Adaptec AMM-1572, AMM-1570 User Manual

AMM-1570/1572 User’s Guide Stock Number: 510526-00 , Rev. B FRONT COVER Print Spec. Number: 492379-00 Current Date: 3/7/94 ECN Date: 3/8/94

AMM-1570 /1572

SCSI Audio Host Adapter

User’ s Guide

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AMM-1570/1 57 2

SCSI Audio Host Adapter

User’ s Guide

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Copyright

Copyright © 1994 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 Mi lpitas Blvd., Milpitas, CA 95035.

Trademarks

Adaptec and the Adaptec logo are registered trademarks, and AHA is a trademark of Adaptec, Inc.

AT&T is a registered trademark of American Telephone and Telegraph Company. AT, IBM, Micro Channel, and OS/2 are registered trademarks of International

Business Machines Corporation. Bernoulli is a registered trademark of Iomega Corporation. MS, MS-DOS, and Xenix are registered trademarks of Microsoft Corporation. NetWare is a registered trademark of Novell, Inc. SCO is a registered trademark of Santa Cruz Operation, Inc. VL-Bus is a trademark of Video Electronics Standards Association. UNIX is a registered trademark of Unix System Laboratories. All other product names are t rademarks or registered trademarks of their respective

owners.

Changes

The material in this User’s Guide is for information only and is subject to change without notice. While reasonable efforts have been made in the preparation of this User ’s Guide to assure its accuracy, Adaptec, Inc. assumes no liability resulting from errors or omissions in this User’s Guide, or from the use of the information contained herein.

Adaptec reserves the right to make changes in the product design without reservation and without notification to its users.

Adaptec Technical Support

AMM-1570/1572 host adapters have been specifically developed for easyinstallation and use. We believe that our User’s Guide and the onscreen instructions and help are complete and clear enough to meet your needs. If you need further help, please contact us.

● The Adaptec Electronic B ulletin Board Service (BBS) provides information on

software upgrades, new releases, technical advice, and other topics. The BBS is available 24 hours a day at 408-945-77 27; 1200/2400/9600/14400 baud, 8 da ta bi ts, 1 stop bit, no parity.

● To contact the Adaptec Technical Support Hot Line, call 800-959-SCSI (7274) or

408-945-2550; M–Th: 6:00 a.m. to 5:00 p.m., F: 6:00 a.m. to 3:00 p.m., Pacific Time.

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Interactive FAX Service

The Adaptec Interactive FAX Service provides the latest online information about Adaptec products and services. The Adaptec Interactive FAX Service is available 23 hours a day, seven days a week, at 408-957-7150.

Ordering Software and Cables

T o order Adaptec software and SCSI cables, call 800-442- SCSI (727 4), M–F: 5:00 a.m. to 6:00 p.m., Pacific Time.

Literature Hotline

To request additional documentation for Adaptec products, call 800-934-2766, M–F: 5:00 a.m. to 6:00 p.m., Pacific Time.

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 inter ference in residential installations. This equi pment 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. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause interference to radio or television equipment reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Move the equipment away from the receiver

• Plug the equipment into an outlet on a circuit different from that to which the receiver is powered

• If necessary, the user should consult the dealer or an exp eri en ced radio/telev ision te chnician for additional suggestions

CAUTION: Only equipment certified to comply with Class B (computer input/output devices, terminals, printers, etc.) should be attached to this equipment, and must have shielded interface cables.

Finally, any changes or modifications to the equipment by the user not expressly approved by the grantee or manufacturer could void the user ’ s authori ty to operate such equipment.

Each AMM-1570/1572 host adapter is equippe d with an FCC compliance label whi ch shows only the FCC identification number. The full text of the associated label follows:

This device compli es with par t 15 of the FCC rules. Oper ation is subject to t he followi ng two conditions: (1) this device m ay not cause harmful interference and (2) this device must accept any inter ference received, including interference that may cause undesired operation.

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1 Introduction

Table of Contents

Preface

Inside This User’s Guide xi Conven t ions xiii Adviso ries xiv

About This Chapter 1-1 Overview 1-3 What is the AMM-1570/1572? 1-3 System Requirements 1-4 Board Layout 1-4 Features 1-5

SCSI Module 1-5 Configurat ion Flexibility 1-5

Audio Module 1-6 Adaptec Software 1-7 Avoid Stati c Elect r icit y 1-7 Number and Types of SCSI Devices 1-7 Types of Audio Equipment 1-7 Types of Cables Required 1 -8 Maximum Cable Lengths 1-8 External SCSI Connect o r Mount ing Brac ket 1-8

2 Configuring the AMM-1570/1572

About This Chapter 2-1 Preparing Y our Devic es for Instal l ation 2-3 Termination on the SCSI Bus 2-3

Terminating SCSI Devices 2-6

Terminating the AMM-1570/1572 2-6 SCSI IDs on the SCSI Bus 2-7

Setting the SCSI ID on the AMM-1570/1572 2-8

Setting the SCSI ID on Other SCSI Devices 2-8

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Default Settings 2-8 Configuring the AMM-1570/1572 2-10

Installing and Removing Jumper Connectors 2-10 Jumper Block Locations 2-10 Jumper Block J5 2-11 Jumper Block J6 2-15 Jumper Block J7 (AMM-1572 only) 2-17 Jumper Block J8 2-17 Jumper Block J9 2-17 Jumper Block J17 2 -19

3 Installing the AMM-1570/1572

About This Chapter 3-1 Installation Overview 3-3 Quick Installatio n 3-3 Detailed Installation 3-5

Installing the Host Adapter 3-6 Installing the External SCSI Connec tor

Mounting Bracket 3-8 Cabling the Host Adapter 3-9 Connect ing the SCSI Bus Activit y LED 3-16 Connecting Audio Equipm ent 3-17 Installing Adaptec Software 3-19

Before Restart ing Your System 3-20 Reassemble the System 3-20

4 Troubleshooting

About This Chapter 4-1 SCSI Troubleshoo ting Chec klis t 4-3 Operating Problems 4-4 ASPI Manager Error Messages 4-7

aspi2dos.sys Error Messages 4-7 aspidisk.sys Error Messages 4-7 Other Error Messages 4-8

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A Specifications

About This Appendix A-1 Technical In formation A-3 Product Specifications A-3

Physical Dim ensions A-3 Power Requirements A-3 Environmen tal Req uirem ent s A-3

SCSI Interface A-4

Electrical Interface A-4

Floppy Disk Interface A-7

Standard Electronic and Physical Interface A-7 Connector A-7

Audio Input Connector (J4) Pinout s A-7

B I/O Operating Environment

About This Appendix B-1 Host Adapter Support B-3

DOS/W indo w s B-3 Adaptec EZ-SCSI B-4

Table of Contents

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 Parity Checking C-3 Setting Enable Disconnec tion C-4 Fast SCSI Operation C-4 DOS/Windows Performance C-4

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D Disk Drives Over 1 GByte

About This Appendix D-1 Extended Transl ation (Using MS-DOS 5.0) D-3 The DOS 1 GByte Limit D-3 When to Use Extended Translation D-3

With MS-DOS 5.0 and Above D-3 Drives With Mixed Partitions D-4 Using Fdisk D-4

Questions and Answers About Extended

Translation D-4

Glossary Index

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List of Figures

Figure

1-1 Board Layout 1-4 2-1 Termination With Internal and Exter nal Devic es 2-4

2-2 Termination With Internal Devices Only 2-5 2-3 Termination With External Devices Only 2-5 2-4 Terminators 2-6 2-5 Pin 1 Orientation on the Termin ators 2-7 2-6 Jumper Block Locations 2-10

3-1 Connectors on the Host Adapter 3-5 3-2 Unused Expansion Bus Slot 3-6 3-3 Installing the Hos t Adapter 3-7 3-4 Installing the External Mounting Bracket 3-8 3-5 Connect ing Bracket Ribbo n Cable to the

Host Adapter 3-9

3-6 50-pin SCSI Ribbon Cable to Host Adapter 3-10 3-7 50-pin SCSI Ribbon Cable to Internal SCSI Device 3-11 3-8 Connecting a Second Intern al SCSI Device 3-11 3-9 External Cable to Host Adapter 3-12 3-10 External Cable to External SC SI Device 3-13 3-11 Connecting Multiple External SCSI Devices 3-13 3-12 34-pin Floppy Cable to Host Adapter 3-14 3-13 34-pin Floppy Cable to First Floppy Driv e 3-15 3-14 Connecting a Second Floppy Drive 3-15 3-15 SCSI LED Connecto r 3-16 3-16 Connect ing Aud io Equipm ent to the

Host Adapter 3-17

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Preface

Inside This User’s Guide

This User’ s Guide provides complet e inst ruct io ns on how to install and use the Adaptec AMM-1570/1572 SCSI Audio Host Adapter.

Chapter 1 Introduction

provides an overview of the AMM-1570/1572. The system requirements, board layout, features, and general information o n use are also included.

Chapter 2 Configuring the A MM-1570/1572

discusses the importance of termination and SCSI IDs on the SCSI bus. The default settings and instructions on changing termination and configuring the jumper blocks settin gs are also included.

Chapter 3 Installing the AMM-1570/1572

has the information needed to install the host adapter, and connect SCSI devices and audio equipment .

Chapter 4 Troubleshooting

has information to assist you in troubleshooting problems that may occur during con figurat io n, installation, and operation.

Appendix A Specifications

lists technical specifications of the host adapter and its connectors, which may be of use to the advanced user or technicia n.

Appendix B I/O Operating Environment

provides information on using your host adapter with operating systems , such as DOS/Windows. A brief discussion on Adaptec EZ-SCSI and Adaptec EZ-Audio softw are is also inclu ded.

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Appendix C Optimizing Performance

has various tips on maximizing the performanc e of your host adapter.

Appendix D Disk Drives Over 1 GByte

describes Adaptec's extended translation feature which allows you to bypass the DOS 1024 cylinder limit, and supports disk drives up to 8 Gigabytes (GBytes) in siz e.

Glossary

has definitions of special terms used in this manual and in SCSI literature in general.

Index

helps you locate specific informat ion quickly.

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Conventions

The following typographic conventions are used in this man u a l.

bold Used for keystrokes (… press the Enter key …).

Helvetica

Used for operator entry that mus t be typed exactly as shown (… device=c:aspi2dos.sys …) and for messages on the screen (… Enter Password …).

Helvetica Italics

Used as a place holder for text you must determ ine

nn

and type in (… enter program and file names that appear in body text (… the

autoexec.bat

Italics

Used for emphasis (… is only supported …) and for document references (… refer to Chapter 1, Introduction…).

for number …). Also used for

file …).

Hexadecimal Numbers Are followed by an ‘h’, e.g., 330h.

End Mark

❐symbol marks the end of a chapter or other

The section.

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Advisories

Adviso ries are quick notes that stress an important point or warn of a potential hazard t o your system or your data. This manual uses three kinds of advisories:

Note: Text set off in this way presents

reminders, tips, or suggest ions that may make it easier for you to install, configure, and use Adaptec software products and your host adapter.

Caution: Failure to observe this kind of

advisory could result in loss of data or damage to your system and install ed devic es.

WARNING: Failure to observe this kind of

advisory could result in pers onal injury.

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1

Introduction

About This Chapter

Read this chapter to find out

■ An overview of the AMM-1570/1572

■ The minimum system requirements needed

to install the AM M -1570/1572

■ The location of the major components on

the AMM-1570/1572

■ The features of the AMM-1570/1572

■ General informatio n o n using the

AMM-1570/1572

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Overview

This user’s guide provides information on how to install and configure the Adaptec AMM-1570 and AMM-1572 SCSI Audio Host Adapters. The AMM-1572 is identical to the AMM-1570 except that it has an onboard floppy disk cont roller that suppo rts up to two floppy disk drives. In this user’s guide, the AMM-1570 and AMM-1572 are referred to jointly as the AMM-1570/1572.

What is the AMM-1570/1572?

The AMM-1570/1572 provides full SCSI host adapter functionality and superior audio perform ance for your SCSI and multim edia devices. This is accomplished through the integration of two discrete functional modules onto a single board: A SCSI module and an audio module.

The AMM-1570/1572 SCSI module provides a powerful multitasking interface between the ISA bus and the SCSI bus featuring 16-bit transfer capability. Up to seven individually configured SCSI devices can be connected to and supported simultaneously by the AMM-1570/1572.

The AMM-1570/1572 audio module is based on a Digital Signal Processor (DSP) that can off load many com puter intens ive audio and video processing tasks from the host adapter. Through the input and output jacks, a variety of audio equipment can be connected to the AMM-1570/1572. The audio mod u le provides

■ Digital audio recording and playback with com pression

■ Audio synthesis

■ Musical Instrument Digital Interface (MIDI) recording and

playback

■ Joystick game port interface

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System Requirements

The following minimum requirements are needed to install the AMM-1570/1572:

■ An 80386SX 25 megahertz (MHz) computer or higher

■ An available 16-bit expansion bus slot

■ Microsoft Windows 3.1 or higher

■ Four megabytes (MByte) or more of RAM

■ A Video Graphics Array (VGA) monitor and VGA display card

■ A hard disk with 10 MByt es or mo re of free space

■ A 3.5-inch, high-density (1.4 4 MByte) floppy disk drive

Board Layout

Figure 1-1 shows the locat ion of the major component s on the host adapter.

LED Connector

J7

J6 J5

Wavetable ROM

Floppy Drive Controller

AMM-1572 Onl

1-4

Floppy Drive

Connector

(AMM-1572 Only)

J9

Internal

SCSI

Connector

Terminators

J8

J17

BIOS

Sound Chip

DSP Chip Bus Interface Chip

AIC-6360 SCSI Protocol Chip

Figure 1-1. Board Layout

External SCSI Connector

J4

CD Audio Input Connector

Headphones/ Speakers

Line Out Line In Microphone

Joystick/ MIDI Port

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Features

SCSI Module Configuration Flexibility

■ One internal 50-pin SCSI connector for connecting standard

8-bit internal SCSI device s

■ One external 50-pin SCSI connect o r for connecting st andard

8-bit external SCSI devices

■ Provides easy installation and use with Adaptec EZ-SCSI and

Adaptec EZ-Audio software

Multiple Device and Applications Support

■ Supports up to seven individually configured SCSI devic es,

simultaneous ly

■ Supports any two floppy drives, includ ing 2.8 8 MByte

■ Supports hard disk drives, removable magneto/optical drives,

CD-ROM drives , and Photo CD

■ Compatibl e with DOS, Windows, third-party softw are, and

SCSI-1 and SCSI-2 periphera ls

■ Supports the extended partitioning capabilities of DOS 5.0 and

above

■ Supports both fixed and removable media devices with capaci-

ties above 1 GByte

■ Operating system suppor t available for DOS and Windows

Data Transfer Rates

■ Up to 10 MBytes/sec max imu m SCSI transfer rat e (Fast SCSI)

■ Up to 5.0 MBytes/sec sy nch ronous burst rate on the SCSI bus

■ Up to 3.0 MBytes/sec dat a rat e on the ISA bus

■ Up to 2.0 MBytes/sec asyn chro no us SCSI data rate

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Maximum Off-loading the Host CPU

■ Low SCSI processing overhead

■ Task sched uling and mess age-based communic ation

■ 16-bit host ISA bus data trans fer

■ 32-bit PIO trans fers with 80386 process ors and abov e

Advanced Fast SCSI-2 Implementation

■ Concurrent support of Fast SCSI, synchronous , and

asynchro no us dev ices

■ Single-ended output

■ Scatter/G ath er

■ Disconnect /Reco nnec t

■ Fully multitasking/multithreading

■ Uses the superior SCSI-2 (Alternative 2) external connector

and standard internal ribbon connector

■ Parity checking

Audio Module

■ CD, Line, and Microphone inputs

■ Line outputs

■ Speaker outputs

■ CD-ROM XA Audi o functio nalit y

■ 16-bit quality sound

■ MIDI connectivity

■ Windows Sound System compatibility

■ Sound Blaster compat ibilit y

■ Wavetable synthesis

■ Roland MPU-401 compatible MIDI port

■ Joystick interface

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■ 16-bit, 8-bit or compres sed 4-bits per sample, IMA Adpcm,

TrueSpeech Adpcm

■ Sampling rates: 8, 11, 22, and 44.1 KHz (selectable)

■ Stereo or mono modes (includ ing pseud o-st ereo and special

effects)

■ Onbo ard to ne co nt rol

■ Onboard stereo speaker amplifier

Adaptec Sof twa re

Like all Adaptec host adapter kits, the A MM-1570/1572 kit is

Install

shipped with the Adaptec EZ-SCSI

program, which allows you to automatically configure your operating environment for SCSI operation. From Adaptec EZ-SCSI you can run the Adaptec

Install

EZ-Audio

program to automatically configure your operating

environment for the audio capabilities of the AM M-1570/1572.

Avoid Static Electricity

The host adapter is sensitive to stat ic electri city; even a mild sho ck can destroy a component on the board. Keep the host adapter in its conductive wrapping until you are ready to install it in your system. Before handling the host adapter, alw ays ground yourself by touching an unpainted surface on the system chass is of your computer.

Number and Types of SCSI Devices

Each AMM-1570/1572 allows you to connect up to a total of seven internal and/or exter nal SCSI devices .

Types of Audio Equipment

You can connect a variety of au dio equipm ent to the AMM-1 570/ 1572, such as headphones, internal/ ext ernal speaker s, tape decks, CD players, joystick and MIDI connector, etc. Refer to Connecting Audio Equipment on page 3-17 for instruc ti on s on conn ect ing yo ur audio equipment.

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Types of Cables Required

Before you actually install the host adapter, be sure you have the correct cables for your particular instal latio n. The type of cables required depends on the type of devices you plan to connect to the SCSI bus: either external or internal. The type of connectors attached to the cables also depends on the configuratio n of your ins tallat io n.

Type of Connector on Host Adapter Type of SCSI Cable Type of Connector on SCSI Cable

Internal 50-pin SCSI ribbon cable Uns hrouded 50-pin header, com-

patible with unshielded Alternative 2 connector.

External 50-pin shielded cable Shielded 50-pin Alternative 2

connector.

Maximum Cable Lengths

When the SCSI bus contains a Fast SCSI host adapter, such as the AMM-1570/1572, and one or more Fast SCSI devices, the total length of all cables (internal and exter nal) con nect ed to the bus should not exceed 3 meters to ensure reliable operation. If no Fast SCSI devices are connected, the total length of all cables should not exceed 6 meters.

External SCSI Connector Mounting Bracket

If you are connecting external SCSI devices to the A MM-1570/1572, the external SCSI connector mounting bracket must be installed. This bracket allows you to connec t external SC SI devic es to the AMM-1570/1572. The moun ting bracket is available from Adaptec and is normally included with all AMM-1570/1572 kits. Refer to Installing the External SCSI Connector Mounti ng Brack et on page 3-8 for detailed instructions on installing the bracket.

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2

Configuring the AMM-1570/1572

About This Chapter

Read this chapter to find out

■ The import ance of termi natio n on the SCSI

bus and how to configure it on t he AMM-1570/1572

■ The importance of SCSI IDs on the SCSI bus

and how to configure it on the AMM-1570/ 1572

■ The default settings of the AMM-1570/1572

■ How to configure the jumper block settings

on the AMM-1570/1572

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Preparing Your Devices for Installation

Before physically installing the AMM-1570/1572 in your system, the AMM-1570/1572 must first be confi gured for oper atio n. Once it is installed in your system , it is difficult to change its configu rati on.

This chapter provides instruct io ns on how to configure the AMM-1570/1572. It discusses th e concepts of termin atio n an d SCSI IDs and explains the importance of properly terminating and assigning SCSI IDs to each SCSI device (including the host adapter) connected to the SCSI bus. In addition, this chapter describes in detail how to configure each of the jumper blocks on the AMM-1 570/1572.

Termination on the SCSI Bus

To prevent line noise from bouncing back through the SCSI bus, the first and last physical SCSI devic es on the SCSI bus must have a set of resistors calledterminators either installed or enabled. If the termi- nators on the first and last SCSI device are not installed or enabled, the signal may echo when it reaches the end of the cable; that echo often seems like a real signal to the SCSI device.

Identify which two SCSI devices will form the physical endpoints of your SCSI bus. These devices at the ends of the SCSI bus must be terminated. All other SCSI devices installed betw een the ends of the SCSI bus must have their terminators eith er removed or disabl ed.

Note:External SCSI devices are connected to an external

SCSI connector mounting bracket that is attached to the AMM-1570/1572. When attach ed, th e mou nti ng bracket becomes a com po nent of the board; it is not a device on the SCSI bus. See Install ing the External SCSI Connector Mounting Bra cket on page 3-8.

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Internal and External Devices

When both internal and external SCSI devices are connected to the host adapter, the last external device and the last internal device cabled to the host adapter is terminated. Since the host adapter is situated in the middle of the SCSI bus, and does not form a physical endpoint, host adapter termination is disabled.

Host Adapter

Termination

Disabled

Termination

Enabled

No

Termination

No

Termination

No

Termination

Enabled

Figure 2-1. Term ination With Internal and Ext ernal Devices

Internal Devices Only

When only internal devices are connected to the host adapter, the last internal device cabled to the host adapter is termi nated . Since the host adapter is situated at the end of the SCSI bus and forms one of the physical endpoints, host adapter terminat ion is enabled.

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Host Adapter

Termination

Enabled

No

Termination

Enabled

Figure 2-2. Termination With Internal Devices Only

External Devices Only

When only extern al devic es are connected to the host adapt er, the last external devic e cabled to the host adapter is term inated . Since the host adapter is situated at the end of the SCSI bus and forms one of the physical endpoints, host adapter terminat ion is enabled.

Host Adapter

Termination

Enabled

No

Termination

No

Termination

Enabled

Figure 2-3. Termination With External Devices Only

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Terminating SCSI Devices

Most SCSI devices use a jumper or a switch locat ed close to their SCSI connector(s) to control termination. On some SCSI devices, you must physically remove or install terminator resistor module(s). Refer to the manufacturer’s documentation to determine how to enable or disable termination on your particul ar SCSI device(s ).

Note: Since the AMM-1570/1572 always supplies termi-

nation power on the SCSI bus, terminat io n power sup plied by other SCSI devices should be disabled.

Terminating the AMM-1570/1572

Host adapter termination is determ ined by the types (inter nal and/or external) of SCSI devices connected to the AMM-1570/1572. The table below describes the possibl e configurati on s for host adapter termination.

Devices Connected To Host Adapter

Termination

Internal and external devices Disabled Internal devices only Enabled External devices on ly Enabled

The factory installed bus terminators on the AMM-1570/1572 are located below the SCSI internal connector and are enabled (Installed) by default. To disable term inati on on the host adapter, remove all three terminators.

Terminators

Figure 2-4. Ter minat ors

Host Adapter

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Note: When reinstalling the term inato rs, make sure to

maintain pin 1 orientati on as shown belo w.

Pin 1

Figure 2-5. Pin 1 Orientation on the Terminat ors

SCSI IDs on the SCSI Bus

Each SCSI device (including the host adapter) located on the SCSI bus must be set to a unique SCSI ID. The SCSI ID serves two purposes: it uniquely defines each SCSI device's address on the bus, and it determines the dev ice's prio r ity on the bus during the Arbitr atio n phase. The Arbitration phase determines which device owns the bus when two or more devices simult aneo usly request to use it.

When selecting the SCSI ID, consider the follo wing:

■ The default value for your host adapter is SCSI ID 7. Normally,

the host adapter should always be set to SCSI ID 7, which is the ID that has the highest priority o n the SCSI bus.

■ Standard 8-bit SCSI devices can be assigned IDs that range

from 0 to 7; SCSI ID 7 h as the highes t priorit y, and SCSI ID 0 has the lowest.

■ A device's SCSI ID should be changed only if it conflicts with

the SCSI ID of another device or anot her host adapter (ass um ing they are on the same SCSI bus).

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■ 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 hard disk drive.

■ SCSI IDs play no role in determining the physical order of SCSI

devices cabled to the host adapter.

■ If you are installing more than one SCSI host adapter, each

adapter implements a different SCSI bus, so SCSI IDs can be reused.

Setting the SCSI ID on the AMM-1570/1572

Changing the SCSI ID setting on the A MM - 1570/1572 is done by configuring jumper block J6 on the board. SCSI ID on page 2-16 lists the available settings for SCSI ID.

Setting the SCSI ID on Other SCSI Devices

The SCSI ID on most SCSI devices is typically set with jumpers or with switches on the SCSI device. Refer to the SCSI device documentation for information on changin g the SCSI ID for your particular SCSI device.

Default Settings

In most cases, you will never have to change the default settings of the AMM-1570/1572; however, if you need to change any of the settings, do it before you install the AMM-1570/1572 in your system. The following table lists the AMM-1570/1572 default settings and the jumper blocks used to configure the sett ings . For setti ngs and options of each jumper block, see Configuring the AMM-1570/1572 on page 2-10.

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Description Default Setting Jumper Block

Int 19h Reroute Int 19h J5 Fast SCSI Operation Disabled J5 Synchronous Negotiation Disabled J5 SCSI Disconnection Enabled J5 Floptical Drive Support Disabled J5 Extended Translation for Drives > 1GByte Disabled J5 Host Adapter SCSI ID 7 J6 Interrupt Channel (IR Q) 11 J6, J9

1

SCSI Parity Checking Enabled J6 Floppy Disk Controller (AMM-1572 only) Enabled J7 I/O Port Address 340h - 35Eh J9 BIOS Base Address DC000h - DFFFFh J9 Host Adapter BIOS Enabled J9 Sound Chip Base Address 220h J17 Host Adapter Terminators Installed –

1

Jumper blocks J6 and J9 are bo th used to determine the Interrupt Channel (IRQ). The appropriate pin

pairs on J6 and J9 must be configured to the same IRQ.

Note: Always refer to the documentation provided with

your system for instructions on adding and configuring adapter boards.

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Configuri ng the AM M-1 57 0/1 572

Configuring the AMM-1570/1572 involves installing or removing small plastic jumper connectors on the pins of jumper blocks located on the AMM-1570/1572.

Installing and Removing Jumper Connectors

Installing a jumper (On) means to install a small plastic jumper connector so that it covers both pins of the jumper pin pair. Removing the jumper connector or having it cover only one pin is the same as having no jumper installed (Off).

On Off Off

Jumper Block Locations

The AMM-1570/1572 has several configurable jumper blocks. The following figure shows the locat ion and design atio n of each jumper block.

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J5J6J7

J9

J17

J8

Figure 2-6. Jumper Block Locations

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Jumper Block J5

Jumper block J5 configures Int 19h, Fast SCSI, Synchronous Negotiation, SCSI Disconnect ion, Flo ptic al Drive Support , and Extended Trans lation for Drives > 1 GByt e. The default config urati on is

Extra Jumpers

DT BT M0 FS SN DN FL 1G

Reserved

Int 19h

Reserved

Fast SCSI

Synchronous Negotiation

Extended Translation

Floptical Drive Support

SCSI Disconnection

Int 19h

Pin pair BT determines whether Int 19h is rerouted. The default setting is reroute Int 19h. The available settings are

= Reroute Int 19h *

BT

* = Default

= Do not reroute Int 19h

BT

To allow for booti ng capability from a SCSI drive, the ho st adap ter BIOS allows you to reroute Int 19h during system bootup. If Int 19h is not rerouted, Int 13h performs system boot up and allow s bootup from a non-SCSI device (e.g., IDE drive).

Note: In the default setting the host adapter BIOS per-

forms the booting func tion.

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Fast SCSI Operation

Pin pair FS determines whether the host adapter initiates support for Fast SCSI Operation. The available settings are

= Fast SCSI Operation Disabled * = Fast SCSI Operation Enabled

FS FS * = Default

Fast SCSI devices, including the AMM-1570/1572, are capable of transferring data to and from the SCSI bus at speeds ranging from 5 to 10 MBytes/sec.

Fast SCSI Operation and Synchronous Negotiation are used in conjunction to determi ne request for data trans fer rates:

■ If both Fast SCSI Operatio n an d Synchro no us N egot iati on is

enabled, the host adapter initiates a request for 10 MByte/sec data transfer.

■ If Fast SCSI Operation is enabled and Synchronous Negotia-

tion is disabled, the Fast SCSI drive initiates a request for 10 MByte/sec d ata t ransfer.

■ If Fast SCSI Operation is disabled and Synchronous Negotia-

tion is enabled, the host adapter initiates a request for 5 MByte/sec data transfer.

■ If both Fast SCSI Operatio n an d Synchro no us N egotiati on

are disabled, the Fast SCSI device initiates a request for 5 MByte/sec data transfer.

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Synchronous Negotiation

Pin pair SN allows you to enable or disable whether the host adapter initiates Sync hronous Negotiation with a SCSI device. The available settings are

= Synchronous Negotiation EnabledSN= Synchronous Negotiation Disabled *

SN * = Default

Before data is transferred across the bus, the sending (initiating) and receiving (target) devices negotiate and agree on how long each piece of data is, and how many pieces are sent at a time—t hat is , they agree on how fast to talk.

SCSI devices that suppor t Synchronous Nego tiat ion data trans fer can maintain a much higher conversation speed than devices that do not support it.

When enabled, the host adapter initiat es Synch ronous Negot iat ion with the SCSI device. When disabled, the host adapter does not initiate Synchro nous Nego t iatio n w ith the SCSI dev ice. The host adapter, however, always responds to Synchronous Negotiation initiated from the SCSI device.

If neither the host adapter nor the SCSI peripheral negotiate for synchronous data transfers, all data transfers will be asynchronous.

Note: Some older SCSI-1 devices may have trouble han-

dling Synchro no us Nego t iatio n, whic h may result in erratic behav ior or a hang condition. For these devices, leave Synchronous Negotiat ion disabled.

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SCSI Disconnection

Pin pair DN allows you to enable or disable SCSI Disconnection. The default setting is enabled. The available settings are

= SCSI Disconnection Enabled *DN= SCSI Disconnection Disabled

DN

* = Default

SCSI Disconnection (so m etim es referred to as Disconn ect /Reco nnect) determines w heth er the host ad apter allo ws a SCSI device to disconnect from the SCSI bus while the devic e complet es a lengthy operation. If disconnection is allowed, the host adapter can perform other operations on the SCSI bus while the devices are temporarily disconnected.

Note: A SCSI device may choose not to disconnect, even

if allowed to by the host adapter (this is usually configurable on the SCSI device).

In general, disconnect should be allowed for the mos t efficient SCSI bus utilization and highest overall sys tem perfor mance. If only one SCSI device is attached to the SCSI host adapter, disconnects are not required for efficient SCSI bus utilization since only one SCSI device is using the SCSI bus. A slight performance increase may be realized if disconnect is not allowed in this case, due to the decreased SCSI overhead. In multidevice environments, disconnect should normally be allowed to take advantage o f the Disconnect /Reconnect feature.

Floptical Drive Support

Pin pair FL allows you to enable or disable Floptical Drive Suppor t. Enable this option if you are connecting a Flopt ical drive to the SCSI bus. The available settings are

= Floptical Support Enabled = Floptical Support Disabled *

FL FL

* = Default

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Extended Translation for Drive > 1GByte

This option allows you to enable or disable e xtended translation for a SCSI hard disk(s) with a capacity greater than 1 GByte. Appendix D, Disk Drives Over 1 GByte discusses the extended translation feature in detail.

= Extended Translation Disabled * = Extended Translation Enabled

1G 1G

* = Default

If this option is enabled, the following translatio n sc hemes are used:

■ SCSI hard disks ≤ 1GByte use a translation scheme of 64 heads,

32 sectors per track.

■ SCSI hard disks > 1 GByte use a translation scheme of 255

heads, 63 sectors per track.

Caution: Back-up the data on your large capacity drive

before changing the Extended Tr ansl ation settin g. All data may be lost!

Jumper Block J6

Jumper block J6 configures SCSI ID, Interrupt Channel (IRQ), and SCSI Parity Checking. The default configuration is

Extra Jumpers

SDSDSD IC IC DC DC SP

SCSI ID

Interrupt Channel (IRQ)

Reserved

SCSI Parity

Checking

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SCSI ID

Pin pairs SD, SD, and SD all ow you to configure the host adapter SCSI ID. The available settings are

SD

SD SD

= ID 7 *

SD

= ID 5

SD

= ID 3

SD

= ID 1

SD

= ID 6

SD SD

= ID 4

SD SD

= ID 2

SD SD

= ID 0

SD SD

* = Default

Each SCSI device (including the host adapter) located on the SCSI bus must be set to a unique SCSI ID. Refer to SCSI IDs on the SCSI Bus on page 2-7 for additional informatio n on SCSI ID.

Interrupt Channel (IRQ)

Pin pairs IC and IC allow you to configure an IRQ for the host adapter. Each AMM-1570/1572 and expansion board installed in your system must be assigned a unique IRQ. The IRQ channel selected here must match the IRQ chann el select ed usin g pin pairs I2, I1, I0, and I9 on Jumper Block J9. The available settings are

= IRQ 9

IC IC

= IRQ 11 *

IC IC

= IRQ 10

IC IC

= IRQ 12

IC IC

* = Default

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SCSI Parity Checking

Pin pair SP enables or disables SCSI Parity Checking. The available settings are

= SCSI Parity Checking Enabled *

SP

= SCSI Parity Checking Disabled

SP

* = Default

The host adapter always ch ecks parity w hen reading from the SCSI bus to verify the data from your SCSI devices. If any attached SCSI device does not support SCSI parity, then SCSI Parity Ch eckin g on the host adapter should be disabled. Most devi ces today, however, do support SCSI parity .

Jumper Block J7 (AMM-1572 only)

Jumper block J7 enables or disables the floppy disk controller. If your floppy diskette drives are already running under another controller, disable the onbo ard floppy controller on the A MM -15 72. To use the onboard floppy controller, leave it enabled on the AMM-1572 and then disable your existin g floppy co ntro ller. The available settings are

= Floppy Enabled (Default)

= Floppy Disabled

Jumper Block J8

Jumper block J8 is reserved for Adaptec use.

Jumper Block J9

Jumper block J9 configures the IRQ channel and I/O Port and BIOS Base Addres s. The defaul t configuration is:

Extra Jumper

I2 I1 I0 I9 AL J6 J4 BE

IRQ Channel

I/O Port Address

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BIOS Enable

BIOS Base Address

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Interrupt Channel (IRQ)

Pin pairs I2, I1, I0, and I9 allow you to configure the IRQ for the host adapter. Each AMM-1570/1572 and expansion board installed in your system must be assigned a unique IRQ. The IRQ channel selected here must match the IRQ chann el select ed usin g pin pairs IC and IC on jumper block J6. The availabl e settings are

I2 I1 I0

= IRQ 12

I9

= IRQ 10

I9

I2 I1 I0

= IRQ 11 *

I9

= IRQ 9

I9

* = Default

Note: IRQ 9 is not recommended with Windows 3.x.

I/O Port Address

Pin pair AL configures the I/O Port Address range of the host adapter. Each AMM-1570/1572 and expansion board installed in your system must be assigned a unique I/O Port Address range. The available settings are

= I/O Port Address 140h-15EhAL= I/O Port Address 340h-35Eh *

AL * = Default

Note: The host adapter BIOS supports booting only for

the default port address of 340h-35Eh.

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)

BIOS Base Address

Pin pairs J6 and J4 configure the host adapter BIOS Base Address range. Each AMM-1570/1572 and expansion board installed in your system must be assigned a unique BIOS Base Address range. The available settings are

= C8000h-

CBFFFh

J6 J4

= D8000h-

DBFFFh

J6 J4

= CC000h-

CFFFFh

= DC000h-

DFFFFh

*

* = Default

Host Adapter BIOS

Pin pair BE allows you to enable or disable the Host Adapter BIOS. The BIOS must be enabled in order to boot from a SCSI fixed disk drive attached to the host adapter, and to display BIOS messages during system bootup. The availabl e settings are

= Host Adapter BIOS Enabled * = Host Adapter BIOS Disabled

BE BE

* = Default

Jumper Block J17

Jumper block J17 configures the Sound Chip Base Address. The available settings are

220h (Default

240h Invalid

❒

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Installing the AMM-1570/1572

About This Chapter

Read this chapter to find out

■ The instruct io ns an experi enced user can

use to quickly install th e AM M -1570/1572, connect SCSI devices , and connec t audio equipment

■ The instruct io ns a user who is new to SCSI,

or has limited experienc e, can use to install the host adapter, connect SCSI devices, and connect audio equipm ent

■ An overview of the Adaptec software avail-

able to configure your operating environment for SCSI and audio operation

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3

Installati on Ove rvi ew

This chapter provides instructions that guide you through installing the host adapter into the computer, attaching the external SCSI connector mounting bracket for external SCSI devices, cabling devices to the SCSI bus, and connecting audio equipment.

For experienced users who are already familiar with SCSI and SCSI installation, refer to the following section, Quick Installatio n, for instructions that allow you to get your host adapter up and running quickly.

If you are new to SCSI peripherals, or if you have limited experience installing opt ion boards in your computer, refer t o the more comp rehensive instructions and illustrations found in Detailed Instal la tio n on page 3-5.

Quick Installation

The following sections are intended to help experienced users quickly install the AMM-1570/1572 into the computer.

If you are new to computer peripheral installation or would like more information, refer to the more comprehensive instructions and illustration s foun d in D etai led Instal la tio n on page 3-5.

Note: Before you physically install the board, verify that

SCSI termination, SCSI ID setting , and jumper blo ck configuration is properly configured on the AMM-1570/1572. Chapt er 2, Configuring the AMM-1570/1572, d esc ribes term inatio n, SCSI ID, and configuration in detail.

WARNING: Before removing the chassis cover or

attempting any motherboard modifications, ground yourself by touching an unpainted surface on your computer chassis, then turn to the system and external equipment .

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OFF and disconnect power

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To install the AMM-1570/1572 in your computer:

1 Remove the chassis cover to expo se the expansio n slot s and

external acc ess cover s.

2 Install and secure the host adapter in an available expansion

slot.

3 To connect internal SCSI devices, use a 50-pin SCSI ribbon cable

to connect the first SCSI device to the internal connector on the host adapter. Make sure to align Pin 1 of the cable with Pin 1 of the connectors on the host adapter and internal SCSI device.

4 To connect additional internal SCSI devices, obtain a 50-pin

SCSI ribbon cable with enough connectors to accommodate all of your internal SCSI devices .

5 If you are connecting external SCSI devices , ins tall and sec ure

the external SCSI connector mounting bracket (available from Adaptec) into an available slot cover opening next to the board.

6 Connect the ribbon cable of the external SCSI connector mount-

ing bracket to the external SCSI connector on the host adapter.

7 To connect the first external SCSI device, use a 50-pin shielded

cable to connect the device to the external SCSI connect or mounting bracket.

8 To connect subsequent external SCSI devices, obtain additional

50-pin shielded cables to chain the devices toget her.

9 If you are using the floppy controller on the AMM-1572, use a

34-pin floppy ribbon cable and connect one end to the floppy connector on the host adapter; connect the other end to the connector on the first floppy driv e (drive A).

10 To connect a second floppy drive, plug the middle connector of

the floppy ribbon cable to the connector on the second floppy drive (drive B).

11 To connect audio devices , plug your devices int o the appropri-

ate jacks on the mounting bracket of the AMM-1570/1572. Any audio equipment , with the exceptio n of the joyst ick and MIDI connector, connected to the AMM-1570/1572 must be equipped with a 1/8-inch plug (miniphone plug).

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12 Install Adaptec software to configure your operating environ-

ment for SCSI and audio operatio n. To complet ely install all the softw are necessary to operate the

AMM-1570/1572, run the Adapt ec EZ-SCSI progr am; a series of screens guide you through SCSI and audio configuration. See Installing Adaptec Software on page 3-19, for information on software available for the AMM-1570/1572.

Detailed Ins tall atio n

This section is intended prim arily for user s who are new to SCSI peripherals, or have limited experience in installing an option board in their computer. Experienced users may want to refer to Quick Installation on page 3-3.

The comprehensive instructions in this sectio n guide yo u through installing the host adapter, cabling peripherals, and connecting audio equipment.

Note: Before physically installing the board, verify that

SCSI termination, SCSI ID setting, and jumper block configuration are properly configured on the AMM-1570/

1572. Once the AMM-1570/1572 is installed in your computer it is very difficult to change these settings. Chapter 2 ,Configuring the AMM-1570/1572, describes termination, SCSI ID, and configuration in detail.

To assist you with installation, Figure 3-1 shows the location of all the connectors on the host adapter.

LED Connector

Floppy Drive

Connector

(AMM-1572 Only)

Internal

SCSI

Connector

Figure 3-1. Connectors on the Host Adapter

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External SCSI Connector

CD Audio Input Connector

Headphones/ Speakers

Line Out Line In Microphone

Joystick/ MIDI Port

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Installing the Host Adapter

To install the host adapter in your computer, the chassis cover must be removed and the motherboard expo sed . A lways refer to your system document atio n for instructio ns on removin g the chass is co ver and adding option boards, such as the AMM-1570/1572.

WARNING: Ground yourself by touching an unpainted

surface on your computer chas sis, th en turn disconnect power to the system and external equipment before removing the chassis cover or attem pti ng any motherboard mod ificat ion s.

To install the AMM-1570/1572 in your computer:

1 Remove the cover of your computer to expos e the expansi on

bus slots on the motherboard.

2 Locate an unused expansion bus slot in your system and

remove the correspondin g slot cover.

OFF and

Unused

Expansion

Bus Slot

Figure 3-2. Unused Expansion Bus Slot

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3 Carefully remove the AMM-1570/1572 fro m the antistatic bag.

Place it on top of the bag if you need to set it down.

4 Align and insert the host adapter in the expansion slot. 5 Secure the host adapter in your system. Make sure the host

adapter is fully seated in its slot.

Figure 3-3. Installing the Host Adapter

Note: Do not replace the chassis cover or reconnec t the

power yet!

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Installing the External SCSI Connector Mounting Bracket

If you are connecting external SCSI devices to the A MM -1570/1572, you will need to install the external SCSI co nnec tor moun tin g bracket. The mounting brack et is available from Adaptec and is normally included with al l A MM-1570/1572 kits.

To install the external SCSI connect or mount ing bracket :

1 Locate an unused expansion bus slot (preferably next to the

AMM-1570/1572) in your system and remove the corresponding slot cover.

Note: The bracket occupies the slot cover opening

only and is not actually installed into the expansion slot.

2 Align and insert the bracket in the expansion slot cover

opening.

AMM-1570/1572

Figure 3-4. Installing the External Mounting Bracket

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3 Connect the ribbon cable of the bracket to the external SCSI

connector on the AMM-1570/157 2.

AMM-1570/1572

Pin 1

Figure 3-5. Connecting Bracket Ribbon Cable to the Host Adapter

4 Secure the bracket in your system.

Cabling the Host Adapter

The AMM-1570/1572 h as two connectors for connect ing SCSI devices: o ne for connec tin g inter nal SCSI devices , and one for connecting external SCSI devices. In addition, the AMM-1572 has a connector that allows you to connect up to two floppy dis k drives.

Note: Only single-en ded SCSI devices are supported by

the AMM-1570/1572. Diff erentia l SCSI devices m ay be damaged if connected to the host adapter bus. Most SCSI devices currently produc ed are single -ended SCSI devices. Consult your SCSI device user document atio n.

Connecting Internal SCSI Devices

Internal SCSI devices use a 50-pin flat SC SI ribbon cable w ith a 50pin header internal connector. The cable has connectors at each end and additional connector s attached in the midd le. One end of the

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cable is attached to the internal 50-pin SCSI connector on the host adapter, and the internal SCSI devices are attached to the remaining connector s. Up to seven inter na l SC S I devic es can be con nect ed to the 50-pin internal SCSI connector.

Note: Refer to the SCSI device docum entat ion for

instructio ns on mount ing int ernal SC SI devic es ins ide your computer chassis .

To connect internal SCSI devices:

1 Connect one end of the 50-pin SCSI ribbon cable to the 50-pin

internal SCSI connector on the host adapter.

Note:When cabling the 50-pin internal SCSI ribbon

cable to both the host adapter and internal SCSI device(s), make sure that Pin 1 orientation 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. Pin 1 of the host adapter or SCSI device connector is usually designated by an arrow or delta symbol (▲) on the connector.

Colored

Stripe

50-pin SCSI

Ribbon Cable

Pin 1

Internal SCSI

Connector

Figure 3-6. 50-pin SCSI Ribbon Cable to Host Adapter

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2 Connect the other end of the 50-pin SCSI ribbon cable to the

SCSI connector on the internal SCSI d evice.

Pin 1

Colored Stripe

Internal SCSI

Device

Figure 3-7. 50-pin SCSI Ribbon Cable to Internal SCSI Device

3 To connect a second internal SCSI device, plug the middle

connector of the SCSI ribbon cable to the SCSI connector on the second internal SCSI device.

Pin 1

Colored Stripe

To Host

2nd Internal SCSI

Adapter

Device

To 1st Internal

SCSI Device

Figure 3-8. Connecting a Second Internal SCS I Device

4 To connect three or more internal SCSI devices to a SCSI bus,

obtain a 50-pin SCSI ribbon cable with enough connectors to accommodate all of your internal SCSI devices.

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Connecting Extern al SCSI Devices

To install external SCSI devices, make sure the external SCSI connector mounting bracket is installed as explained on page 3-8.

External devices are usually daisy-chained to the host adapter. This means that a simple two- ended cable runs from the ho st adapt er to the connector on the first external device. A second connector on the back of the external device allows another cable to connec t it with the second device in the ch ain . Up to s even external SCSI devi ces can be connected to the external connec tor.

External SC SI devic es use a 50-pin shielded cable with an external connector. External cable connect o rs are keyed and can only be plugged-in one way; Pin 1 orientation is automatic.

To connect external SCSI devices:

1 Connect one end of the external SCSI cable to the external SCSI

connector mounting bracket.

External SCSI Connector

50-pin External SCSI Cable

Figure 3-9. External Cable to Host Adapter

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2 Connect the other end of the ext ernal cable to either one of the

SCSI connectors on the external SCSI device.

50-pin External

SCSI Cable

External SCSI Device

Figure 3-10. External Cable to External SCSI Device

3 To connect subsequent external SCSI devices, obtain additional

external cables and chain each device to the previous device until all external SCSI devices have been connected.

50-pin External

SCSI Cables

Figure 3-11. Connecting Multiple External SCSI Devices

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Connecting Floppy Drives (AMM-1572 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 disk drives can be connected to the host adapter.

Note: The AMM-1572 supports only floppy primary

address 3F0h - 3F7h. The IRQ channel is hard-wired for channel 6 and the DMA channel is hard-wired for channel 2.

To connect floppy disk drives:

1 Connect one end of the 34-pin floppy ribbon cable to the

floppy connecto r on the host adapter.

Note: When cabling the 34-pin floppy ribbon cable

to both the host adap ter and flo ppy disk drive(s), make sure that Pin 1 orientation is maintained. Pin 1 of the floppy ribbon cable is designated by a colored stripe on one edge of the ribbon cable. Pin 1 of the host adapter or floppy drive connector is usually designated by an arrow or delta symbol (▲) on the connector.

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Stripe

Pin 1

Floppy Ribbon

Floppy Connector

Figure 3-12. 34-pin Floppy Cable to Host Adapter

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2 Connect the other end of the 34-pin floppy ribbon cable to the

connector on the first floppy driv e (drive A).

Pin 1

Colored Stripe

Floppy

Diskette Drive

Figure 3-13. 34-pin Floppy Cable to First Floppy Drive

3 To connect a second floppy drive, plug the middle connector of

the floppy ribbon cable to the connector on the second floppy drive (drive B).

2nd Floppy Diskette

Drive

Figure 3-14. Connecting a Second Floppy Drive

Pin 1

Colored Stripe

To Host Adapter

To 1st Floppy

Drive

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Connecting the SCSI Bus Activity LED

Most computer s have a disk drive activit y light , usually an LED (Light Emitting Diode ) on the front panel. If you connect your system's LED cable to the host adapter, the LED will light to indicate SCSI bus activity.

Note: If you connect your computer's LED to the host

adapter, the LED no longer indicates non-SCSI disk activity. So you may not want to use this feature if you are running non-SCSI disk drives.

To connect the SCSI bus LED connector:

1 Refer to your system's documentation to locate and unplug the

LED cable from the connector on the system board.

2 Connect the LED cable to the SCSI activity LED connector (J1)

on the host adapt er.

LED Cable

Pin 1

LED Connector

Figure 3-15. SCSI LED Connector

Note: On syst ems with a two pos itio n LE D cable,

connect th e LED cable to pins 1 (+) and 2 (-) of the LED connector.

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Connecting Audio Equipment

You can connect a variety of au dio equipm ent to the AMM-1 570/ 1572, such as headphones, po wered or non powered external sp e akers, tape decks, CD players, joystick and MIDI connector, etc.

With the exception of the joystick and MIDI co nnecto r, any audio equipment connected to the AMM-1570/1572 must be equipped with a 1/8-inch plug (miniphone) to plug into the audio jacks on the AMM-1570/1572. The following figure shows some of the audio equipment you can use and where to plug the equipment into the jacks on the moun tin g brack et of the A MM-1570/1572.

Headphones/ Speakers

Line Out Line In Microphone

MIC IN OUT SPKR

Joystick/ MIDI Port

Figure 3-16. Connecting Audio Equip ment to the Host Adapter

Speaker (SPKR) Jack

The SPKR jack allows you to connect headphon es or external speakers (powered or nonpowered speakers).

Line-out (OUT) Jack

The OUT jack allows you to connect audio equipment for audio output from the AMM-1570/1572. Typical equipment inc ludes stereo receivers, amplifiers, amplified speaker systems, and tape decks. Use an RCA-to-stereo miniphone cable to plug your equipment into

OUT jack.

the

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Line-in (IN) Jack

The IN jack allows you to connect audio equipm ent for audio input to the AMM-1570/1572. Typical equipment includes stereo receivers, amplifiers, tape decks, and CD players . Use an RCA-to -stereo miniphone cable to plug your equipment to the

IN jack.

Note: Audio input from a CD-ROM drive to the

AMM-1570/1572 is accomplished by connecting a separate audio cable (provided by the CD-ROM drive manufacturer) from the Line-level Output (Audio Out) connector on the drive to the CD Audio Input connector (J4) on the AMM-1570/1572.

Since the Line-level Output is a nonstandard connector and can vary depending on the CD-ROM manufacturer, the type of audio cable used can also vary. Refer to the CD-ROM drive documentation for information on connecting your drive to the CD-Audio Input on sound cards such as the AMM-1570/1572. To have a customized cable made, pinouts for connector J4 on the AMM-1570/1572 are described in Appendix A, Specifica- tions.

Microphone (MIC) Jack

The MIC jack allows you to connect any standard microphone with a miniphone plug.

Joystick/MIDI Port

The Joystick/MIDI port on the AMM-1570/1572 is identical to that on a standard PC game control adapter or game port. Any standard PC joystick (i.e., an analog joystick with a 15-pin D-subconnector) can be connected to the Joystick/ MIDI po rt .

The Joystick/MIDI port also provides access to the Musical Instrument Digital Interfac e (MIDI). MIDI is a serial bus, digital interface that allows you to connect electronic musical devices, such as keyboards and synthesizers to your com put er.

In order to use the A MM-1570/1572 for MIDI recording, you must first obtain a MIDI adapter and MIDI software. The MIDI adapter plugs into the Joystick/MIDI port. Ty p ically the MIDI adapter also includes a separate joystic k port that allows yo u to have both MID I and joystick capabilities at the same time. For more informat ion on

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MIDI recording, refer to the documentation that accompanies your MIDI adapter and software.

Installing Adaptec Software

Two Adaptec software packag es are available to configure your operating environmen t for SCSI and audio oper ation: Adaptec EZ-SCSI and Adaptec EZ-Aud io. Both packages are available from Adaptec and are normally included w ith all AMM-1570/1572 kits.

Adaptec EZ-SCSI

If you are running MS-DOS or MS-DOS with Windows, Adaptec EZ-SCSI makes driver installation a simple task. Adaptec EZ-SCSI is a menu-driven software package that automatically configures your operating environmen t for SCSI operatio n. Refer to the EZ-SC SI User’s Guide for complete information .

To run EZ-SCSI, simply inser t the EZ-SCSI ins tallat ion disket t e into the floppy drive and type Install at the appropriat e DO S prompt . Towards the end of EZ-SCSI installation, you are asked if you would like EZ-SCSI to install Adaptec EZ-Audio. To install Adaptec EZ-Audio, you will need the Ad aptec EZ -Aud io inst allatio n diskette.

Adaptec EZ-Audio

Adaptec EZ-Audio is a menu-driven soft ware package that upgrades your system to have audio cap abiliti es; it automatically installs the audio softw are and configures your op eratin g environment.

To run EZ-Audio, select Yes at the end of EZ-SCSI installation when prompted, or insert the EZ- Au dio installatio n dis ket te int o the floppy drive and t ype Install at the appropriate DOS prompt. Refer to the EZ-Audio User’s Guide for detailed instruct io ns .

Note:For first time installation, we recommend that you

run Adaptec EZ-Audio from the Adaptec EZ-SCSI program. Adaptec EZ-SCSI allows you to completely install all the software necessary to operate the AMM-1570/1572.

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Before Restarting Your System

Before restarting your system and configuring your host adapter, make sure the following is complete d:

■ The SCSI bus is properly termin ated.

■ Each SCSI device on the SCSI bus is set to a unique SCSI ID

(0-7).

■ The host adapter is firmly seated and secured in the expansion

bus sl ot.

■ Internal SCSI devices are connected to the host adapter with a

50-pin SCSI ribbon cable and that proper Pin 1 orientation is maintained.

■ External SCSI devices are cabled to the host adapter with

50-pin shielded cables.

■ If using the onbo ard floppy co ntro ller on the A MM -1572, the

floppy diskette driv e is con nect ed to the host adapter wi th th e 34-pin floppy ribbon cable and that proper Pin 1 orientation is maintained.

■ All system and power cables are properly connected.

Reassemble the System

Refer to your system and SCSI device docum ent atio n to replace the system cover and connec t all system and SCSI device power cabl es. Your com puter and host adapter are now ready to use.

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4

Troubleshooting

About This Chapter

Read this chapter to find out

■ How to use the troubleshooting checklist to

solve some of the more common problems you may encounter

■ How to fix specific operating problems

■ The ASPI manager error messages and the

condition s in whi ch th ey occ ur

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SCSI Troubleshooting Checklist

The AMM-1570/1572 host adapters have been tested for compatibility with popular SCSI devices. Most problems that might occur during installation can be traced to errors in preparing devices on the SCSI bus.

The followin g suggesti on s shoul d help you to solve an y problems that you may encounter. If you need additional help in getting the host adapter running properly, informatio n o n contac tin g Adaptec Technical Suppor t is includ ed on page ii.

If a problem occurs during installation, check these items first:

■ Be sure all cables are properly connected. Check both power

and SCSI interface cables. See Detailed Installati on on page 3-5. Connect internal peripherals to your computer 's pow er sup-

ply; plug external peripheral power cables in to a grounded line power outlet. Fo llo w the inst ruct ions in the hardw are documentation.

■ Be sure the host adapter is firmly seat ed and secured in th e

expansion slot it is installed in.

■ Check SCSI bus termination. The devices at the ends of the bus

must be ter minated. See Termination on the SCSI Bus on page 2-3.

■ Be sure the SCSI devices and host adapt er are each set to a

unique SCSI ID (0-7). See SCSI IDs on the SCSI Bus on page 2-7.

■ If you have installed more than one SCSI host adapter make

sure that only one host adapter BIOS is enabled at a time.

If your problem is still not resolved, continue with the next section.

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Operating Problems

The system will not boot from the standard floppy drive or hard drive after initial hardware install ation.

■ The LED on the host adapter should light up briefly when you

power up the system. If the host adapter detects an internal failure, a message is displayed on the screen. Return the board to the place where you bought it for repair o r replacement.

■ If both the host adapter an d SCSI drive LEDs always remain

on, the pin 1 orientation of the SCSI cable is probably reversed between the host adapter and the drive. Make sure that pin 1 orientation is maint ained thro ugho ut the bus as explained in Connecting Internal SCSI Devic es on page 3-9.

■ If the host adapter BIOS message is not displayed on the

screen, the system does not recognize the BIO S. – Check for BIOS and I/O port address confl icts between the

host adapter and other option boards.

– Try a different BIOS address. Refer to Jumper Block J9 on

page 2-17.

– Make sure the host adapter BIOS is enabled. The jumper on

pin pair BE of jumper block J9 must be installed (factory default).

■ If you see the messag e Host Adapter Not Found At Port 340h,

check the I/O port address jumper setting. Ref er to Jumper Block J9 on page 2-17.

■ Make sure that the floppy disk drive is cabled correct ly.

■ Make sure only one floppy controller is enabled in the system.

The system does not boot from the SCSI hard disk drive, and the Adaptec logo does not appear on the screen during system bootup.

This problem indicates that the host adapter BIOS is not running.

■ Make sure the BIOS is enabled and that a jumper connector is

installed on pin pair BE of jumper bloc k J9.

■ Make sure that the host adapter is firmly seated in the expan-

sion bus slot.

■ Make sure that there is no SCSI ID addressing conflict.

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■ If your system has only SCSI disk dri ves , make sure your com-

setup

puter’s CMOS

is set to No Drives Installed , as is required

for SCSI host adapters.

■ If necessary, back up all data on the desired boot hard disk and

perform a high-level or low-level format .

■ If your system is running under DOS, be sure that the intended

boot disk has an active DOS partition and a DO S format.

■ If your system is attempt ing to boo t from the SCSI hard drive,

make sure the SCSI ID of the hard drive you want to boot from is set to 0.

■ Make sure that SCSI parity is consistently enabled or disabled

on all devices on the SCSI bus.

■ Make sure that SCSI terminatio n is properly set on the host

adapter and SCSI devices. (See Termination on the SC SI Bus on page 2-3.)

The

aspi2dos.sys

not boot from the SCSI hard disk drive, and the appear on the screen.

ASPI manager is installed; however, the system will

aspi2dos

logo does not

■ Make sure

aspi2dos.sys

is located in the root directory of the

boot drive.

■ Make sure the

config.sys

file contains the following entry:

device=c:\...\aspi2dos.sys /d

The system is having difficulties using a SCSI drive as driveD and a standard hard disk as drive

■ Make sure hard disk 1 (D) is set to Not Installed or No Drive

Installed with your CM OS

■ Make sure the SCSI drive used as drive D is set to SCSI ID 0.

C

.

setup

program.

Check your drive manual for information on setting the SCSI ID for that device.

■ Make sure SCSI parity is consistently enabled or disabled on

all devices on the SCSI bus.

■ Make sure SCSI termination is properly set on the host adapter

and SCSI devices.

■ If your system is running under DOS, make sure the disk has a

DOS partition.

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The system is having difficulties using a SCSI drive as driveD and another SCSI drive as drive

■ Make sure that both standard hard disks are set to Not Installed

or No Drive Instal led with your CMOS

■ Make sure the SCSI drive used as drive D is set to SCSI ID 1.

C.

setup

program.

Check your drive manual for information on setting the SCSI ID for that device.

■ Make sure SCSI parity is consistently enabled or disabled on

all devices on the SCSI bus.

■ Make sure SCSI termination is properly set on the host adapter

and SCSI devices.

■ If your system is running under DO S, make sure that the dis k

has a DOS partition.

The system works erratically; it hangs, or the host adapter cannot locate the drives.

■ Make sure SCSI parity is consistently enabled or disabled on

all devices on the SCSI bus.

■ Make sure SCSI termination is set correctly on the host adapter

and the peripherals.

■ Check cable length and integr ity. Total cable length should be

no longer than 6 meters for the entire SCSI bus. If Fast SCSI Operation is enabled, total cable length should be no longer than 3 meters for the entire SCSI bus.

Playing audio CDs from your CD-ROM drive works fine in DOS, but when trying to play audio CDs while i n Windows, you get a message similar to

NO CD ROM FOUND....

■ The [MCI] CD Audio driver is needed in order to play audio

CDs while in Windows. Use the Drivers option in Control Panel to install the [MCI] CD Audio driver.

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While playing audio CDs from your CD-ROM drive, you can not hear any sound while plugged into the SPKR jack on th e AMM- 1570/1572, but if you plug into the audio/headphone jack on the CD-ROM drive it works fine.

■ A separate audio cable provided by the CD-ROM manufa cturer

must be connected from the Line-level Output (Audio Out) connector on the CD-ROM drive to the CD Audio Input connector (J4) on the AMM-1570/1572. Refer to Line-in (IN) Jack on page 3-18.

ASPI Manager Error Messages

This section list error messages and the condi tio ns whic h they m ay be displayed.

aspi2dos.sys Error Messages

Failed to initialize HA

Check the host adapter and reinstall if necessary. Check jumpers and cables.

aspi2dos.sys Installation Failed

Check the content s of your device drivers (incl udin g all memory m anag ers ) until installs succes s fu lly; then relo ad the other dr iver s one at a time to find the driver that is causing the problem. Try installing

aspi2dos.sys

on the first line of your

config.sys

file. Remove all unnecessary

aspi2dos.sys

config.sys

. file.

Illegal or no Hex Digit Found on command line option Illegal Digit Found on command line /

Check the syntax of the statements in your

x

option

config.sys

file. There may

be an invalid digit on the command line.

aspidisk.sys Error Messages

aspidisk.sys is NOT installed

Check the contents of your device drivers until

aspidisk.sys

drivers one at a time to find the driver that is causing the problem. Be sure that the disk device you w an t to control with

not under the control of the host adapter BIOS. (If enabled, the host adapter BIOS cont rols the SCSI drives installed at SCSI IDs 0 and 1,

aspidisk.sys

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config.sys

file. Remove all unnecessary

installs successfully; then reload the

aspidisk.sys

is

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Unable to open ASPI manager !

No ASPI manager is l oaded. Be sur e that

aspidisk.sys

in the

config.sys

file. Be sure that the ASPI drivers are in

aspi2dos.sys

is listed before

the root directory of the boot drive. You can also put the drivers in a subdirectory, as long as you specify a correct path in the

config.sys

file. For example, if you put the drivers in a subdirectory called

c:\drivers

, then you need the following line in your

config.sys

file:

device=c:\drivers\ aspi2dos.sys

Invalid DOS version. DOS must be version 3.21 and above.

aspidisk.sys

requires MS®-DOS or PC-DOS 3.21 or higher. It does

not load if it detects an earlier version of DO S .

Other Error Messages

Host adapter at port address

xxx = the port address. This message indicates that there is no host adapter at that port address, that there is an address conflict, or that the host adapter is defective. Reinstall the host adapter. Check cables and jumpers. Check for I/O address conflicts. Confi rm that the contents of the motherboard CMOS are set correctly with the program.

xxx

failed diagnostics.

Setup

Failed scanning for SCSI devices.

The driver failed when scanning the SCSI bus for SCSI devices. Be sure that the SCSI drive’s jumpers for SCSI ID and LUN are set correctly. Be sure that all SCSI devices are powered up. Check SCSI bus termination, SCSI parity, and cabling.

Get device type failed

Check with your dri ve manufacturer to ensure that you have the latest firmware for your SCSI drive.

Get number of heads failed Read SCSI drive capacity failed

If the driver is unable to determine capacity for drives 0 through 7, contact the drive manufacturer. Low-level formatting may be needed.

Failed to read master boot record Failed to read boot record

This indicates problems reading records off the disk. Check SCSI cabling.

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Specifications

About This Appendix

Read this appendix to find out

■ Tech nical spec ificat io ns of the AMM -1570/

1572, SCSI interface, and floppy disk interface

■ Pin assignmen ts for the int ernal and

external SCSI connectors

■ Pin assignmen ts for the Aud io Input

Connector (J4)

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Tech nic al Info rm atio n

The basic technical specifications of the host adapter are described below. If you need more detailed information, contact Adaptec's Lite ratu r e Depar tmen t at the phone number listed inLiterature Hot line on page iii.

Product Specifications

Physical Dimensions

Length: 10.87 inches (27.6 cm ) Width: 1.0 inches (2.54 cm) Height: 4.5 inches (11.43 cm)

Power Requirements

Voltage: +5.0 +/- 0.5 V Current: 2.0 A maximum

Environmental Requirements

Temperature

Operating: 0oC (32oF) to 55oC (131oF) Storage: 0

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C (32oF) to 55oC (131oF)

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SCSI Interfa ce

Electrical Interface

These are the specifications listed in ANSI X3.131-1986 fo r singleended operation.

Output Signals

All signals use open-collector or three-state drivers. Each signal driven by a SCSI device has the following output character is tics when measured at the SCSI device's connector:

Signal Definition Characteristics

V

OL

V

OH

Input Signals

SCSI inputs meet the following electrical charac ter istic s on each signal, including both receivers and passive drivers:

Low-level output voltage 0.0 to 0.5 volts DC at 48 mA sinking

(sig nal a s sertion)

High-level output voltage 2.5 to 5.25 volts DC (signal negation)

Signal Definition Characteristics

V

IL

V

IH

I

IL

I

IH

Low-level input volta ge 0 .0 to 0.8 volts DC (signal true) High-level input voltage 2.0 to 5.25 volts DC (signal false) Low-level input curre nt - 0.4 to 0.0 mA at V1=0.5 volts DC High-level input current 0.0 to 0.1 m A at V1=2.7 volts DC

Minimum input hysteres is = 0.2 volts DC. Maximum input capacitanc e = 25 pF (measured at the device connect or closest to the stub, if any, within the device).

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50-pin Internal SCSI Connector

The 50-pin internal SCSI connector must be an unshrouded 50-pin header , compatible with unshielded Alternative 2 connector . The following table lists the pin assignment s for the internal connec tor.

Signal Name Pin Pin Signal Name

Ground 1 2 -DB(0) Ground 3 4 -DB(1) Ground 5 6 -DB(2) Ground 7 8 -DB(3) Ground 9 10 -D B(4) Ground 11 12 -DB(5) Ground 13 14 -DB(6) Ground 15 16 -DB(7) Ground 17 18 -DB(P) Ground 19 20 Ground Ground 21 22 Ground Ground 23 24 Ground

Open 25 26 Term Power (Fused) Ground 27 28 Ground Ground 29 30 Ground Ground 31 32 -ATN Ground 33 34 Ground Ground 35 36 -BSY Ground 37 38 -ACK Ground 39 40 -RST Ground 41 42 -MSG Ground 43 44 -SEL Ground 45 46 -C/D Ground 47 48 -REQ Ground 49 50 -I/O

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50-pin External SCSI Connector

The 50-pin external SCSI connector must be a shielded 50-pin high density (Alternati ve 2) connector. The following table lists the pin assignment s for the external co nnecto r.

Signal Name Pin Pin Signal Name

Ground 1 26 -D B(0) Ground 2 27 -D B(1) Ground 3 28 -D B(2) Ground 4 29 -D B(3) Ground 5 30 -D B(4) Ground 6 31 -D B(5) Ground 7 32 -D B(6) Ground 8 33 -D B(7) Ground 9 34 -DB(P) Ground 10 35 Ground Ground 11 36 Ground Ground 12 37 Reserved

Open 13 38 Term Power (Fused) Ground 14 39 Reserved Ground 15 40 Ground Ground 16 41 -ATN Ground 17 42 Ground Ground 18 43 -BSY Ground 19 44 -ACK Ground 20 45 -RST Ground 21 46 -MSG Ground 22 47 -SEL Ground 23 48 -C/D Ground 24 49 -REQ Ground 25 50 -I/O

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Floppy Disk Interface

Standard Electronic and Physical Interface

Driver Output Signals:

V

OL

V

OH

I

OL

I

OH

Receiver Input Signals:

V

T-

V

T+

Tied to +5 volt supply through 150 ohm resistors. Schmitt Trigger with

0.8-volt hysteresis.

Connector

The floppy disk interface connector should be an unshrouded 34-pin header .

0 volts minimum, 0.5 volts maximum Open collector, 5.25 volts maximum 60 mA

0.1 mA

1.0 volts maximum

1.4 volts minimum

Audio Input Connector (J4) Pinouts

The pinouts for J4 are as follows:

Pin Signal Name

1 Ground 2Right 3 Ground 4 Left

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I/O Operating Environment

About This Appendix

Read this appendix to find out

■ If embedded support for your host adapter

is available with your operating system

■ Whether you need a dd itio nal soft ware for

your host adapter in the DOS/Windows environment

■ Informati on on Adaptec's EZ-SCSI I/O

Operating Environment Softw are

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Host Adapter Support

You may not need to install additional environment software in order to use your host adapter. Adaptec is working with major operating system suppliers to provide embedded support in their operating systems. Please contact Adaptec or your operating system vendor for informat io n on the current schedul e for I/O Operatin g Environmen t Software suppo rt.

Note: Until embedded support is provided for your par-

ticular operating system, host adapter drivers for the AMM-1570/1572 may be available from Adaptec. To order Adaptec software, call the number for ordering Adaptec software listed in Ordering Softwa re and Cables on page iii.

DOS/Windows

Under MS-DOS 5.0 or higher, up to seven SCSI hard disk drives can be connected to the AMM-1570/1572 without additional software. Older version s of DOS support up to two hard disk drives. Additional software (e.g., Adaptec EZ-SCSI) is required if you want to

■ Support more than two fixed disk drives under versions of

DOS prior to MS-DOS 5.0

■ Support more than eight fixed disk drives (seven per host

adapter) under MS-DOS 5.0 or higher

■ Remove or switch removable media (for example, Bernoulli

®

cartridges) while yo ur com puter is running

■ Support CD-ROM drives

■ Support devices other than disk drives–for example: SCSI tape

drives, scanners, plotters, or WORM drives

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Adaptec EZ-SCSI

If you are running MS-DOS or MS-DOS with Windows, Adaptec EZ-SCSI I/O Operating Environment Software makes driver installation easier than ever before. Adaptec EZ-SCSI is a menudriven software package that configures your operating environment automatically for SCSI operation.

Adaptec EZ-SCSI has a number of utility programs includ ing and

scsifmt

, which are used to partition and format SCSI disk

afdisk

devices. Adaptec EZ-SCSI also includes an ASPI device driver called

aspicd

that supports most models of CD-ROM drives, including

single-session and multi-session Photo CD; and an

aspidisk

device

driver, which supports up to 24 fixed disk devices. To install support for SCSI devices other than fixed disk devices and

CD-ROM drives , check the hardw are docum ent ation for those devices. If the device requires ASPI suppor t, you first need to run Adaptec EZ-SCSI to install an ASPI manag er, and then install any other software provided with the device. If the device is designed to interface directly with the ho st adap ter, no ASPI manager is required. Refer to the Adaptec EZ -SCSI User's Guide for instructions on installing and running Adaptec EZ- SCS I.

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Optimizing Performance

About This Appendix

Read this appendix to find out

■ How to optimi ze your syst em's perfor -

mance after installing the host adapte r

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Performance Tips

The AMM-1570/1572 is de signed to maximize the performance of your SCSI devices and com put er. The following tips will help you take full advantage of the host adapter's advanced des ign features.

Enabling Synchronous Negotiation

Synchronous Negotiat ion is disabled by de fault on the AM M-1570/

1572. You should normally enable this option on the host adapter because most SCSI devic es support it and it allows data to be transferred faster on the bus. Because a few SCSI devices (e.g., certain CD-ROM drives) do not support Synchronous Negotiation and may malfunction if they receive a request for it, you may want to keep Synchronous Negotiation disabled.

Note: Even when Syn chro nous Nego t iatio n is disabled

on the host adapter, t he host adapter switches to Synchronous Mode if it receives a request from the SCSI device.

Disabling the Host Adapter BIOS

Disabling the host adapter BIOS sav es you 16 KBytes of mem ory address space and can also shorten bootup tim e.

You should disable the ho st adapter BIO S if the peripherals on the SCSI bus (for example, CD-ROM drives) are all controlled by software device drivers an d do not require BIOS contro l. When the host adapter BIOS is disabled, you can no longer boot from the SCSI hard disk.

Enabling SCSI Parity Checking

SCSI Parity Checking is a procedure used by the host adapter to verify the accuracy of data transfer on the SCSI bus. Data verification is a desirable option, so SCSI Parity Checking is normally enabled by default. To use this option most effectively, be sure that it is enabled on each SCSI device, as well as on the host adapter. To enable/disable

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SCSI Parity Checking on the host adapter, SeeSCSI Parity Checking on page 2-17. Consult your hardware documentation for instructions on enabling SCSI Parity Checking on peripherals.

Note: The only time yo u should disable SC SI P ar ity

Checking on the host adapter is when your syst em includes a SCSI device that does not support this option. Again, consult the hardware documentation for the device.

Setting Enable Disconnection

In the DOS environment you can increase perfo rmanc e slight ly if you disable SCSI Disconnection w hen there is only a host adapter and a single disk device on the SCSI bus. You shoul d enabl e this option, however, if you have more devices on the SCSI bus.

Fast SCSI Operation

If you have SCSI-2 devices, and would like to transfer data at 10 MBytes/sec, Fast SCSI Operatio n mu st be enabled. When Fast SCSI Operation is enabled, the total length of all cables (internal and external) connected to the bus should not exceed 3 meters to ensure reliable operation.

DOS/Windows Performance

Adaptec's EZ-SCSI I/O Operating Environment Software is designed not only to simplify installat io n of device driv ers under DOS, but also includes ASPI managemen t software to provide enhanced Windows support. The drivers that are installed will give DOS users the best performance pos sible und er not only DOS, but Windows.

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Disk Drives Over 1 GByte

About This Appendix

Read this appendix to find out

■ An overview of extended translation and

the DOS 1 GB yte limit

■ When to use the extended translation

feature

■ Questions and answers about extended

translation

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Extended Translation (Using MS-DOS 5.0)

Adaptec host adapters have always supported the full range of disk drive sizes under all major oper ating s ystem s. As dis k driv es have recently grown beyond 1 GByte in formatted capacity, they have run up against the DOS 1024 cylinder limit.

To continue its support for all SCSI disk drive capacities under DOS, Adaptec has introduced an extended translatio n schem e for the AMM-1570/1572. This feature supports disk drives up to 8 GBytes in size under DOS. To enable this feature, refer to Extended Trans la- tion for Drive > 1GByte on page 2-15.

The DOS 1 GByte Limit

All current versions of DOS are limited to 1024 cylinders per drive. The standard translation schem e for SCSI host adapters, usin g 64 heads and 32 sectors, provides a maximum accessible capacity of 1 GByte.

To eliminat e the 1 GByte lim it, Adapt ec's ext ended translati on feature uses 255 heads and 63 sectors, extending the disk drive capacity limit under DOS to 8 GBytes; the maximum partition size is 2 GByte.

Caution: If you have already partitioned a large disk

drive with one trans lati on metho d , conver sion to another method will erase your data. Be sure to back up your disk drive prio r to any change in the translation method used.

When to Use Extended Translation

With MS-DOS 5.0 and Above

NetWare® 386 and the newer versions of UNIX® do not share the 1024 cylinder limit of DOS and do not require extended translation to support large disk drives .

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Drives With Mixed Partitions

Do not use extended translation on drives formatted with two or more partitions for different operating systems. Use standard translation. The sum of the DO S partiti ons will be less than 1 GByte. Partitions for UNIX and NetWare can be larger than 1 GByte when using standard translat ion.

Note: UNIX is understo od to be AT&T

sions, SCO

®

3.2.4 (or later) and ISC 3.0 (or later).

®

/USL all ver-

Using Fdisk

To install a new disk, or to repartition an existing disk, use the

fdisk

DOS utility as you normally wo uld . The cylinder s ize increases to 8 MBytes when you enable extended translation. The size of the partition you request must therefore be a multiple of 8 MBytes. If you

fdisk

request a partition size that is not a multiple of 8 MByt es,

will

round up to the nearest whole multiple of 8 MBytes.

Question s and Ans we rs Abo ut Extended Translatio n

What happens if I enable extended translation with SCSI drives that are less than 1 GByte in capacity?

Drives handled by the BIOS use extended tran slat ion provided they are over 1 GByte in formatted capacity . Drives with less than 1 GByte of formatted capacity use standard translation regardless of whether extended translation is enabled.

What if I have more than two fixed disk drives on the host adapter?

You can use up to seven fixed dis k driv es under the BIO S provided you are running MS-DOS 5.0 and above.

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Glossary

About This Glossary

Read this glossary to find out

■ Definitions of technical terms used in this

User’s Guide

■ Definitions of terms commonly used in

other documents and publications which discuss the SCSI-to-micro com puter per ipheral connection

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Glossary

Adaptec EZ-Audio

A user-friendly software program that automatically upgrades your system to have audio capabilities. Adaptec EZ-Audio copies the required software programs to the PC's fixed disk and edits the

autoexec.bat

Adaptec EZ-SCSI

file.

A user-friendly software program that automatically installs software drivers for SCSI devices, such as fixed disks and CD-ROM dr ives on a PC. Adaptec EZ-SCSI copies the required software programs to the PC's fixed disk an d edit s the configuration files so the host adapter can access the devices.

Advanced SCSI Programming Interface

See ASPI

AIC-6360

Adaptec's single-chip Fast SCSI host adapter.

AMM-1570/1572

The Adaptec SCSI Audio Host Adapters.

ASPI

Advanced SCSI Program m ing Interface. A standard SCSI software interface that acts as a liaison between host adapters and SCSI device drivers. ASPI enables host adapters and device drivers to share a single SCSI hardware interface.

ASPI Manager

A software module that provides an interface between ASPI modules, a host adapter board, and the SCSI devices connected to the adapter. A single ASPI manager can handle multiple I/O requests from multiple ASPI modules. ASPI managers are written for a specific operating system—such as DOS, OS/2

®

or NetWare—and a specific family of host adapter boards.

Asynchronous Data Transfer

A data transfer met hod th at involves int erlo ck ing a signal to the initiator and a signal to the SCSI target in such a way that each step of the data transfer must occur before the next step can begin. Asynchronous data transfer is usually slow. The rate is not affected by external timing constraints, such as cable length and circuit response time.

AT Bus

See ISA

BIOS

Basic Input/Output System. Software coded into computer chips for various purpo ses. The BIOS on the mot herbo ard of a PC is the special program used to boot and con trol the computer. There are other kinds of BIOS, such as Host Adapter BIOS.

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Bus

A pathway for data in a computer system. All PCs have an expansion bus, which is designed to host add-on (expansion) devices, such as modems, adapter boards, and video adapters. Expansion devices use the bus to send data to and receive data from the PC's CPU or memory. ISA, EISA, Micro

®

Channel

, and VL-Bus™ are the

major bus standards used in PCs.

Bus Device Reset

A SCSI message that clears all pending activity in the SCSI peripheral device target to which it is addressed.

Bus Mastering

A high performance method of data transfer in which the host adapter's onboard process or handles the transfer of data directly to and from a co m p ut er's memory without intervention from the computer's micropro ces s or. This is the fas test method of data transfer available for multitasking operating systems.

Byte

An 8-bit unit of data. A byte is normally the smallest addressable unit of memory and the smallest unit of transfer on the SCSI bus.

Device Driver

A software program that enables a PC to communicate with peripheral devices, such as fixed

disk drives and CD-ROM drives. Each kind of device requires a different driver. Device driver programs are stored on a PC's fixed disk and are loaded into memory at boot time.

Differential

A term referring to the electrical characteristics of the signals used on the SCSI bus int erface. Differential signals occupy two conductors with a positive (+) and negative (-) polarity component of the signal. This minimizes the effect of common mode signal noise and allows the SCSI bus to operate reliably over greater distances at a higher speed.

Direct Memory Access

A mechanism that allows hardware cont rol of th e tran s fer of streams of dat a to or from the main memory of a computing system. The mechanism may require setup by the host software. After initialization, it automatically sequences the required data transfer and provides the necessary address information.

Disconnect/Reconnect

Disconnect is the function that occurs when a target releases control of the SCSI bus, allowing the bus to go to the Bus Free phase. Reconnect is the function that occurs when a target selects an initiator to continue an operation after a disconnect.

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DMA

See Direct Memory Access

EEPROM

Electrically-Erasable Programmable Read Only Memory. An integrated circuit used to store the host adapter configuration. The data stored in the EEPROM can be updated while it is installed on the host adapter.

EISA

Extended Industry Stand ard Architecture. A kind o f computer bus. EISA, an extension of the 16-bit ISA bus standard, allows expansion devices like network cards, video adapters, and modems to transfer dat a across the PC bu s 32 bits at a time. This standard was introduced in 1988.

EPROM

Erasable Programmable Read Only Memory. An integr ated circuit used to store the host adapter BIOS and firmware.

EZ-Audio

See Adaptec EZ-A udio

EZ-SCSI

See Adaptec EZ-SC S I

FIFO

First In/First Out. A queuing order in which items are removed from the queue for execution in the same order in which they are placed in the queue. An integrated circuit that buffers data in such a manner that each byte placed in the

buffer is removed from the buffer in the same order.

Firmware

The softw are th at contro ls and manages the host adapter. It is firm as opposed to soft because it is designed into the host adapter and cannot be modified by the user.

GByte

Gigabyte. A measure of computer storage. One GByte equals approximately one billion bytes. (A byte is the amount of storage needed to hold one character.)

Host

A microcomputer system in which a host adapter is installed. The host uses software to request the services of the host adapter in transfer ring inform ation to and from peripheral devices attached to the SCSI host adapter.

Host Adapter

A printed circuit board or integrated circuit that installs in a standard microcomputer system and provides a SCSI bus connection so that SCSI devices can be connected to the microcomputer.

IBM PC-AT Compatible

Any computer system that emulates exactly the IBM

®

PC-AT

®

and that uses an ISA backplane bus.

Industry Standard Architecture

See ISA

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Initiator

A SCSI device that requests an operation to be performed by another SCSI device (the target). The initiator provides all the comman d inform atio n an d parameters required to perform the operation , but the det ails of the operation are actually sequenced by t he target. The host adapter is sometimes called the initiator.

I/O Operating Environment Software

Additional software that may be required in certain operating system environments in order to use some kinds of SCSI devices with the AMM-1570/

1572. For example, additional software is needed in order to install CD-ROM drives on the SCSI bus in the DOS/Windows environment.

ISA

Industry Standard Architecture expansion bus. A type of computer bus used in most PCs. ISA enables expansion devices like network cards, video adapters, and modems to send data to and receive data from the PC's CPU and memory 16 bits at a time. Expansion devices are plugged into sockets in the PC's moth erboard. ISA is sometim es called the AT bus, because it was originally introduced with the IBM PC-AT in 1983.

KByte

Kilobyte. A meas ure of com puter storage. One KByte equals

1024 bytes. (A byte is the amount of storage needed to hold one character.)

Line-in

A port on audio hardware to which a recording so urce, su ch as CD player output or cassette deck output, can be attach ed.

Line-out

A port on audio hardware to which audio compon ents can be attached. Typically, you connect the line-out signal to an amplifier.

Logical Unit

A physical or virtual device addressed through a target. Each target can have up to eight Logical Units.

Logical Unit Number

An encoded 3-bit identifier for a logical un it.

LU

See Logical Unit

LUN

See Logical Unit Number

Manager

See ASPI Manager

MByte

Megabyte. A measure of computer storage. One MByte equals 1,048, 576 bytes. (A byte is the amount of storage needed to hold one character.)

Micro Channel

A 32-bit computer bus standard introduced by IBM with the PS/2 series of PCs. Micro Channel is

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an extension of the 16-bit ISA standard, allowing expansion devices to move data 32 bits at a time on the PC bus (also called Micro Channelarchitecture).

MIDI

Musical Instrument Digital Interface. A standard communications protocol for the connection of a computer to a musical synthesizer.

Multitasking Operation

The execution of commands in such a way that more than one command is in progress at the same time. Multitasking allows a computer system to take advantage of overlapping activities by using resources that are temporarily not required for other operations. More than one program or more than one portion of a program may be operating in parallel.

Multithrea ded I/O

A method by which data is accessed si mul taneo us ly from multiple SCSI devices to increase a system's data transfer rate. For example, if the system needs data from two disk devices it requests data from the first device, which temporarily disconnect s from the SCSI bus while it is seeking the data. During this delay the system requests data from the second device, and while that device disconnects from the bus to seek the data, the first device start s

sending the requested dat a over the bus, etc. The A MM-1570/ 1572 and all other Adaptec host adapters fu lly s uppo rt multithread ed I/O.

PC-AT

A family of small computers sold by IBM, also called the Personal Computer/AT family of computers. The name is trademarked by IBM.

PIO

See Programmed Input/Outpu t

Programmed Input/Output

A method of data transfer in which the ho st mic roproc ess o r transfers data to and from memory via the computer's I/O ports. PIO enables very fast data transfer rates, especially in single-tasking operating systems like DOS. The AMM-1570/1572 uses this method of data transfer.

RAM

Random Access Memory. Memory of which any byte can be accessed directly in a single memory cyc le. Information can be read from and written to the memory.

ROM

Read-Only Memory. Memory in which any byte can be read but not wri tten.

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AMM-1570/1572 User’s Guide

Scatter/Gather

A device driver feature that allows the host adapter to modify the transfer data point er so that a single host adapter transfer can transfer to many segments of memo ry in a single transfer, m inim izing int errupts and overhead.

SCB

SCSI Control Block. The mechanism used in Emulation Mode to transfer control information to and from the board.

SCSI

Small Computer System s Interface. A bus interface standard that defines physical and electrical characteris tics for hardware devices. SCSI provides a standard interface that enables many different kinds of devices, such as disk drives, magn eto opt ical disks, CD-ROM drives, and tape drives to interface with the host computer.

SCSI Bus

One or more SCSI peripheral devices and a host adapter, connected by cables in a daisy-chain configuration. The bus may include both internal an d exte rnal SCSI devices. In systems that have more than one host adapter, each adapter has its own separate SCSI bus.

SCSI Device

A device such as a host adapter board, fixed disk drive, or CDROM drive that co nfo rms to the

SCSI interface standard and is attached to a SCSI bus cable. The device m ay be an initiator, a target, or capable of both types of operation.

SCSI ID

An identifier assigned to SCSI devices that enables them to communicate with a computer when they are attached to a host adapter vi a the SCSI bus. Each SCSI host adapter board has 8 available SCSI IDs with the numbers 0 through 7. Usually the host adapter itself is assigned SCSI ID 7, and fixed disk devices are assigned to SCSI IDs 0 and 1.

Single-ended

A term referring to the electrical characteristics of the signals used on the SCSI bus interface. Single-ended signals occupy a single conductor and are references to a common ground carried on the cable between the SCSI components attached. Most SCSI devices use single-ended grounding.

Some SCSI devices use a differen- tial grounding scheme. These devices are not supported by the AMM-1570/1572. Differential devices may be damaged if you connect them and the AMM-1570/1572 to the same SCSI bus.

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AMM-1570/1572 User’s Guide Stock Number: 510526-00, Rev. B Page: Glossary-8 Print Spec Number: 492379-00 Current Date: 3/7/94 ECN Date: 3/8/94

Adaptec AMM-1572, AMM-1570 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual