabling
the Floppy
Controller
If you are installing a second SCSI adapter in the system, you
must disable the floppy disk controller on the second SCSI
adapter. To disable the floppy controller, remove the jumper from
pin number 1 of J6 on the SCSI adapter. Figure 1–1 shows the
default position of the jumper.
Figure 1–1 Disabling the Floppy Controller
GA_EN00500A_93A
123456
J6
Installing the SCSI Adapter 1–3

Removing the Onboard SCSI Terminators
Removing the Onboard SCSI Terminators
Removing the
Onboard SCSI
Terminators
If you want to connect external SCSI devices to the system unit,
you must remove the three onboard SCSI terminators from
the SCSI adapter. Figure 1–2 shows how to remove the SCSI
terminators ( ! ) from the SCSI adapter.
Figure 1–2 Removing the SCSI Terminators
GA_EN00501A_93A
1
1–4 Installing the SCSI Adapter

Installing the SCSI Adapter
Installing the SCSI Adapter
Installation
Procedure When you have performed the tasks described in the section
entitled 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.
Note
If you are replacing the default SCSI adapter or
installing the first SCSI adapter, you must replace the
SCSI ribbon cables after you have installed the SCSI
adapter.
Installing the SCSI Adapter 1–5

Connecting External SCSI Devices
Connecting External SCSI Devices
Connection
Procedure You must connect all external SCSI devices to the system unit
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
1 Hold in both connector clips on one end of the SCSI cable
and connect it to the SCSI port on the system unit, then
release the clips.
2 Connect the other end of the SCSI cable to the SCSI
device.
3 Set the on/off switches on the device, on other peripherals
connected to the system unit, and on the system unit to
the on position.
1–6 Installing the SCSI Adapter

Connecting External SCSI Devices
Connection
Illustration Figure 1–3 shows how to connect the SCSI device to the system
unit.
Figure 1–3 Connecting an External SCSI Device
2
3
4
5
6SGL
1
GA_EN00321A_93A
Installing the SCSI Adapter 1–7

Connecting External SCSI Devices
Testing
the SCSI
Connection
Table 1–3 lists the steps that you must follow to test the SCSI
connection.
Table 1–3 Testing the SCSI Connection Using the SHOW
DEVICE Display
Step Action Result
1 Enter the SHOW
DEVICE command
( ! ) to display the SCSI
configuration.
The system responds
with a display similar to
Example 1–1.
2 Examine the BOOTDEV
column ( " ) to make sure
that all the devices are
listed.
If a device is not listed, see
Chapter 3 for information on
troubleshooting.
3 Examine the ADDR
column ( # ) to make sure
that the SCSI ID in each
SCSI address is unique.
If the SCSI ID is not unique,
you must reset the SCSI
ID on the new device to an
unused SCSI ID. See the
device documentation for
information on setting the
SCSI IDs.
Updated SHOW
DEVICE Display Example 1–1 shows a sample of an updated SHOW DEVICE
display.
Example 1–1 Updated SHOW DEVICE Display
>>> SHOW DEVICE !
"#
BOOTDEV ADDR DEVTYPE RM/FX DEVNAM REV NUMBYTES
------- ---- ------- ----- ------ --- --------
DKA0 A/0/0 DISK FX RZ25 426.25MB
DKA100 A/1/0 DISK FX RZ25 426.25MB
MKA200 A/2/0 TAPE RM TZK10 0.00KB
DKA400 A/4/0 RODISK RM RRD42 ......
HOST A/7/0 PROC AHA1742/A A
1–8 Installing the SCSI Adapter

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

EISA Configuration Utility (ECU)
EISA Configuration Utility (ECU)
Running the
ECU 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.
Changing the
Configuration You can use the ECU to change the configuration of the SCSI
adapter. Table 2–1 shows the functions and the corresponding
choice of settings that are available for the AHA-1742A SCSI
adapter.
Table 2–1 Configuration Settings
Function Choice of Settings
Host Adapter Interface Enhanced mode only
Host Adapter BIOS BIOS Base Address CC000H
BIOS Base Address D0000H
BIOS Base Address D4000H
BIOS Base Address D8000H
BIOS Base Address DC000H
BIOS Base Address E0000H
BIOS Base Address E4000H
BIOS Base Address E8000H
BIOS Base Address EC000H
BIOS Base Address C8000H
BIOS Disabled
Host Adapter SCSI ID Device ID 7
Device ID 6
Device ID 5
Device ID 4
Device ID 3
Device ID 2
Device ID 1
Device ID 0
SCSI Bus Reset at Power-on Enable SCSI Bus Reset
Disable SCSI Bus Reset
2–2 Configuring the SCSI Adapter

EISA Configuration Utility (ECU)
Default
Configuration Table 2–2 shows the default configuration settings for the
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
Configuring the SCSI Adapter 2–3

3
Troubleshooting
Summary This section describes some of the problems that can occur with
the AHA-1742A SCSI adapter. It suggests possible causes for the
problems and actions that you can take to correct them.
Identifying
and Solving
Problems
Table 3–1 describes how to identify and solve problems by
interpreting correctly the symptoms that are occurring.
Table 3–1 Troubleshooting Table
Symptom Possible Cause Recommended Action
The SCSI adapter
device name does not
appear in the power-up
self-test display.
The SCSI adapter is
not seated firmly. Remove the SCSI adapter and reinsert it firmly in the option slot.
The SCSI adapter is
not correctly configured
or the configuration
conflicts with another
installed option board.
Use the ECU to check the
configuration and if necessary,
reconfigure the SCSI adapter to
resolve the conflict.
The SHOW DEVICE
display does not include
all of the SCSI devices.
The device IDs are set
incorrectly. Check that each SCSI device connected to the SCSI bus has a
unique SCSI ID.
(continued on next page)
Troubleshooting 3–1

Troubleshooting
Table 3–1 (Cont.) Troubleshooting Table
Symptom Possible Cause Recommended Action
The SCSI cable or
device is faulty. Replace the SCSI cable or device. 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
display does not include
the floppy disk.
The diskette drive is
faulty or the ID select
switch is positioned
incorrectly.
See the DECpc AXP 150 and DEC
2000 Model 300 AXP Customer
Technical Information for more
information.
The SCSI adapter or
the system board is
faulty.
See the DECpc AXP 150 and DEC
2000 Model 300 AXP Customer
Technical Information for more
information. If the problem
persists, contact your system
administrator.
You cannot read or
write from a SCSI
device.
The media is faulty. See the DECpc AXP 150 and DEC
2000 Model 300 AXP Customer
Technical Information for more
information on troubleshooting the
SCSI drive.
The error could be a
system error. Enter the SHOW DEVICE command to display the device
configuration.
System displays a SCSI
device error. SCSI bus is not properly terminated. If external devices are connected to the system, check that they are
terminated correctly.
If there are no external devices
connected to the system, check
that the SCSI adapter and the end
of the SCSI cable are terminated
correctly.
(continued on next page)
3–2 Troubleshooting