LSI SYM22801 User Manual

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Symbios

™

SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter

User’s Guide

Version 2.0

S14017

Federal Communications Commission (FCC) Declaration of Conformity

This document contains proprietary information of LSI Logic Corporation. The information contained herein is not to be used by or disclosed to third parties without the express written permission of an officer of LSI Logic Corporation.

Document DB15-00106-00, Second Edition (March 1999). This document describes Version 2.0 of LSI Logic Corporation’s Symbios Channel PCI to Ultra SCSI Host Adapter and will remain the official reference source for all revisions/releases of this product until rescinded by an update.

To receive product literature, call us at 1.800.574.4286 (U.S. and Canada); +32.11.300.531 (Europe); 408.433.7700 (outside U.S., Canada, and Europe) and ask for Department JDS; or visit us at http://www.lsilogic.com.

LSI Logic Corporation reserves the right to make changes to any products herein at any time without notice. LSI Logic does not assume any responsibility or liability arising out of the application or use of any product described herein, except as expressly agreed to in writing by LSI Logic; nor does the purchase or use of a product from LSI Logic convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual property rights of LSI Logic or third parties.

The LSI Logic logo design and TolerANT are registere d t ra de ma rks an d Sy mbio s , SDMS and LVDlink are trademarks of LSI Logic C orpora tio n. All other brands a nd product names may be trademarks of their respective companies.

SYM22801 Dual

™

The product in this manual is not intended for use in life-support appliances, devices, or systems. Use of this product in such applications without the written consent of the appropriate LSI Logic Corporation officer is prohibited.

iii

Chapter 1 Using the SYM22801 Host Adapter

1.1 General Descripti on 1-1

1.2 Features 1-2

1.2.1 PCI Interface 1-2

1.2.2 SCSI Interface 1-2

1.2.3 Board Characteristi cs 1-2

1.3 Interface Descriptions 1-3

1.3.1 The PCI Interface 1-3

1.3.2 The SCSI Interface 1-3

1.3.3 Ultra SCSI 1-4

Chapter 2 Installing the SYM22801 Host Adapter

2.1 Quick Installation Pro cedure 2-1

2.2 Detailed Installation Procedure 2-3

2.2.1 Before You Star t 2-3

2.2.2 Inser ting the Host Adapter 2-4

2.2.3 Connecting the SCSI Peripherals 2-6

2.2.4 Making Intern al SCSI Bus Connections 2-8

2.2.5 Making Exter nal SCSI Bus Connection s 2-15

2.3 SCSI Bus Te rmination 2-18

2.3.1 Internal S CSI Connections 2-19

2.3.2 External SC SI Connections 2-20

2.3.3 Internal an d External SCSI Connections 2-21

2.3.4 Internal S CSI Connections for Both Inter nal Connectors 2-22

2.3.5 Setting SCSI IDs 2-25

2.4 Setting Interrupts 2-27

2.5 Completing Your Installation 2-28

Contents v

Chapter 3 Configuring the Host Adapter

3.1 When to Configure the S YM22801 Host Adapter 3-1

3.2 Starting the SCSI BIOS Configuration Utility 3-2

3.2.1 Configuration Utility Ma in Menu 3-3

3.2.2 Utilities Menu 3-6

3.2.3 Device Selections Menu 3-10

3.3 Exiting the SCSI BIOS C onfiguration Utility 3-13

Appendix A Technical Specifications

A.1 Physical Environment A-1

A.1.1 Physical Characteristic s A-1

A.2 Electr ical Characterist ics A-2

A.2.1 Thermal, At mospheric Character istics A-3 A.2.2 Electromagnetic Com pliance A-3 A.2.3 Safety Characteristics A-3

A.3 Operational E nvironment A-3

A.3.1 The PCI Interface A-3 A.3.2 The SCSI Interface A-6 A.3.3 The LED Interface A-9

Appendix B Glossary of Terms and Abbreviations

Index

Customer Feedback

Figures

2.1 Hardware Connect ions for the SYM22801 Host Adapter 2-5

2.2 Inser ting the Host Ada pter 2-6

2.3 SCSI Cables 2-7

2.4 Inter nal Wide SCSI Ribbon Cable to Hos t Adapter Connection 2-9

2.5 Inter nal SCSI Ribbon Cable to Host Adap ter Connection 2-10

2.6 Inter nal SCSI Ribbon Cable to Inter nal SCSI Device Connection 2-11

vi Contents

Tables

2.7 Connectin g Additional Interna l SCSI Devices 2-12

2.8 Multiple Inte rnal SCSI Devices Chained Together 2-13

2.9 Using Both In ternal Connec tors on a Channel 2-14

2.10 SCSI LED Connector s 2-15

2.11 External Cable to Ho st Adapter 2-16

2.12 External Cable to External SCSI Device 2-17

2.13 Multiple Exter nal SCSI Devices Chained Together 2-18

2.14 Internal SCSI Device Termination 2-20

2.15 External SC SI Device Termi nation 2-21

2.16 Internal and External SCSI Device Termination 2-22

2.17 Internal and In ternal SCSI Device Termination 2-23

2.18 Ter mination Override Switc h Settings for U1 and U2 2-25

A.1 SYM22801 Mechani cal Drawing A-2

2.1 SCSI ID Record 2-26

2.2 Setting Interr upts 2-27

3.1 Global Default Se ttings 3-1

3.2 Device Default Settings 3-2

A.1 PCI Connector J1 (Front) A-4 A.2 PCI Connector J1 (Back) A-5 A.3 SCSI Connectors J2/J6 a nd J3/J7 A-7 A.4 SCSI Connectors J4/J8 A-8 A.5 LED Connectors J5/J9 A-9

Contents vii

viii Contents

Audience

Preface

This book is the pri mary reference and User’s Guide for the LSI Logic Symbios™ SYM22801 Dual Ch annel PCI to Ultra S CSI Host Adap ter. It contains a complete f unctional descripti on for the SYM22801 and includes comp lete physical and electr ical specifica tions for the SYM22801.

This document assume s that you have some familiarity with microprocessors and related suppor t devices. The people who benefit from this book are:

•

Engineers and manag ers who are evaluating the processor for possible use in a system

Organization

•

Engineers who are d esigning the proces sor into a system

This document has t he following chapters and appendixes:

•

Chapter 1, Using the SYM22801 Host Adapter, defines the

interfaces and characteristics of the SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter Board.

•

Chapter 2, Installing the SY M22801 Host Adapter, provides both

quick and detailed inst allation instruct ions.

•

Chapter 3, Configuring the Host Adapter, describes the SCSI

BIOS Configuration U tility to configure a dapter and device settings.

•

Appendix A, Technical Specifications, describes the physical and

operational environments of the S YM22801 Host Adapter Bo ard.

Preface ix

•

Related Publications

Appendix B, Glossary of Terms and Abbreviations, provides

definitions of various ter minology that is referenced throughou t this user’s guide.

PCI SCSI Device Management Sys tem SDMS 4.0 User’s Guide,

Document No. DB15-000099-01

x Preface

Chapter 1

Usin

the SYM22801

Host Adapter

This chapter describ es how the SYM22801 Host Ad apter interfaces to PCI computer system s and includes these topic s:

•

Section 1.1, “General Description,” page 1-1

•

Section 1.2, “Features ,” page 1-2

•

Section 1.3, “Interfa ce Descriptions,” page 1-3

1.1 General Description

LSI Logic’s Symbios™ SYM2280 1 Dual Chann el PCI to U ltra SCSI hos t adapter provides a SCS I-3, Ultra SCSI interface to PCI computer systems. Instal ling this ada pter in your P CI system allo ws connecti on of SCSI devices over a S CSI bus.

The dual channel SYM22801 board provides 16-bit, Singl e-Ended (SE), SCSI solutions for your com puter, using only one PCI slot. This board supports legacy Fa st SCSI dev ices, and the newest Ult ra SCSI dev ices. It is also backwards com patible with the existing SYM8751SP host adapter but with a different e xternal connector.

Symbios SCSI Dev ice Management Syst em (SDMS™) software operates the board, but the design of the board does not prevent other software from being wr itten and used with it. BIOS s upport for this host adapter is incorpora ted on the board in an 8 X 64 K Flash BIOS.

This guide and the

User’s Guide

help you gain the full benefits of the SYM2280 1 Dual Channel PCI to Ultra SCSI host ada pter for your computer system.

Symbios SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter 1-1

PCI SCSI Device Ma nagement System SDMS 4.0

contain product in formation and installa tion instructions to

1.2 Features

This section provides a high level overview of the PCI Interface, the SCSI Interface, and Board C hacteristics for the SYM22 801 Host Adapter board.

1.2.1 PCI Interface

•

Full 32-bit DMA bus master

•

Zero wait-state bus mast er data bursts

•

Universal PCI bus vol tage support

1.2.2 SCSI Interface

•

Two independent SCSI channels

•

16-bit single-ended

•

Automatically enabl ed active termination

•

Three connectors per cha nnel: 68-pin VHDCI external 68-pin right-angle high density internal with jack blocks 50-pin vertical low dens ity internal

•

Fast and Ultra SCSI data transfer capability

•

SCSI TERMPWR source with autoresetting circui t breaker and TERMPWR shorted LED

•

SCAM (SCSI Configured AutoMatically) off in BIOS version 4.09 and later

•

Flash EEPROM for BI OS storage

•

Serial NVRAM (Non Volatile Random Ac cess Memory) on each channel for user configur ation utility and SCAM information storage

•

SCSI activity LED conn ector for each channel

1.2.3 Board Charac teristics

•

PCI board dimensions , 190 x 96.52 mm (7.50 x 3.80 inches)

•

Universal 32-bit car d edge connector

1-2 Using the SYM22801 Host Adapter

1.3 Interface Descriptions

This section provides a more detailed explanatio n about the PCI Interface, The SCSI Interface, and Ultra SCSI.

1.3.1 The PCI Interface

PCI is a high-speed standard local bus f or interfacing a numb er of I/O components to the processor and memory subsystems in a high end PC. The PCI functionality for the SY M22801 is contained within the Sy mbios SYM53C876 PCI to Ultra SCSI I/O Processor chi p. The SYM53C876 connects directly to the PCI bus and generate s timing protocol in compliance with the P CI specification.

The PCI interface ope ra tes a s a 3 2- bi t DM A bus m as ter. The connection is made through the edg e connector J1 (see Figure 2.1) . The signal definitions and pin numbers confor m to the PCI Loca l Bus Specific ation Revision 2.1 standard. Th e SYM22801 conforms to t he PCI universal signaling environ ment for a 5 V or 3.3 V PCI b us.

1.3.2 The SCSI Interface

The SCSI functionality for the SYM22801 is contai ned within the Symbios SYM53C876 PCI-Ultra SCSI I/O Process or chip. The SYM53C876 connects directly to the two SCSI bu ses and generates timing and protocol i n compliance with the SCS I standard.

The SCSI interfac es on t he SYM22 801 operate s as 1 6-bit, s ynchronou s or asynchronous, si ngle-ended bus, and supp ort Ultra SCSI protocols and 16-bit arbitrati on. Ea ch in ter fac e is m ade th rough two (and only two) of the connectors J 2, J3, and J4 (for Channel A), or J6, J7 , and J8 (for Channel B). Connectors J2 and J6 are 68-pin hi gh density right-angle receptacles. Connectors J3 and J7 are shielded 68-pin V HDCI 0.8 mm right-angle receptacle s that protrude through th e back panel bracket. Connectors J4 and J8 are 50-pin low dens ity vertical shrouded pi n headers. See Figure 2.1 for the location of these conn ectors.

Single-ended SCSI ac tive termination is prov ided on the SYM22801 board. Termination is automatic ally enabled when only o ne of the connectors J2 , J3, and J4 ( or J6, J7, and J 8) is used, or when an 8-bit device is connected to the 16-b it J3 or J7 connectors . In the latter case,

Interface Descriptions 1-3

1.3.3 Ultra SCSI

only the upper 8 d ata bits are automatically terminated. Th e SYM22801 supplies SCSI bu s TERMPWR (termination powe r) through a blocking diode and a self-reset ting 1.5 A short circuit p rotection device. The onboard LED lights when TERMPWR is shorte d. Separate switc hes for each channel allow user override of termination .

A 40 MHz oscill ator is installed on the SYM22801 to provide the c lock frequency to the SYM53C8 76 that is necessary to support Wide Ultra SCSI transfers o f up to 40 Mbytes/s.

The SYM22801 has full support for Ultra SCSI as well as supporting Fast SCSI simultaneously. Ultra SCSI is an extension of the SCSI-3 famil y of standards that expan ds the bandwidth of the SCS I bus, allowing faster synchronous data tran sfers. Special SCSI cabl es are specified for operation with Ultra SCSI dev ices, and you must consider th e total number of devices and the length of the S CSI bus when setting up your system. See Chapter 2, In stalling the SYM22801 Hos t Adapter for a detailed explanation of SCSI bus connections .

1-4 Using the SYM22801 Host Adapter

Chapter 2

Installin

the SYM22801 Host

Adapter

This chapter prov ides inst ructions on how to i nstall the SYM22801 Ho st Adapter and includes these topics:

•

Section 2.1, “Quick I nstallation Procedure,” page 2-1

•

Section 2.2, “Detaile d Installation Procedure ,” page 2-3

•

Section 2.3, “SCS I Bus Termination,” page 2-18

•

Section 2.4, “Setting Interrupts,” page 2-27

•

Section 2.5, “Comp leting Your Installation,” page 2-28

2.1 Quick Installation Procedure

This section provi des quick setup instr uctions for the experi enced computer user with pri or host adapter installati on and SCSI bus setup experience. If you p refer more detailed guidan ce in installing the SYM22801 host adap ter, please follow the instructions in Section 2.2, “Detailed Installati on Procedure.”

For safe and proper ins tallation, check the u ser’s manual sup plied with your computer and pe rform the following st eps.

Step 1.

Step 2. Switch off and unplug the sy stem. Step 3. Remove the cabinet c over on yo ur comp uter to access the PCI

Symbios SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter 2-1

Ground yourse lf

Remove the SYM22801 Dua l Channel to PCI Ultra S CSI Host Adapter board from t he packing and check that i t is not damaged. An example of this host adapter board is shown in Figure 2.1.

slots. Refer to the use r’s manual for your computer.

before removing th is host adapter board.

Caution:

Ground yourse lf

by touching a met al surface before handling boards. Stati c charges on yo ur body c an damage electronic components. Handle plug-in boards by the edge; do not touch board components or gold connector contacts. The use of a static gro und strap is recommended.

Step 4. Locate the slots for PC I plug-in board installa tion.

Refer to the user ’s manual for your computer to confirm the location of the PCI s lots. The SYM22801 require s a PCI slot that allows bus master operation.

Step 5. Remove the blank panel on the back of the computer aligned

with the PCI slot you intend to use. Save the bracket screw.

Step 6. Carefully inse rt the edge connector J 1 of the host adapter into

the PCI slot. Make sur e the edge connector is pr operly engaged before pressing the board into place. See the example shown in Figure 2.1.

Note:

You may notice that the components on a PCI host adapter face the opposite way from those on other non-PCI adapter boards you have in your system. This i s correct, and the board is keyed to go in only one way.

Step 7. The bracket around the conn ectors J3 and J7 (see Fig ure 2.1)

should fit where the bl ank panel was removed. Sec ure the bracket with the bracke t screw before making th e internal and external SCSI bus c onnections.

Step 8. If you are conne cting any interna l SCSI devices, plug a 68-pi n

connector on the e nd of the internal SCSI ribbo n cable into connector J2 or J6 for Wide SCSI, or a 50-pin connect or into connector J4 or J8 for normal SCSI (see Fi gure 2.1). Make certain to match pin-1 on both connectors.

Note:

It is possible to use both internal co nnectors on a c hannel if no external devices are att ached to that chan el. You may use only two of the thre e connectors on each chan nel at once.

Step 9. Connect your computer’s LED cable if desired. This is designed

to drive the front panel L ED found on most PC cabi nets to indicate activity o n the SCS I bus. See Table A.5 in Appendix A for the signal name an d pin numbers for this LED interface.

2-2 Installing the SYM22801 Host Adapter

Step 10. Replace the cabinet c over as described in the user’s manual

for your computer.

Step 11. Make all external SCS I bus connections. Remember:

Step 12. Finally, refer to the

The SCSI bus requires proper termination, and no duplicate SCSI IDs.

PCI SCSI Device Mana gement System

SDMS 4.0 User ’s Guid e

will use) to load the driver software for your particular operating system.

2.2 Detailed Installation Procedure

This section provi des step-by-step instr uctions for installin g the SYM22801 host adap ter and connecting it to y our SCSI peripherals. If you are experience d in thes e tasks, you may pre fer to u se the p re ced in g Section 2.1, “Quick Inst allation Procedure.” If you ar e not confident that you can perform the tasks as described her e, L SI L ogi c sug ges ts get ting assistance.

2.2.1 Before You Start

Before you start, lo ok through the task list be low to get an overall idea of the steps to perfor m.

•

Open your PC cabin et and select an open PC I slot

(or the guide for the software that yo u

•

Insert the host adapter

•

Connect your SCSI peri pherals – Internal –External

•

Te rminate the SCSI bus

•

Set the peripheral S CSI IDs

•

Make any configuration changes

•

Close your PC cabinet

•

Install the software

Detailed Installation Procedure 2-3

The SCSI host adapter ac ts on your computer ’s behalf as the host to your suite of SCS I peripherals. Each chai n of SCSI peripheral devices and their host adapter work together, and are referred to as a SCSI b us.

Each SYM22801 hos t adapter that you inst all can access up to 1 5 peripheral devic es per channel.

2.2.2 Inserting the Host Adapter

For safe and proper ins tallation, check the u ser’s manual suppl ied with your computer to perfo rm the following steps.

Step 1.

Step 2. Switch off and unplug powe r cords for all components in your

Step 3. Remove the cabinet c over on yo ur comp uter to access the PCI

Caution:

Step 4. Locate the slots for PC I plug-in board installa tion.

Step 5. Remove the blank panel on the back of the computer aligned

Ground yourse lf

Remove the SYM22801 Dua l Channel PCI to Ultra S CSI Host Adapter board from t he packing and check that i t is not damaged. An example of this host adapter board is shown in Figure 2.1.

system.

slots.

Ground yourse lf

removing the cab inet cover. Static charges on your bod y can damage electronic com pon ents . Hand le plu g- in boar ds by the edge; do not tou ch board components or gol d connector contacts . The use of a static ground s trap is recommended.

Refer to the user ’s manual for your computer to confirm the location of the PCI s lots. The SYM22801 require s a PCI slot which allows bus master operation.

with the PCI slot you intend to use. Save the bracket screw.

before removing th is host adapter board.

by touching a met al surface before

2-4 Installing the SYM22801 Host Adapter

Figure 2.1 Hardwa re Connections for the SYM2 2801 Host Adapter

Channel A

LED Connector

Channel A

68 -p in In te rn a l

High Density

SCSI Interface

Channel B

68 -p in In te rn a l

High Dens ity

SC S I In te rfac e

Channel B 50-pin Internal Low Density SCSI Interface J8

Channel B LED Connecto J9

Channel B Termination Override Switches U2

Channel A

68-p in Ex tern al

VHDCI

SCSI Interface

Channel B

68-p in Ex tern al

VHDCI

SCSI Interface

Channel A 50-pin Internal Low Density SCSI Interface J4

SYM22801 to PCI Bus Connector on Mainboard J1

Channel A Termination Override Switches U1

Step 6. Carefully insert the ed ge connector J1 (see Figure 2.1) of the

host adapter into the P CI slot. Make sure the edg e connector is properly engaged b efore pressing the board i nto place as shown in Figure 2.2.

Step 7. To plan on hooking up another host adapter on the same bus

as this host adapter, or an 8-bit device on 68-pin connector, see the Channel Switches section discussed later in this chapter.

Notice that the components on a PCI host adapter face the opposite way from those on other no n-PCI adapter boards you h ave in your system. This is correct, and the bo ard is keyed to go in only one way.

Detailed Installation Procedure 2-5

Figure 2.2 Inserting the Host Adapter

Bracket Screw

Step 8. The bracket around the conn ectors J3 and J7 (see Fig ure 2.1)

should fit where you re moved the blank panel. Secure it with the bracket screw (see Figure 2.2) before making th e internal and external SCSI bus connections.

2.2.3 Connecting the SCSI Peripherals

SCSI bus connections to the SYM22801 host a dapter inside the computer are made w ith an un shiel ded, 68 or 50- conduct or ri bbon cabl e (see Figure 2.3). One side of thi s cab le i s mar ke d with a c ol or to indicate the pin-1 side. Somet imes the connectors on this cable are keyed to ensure proper pin-1 connection.

2-6 Installing the SYM22801 Host Adapter

All external SCSI b us connections to the SY M22801 host adapter are made with shielded, 68-c onductor cables (see Fig ure 2.3). The connectors on thi s cable are always k eyed to ensure proper pin- 1 connection.

Figure 2.3 SCSI Cables

SCS I Cables for Internal Connections

68-pin High Density

and/or

50-pin Low D ensity

SCS I Cable for External Connections

68-pin VHDCI

Important:

You can connect up to six teen SCSI and Fast SCSI devices, including th e host adapter board, on a s ingleended SCSI bus onl y if they are at least .3 m apart on a 6 meter cable. For Ultra S CSI, you can connect up to eight devices, including th e host adapter board, on a single-ended Ultra S C SI bu s on ly if the y are e ven ly sp ac ed on a 1.5 meter Ultra SCSI cabl e (0.19m betw een device s). You can connect up to fou r devices if they are evenly spaced on a 3 meter Ul tra SCSI cable (0.75m be tween devices). Your single-ended SCSI bus sho uld not exceed

Detailed Installation Procedure 2-7

3 meters (total internal and external cable lengths), even with fewer than four dev ices. The SYM22801 autotermination sch eme is designed to opera te properly when plugging the end connector of the SC SI cables into the SYM22801 SCSI c onnectors.

If you connect the SYM22801 in the middle of the bus, you will incur improper ter mination since the swi tches are not assigned on that bus c orrectly. Refer to the Channel Switches section fo r more information.

2.2.4 Making Internal SCSI Bus Connections

This section provides step-by-step instructio ns about making internal SCSI bus connecti ons:

Step 1. If you are connecting an internal Wide SCSI d evice, plug the

68-pin connector on on e end of a wide internal SCS I ribbon cable into the connec tor J2, or J6 (see Figure 2.4). Make certain to match pin-1 on both connectors.

2-8 Installing the SYM22801 Host Adapter

Figure 2.4 Internal Wide SCSI Ribbon Cable to Host Adapter

Connection

Step 2. To connect an 8-bit intern al SCSI device, plug the 50-pin

connector on one e nd of an 8-conductor internal SCSI ribbon cable into the connector J4 or J8 (see Figure 2.5). Make certain to match pin-1 on both c onnectors.

Detailed Installation Procedure 2-9

Figure 2.5 Internal SCSI Ribbon Cable to Host Adapter

Connection

Channel B J8

Channel A J4

Step 3. Plug the 68 or 50-pin connect or on the other end of the internal

SCSI ribbon cable into the SCSI connector on the internal SCSI device. An example of this connection is shown in Figure 2.6. You must match pin-1 on all c onnections.

2-10 Installing the SYM22801 Host Adapter

Figure 2.6 Internal SCSI Ribbon Cable to Internal SCSI Device

Connection

Step 4. Additional inter nal SCSI devices are p lugged in by using an

internal SCSI ribbo n cable with the required nu mber of connectors attac hed along its length as s hown in Figure 2.7.

An example of this type of chained conne ction is shown in Figure 2.8. Make sure to match pin-1 on all co nnections.

Detailed Installation Procedure 2-11

Figure 2.7 Connecting Additional Internal SCSI Devices

2-12 Installing the SYM22801 Host Adapter

Figure 2.8 Multiple Internal SCSI Devices Chained Together

Step 5 . It is also possi ble to use both internal c onnectors on a channel

if you do not attach any external devices to that c hannel. An example of this confi guration is shown in Figure 2.9.

Detailed Installation Procedure 2-13

Figure 2.9 Using Both Internal Connectors on a Channel

Note:

When two connectors are already used on a chan nel, the third connector ca nnot be used.

Step 6. Most PC cabinets ar e designed with a front pane l LED

(sometimes already con nected to an existing IDE drive). You may connect this LE D cable to the host adapter, as shown in Figure 2.10. This causes the front panel LED to indicate activity on the SCSI bus.

This connector is not keye d. The orientation of the LED cable does not matter as lon g as all four pins are con nected.

2-14 Installing the SYM22801 Host Adapter

Figure 2.10 SCSI LED Connectors

Some LED cables have only two wi res. In this ca se, plac e the con nector on one end or the other of J5 or J9. If the LED does not light during SCSI bus activity from this host adapter, you may have to rotate the LED cable 180° on J5 or J9. See Table A.5 for pin descriptions.

2.2.5 Making External SCSI Bus Connections

This section provides step-by-step instructio ns about making internal SCSI bus connecti ons:

Step 1. To connect external SCSI devices to the SYM22801 host

adapter, plug the 68-pin connector on o ne end of a shielded external SCSI VHDC I cable (see Figure 2.3) into the h ost adapter connector J3 o r J7 (see Figure 2.1).

This connector is now bra cketed to the back panel o f your computer. Figure 2.11 shows how this connec tion is made.

Detailed Installation Procedure 2-15

Figure 2.11 External Cable to Host Adapter

Step 2. Plug the 68-pin c onnector on the other end o f the shielded

external SCSI cable into the SCSI connector on yo ur external SCSI device. An exa mple of this connection is shown in Figure 2.12.

2-16 Installing the SYM22801 Host Adapter

Figure 2.12 External Cable to External SCSI Device

Step 3. To connect more than one external SCSI device to the host

adapter, you must chain them together wi th shielded external SCSI cables. An exa mple of these chained connec tions is shown in Figure 2.13.

Detailed Installation Procedure 2-17

Figure 2.13 Multiple External SCSI Devices Chained Together

2.3 SCSI Bus Termination

The devices making u p the SCSI bus are con nected serially (cha ined together) with SCSI cables. The first and last physical SCSI devi ces connected on the ends of the SCSI bus mus t have a set of resisto rs called terminators. A ll other SCSI devices on t he bus must have their terminators removed or disabled.

Remember:

2-18 Installing the SYM22801 Host Adapter

The SYM22801 host adapte r is also on the SCSI bus ; its terminati on i s aut oma tic ally enab led when it is conn ect ed t o the end of the bus.

The peripheral device ter minators are usually set with ju mpers, resistor modules, or with a switc h on the peripheral. Refer to the peripheral manufacturer ’s instructions and to the user ’s manual for information on how to identify the terminator setting of each device and how to change it.

for your computer

Caution:

The SYM22801 senses S CSI devices by detecting the gr ound signal on pin-22 of a 50-conducto r internal SCSI ribbon cable, or pin-50 of an internal or external 68-conductor SCSI cable. If you use an adapter to connect 8-bit devic es externally with a 50- conductor SCSI cable, the ground signal is detec ted on pin-34.

The SYM22801 automatic ally covers SCSI bus termination for five different bus configur ations, dependin g on the use of the c onnectors on the SYM22801 host adapter (see Figure 2.1). The five bus configurations are:

•

Only for internal SCS I connections,

•

Only for external SCSI connections,

•

For both internal and e xternal SCSI connections,

•

For connections to bo th internal connectors, an d

The auto-enable/disable se ns ing featur e on the SY M22 801 may enable termination erroneously if it is directly cabled to another SCSI device or host adapter using the s ame sensing method. Thi s is dealt with by prope rly setting the termination overrid e swi tches U1 or U2 (see Fi gure 2.1) as explained in this s ection under making an internal connection with an other SYM22801.

•

For an internal connection to another SYM 22801, or an y connectio n to a device using the same sensing method for automatic termination as your SYM22801.

2.3.1 Internal SCSI Connections

If only internal SCSI devic e connections to the host adap ter have been made, you must terminate the last internal dev ice on the SCSI bus. You must disable the termination on all other devices. Termination on the host adapter is automatic ally enabled in this case.

SCSI Bus Termination 2-19

Figure 2.14 shows an exam ple of how term ination is deter mined for this SCSI bus configurati on.

Figure 2.14 Internal SCSI Device Termination

2.3.2 External SCSI Connections

If only external SCSI devi ce connections to th e host adapter have bee n made, you must terminat e the last exter nal de vice on the SC SI bus. You must disable the termination on all other devices. Termination on the host adapter is automatic ally enabled in this case.

Figure 2.15 shows an exam ple of how term ination is deter mined for this SCSI bus configurati on.

2-20 Installing the SYM22801 Host Adapter

Figure 2.15 External SCSI Device Termination

Last Device

on Chain -

Termination

Enabled

Does Not End Ch ain Termina tion Disabled

Host Adapter Automatically Terminated

2.3.3 Internal and External SCSI Connections

If you have internal a nd external SCSI device c onnections to the host adapter, you must terminate the las t i nte rnal an d e xte rn al de vices on the SCSI bus. You must disable the terminatio n on all other devices. Termination on the host adap ter is automatically d isabled in this case.

Figure 2.16 shows an exam ple of how term ination is deter mined for this SCSI bus configurati on.

SCSI Bus Termination 2-21

Figure 2.16 Internal and External SCSI Device Termination

Last Device

on Chain

Termination

Enabled

H o s t Ad a pte r

Termination

A u t o mat ic a lly

Disabled

Last Device

on Chain

Termination

Enabled

2.3.4 Internal SCSI Connections for Both Internal Connectors

If you have internal SCS I devi ce co nnecti on s to both internal connec tors of a channel, you mus t te rm in ate the int er nal de vi ce s o n each end of the SCSI bus. You must disable the terminatio n on all other device s. Termination on the host adap ter is automatically d isabled in this case.

Does Not End Chain Termination Disabled

Caution:

Remember, you must not use the ex ternal connecto r for a channel if you use bo th internal connectors for th at channel.

2-22 Installing the SYM22801 Host Adapter

Figure 2.17 shows an exam ple of how term ination is deter mined for this SCSI bus configur ation. If you connect th e SYM22801 in the midd le of the bus, you will incur improper termination si nce the switches are not assigned on that bu s correctly.

Figure 2.17 Internal and Internal SCSI Device Termination

Last Devices

on Chain -

Termination

Does Not

End Chain -

Termination

Disabled

Enabled

If you have an interna l connection to another SYM 22801 host adapter, or any connection to a device that uses the same sensing method for automatic terminatio n as your SYM22801, you must properly set the termination override switches U1 or U2 (see Figu re 2.1).

2.3.4.1 Channel Switches

When connecting anoth er SYM22801, you must tu rn on the switch for the connector used on one or both of the board s. Please refer to Figure 2.18, and the next two p aragraphs, to determine the correct switch setting.

SCSI Bus Termination 2-23

Ho st A da pte r

Automatically

Terminated

Four switches for ea ch channel provide cable detection simu lation and forced upper line te rmination. Switch one simulates a device on the internal 50-pin connec tor, switch two simulates a device on the in ternal 68-pin connector, switch three forces th e upper SCSI line termin ator to stay on, and switc h four simulates a devi ce on the external 68-pi n connector.

When SYM22801 is in the middle of a bus u sing only one connector, then switch Int68 a nd Ext6 8 (switch es 2 an d 4) fo r that bus are on. This forces the terminators fo r that bus to be disabled.

2-24 Installing the SYM22801 Host Adapter

Figure 2.18 Termination Override Switch Settings for U1 and U2

1-INT50

2-INT68

3-UPPER TERM

4-EXT68

1 2

3 4

1 2

3 4

1 2

3 4

1 2

3 4

2 3

De fault setting. Au to te rmin at io n w ill work as desi

Simulates a dev ice on the Internal 50 pin

connector. Use this switch onl device is connected to the internal 50 connector that does not like another LSI Lo

Simulates a dev ice on the Internal 68 pin

connector. Use this switch onl device is connected to the internal 68 connector that does not like another LSI Lo

Forces termination ON the upper data

lines . U s e th is s w itc h whe n a n ar ro w 8- b it device is connected to one of the 68 connectors.

Simulates a device o n the Ex ternal 68 pin

connector. Use this switch onl device is connected to the external 68 connector that does not like another LSI Lo

ned.

ic host adapter.

ic ho s t a d apter.

round pin 22,

round pin 50,

round pin 50 ,

when a

2.3.5 Setting SCSI IDs

You must set each SCSI device and the host adapter to a separate SCSI ID, 0 through 15. SCSI ID 7 is the preset host adapter s etting, giving it the highest priority o n the SCSI bus. If you pla n to boot your computer from a SCSI hard dis k drive on the SCSI bus, that drive should have SCSI ID 0, or the lo west SC SI ID o n the bu s. Chap ter 3, Con figuring the Host Adapter, explains how to set the host adapter ID using the Symbios SCSI Configuration uti lity.

SCSI Bus Termination 2-25

The peripheral device SCSI IDs are usually set with j umpers or with a switch on the peri pheral. Refer to the perip heral manufacturer ’s instructions and to t he us er’s manual for y our com put er to determine the ID of each device and h ow to change it. You must have no duplication of SCSI IDs on a SCSI bus.

Step 1. Determine the SCSI ID of ea ch device on the SCSI bu s. Note

any duplication s and if 8-bit S CSI devices ar e to be used, the host adapter ID must not be set above 7.

Step 2. Make any neces sary changes to the S CSI IDs and record the

IDs for future reference. Th e following table is prov ided as a place to keep this record.

Table 2.1 SCSI ID Record

SCSI ID SCSI Device

15 14 13 12 11 10

9 8 7 SYM22801 Host Adapter (default) 6 5 4 3 2 1 0

2-26 Installing the SYM22801 Host Adapter

2.4 Setting Interrupts

You should not normally have to change the de fault interrupt routi ng for the SYM22801, since p erformance is usually inc reased by having two separate interrupts. H owever, if your system does not suppor t two separate interrupts, j umper TP9 (see Figure A.1) i s provided to change the interrupt routing. The following table explains the jumper settings:

Table 2.2 Setting Interrupts

Jumper

Setting Condition

Jumper Out (default)

Jumper In INTB/ is rerouted at power up to INTA/ on the

INTB/ is routed to INTB/ on the PCI bus

PCI bus

Setting Interrupts 2-27

2.5 Completing Your Installation

Before replacing th e cover on your compu ter, review this installation procedure check list. This will save you effort later.

Verify Installation Procedures Done

Host adapt er connect ion in PCI bus slot secure

Internal SCSI bus connections secure (pin-1 continuity)

External SCSI bus connections secure

Proper SCSI bus termination established

Unique SCSI IDs set and recorded for each device

Step 1. Replace the cabinet c over on your computer. Step 2. Plug in all po wer cord s, and sw itch on pow er to all devic es and

your computer. Step 3. Wait for your computer to boot up. Step 4. To change the configuratio n of your host adapter, see

Chapter 3, Configuring the Host Adapter. Step 5. Finally, refer to the

PCI SCSI Device Mana gement System

SDMS 4.0 User’s Guide

to use) to load the driver software for your particular oper ating

system.

2-28 Installing the SYM22801 Host Adapter

(or the guide fo r the s oftw ar e y ou pl an

Chapter 3

Confi

This chapter discu sses how to change config uration settings and includes these to pics:

•

Section 3.1, “When to Configure the SYM22801 Host Adapter,” page 3-1

•

Section 3.2, “Sta rting the SCSI BIO S Configuration Ut ility,” page 3-2

•

Section 3.3, “Exi ting the SCSI BIOS Configuration Utility,” page 3-13

uring the Host Adapter

3.1 When to Configure the SYM22801 Host Adapter

In most cases you shou ld not need to change the d efault configuration of your host adapter. You may decide to alter these default values if there is a conflict between d evice settings, or if you need to optimize system performance.

The following tables li st the configuration settings you can ch ange. The global settings affect your host adap ter and all SCSI devices which are connected to it. The d evice settings affect only ind ividual SCSI devices.

Table 3.1 Global Default Settings

Settings for the Host Adapter and All Devices Default Settings

SCAM Support Off Parity Checking Enabled Host Adapter SCSI ID 7 Scan Order Low to High

1. Applies to BI OS version 4.09 and late r.

Symbios SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter 3-1

(0-Max)

Table 3.2 Device Default Settings

Settings for Individual SCSI Devices Default Settings

Synchronous Transfer Rate (Mbytes/s) 40 Data Width 16 Disconnect On Read/Write I/O Time-out (seconds) 10 Scan for Devices at Boot Time Yes Scan for SCSI LUNs Yes Queue Tags On

3.2 Starting the SCSI BIOS Configuration Utility

If you have SCSI BIOS ve rsion 4.xx, and it includes the Symbios SCSI BIOS Configurati on Utility, you can change the default conf iguration of your SCSI host adap ters. You may decide to alter these def ault v alues if there is a conflict between device set tings or if you need to opti mize system performance.

The version number of the S C SI B IOS appears in a banner displ ayed on your computer mon itor during boot. I f th e u til ity is av ai la ble , the following message also appear s on your monitor:

Press Ctrl-C to start Sy mbios Confi guration Ut ility...

This message remains on you r scree n for abou t five se conds, giving you time to start the utility. If you decide to press “Ctrl-C,” the mes sage changes to:

Please wait, invoking Sy mbios Confi guration Ut ility...

After a brief pause, your computer monitor displays the Main Menu of the Symbios SCSI BIO S Configuration Utility.

NVRAM (Non Volatile Random Acc ess Memory) is availa ble on the SYM22801 host adap ter. Changes can be made and stored to NV RAM using this menu drive n utility.

3-2 Configuring the Host Adapter

Important: This SCSI BIOS Configuration Utility is a powerful tool. If,

while using it, you somehow disa ble all of yo ur controllers , pressing Ctrl-A (or C trl-E on version 4.04 or la ter) after memory initializa tion during r eboot allows you to r e-enable and reconfigure.

Not all devices detected by the Configur ation Utilit y can be controlled by the BI OS. Devices such as tape drives and scanners require th at a device driver specifi c to that peripheral be loade d. The device manufacturer p rovides the device drivers.

3.2.1 Configuration Utility Main Menu

When you start the Symbios SCSI BIOS Con figuration Utility, the Main Menu appears. This me nu displays a list o f up to four Symbios P CI to SCSI host adapters in your system and info rmation about each of them. The SYM22801 host adapte r appears o n the menu as two SY M53C875 entries; one for each channel . To select an adapter, use only the arrow keys and enter key. Then, you can view and/o r change the current settings for that adapt er and the SCSI devices attached to it.

You can select an adapt er only if Current Status is “On”. Changes are possible since NVRAM is present on this host ada pter.

Here is an example of the Main Menu:

Main Menu

Port Num

SYM53C875 SYM53C875 SYM53C895

Change Adapte r Status Adapter Boot Order Additional Ad apter Config uration Display Mode = Verbose Mono/Color Language Help Quit

Starting the SCSI BIOS Co nfiguration Utility 3-3

FC00 F800 F801

Irq---------S tatus------- -NVRAM Level Current Next-Boot Found 9

9 9

On On On

On Off Off

Yes Yes Yes

Below the list of host adapters on the Main Menu display, you see eight options. They are described in deta il below. If these settings are altered, the system will reboot after the Qu it option is selected, wh ich allows the user to exit from the Conf iguration Utility.

3.2.1.1 Change Adapter Status

The change adapter stat us allows the user to activ ate or deactivate a host adapter and all S CSI devices attached to it. W hen this option is used to make a change , the c hange t akes place aft er a r eboot upon exi t from the utility. Here is an example of the Change Status on Next Boot Menu:

Main Menu Change Status on Next Boo t:

SYM53C875 SYM53C875 SYM53C895

To change an adapter's statu s, select it and press Ent er. Press the Escape (Esc) key to exit from this menu.

3.2.1.2 Adapter Boot Order

The adapter boot order all ows the user to set the or der in which host adapters will boot when you have more than o ne LSI Logic host adapte r in your system. Wh en this option is sel ected, the Boot Order m enu appears. Here is an exa mple of the Boot Order M enu:

Main Menu BootSeq Bus DevFunc BootSeq Bus DevFunc 0 SYM53C875 00 A0 1 SYM53C875 00 98

Port Num

FC00 F800 F801

Irq---------S tatus------- -NVRAM Level Current Next-Boot Found 9

9 9

On On On

On Off Off

Yes Yes Yes

2 SYM53C895 00 90

3-4 Configuring the Host Adapter

To change an adapter's bo ot order, select it and press Enter. You are then prompted to enter t he new boot sequence num ber. To remove an adapter's boot order, press Enter again rather than entering a new sequence number. While the maximum capacity is 32 adapters, only four adapters can be assign ed a boot order starting wit h boot sequence number zero (0). If an invalid number is entered , an error message appears. When the adapt ers are ordered as desired , press the Escape (Esc) key to exit from thi s menu.

3.2.1.3 Additional Adapter Configuration

The additional adapter configuration allows the user to configure an adapter that is not as signed a boot order. When this option is selected, the Adapter Configura tion menu appears. Here i s an example of the Adapter Configuration Menu:

Main Menu BootSeq Bus DevFunc BootSeq Bus DevFunc 1 SYM53C875 00 A0 0 SYM53C875 00 98

SYM53C895

Highlight the adapter to be configured and press E nter. The message “Resetting Adapter, Please wait” appears, and th en the syste m sc an s for devices. Finally, the Utilities Menu appears an d lists the available options, which are described belo w.

3.2.1.4 Display Mode

The Display Mode option dete rmines how much information ab out your host adapters and SCSI devices appear on your computer monitor during boot. For more complete infor mation, choose the v erbose setting. For a faster boot, choose th e terse setting.

3.2.1.5 Mono/Color

The Mono/Color option allows a choic e between a monochr ome or color display for the SCS I BIOS Configuration Util ity. You might need to choose the mono/co lor setting to get a more re adable screen on a monochrome monitor.

Starting the SCSI BIOS Co nfiguration Utility 3-5

3.2.1.6 Language

If enabled, the Languag e opt ion al lows you to select from five lan guages for the configuration uti lity: English, German, Fr ench, Italian, and Spanish.

3.2.1.7 Help

The Help option allows the user to bring up a help screen with information about t he Main Menu.

3.2.1.8 Quit

The Quit option allo ws exiting from the SCS I BIOS Configuration Ut ility when the Main Menu is displayed.

3.2.1.9 Esc

The Esc option allows ex iting fr o m al l th e s cree ns except the Main Menu.

3.2.2 Utilities Menu

When you select a host adapter on the Mai n menu, the Utilities me nu appears as shown below:

SYM53C875

Adapter Setup Device Selection s Help Exit this men u

Choose Adapter Setup to view and change the selected adapter settings. Choose Device Selecti ons to view and change set tings for the devices attached to the se lected adapter.

You are returned to this menu after making ch anges to the con figuratio n of any host adapter or c onnected SCSI device. Be fore you exit this menu, you are prompte d to save or cancel any changes.

3-6 Configuring the Host Adapter

3.2.2.1 Adapter Setup Menu

When you select Ad apte r Setup, the correspondi ng m enu ap pea rs. Here is an example of the A dapter Setup Menu:

Adapter Setup

SCAM Support Off Parity Enabled Host SCSI ID 7 Scan Order Low to High < 0..Max> Removable Med ia Support None CHS Mapping SCSI Plug & P lay Mapping Spinup Delay (sec) 2 Help Restore Defau lt Setup Exit this men u

The settings in this me nu a re gl obal s etti ngs th at affe ct t he sel ec ted h os t adapter and all SCSI d evices attached to it. One o f these choices can be selected by highl ighting it and pressing En ter.

SCAM Support – The Symbios BIOS v ersion 4.xx and a bove s upports the SCSI Plug and Play protocol called SCAM ( SCSI Configured AutoMatically). SCA M support b y defaul t is off in adapt er BIO S versions

4.09 and later fo r the SYM5 3C876 dev ice. The us er may c hoose to turn this on only if the sy stem drivers do not req uire SCAM off. Note that if this BIOS is flashed onto a board with existing se ttings, then these settings will not be changed to reflect the new BIOS defaults. Go into the Configuration Utility to change these settings .

Parity – The Symbios PC I to SCSI host adapters always generate parity, but some older SCSI devices do no t. Therefore, you are offered the option of disabl ing parity checking.

Starting the SCSI BIOS Co nfiguration Utility 3-7

Note: When disab ling parity checking, it is also necessary t o

disable disconn ects for all devices, as parity checking for the reselection phase is not disabled. If a device does not generate parity, and it disconnects, the I/O never completes because the rese lection never complete s.

Host SCSI ID – This option refers to th e ho st adapter’s SCS I ID, whi ch is a unique number us ed to identify the devic e on the SCSI bus.

Note:

Scan Order – This opt ion allows the user to tel l the SCSI BIOS and device drivers to sca n the SCSI bus from low to high (0 to max) SCSI ID, or from high to low (ma x to 0) SCSI ID. If there is more than one device on the SCSI bus, chang ing the scan order changes the ord er in which drive letters are assigned by the system. Dr ive order may be reassigned differently in s yst ems su ppo rt ing the B IO S B oo t Sp ec ifi cat io n (BBS).

See the Chapter 2, “SCSI B IOS” for additional infor mation regarding BBS.

Note:

Removable Media Support – This option defines the removable media support for a specific drive. When this option i s selected, a window appears with three c hoices:

In general, it is suggested that the user not change the host adapter ID from the defau lt value of 7, as this gives it the highest priority o n the SCSI bus. Please also note that if you have 8-bit SCSI devices (narrow), they cannot see host IDs greater than 7.

PCI SCSI Device Management System SDMS 4.0 User’s Guide

This scan order option may conflic t with operating syste ms that automatically as sign a drive order.

•

None

•

Boot Drive Only

•

With Media Install ed

None indicates there is no removable media su pport whether the driv e is selected in B BS as being first, or fir st in scan order in no n-BBS.

Boot Drive Only provides removabl e media support for a remov able hard drive if it is fi rst in the scan order.

3-8 Configuring the Host Adapter

With Media Installed provides removab le media support wherever the drive(s) actually reside s.

One of these choic es can be selected by highlighting it and pr essing Enter.

CHS Mapping – This option defines the cylinder head sector (CHS) values that will be ma pped onto a disk without pr e-existing partition information. SCSI Plug and Play Mapping is th e default value.

To support interchange wi th non-compatible sys tems, there is another option that can be selected by choosing CHS Mapping and then cursoring to “Alterna te CHS Mapping”.

Note:

To remove partitioning, tw o options are available :

•

Reformat the disk using the Forma t Device option. See the “Device Selections Menu” sec tion below for further detai ls regarding this option.

•

Use the FDISK /MBR comma nd at the C:\ prompt, where MBR represents master bo ot record.

Important:

Spinup Delay (seconds) – This option allows the user to st agger spin ups for a longer perio d of time to balance the to tal current load. The default value is 2 seconds with choices between 1 and 10 seconds .

Neither of these options will ha ve any effect after the disk has been partitioned with the FDISK command.

Reformatting the disk or using FDISK /MBR erases all partitioning and data tha t exists. Be careful th at you target the correct disk when using ei ther the Format utility or the FDISK /MBR command.

After clearing the p artitions and data, it is necessary to reboot and clear memor y or the old parti tio ni ng d ata w il l be reused, thus nullifyi ng the previous operation.

This is a power manage ment device designed to a ccommodate disk devices that may have h eavy current load durin g power up. If multiple drives are being pow ered up simultan eously and draw ing heavy curre nt loads, then this optio n staggers the spin ups to limit start-up current.

Starting the SCSI BIOS Co nfiguration Utility 3-9

3.2.3 Device Selections Menu

When you select t he Device Se lections o ption, the cor responding m enu appears:

Device Select ions 0-7

Sync Data Disc Time Scan Queue Initial

Rate Width Out Bus LUNS Tags Boot 0-Dev0 N/A 40 16 On 10 Yes Ye s On No 1-Dev1 N/A 40 16 On 10 Yes Ye s On No 2-Dev2 N/A 40 16 On 10 Yes Ye s On No 3-Dev3 N/A 40 16 On 10 Yes Ye s On No 4-Dev4 N/A 40 16 On 10 Yes Ye s On No 5-Dev5 N/A 40 16 On 10 Yes Ye s On No 6-Dev6 N/A 40 16 On 10 Yes Ye s On No SYM53C875 40 16 On 10 Yes Yes On No Device Select ions 8-15 Help Exit this menu

The settings in this men u affect individual SCS I devices attached to th e selected host ad apter. Changes made from this me nu do not cause the system to reboot upon e xit from the SCSI BI OS Configuration Ut ility. To change a value, select th e required device by using the ar row keys and press Enter. A new menu appears provi ding the options and utilit ies available. For example, you could select the S ync R ate option to change the Sync Rate valu e of the chosen devic e

3-10 Configuring the Host Adapter

SYM53C875

Inside device

Sync Rate Width Disconnect Read/Write I/ O Timeout Scan for Devi ce at Boot T ime Scan for SCSI LUNs Queue Tags Initial Boot Format Verify Help Restore Defau lt Setup Exit this men u

Please review the descriptions of each option below before changing any values.

Sync Rate (Mbytes/s) –

transfer rate the host adapter will attempt to ne and a SCSI device mus t a

Width (bits) –

This option defines the maximum SCSI data width the host adapter will attempt t o ne device must a

ree to a width they can both handle. Only host adapters

This option defines th e maximum data

otiate. The host adapter

ree to a rate they can both handle.

otiate. The host adapter and a SCSI

that can do 16-bit d ata transfers have this optio n enabled.

Starting the SCSI BIOS Co nfiguration Utility 3-11

Disconnect – SCSI devi ces have the ability to dis connect from the initiator during an I/O transfer. This disconnect option frees the SCSI Bus to allow other I/O processes. This opti on tells the host adapter whether or not to allow a devic e to disconnect. Som e devices run faste r with disconnects enabled (mostly newer d evices), whi le som e run fas ter with disconnects disab led (mostly older dev ices).

Read Write I/O Time-out (seconds) – This option sets the amount of time the host adapter waits for a read, write, or s eek command to complete before trying the I/O transfer again. Sin ce this provides a safeguard allowing th e system to recove r if an I/O operation fail s, it is recommended that you always set the time-out to a value greater than zero.

Note:

A zero value allows unlimited time for a n operation to complete and coul d result in the system b eing hung-up.

Scan for Device at Boot Time – S et this option to “No” if th ere is a device that you do not want to be available to the system. Also, on a bus with only a few devi ces attached, you can speed up boot time by changing this se tting to “No” for all unus ed SCSI IDs.

Scan for SCSI Logical Units (LUN s) – Set this option to “No” if problems arise with a d evice th at res ponds to al l LUNs whether they are occupied or not. For exa mple, if a SCSI device wi th multiple LUNs is present on your system b ut you do not want all of th ose LUNs to be available to the system , then set this option to “No.” This will limit the scan to LUN 0 only.

Queue Tags – If the device driver has the capability, this option all ows the user to enable or disable the issuing of q ueue tags during I/O requests.

Initial Boot – This option allows any d evi ce attached to the first ad apte r to become the boot devi ce. It provides the users of n on-BBS personal computers with some of the flexibility of a BBS machine.

Format Device – If enabled, th is option allows the u ser to low-level format a magnetic disk drive. Low-level formatti ng will completely and irreversibly erase all data on the drive. Formatting will default the drive to a 512-byte sector size even if the dr i ve had prev i ous ly b een for ma tted to another sector size.

3-12 Configuring the Host Adapter

Ver i fy – This option allows the us er to read all the sect ors on a disk looking for errors. Wh en selected, this option displays the following message:

“Verify all sectors on the device Press ESC to abort Else press any key to continue”

Help – This option brings u p a help screen with inform ation about the Device Selections Men u.

Restore Default Setup – This option resets all device selections back to their default se ttings. Select this op tion to restore all m anufacturing defaults for the specifi ed adapter. Note that all user customized option s will be lost upon savin g after restoring default s etup.

Exit this menu – This optio n allows the user to l eave the Device Selections Menu and return to the previous sc reen.

3.3 Exiting the SCSI BIOS Configuration Utility

Since some changes on ly take effect after the syste m reboots, it is important that the user exit from this SCSI BIOS Configuration Utility properly. Return to the Main Menu and exit via the Quit option. Rebooting the system without pr operly exiting from this uti lity may cause some changes to not take effect.

Exiting the SCSI BIOS Configuration Utility 3-13

3-14 Configuring the Host Adapter

Appendix A Technical Specifications

This section discusses the physical environme nt associated with the SYM22801 Host Adapter. It includes a mechanical drawing of this board, which is shown in Figu re A.1. It also includes thes e topics:

•

Section A.1, “Ph ysical Environment, ” page 1-1

•

Section A.2, “El ectrical Characterist ics,” page 1-2

•

Section A.3, “Operati onal Environment,” page 1 -3

A.1 Physical Environment

This section discusses the physical, electrical, thermal, and safety characteristics of the SYM22801 Host Adapter boa rd. Additionally, this board is compliant with electromagnetic stand ards set by the FCC.

A.1.1 Physical Characteristics

The dimensions of the SYM22 801 host adapter boa rd are 7.50” x 3.80”. PCI connection is ma de through the edge conn ector J1. Internal 16-bit SCSI connection is mad e through the 68-p in high dens ity connec tors J2 or J6. Internal 8-bit SC SI connection is made th rough the 50-pin low density connectors J4 or J8. E xternal SCS I connection is made thro ugh the 68-pin VHDCI connectors J 3 or J7. The J3 and J7 connectors extend through the ISA /EISA bracket, which is a ttached to the face of the connector outsid e the cabinet where the SY M22801 is installed.

The bracket is a standar d ISA type with a cutout to a ccommodate the connectors. The J5 and J9 connectors are for connecting the computer’s Busy LED. It i s a 4-pin o ne row right angle head er wired in p arallel with the on-board LED. The component height on the top and bottom of the board follows the P CI specification.

A-1

Figure A.1 SYM22801 Me chanical Drawing

190.50(REF) (7.50(REF))

96.52(REF) (3.80(REF))

A.2 Electrical Characteristics

The SYM22801 maximum power requirements, in cluding SCSI TERMPWR, under normal operation are as follows:

+ 5 V DC

5% 1.5 A Over the operating range 0–55 °C

TERMPWR Fail L E D

SYM53C 876

NVRAM

TP9

TERMPW R Fail LED

FLASH EEPROM

+ 12 V + 3.3 V

0.6 V 50 mA Over the operating range 0–55 °C

3 V 130 mA Over the operating range 0–55 °C

±0.

Under abnormal conditi ons such as a short on SCSI TERMPWR, + 5 V current may be high er. At temperatures of at least 25 4 A is sustained no lon ger than 30 seconds befor e the self-resetting TERMPWR short circuit pr otection device opens .

The PCI PRSNT1# and PRSNT2# pins are set to indicate a 15 W maximum configurat ion.

A-2 Technical Specifications

when operating in a 3.3 V PCI slot

C a current of

A.2.1 Thermal, Atmospheric Characteristics

The board is designed to operate in an environmen t defined by the following parameters:

•

Te mperature range: 0–55 °C (dry bu lb)

•

Relative humidity r ange: 0–90% (noncondensing)

•

Maximum dew point tempe rature: 32 °C

A.2.2 Electromagnetic Compliance

The board is designed and implemented to minimi ze electromagnetic emissions, susceptibi lity, and the effects of electr omagnetic discharge. The board meets the requirements of FCC and CISPR Class B limits and is marked with the FCC S elf Certification logo. It also carries the CE mark.

A.2.3 Safety Characteristics

The bare board meets or e xceeds the requirements of UL flammability rating 94 V0. The bare board is also marked with the supplie r ’s name or trademark, type, and UL flamma bility ra ting. Since this board is instal led in a PCI bus slot, all voltages are below the SE LV 42.4 V limit.

A.3 Operational Environment

The SYM22801 is desi gned for use in PCI comput er systems with an ISA/EISA bracket type . The Symbios SDMS™ (SC SI Device Management System) software operates the board, but the design of the board does not preve nt the use of other software.

A.3.1 The PCI Interface

The PCI interface ope ra tes a s a 32-bit DMA bus mas ter. The connection is made through the edge c onnector J1, which pro vides connections on both the front and back of the board. The signal defini tions and pin numbers conform to the P CI Local Bus Specific ation Revision 2.1 standard. The following tables show the signal a ssignments.

Operational Environment A-3

Note: The + 3.3 V pins are tied toge ther and dec oupled with high

frequency bypass ca pacitors to ground. No cur rent from these 3.3 V pins is used on the board. Th e PCI portion of the SYM53C876 chip is powered from the 3 V/5 V p ins.

Table A.1 PCI Connector J1 (Front)

Signal Name Pin Signal Name Pin Signal Name Pin

−12 V 1 GND 22 +3.3 V 43 TCK 2 AD27 23 C_BE1/ 44 GND 3 AD25 24 AD14 45 TDO 4 +3.3 V 25 GND 46 +5 V 5 C_BE3/ 26 AD12 47 +5 V 6 AD23 27 AD10 48 INTB/ 7 G ND 28 GND 49 INTD/ 8 AD21 29 KEYWAY 50 GND (PRSNT1/) 9 AD19 30 KEYWAY 51 RESERVED 10 +3.3 V 31 AD08 52 GND (PRSNT2/) 11 AD17 32 AD07 53 KEYWAY 12 C_BE2/ 33 +3.3 V 54 KEYWAY 13 GND 34 AD05 55 RESERVED 14 IRDY/ 35 AD03 56 GND 15+3.3 V 36GND 57 CLK 16 DEVSEL/ 37 AD01 58 GND 17 GND 38 3 V/5 V 59 REQ/ 18 3 V/5 V 19 PERR/ 40 +5 V 61 AD31 20 +3.3 V 41 +5 V 62 AD29 21 SERR/ 42

1. Shaded signals are not connected.

LOCK/ 39 ACK64/ 60

A-4 Technical Specifications

Table A.2 PCI Connector J1 (Back)

Signal Name Pin Signal Name Pin Signal Name Pin

TRST/ 1 AD28 22 PAR 43 +12 V 2 AD26 23 AD15 44 TMS 3 GND 24 +3.3 V 45 TDI 4 AD24 25 AD13 46 +5 V 5 IDSEL 26 AD11 47 INTA/ 6 +3.3 V 27 GND 48 INTC/ 7 AD22 28 AD09 49 +5 V 8 AD20 29 KEYWAY 50 RESERVED 9 GND 30 KEYWAY 51 3 V/5 V 10 AD18 3 1 C_BE0/ 52 RESERVED 11 AD16 32 +3.3 V 53 KEYWAY 12 +3.3 V 33 AD06 54 KEYWAY 13 FRAME/ 34 AD04 55 RESERVED 14 GND 35 GND 56 RST/ 15 TRDY/ 36 AD02 57 3 V/5 V 16 GND 37 AD00 58 GNT/ 17 STOP/ 38 3 V/5 V 59 GND 18 +3.3 V 39 REQ64/ 60 RESERVED 19 SDONE 40 +5 V 61 AD30 20 SBO/ 41 +5 V 62 +3.3 V 21 GND 42

1. Shaded signals are not connected.

Operational Environment A-5

A.3.2 The SCSI Interface

The SCSI interface oper ates as 8-bit or 16-bit, sy nchronous or asynchronous, single-ended bus, and s upports SCSI-2 protoc ols and 16-bit arbitration. The i nterface is made through c onnectors J2, J3 and J4 for channel A. Cha nnel B connec tors are J6, J7, and J8. Connec tors J2 and J6 are 68-pi n high density right angl e receptacles for internal connections. Conn ectors J3 and J7 are 68-pin VHDCI right angle receptacles that protru de throu gh th e bac k p anel br acke t. Connectors J4 and J8 are 50-pin low density vertical shrouded headers used for internal SCSI connections.

Note:

Active single-en ded SCSI termination i s provided automatical ly. SCSI termination power is also supplied by th e board. The following tab les show the signal assi gnments for J2/J6, J3/J7, a nd J4/J8.

Up to two (and only two) con nections are a llowed on each channel. Connecting to all three connectors on a channel will result in an un reliable configuratio n.

A-6 Technical Specifications

Table A.3 SCSI Connectors J2/J6 and J3/J7

Signal Name Pin Signal Name Pin Signal Name Pin

GND 1 GND 24 SD7/ 47 GND 2 GND 25 SDP/ 48 GND 3 GND 26 GND 49 GND 4 GND 27 CPRSNT_A-B/ GND 5 GND 28 TERMPWR 51 GND 6 GND 29 TERMPWR 52 GND 7 GND 30 N/C 53 GND 8 GND 31 GND 54 GND 9 GND 32 SATN/ 55 GND 10 GND 33 GND 56 GND 11 GND (J2/J6)

34 SBSY/ 57 GND/16CBLSNS (J3/J7)

GND 12 SD12/ 35 SACK/ 58 GND 13 SD13/ 36 SRST/ 59 GND 14 SD14/ 37 SMSG/ 60 GND 15 SD15/ 38 SSEL/ 61 GND 16 SDP1/ 39 SC_D/ 6 2 TERMPWR 17 SD0/ 40 SREQ/ 63 TERMPWR 18 SD1/ 41 SI_O/ 64 N/C 19 SD2/ 42 SD8/ 65 GND 20 SD3/ 43 SD9/ 66 GND 21 SD4/ 44 SD10/ 67 GND 22 SD5/ 45 SD11/ 68 GND 23 SD6/ 46

1. CPRSNT_A/ (J2/J6) and CPRSNT_B/ (J3/J7) are used to sense the connection of a standard SCSI dev ice by sens ing SCSI sta ndard GND on this pin.

Operational Environment A-7

Table A.4 SCSI Connectors J4/J8

Signal Name Pin Signal Name Pin

GND 1 SD0/ 2 GND 3 SD1/ 4 GND 5 SD2/ 6 GND 7 SD3/ 8 GND 9 SD4/ 10 GND 11 SD5/ 12 GND 13 SD6/ 14 GND 15 SD7/ 16 GND 17 SDP/ 18 GND 19 GND 20 GND 21 CPRSNT_C/

N/C 23 N/C 24 N/C 25 TERMPWR 26 N/C 27 N/C 28 GND 29 GND 30 GND 31 SATN/ 32 GND 33 GND 34 GND 35 SBSY/ 36 GND 37 SACK/ 38 GND 39 SRST/ 40 GND 41 SMSG/ 42 GND 43 SSEL/ 44 GND 45 SC_D / 4 6 GND 47 SREQ/ 48 GND 49 SI_O/ 50

1. CPRSNT_C/ is used to sense the connection of a standard SCSI device by sensing SCSI standard GND on this pin.

A-8 Technical Specifications

A.3.3 The LED Interface

The LED interface on the SYM22801 is a four-wire a rrangement that allows the user to co nnect an LED harness to t he board. The GPIO0_FETCH line (maximum output low voltage 0 .4 V and minimum output low current 16 mA) is pulled low to compl ete the circuit when a harness with an LED is attach ed. The connector s on the SYM22801 ar e J5 and J9.

Table A.5 LED Connectors J5/J9

Signal Name Pin

LED+ 1 LED− 2 LED− 3 LED+ 4

Operational Environment A-9

A-10 Technical Specific ations

Appendix B

Glossar

of Terms and

Abbreviations

Address A specific location in memory, designated either numerica lly or by a

symbolic name.

Asynchronous Data Transfer

BIOS Ba sic Input/Output System . Software that provides bas ic read/write

Bit A binary digit. The smallest unit of i nformation a computer uses. Th e

Bus A colle ction of unbroken signa l lines across whic h information is

A method of transmis sion which does not requir e a common clock, but separates fields of data by stop and start bit s. It is slower than synchronous data tr ansfer.

capability. Usually kept as firmware (ROM ba sed). The sys tem BIOS on the mainboard of a computer is used to boot and control the system. The SCSI BIOS on your hos t adapter acts as an extensi on of the system BIOS.

value of a bit (0 or 1 ) represents a two-way choi ce, such as on or off, true or false, and so on.

transmitted from one p art o f a co mpu ter sy stem to a noth er. Connections to the bus are made vi a taps on the lines.

Bus Mastering A high-performan ce way to transfer data. Th e host adapter controls the

transfer of data directly to and from system memory without bothering the computer ’s microprocessor. This is the fastest way for multitasking operating systems to tr ansfer data.

Byte A unit of i nformation consisting of e ight bits. Chain A topolo gy in which ev ery processor is connected to t wo others, e xcept

for two end processors th at are connected to onl y one other.

CISPR A special in ternational commi ttee on radio interferen ce (Committee,

International and Spec ial, for Protection in Rad io).

Glossary of Terms and Abbreviations B-1

Configuration Refers to the way a compute r is set up; the combined hardware

components (compute r, monitor, keyboard, and peripher al devices) that make up a computer s ystem; or the software setti ngs that allow the hardware components to communicate with each other.

CPU Central Processing U nit. The “brain” of the comput er that performs the

actual computations. The term Mi cro Processor U nit (MPU) is also used .

DMA Direct Memory A ccess. A met hod of moving dat a from a storag e device

directly to RAM, without using the CPU’s resources.

DMA Bus Master

A feature that allows a peripheral to control the flow of data to and from system memory by blocks, as opposed to PIO (Pro grammed I/O) where the processor is in control and the flow is by byte.

Device Driver A program that allows a micropr ocessor (through the operating s ystem)

to direct the operation o f a peripheral device.

Differential A hardware configuration for connecting SCSI devices . It uses a pair of

lines for each signal transfer (as opposed to sin gle-ended SCSI which references each SCSI signal to a common groun d).

Dword A double word is a group of 4 consecutive bytes or characters that are

stored, addressed, transmitted, and operated on as a unit. The lower two address bits of the least s ignificant byte must equal zero i n order to be dword aligned.

EEPROM Electronically-Era sable Programmable Re ad Only Memory. A memory

chip typically used to store configuration info rmation. See NVRAM.

EISA Extended Industry Standar d Architec ture. An e xtensio n of the 16- bit ISA

bus standard. It allo ws devices to perform 32-bi t data transfers.

External SCSI Device

A SCSI device installed outside the computer cabinet. These devices are connected in a c ontinuous cha in using spe cific types of shielded cables .

Fast SCSI A standard for SCSI data tr ansfers. It allows a transfer rate of up to

10 Mbytes/s over an 8-bit SCS I bus and up to 20 Mbytes/s over a 16 -bit SCSI bus.

FCC Federal Co mmunications Commiss ion. File A named col lection of information s tored on a disk.

B-2 Glossary of Terms and Abbreviations

Firmware Software that is permanen tly stored in ROM. Therefor e, it can be

accessed during b oot time.

Hard Disk A disk made of metal and per manently sealed into a drive cartridge. A

hard disk can stor e very large amounts of information.

Host The computer system in which a SCSI host adapter is ins talled. It uses

the SCSI host adapter to transfer information to an d from devices attached to the SC SI bus.

Host Adapter A c ircuit board or in tegrated circuit th at provides a SCS I bus connection

to the computer system.

Internal SCSI Device

A SCSI device inst alled inside the computer cabinet. Th ese device s are connected in a con tinuous chain using an unshielded ribbo n cable.

IRQ Interru pt Request Channel. A path through which a device can get the

immediate attention of the computer’s CPU. The PCI bus assigns an IRQ path for each SCSI hos t adapter.

ISA Industry Standard A rchitecture. A type of computer bus used in most

PC’s. It allows devices to send and rece ive data up to 16-bits at a time.

Kbyte Kilobyte. A measure of computer stor age equal to 1024 bytes. Local Bus A way to connect peripherals d irectly to computer memory. It bypasses

the slower ISA and EISA busses. PCI is a l ocal bus standard.

Logical Unit A subdivision, either logi cal or physical, of a S CSI device (actual ly the

place for the devic e on the SCSI bus). Mos t devices have only one logical unit, but up to eight are allowed for each of the eight possible devices on a SCSI bus.

LUN Logical Unit Number. An identifier, zero to seven, for a logi cal unit. Mbyte Megabyte. A measure of computer storage equal to 1024 kilobytes. Mainboard A large ci rcuit board that holds RAM, ROM, the microproces sor, custom

integrated circuits, an d other compon ents that make a c omputer work . It also has expansion slots for host adapters and other expan sion boards.

Main Memory The part of a computer’s memory which is directly accessible by the CPU

(usually synony mous with RAM).

Glossary of Terms and Abbreviations B-3

Motherboard Se e Mainboard. In some coun tries, the term Motherbo ard is not

appropriate.

Multi-tasking The executing of m or e th an one c omm and at the sa me tim e. Th is a llo ws

programs to operate in parallel.

Multi-threading The simultaneous accessing of data by more than one SCSI device. This

increases the da ta throughput.

NVRAM Non Volatile Random Acces s Memory. Actually an EEPROM

(Electronically-Erasable Programmable Read Only Memory chip) used to store configuratio n information. See EE PROM.

Operating System

A program that organ izes the internal acti vities of the computer and its peripheral devic es. An operating syste m performs basic task s such as moving data to and fr om devi ces, an d managin g inform ation in memory. It also provides the us er interface.

Parity Checking A way to verify the accuracy of data transmitted over the SCSI bus. One

bit in the transfer is used to make the sum of all the 1 bits either odd or even (for odd or ev en p ar ity) . If the s um i s not c or rect, an e rror mes sa ge appears.

PCI Peripheral Component Interconnect. A local bus specification tha t a llo ws

connection of per ipherals directly to computer memory. It bypasses the slower ISA and EI SA busses.

Peripheral Devices

A piece of hardware (s uch as a video monitor, disk drive, printer, or CD-ROM) used with a compu ter an d und er the co mpu ter’s control. SCSI peripherals are con trolled through a SCSI ho st adapter.

Pin-1 Orientation

The alignment of pin- 1 o n a SCS I c ab le co nne cto r and th e pi n-1 pos iti on on the SCSI connector into which it is inserted. External SCSI cables are always keyed to insure proper alignment, but internal SCSI ribbon cables are sometimes not.

PIO Programmed In put/Output. A way the CPU c an t rans fer dat a to a nd fr om

memory via the computer’s I/O ports. PIO is usually faster than DMA, but requires CPU time.

Port Address Al so Port Number. The address through which commands are sent t o a

host adapter board. This address is assigned by the P CI bus.

Port Number See Port Address.

B-4 Glossary of Terms and Abbreviations

Queue Tags A way to keep tr ack of multiple command s that allows for increased

throughput on the SCSI b us.

RAM Random Access Memory. The computer’s primary wor king memory in

which program instructions and data are stored and are accessible to the CPU. Information can be written to and read from RAM. The cont ents of RAM are lost when the c omputer is turned off.

RISC Core LSI Logic SCSI chips contain a RISC (Reduced Inst ruction Set

Computer) processor, programmed throu gh microcode scripts.

ROM Rea d O n ly Memory. Memory from which information c an be read but not

changed.The contents of ROM are not erased when the compute r is turned off.

SCAM SCSI Configur ed Aut oMa tic al ly. A method to automaticall y all oc ate SCS I

IDs via software when SC AM compliant SCSI devi ces are attached.

Scatter/Gather A device dr iver feature that lets the h ost adapter modify a tra nsfer data

pointer so that a single host adapter transfer can access many segments of memory. This minimizes interrupts and tran sfer overhead.

SCSI Small Computer System Interface. A specification for a high performance

peripheral bus and com mand set. The original standard is referred to as SCSI-1.

SCSI-2 The c urrent SCSI specification wh ich adds features the original SCSI-1

standard.

SCSI-3 The next SCSI specification, which adds features to the SCSI-2 standard.

Although this version is still in development, parts of the SCSI-3 standard are already in use.

SCSI Bus A host adapter and one or more SCSI peripher als connected by cable s

in a linear chain config uration. The host ada pter may exist any where on the chain, allowin g connection of both internal and external S CSI devices. A system may have mo re than one SCSI bus by usin g multiple host adapters.

SCSI Device Any device th at conforms to the SCSI st andard and is attached to t he

SCSI bus by a SCSI cable. Thi s includes SCSI hos t adapters an d SCSI peripherals.

Glossary of Terms and Abbreviations B-5

SCSI ID A way to uniq uely identify each SC SI device on the SCSI bus. Each

SCSI bus has eight av ailable SCSI IDs numbere d 0 through 7 (or 0 through 15 for Wide SCSI ). The host adapter usually gets ID 7 giving it priority to contro l the bus.

SDMS SCSI Device Manag ement System. A LSI Logic software product that

manages SCSI system I/O.

STA SCSI Trade Association. A group of companies that c ooperate to

promote SCSI parall el interface technology as a viable mainstream I/O interconnect for c ommercial computing .

Single-Ended SCSI

A hardware specification for connecting SCSI devices. It references each SCSI signal to a common gro und. This is the most commo n method (as opposed to differential SCSI which uses a separate gr ound for each signal).

Synchronous Data Transfer

One of the ways data is transferred over the SCSI b us. Transfers are clocked with fixed-freq uency pulses. This is fas ter than asynchronous data transfer. Synchronous data transfer s are negotiated between the SCSI host adapter and e ach SCSI device.

System BIOS Controls the low le vel POST (Power On Self Test), and basic ope ration

of the CPU and computer sy stem.

Termination The ele ctrical connection requ ired at each end of the SCS I bus,

composed of a set o f resisters. It improves the integrity of bus si gnals.

Ultra SCSI A standard for SC SI data transfers. It allows a transfer rate of up to

20 Mbytes/s over an 8-bit SCS I bus and up to 40 Mbytes/s over a 16 -bit SCSI bus. STA (SCSI Trade Association) supports using the term “Ultr a SCSI” over the term “Fa st-20”.

VCCI Voluntary Control Council for Interfer ence. Virtual Memory Space on a hard disk that can be used as if it were RAM. VHDCI Very High Density Cable Interconn ect. A trapezoidal shield ed connector

that has a 0.8 mm pitch.

Wide SCSI A SCSI-2 feature all owing 16 or 32-bit transfers on the SCSI bus. This

dramatically increas es the tr ansfer rate over the standard 8-bi t SCSI bus.

Word A two byte (o r 16-bit) unit of information .

B-6 Glossary of Terms and Abbreviations

Index

active termination

single-ended SCSI 1-3, A-6

adapter configuration menu

example 3-5

adapter setup menu

CHS mapping 3-9 example 3-7 host SCSI ID 3-8 parity 3-7 removable media support 3-8 SCAM support 3-7 scan order 3-8 spinup delay 3-9

additional adapter

configuring 3-5 alternate CHS mapping 3-9 auto-termination

enabled/disabled 2-19–2-22

scheme 2-8

BIOS support

for the SYM22801 board 1-1 board characteristics

SYM22801 dimensions A-1

SYM22801 host adapter 1-2 boot order menu

changing an adapter’s boot order 3-5

example 3-4

removing an adapter’s boot order 3-5

setting the boot order 3-4

cable detection simulation 2-24 chained connection 2-11, 2-17 change status on next boot menu

example 3-4 changing the default configuration

SCSI host adapters 3-2

channel switches

incurring improper termination 2-8 settings 2-23

check list

verifying installation procedure 2-28 choosing the mono/color setting 3-5 completing the SYM22801 installation 2-28 configuring the host adapter 3-1–3-13 connecting the SCSI peripherals 2-6 connectors

high density 1-3, A-1, A-6

LED interface A-9

low density 1-3, A-1, A-6

description 1-3 detailed installation procedure 2-3–2-6 device default settings table 3-2 device selections menu

disconnect 3-12

exiting 3-13

format device 3-12

initial boot 3-12

queue tags 3-12

read write I/O time-out 3-12

restore default setup 3-13

scan for device at boot time 3-12

scan for SCSI logical units 3-12

sync rate 3-11

verify 3-13

width 3-11 device termination

external SCSI device connections 2-20

internal & external SCSI device connections 2-21

internal SCSI device connections 2-19

to both internal connectors 2-22 disconnect option 3-12 display mode

main menu option 3-5 DMA bus master 1-2

IX-1

duplication of SCSI IDs 2-26

electrical characteristics A-2 electromagnetic compliance A-3 Esc

main menu option 3-6 Ext68 channel switch (switch 4) 2-24 external SCSI bus connections

making 2-15–2-17

FDISK /MBR co mmand

removing partition 3-9 features

SYM22801 board 1-2 Flash BIOS 1-1 format device option

low-level formatting 3-12

removing partitions/data 3-9 front panel LED 2-14

global default settings table 3-1 GPIO0_FETCH line

maximum/minimum output A-9

help option

device selections menu 3-13

main menu 3-6 high density connectors

68 pin 1-3, A-1, A-6 Host SCSI ID 3-8

jumper

setting interrupts 2-27 setting peripheral device SCSI IDs 2-26

language option

main menu 3-6 LED cable 2-14 LED connectors J5/J9 A-9 LED Interface A-9 low density connectors

50 pin 1-3, A-1, A-6 low voltage

GPIO0_FETCH line A-9

main menu

adapter boot order option 3-4

additional adapter configuration option 3-5

change adapter status option 3-4

display mode option 3-5

Esc option 3-6

help option 3-6

language option 3-6

mono/color option 3-5

quit option 3-6

NVRAM (Non Volatile Random Access memory) 3-2

Operational Environment A-3

initial boot option 3-12 inserting the host adapter 2-4–2-6 installation procedure

check list 2-28

detailed setup instructions 2-3 Int50 channel switch (switch 1) 2-24 Int68 channel switch (switch 2) 2-24 internal SCSI bus connections

making 2-8–2-15 interrupts

setting 2-27

IX-2 Index

parity

disabling 3-7

PCI bus

high-speed standard local bus 1-3 re-routing to INTA/ 2-27

routing INTB/ 2-27 PCI Interface 1-2, 1-3, A-3 PCI Local Bus Specification 1-3, A-3 peripheral device SCSI IDs

setting with jumpers 2-26 peripheral device terminators 2-19 physical environment A-3 power management device 3-9 power requirements

SYM22801 board A-2

queue tags option 3-12 quick installation procedure 2-3 quit option

main menu 3-6

ribbon cable 2-6

safety characteristics A-3 SCAM support 3-7 scan for device at boot time 3-12 scan for SCSI logical units 3-12 scan order 3-8 SCSI BIOS configuration utility

changing adapter status 3-4 configuring an adapter 3-5 exiting 3-13 mono/color option 3-5 pressing "Ctrl-A" to re-enable controllers 3-3 pressing "Ctrl-C" to invoke 3-2 quit option 3-6 selecting an adapter 3-3

starting 3-2 SCSI bus connections 2-6 SCSI bus termination

SYM22801 board 2-18–2-23 SCSI cables

internal/external connectors 2-7 SCSI IDs 2-25 SCSI Interface 1-2, 1-3, A-6 SCSI Peripherals 2-6 setting interrupts 2-27 Setting SCSI IDs 2-25 signal assignments

PCI interface A-3

SCSI interface A-6, A-8 software

SCSI Device Management System (SDMS) 1-1, A-3 spinup delay 3-9 switches

providing cable detection simulation 2-24 SYM22801 host adapter

40 MHz oscillator 1-4

accessing peripheral devices 2-4

active termination 1-3, A-6

BIOS support 1-1

board characteristics 1-2

channel switches 1-4, 2-23 configuring 3-13 description 1-3 dimensions A-1 electrical characteristics A-2 electromagnetic compliance A-3 features 1-2 installing 2-28 LED interface A-9 NVRAM 3-2 PCI interface 1-3 safety characteristics A-3 SCSI bus termination 2-18 SCSI interface 1-3 SDMS software 1-1, A-3 setting interrupts 2-27 shielded cable connectors 2-7 supporting Ultra SCSI protocols 1-4 thermal, atmospheric characteristics A-3 UL flammability rating A-3

SYM53C876 PCI-Ultra SCSI I/O Processor chip 1-3, A-

sync rate 3-11

technical specifications A-9 termination

erroneous 2-19 external SCSI device connections 2-20 improper assignment of switches 2-8 internal & external SCSI device connections 2-21 internal SCSI device connections 2-19 override switches U1 or U2 2-23 SCSI bus 2-18–2-23 to both internal connectors 2-22

TERMPWR

power requirements A-2 short condition A-2

termination power 1-4 terse setting 3-5 thermal, atmospheric characteristics A-3 TP9 jumper 2-27

U1 or U2 switches

overriding termination 2-23 UL flammability rating

SYM22801 board A-3 Ultra SCSI

allowing faster synchronous data transfers 1-4

cable connections 2-7 upper term channel switch (switch 3) 2-24

Index IX-3

utilities menu

adapter setup option 3-7–3-9 device selections option 3-10–3-13 example 3-6 exiting 3-6

verbose setting 3-5 verify option 3-13 VHDCI connectors

68 pin 1-3, 2-15, A-1

IX-4 Index

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North/South H. H. Tel: 800.526.4812

Tel: 800.638.5988

Florida

Fort Lauderdale H. H. Tel: 305.484.5482 W. E. Tel: 800.568.9953 Orlando H. H. Tel: 407.657.3300 W. E. Tel: 407.740.7450 Tamp a W. E. Tel: 800.395.9953 St. Petersburg H. H. Tel: 813.507.5000

Georgia

Atlanta H. H. Tel: 770.623.4400 W. E. Tel: 800.876.9953

Hawaii

H. H. Tel: 800.851.2282

Idaho

H. H. Tel: 801.266.2022

Illinois

North/South H. H. Tel: 847.797.7300

Tel: 314.291.5350 Chicago W. E. Tel: 800.853.9953

Indiana

Indianapolis H. H. Tel: 317.575.3500 W. E. Tel: 888.358.9953

Iowa

Cedar Rapids H. H. Tel: 319.393.0033

Kansas

Kansas City H. H. Tel: 913.663.7900

Kentucky

Central/Northern/ Western H. H. Tel: 800.984.9503

Tel: 800.767.0329

Tel: 800.829.0146

Louisiana

North/South H. H. Tel: 800.231.0253

Tel: 800.231.5575

Maine

H. H. Tel: 800.272.9255

Maryland

Baltimore H. H. Tel: 410.720.3400 W. E. Tel: 800.863.9953

Massachusetts

Boston H. H. Tel: 978.532.9808 W. E. Tel: 800.444.9953

Michigan

Detroit H. H. Tel: 313.416.5800 W. E. Tel: 888.318.9953 Grandville H. H. Tel: 616.531.0345

Minnesota

Minneapolis H. H. Tel: 612.881.2600 W. E. Tel: 800.860.9953

Mississippi

H. H. Tel: 800.633.2918

Missouri

St. Louis H. H. Tel: 314.291.5350

Montana

H. H. T el: 800.526.1741

Nebraska

H. H. T el: 800.332.4375

Nevada

Las Vegas H. H. T el: 800.528.8471 W . E. Tel: 702.765.7117

New Hampshire

H. H. T el: 800.272.9255

New Jersey

North/South H. H. T el: 201.515.1641

Tel: 609.222.6400 Oradell W . E. Tel: 201.261.3200 Pine Brook W . E. Tel: 800.862.9953

New Mexico

Albuquerque H. H. T el: 505.293.5119

New York

Long Island H. H. T el: 516.434.7400 W . E. Tel: 800.861.9953 Rochester H. H. T el: 716.475.9130 W . E. Tel: 800.319.9953 Syracuse H. H. T el: 315.453.4000

North Carolina

Raleigh H. H. T el: 919.872.0712 W . E. Tel: 800.560.9953

North Dakota

H. H. T el: 800.829.0116

Ohio

Cleveland H. H. T el: 216.498.1100 W . E. Tel: 800.763.9953 Dayton H. H. T el: 614.888.3313 W . E. Tel: 800.763.9953

Oklahoma

Tulsa H. H. T el: 918.459.6000

Oregon

Portland H. H. T el: 503.526.6200 W . E. Tel: 800.879.9953

Pennsylvania

Pittsburgh H. H. Tel: 412.281.4150 Philadelphia H. H. Tel: 800.526.4812 W. E. Tel: 800.871.9953

Rhode Islan d

H. H. 800.272.9255

South Carolina

H. H. Tel: 919.872.0712

South Dakota

H. H. Tel: 800.829.0116

Tennessee

East/West H. H. Tel: 800.241.8182

Tel: 800.633.2918

Texas

Austin H. H. Tel: 512.219.3700 W. E. Tel: 800.365.9953 Dallas H. H. Tel: 214.553.4300 W. E. Tel: 800.955.9953 El Paso H. H. Tel: 800.526.9238 Houston H. H. Tel: 713.781.6100 W. E. Tel: 800.888.9953 Rio Grande Valley H. H. Tel: 210.412.2047

Utah

Draper W. E. Tel: 800.414.4144 Salt Lake City H. H. Tel: 801.365.3800 W. E. Tel: 800.477.9953

Vermont

H. H. Tel: 800.272.9255

Virginia

H. H. Tel: 800.638.5988

Washington

Seattle H. H. Tel: 206.882.7000 W. E. Tel: 800.248.9953

Wisconsin

Milwaukee H. H. Tel: 414.513.1500 W. E. Tel: 800.867.9953

Wyoming

H. H. Tel: 800.332.9326

Sales Offices and Design Resource Centers

LSI Logic Corporation Corporate Headquarters Tel: 408.433.8000 Fax: 408.433.8989

NORTH AMERICA California

Irvine

♦Tel: 714.553.5600

Fax: 714.474.8101 San Diego

Tel: 619.613.8300 Fax: 619.613.8350

Wireless Design Center Tel: 619.350.5560 Fax: 619.350.0171

Silicon Valley

♦Tel: 408.433.8000

Fax: 408.954.3353

Colorado

Boulder Tel: 303.447.3800 Fax: 303.541.0641

Florida

Boca Raton Tel: 561.989.3236 Fax: 561.989.3237

Illinois

Schaumburg

♦Tel: 847.995.1600

Fax: 847.995.1622

Kentucky

Bowling Green Tel: 502.793.0010 Fax: 502.793.0040

Maryland

Bethesda Tel: 301.897.5800 Fax: 301.897.8389

Massachusetts

Waltham

♦Tel: 781.890.0180

Fax: 781.890.6158

Minnesota

Minneapolis

♦Tel: 612.921.8300

Fax: 612.921.8399

New Jersey

Edison

♦Tel: 732.549.4500

Fax: 732.549.4802

New York

New York Tel: 716.223.8820 Fax: 716.223.8822

North Carolina

Raleigh Tel: 919.785.4520 Fax: 919.783.8909

Oregon

Beaverton Tel: 503.645.0589 Fax: 503.645.6612

Texas

Austin Tel: 512.388.7294 Fax: 512.388.4171

Dallas

♦Tel: 972.509.0350

Fax: 972.509.0349 Houston

Tel: 281.379.7800 Fax: 281.379.7818

Washington

Issaquah Tel: 425.837.1733 Fax: 425.837.1734

Canada Ontario

Ottawa

♦Tel: 613.592.1263

Fax: 613.592.3253 Toro nt o

♦Tel: 416.620.7400

Fax: 416.620.5005

Quebec

Montreal

♦Tel: 514.694.2417

Fax: 514.694.2699

INTERNATIONAL Australia

New South Wales

Reptechnic Pty Ltd

♦Tel: 612.9953.9844

Fax: 612.9953.9683

China

Beijing

LSI Logic International Services Inc

Tel: 86.10.6804.2534.40 Fax: 86.10.6804.2521

Denmark

Ballerup

LSI Logic Development Centre

Tel: 45.44.86.55.55 Fax: 45.44.86.55.56

France

Paris

LSI Logic S.A. Immeuble Europa

♦Tel: 33.1.34.63.13.13

Fax: 33.1.34.63.13.19

Germany

Munich

LSI Logic GmbH

♦Tel: 49.89.4.58.33.0

Fax: 49.89.4.58.33.108 Stuttgart

Tel: 49.711.13.96.90 Fax: 49.711.86.61.428

Hong Kong

A VT Industrial Ltd

Tel: 852.2428.0008 Fax: 852.2401.2105

India

Bangalore

LogiCAD India Private Ltd

♦Tel: 91.80.526.2500

Fax: 91.80.338.6591

Israel

Ramat Hasharon

LSI Logic

♦Tel: 972.3.5.480480

Fax: 972.3.5.403747 Netanya

VLSI Development Centre

Tel: 972.9.657190 Fax: 972.9.657194

Italy

Milano

LSI Logic S.P.A.

♦Tel: 39.039.687371

Fax: 39.039.6057867

Japan

Tokyo

LSI Logic K.K.

♦Tel: 81.3.5463.7821

Fax: 81.3.5463.7820 Osaka

♦Tel: 81.6.947.5281

Fax: 81.6.947.5287

Korea

Seoul

LSI Logic Corporation of Korea Ltd

♦Tel: 82.2.528.3400

Fax: 82.2.528.2250

The Netherlands

Eindhoven

LSI Logic Europe Ltd

Tel: 31.40.265.3580 Fax: 31.40.296.2109

Singapore

LSI Logic Pte Ltd

♦Tel: 65.334.9061

Fax: 65.334.4749

Sweden

Stockholm

LSI Logic AB

♦Tel: 46.8.444.15.00

Fax: 46.8.750.66.47

Switzerland

Brugg/Biel

LSI Logic Sulzer AG

Tel: 41.32.536363 Fax: 41.32.536367

Tai wan

Taipei

LSI Logic Asia-Pacific

♦Tel: 886.2.2718.7828

Fax: 886.2.2718.8869

Avnet-Mercuries Corporatio n, Ltd

Tel: 886.2.2503.1111 Fax: 886.2.2503.1449

Jeilin Technology Corporatio n, Ltd

Tel: 886.2.2248.4828 Fax: 886.2.2242.4397

Lumax International Corporatio n, Ltd

Tel: 886.2.2788.3656 Fax: 886.2.2788.3568

LSI SYM22801 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

User’s Guide

Version 2.0

S14017

Contents

Index

Customer Feedback

Figures

Tables

Audience

Preface

Organization

Related Publications

1.1 General Description

1.2 Features

1.2.1 PCI Interface

1.2.2 SCSI Interface

1.2.3 Board Charac teristics

1.3 Interface Descriptions

1.3.1 The PCI Interface

1.3.2 The SCSI Interface

1.3.3 Ultra SCSI

2.1 Quick Installation Procedure

Caution:

Note:

Note:

2.2 Detailed Installation Procedure

2.2.1 Before You Start

2.2.2 Inserting the Host Adapter

Caution:

2.2.3 Connecting the SCSI Peripherals

Important:

2.2.4 Making Internal SCSI Bus Connections

Note:

2.2.5 Making External SCSI Bus Connections

2.3 SCSI Bus Termination

Remember:

Caution:

2.3.1 Internal SCSI Connections

2.3.2 External SCSI Connections

2.3.3 Internal and External SCSI Connections

2.3.4 Internal SCSI Connections for Both Internal Connectors

Caution:

2.3.4.1 Channel Switches

2.3.5 Setting SCSI IDs

Table 2.1 SCSI ID Record

2.4 Setting Interrupts

Table 2.2 Setting Interrupts

2.5 Completing Your Installation

3.1 When to Configure the SYM22801 Host Adapter

Table 3.1 Global Default Settings

Table 3.2 Device Default Settings

3.2 Starting the SCSI BIOS Configuration Utility

Important: This SCSI BIOS Configuration Utility is a powerful tool. If,

3.2.1 Configuration Utility Main Menu

3.2.1.1 Change Adapter Status

3.2.1.2 Adapter Boot Order

3.2.1.3 Additional Adapter Configuration

3.2.1.4 Display Mode

3.2.1.5 Mono/Color

3.2.1.6 Language

3.2.1.7 Help

3.2.1.8 Quit

3.2.1.9 Esc

3.2.2 Utilities Menu

3.2.2.1 Adapter Setup Menu

SCAM Support Off Parity Enabled Host SCSI ID 7 Scan Order Low to High < 0..Max> Removable Med ia Support None CHS Mapping SCSI Plug & P lay Mapping Spinup Delay (sec) 2 Help Restore Defau lt Setup Exit this men u

Note:

Note:

Important:

3.2.3 Device Selections Menu

Note:

3.3 Exiting the SCSI BIOS Configuration Utility

A.1 Physical Environment

A.1.1 Physical Characteristics

A.2 Electrical Characteristics

A.2.1 Thermal, Atmospheric Characteristics