LSI LSI53C140 Ultra2 SCSI bus expander product brief User guide

®

S14044.A

SCSI SCRIPTS™

Processors

PROGRAMMING

GUIDE

October 2000

Version 2.3

ii

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.

LSI Logic products are not intended for use in life-support appliances, devices,

or systems. Use of any LSI Logic product in such applications without written

consent of the appropriate LSI Logic officer is prohibited.

DB15-000159-01, Second Edition (October 2000)

This document describes the LSI Logic Corporation SCSI SCRIPTS

™

Processors and will remain the official reference source for all revisions/releases

of this product until rescinded by an update.

To receive product literature, 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.

Ultra SCSI is the term used by the SCSI Trade Association (STA) to describe

Fast-20 SCSI, as documented in the SCSI-3 Fast-20 Parallel Interface standard,

X3.277-199X.

Ultra2 SCSI is the term used by the SCSI Trade Association (STA) to describe

Fast-40 SCSI, as documented in the SCSI Parallel Interface-2 standard, (SPI-2)

X3710-1142D.

TRADEMARK ACKNOWLEDGMENT

The LSI Logic logo design, NASM, SCRIPTS, LVD Link, and TolerANT are

trademarks or registered trademarks of LSI Logic Corporation. All other brand

and product names may be trademarks of their respective companies.

Preface iii

Preface

This book is the primary reference and programming guide for the

LSI Logic PCI to SCSI I/O Processors. It contains a complete functional

description for the LSI Logic PCI to SCSI I/O Processors and includes

complete physical and electrical specifications for the LSI Logic PCI to

SCSI I/O Processors.

Audience

This manual is written for users who are familiar with the SCSI and PCI

specifications, and have a working knowledge of computer architectures

and programming. It is specifically designed for use with programming

the LSI Logic SCSI SCRIPTS™ processor in the following chip families:

• LSI53C7XX

• LSI53C8XX

• LSI53C10XX (up to the LSI53C1010 and LSI53C1010R)

Organization

This document has the following chapters and appendixes:

• Chapter 1, Using the Programming Guide, introduces the

SCRIPTS processor features and functions, and the parts of the PCI

to SCSI system that are involved in operating the chip.

• Chapter 2, Programming with SCRIPTS, describes the SCRIPTS

processor and programming language in depth, including how

SCRIPTS programs are integrated with “C” code to execute SCSI

commands.

• Chapter 3, The SCSI SCRIPTS Processor Instruction Set,

describes the SCRIPTS processor instruction set, along with detailed

iv Preface

functional descriptions and usage guidelines for all of the instructions

supported.

• Chapter 4, Using the LSI Logic Assembler NASM™, describes

use and operation of the LSI Logic Assembler (NASM).

• Chapter 5, The NASM Output File, describes the LSI Logic

Assembler (NASM) output file.

• Chapter 6, Using the Registers to Control Chip Operations,

contains functional and address information on the

LSI53C7XX/8XX/10XX family chips register set.

• Chapter 7, Integrating SCRIPTS Programs into “C” Language

Drivers, illustrates the relationship between the SCRIPTS program

and the “C” language device driver.

• Chapter 8, Writing Device Drivers with SCRIPTS, addresses

specific kinds of driver applications, with code samples for all

applications discussed.

• Chapter 9, SCRIPTS Programming Topics, addresses specific

kinds of driver applications, with code samples for all applications

discussed.

• Chapter 10, Multithreaded I/O, contains guidelines for writing

SCRIPTS for multithreaded applications.

• Chapter 11, Using the SCRIPTS Processor in Target

Applications, provides guidelines that are specific to using the

SCRIPTS processor in a target device.

• Chapter 12, Debugging the SCRIPTS Processor, provides

information on debugging SCRIPTS programs.

• Chapter 13, New SCRIPTS Processor Features,provides

information on the new 64-bit features of the latest version of this

chip family.

• Appendix A, NASM Error Messages,providesalistofNASMerror

messages.

• Appendix B, Multithreaded SCRIPTS Example,providesexample

SCRIPTS code.

• Appendix C, Glossary of Terms and Abbreviations, provides

definitions of terms and abbreviations.

Preface v

Related Publications

LSI53C770 SCSI I/O Processor with Ultra SCSI Data Manual,

Version 2.0, LSI Logic Corporation, Order Number T18962I

LSI53C810A PCI-SCSI I/O Processor Data Manual, Version 2.0,

LSI Logic Corporation, Order Number T07962I

LSI53C815 PCI-SCSI I/O Processor with Local ROM Interface

Data Manual, Version 2.0, LSI Logic Corporation, Order Number T10962I

LSI53C825A/825AE PCI-SCSI I/O Processor Data Manual, Version 3.0,

LSI Logic Corporation, Order Number T40937I

LSI53C860 PCI-Ultra SCSI I/O Processor Data Manual, Version 2.0,

LSI Logic Corporation, Order Number T09962I

LSI53C875/875E PCI-Ultra SCSI I/O Processor Data Manual,

Version 4.0, LSI Logic Corporation, Order Number T42984I

LSI53C895 PCI to Ultra2 SCSI I/O Processor with LVD Link™ Universal

Transceivers Technical Manual, Version 3.1, LSI Logic Corporation,

Order Number S14030

LSI53C895A PCI to Ultra2 SCSI Controller Technical Manual,

Version 2.2, LSI Logic Corporation, Order Number S14028.B

LSI53C896 PCI to Dual Channel Ultra2 SCSI Multifunction Controller

Technical Manual, Version 3.1, LSI Logic Corporation,

Order Number S14015.B

LSI53C1000 PCI to Ultra3 SCSI Controller Technical Manual,

Version 2.0, LSI Logic Corporation, Order Number S14050

LSI53C1000R PCI to Ultra160 SCSI Controller Technical Manual,

Version 1.0, LSI Logic Corporation, Order Number S14052

LSI53C1010-33 PCI to Dual Channel Ultra3 SCSI Multifunction

Controller Technical Manual, Version 3.1, LSI Logic Corporation,

Order Number S14025.C

LSI53C1010-66 PCI to Dual Channel Ultra3 SCSI Multifunction

Controller Technical Manual, Version 2.0, LSI Logic Corporation,

Order Number S14049

vi Preface

LSI53C1010R PCI to Dual Channel Ultra160 SCSI Multifunction

Controller Technical Manual, Version 1.0, LSI Logic Corporation,

Order Number S14053

Conventions Used in This Manual

The following is a list of notational conventions used throughout

this programming guide:

Notation Example Meaning and Use

square braces

[]

CALL [REL] Address,

[{IF | WHEN} [NOT] CARRY]

Optional items in instruction examples.

courier font

program.exe

Used for code samples, file names,

command line information, prompts, etc.

that appear in body text.

All Caps

JUMP [REL] Address,

[{IF | WHEN} [NOT] CARRY]

Keywords.

Curly braces

{}

SELECT [ATN] {FROM Address |

ID}, [REL] Address

Choose between items enclosed in curly

braces.

{} “...”

SET {ACK|ATN|TARGET|CARRY}

[and {ACK|ATN|TARGET|CARRY}...]

The character enclosed in the curly

braces can be repeated as often as

desired.

|

INTFLY int_value,

[{IF | WHEN} [NOT] CARRY]

OR, select one item from a list.

\

RELATIVE baselabel \

Line continuation.

Preface vii

Revision Record

Revision Date Remarks

2.0 8/96 Initial release.

2.1 6/97 Added chapter on programming multifunction controllers.

2.2 6/00 Miscellaneous updates/format changes.

2.3 10/00 All product names changed from SYM to LSI.

viii Preface

Contents ix

Contents

Chapter 1 Using the Programming Guide

1.1 Product Overview 1-1

1.2 Benefits of Ultra, Ultra2, and Ultra3 SCSI 1-7

1.3 System Overview 1-8

Chapter 2 Programming with SCRIPTS

2.1 The SCSI SCRIPTS Processor 2-1

2.2 SCRIPTS and the SCSI Bus Phases 2-2

2.3 Assembling SCSI SCRIPTS 2-3

2.4 Using SCSI SCRIPTS 2-6

2.4.1 SCRIPTS Data Sizes 2-6

2.4.2 SCSI SCRIPTS Language Elements 2-6

2.4.3 SCSI SCRIPTS Expressions 2-7

2.4.4 SCSI SCRIPTS Keywords 2-7

2.5 Big and Little Endian Byte Addressing 2-8

2.5.1 SCRIPTS Instruction Sequence 2-8

2.5.2 Operating Register Access from Firmware 2-9

2.5.3 Operating Register Access from SCRIPTS

Routines 2-9

2.5.4 User Data Byte Ordering 2-9

Chapter 3 The SCSI SCRIPTS Processor Instruction Set

3.1 Overview of SCRIPTS Instructions 3-1

3.1.1 I/O Instructions 3-1

3.1.2 Memory Move Instructions 3-2

3.1.3 Transfer Control Instructions 3-2

3.1.4 Read/Write Instructions 3-3

3.1.5 Block Move Instructions 3-3

3.1.6 Load and Store Instructions 3-3

xContents

3.2 Instruction Descriptions 3-4

3.2.1 CALL 3-5

3.2.2 CHMOV 3-10

3.2.3 CLEAR 3-14

3.2.4 DISCONNECT 3-16

3.2.5 INT 3-17

3.2.6 INTFLY 3-21

3.2.7 JUMP 3-27

3.2.8 JUMP 64 3-32

3.2.9 LOAD 3-37

3.2.10 LOAD64 3-40

3.2.11 MOVE 3-42

3.2.12 MOVE MEMORY 3-46

3.2.13 MOVE REGISTER 3-48

3.2.14 NOP 3-53

3.2.15 RESELECT 3-54

3.2.16 RETURN 3-58

3.2.17 SELECT 3-62

3.2.18 SET 3-64

3.2.19 STORE 3-66

3.2.20 WAIT DISCONNECT 3-68

3.2.21 WAIT SELECT 3-69

3.2.22 WAIT RESELECT 3-71

3.3 Instruction Examples 3-73

3.3.1 I/O Instruction Example 3-74

3.3.2 Memory Move Instruction Example 3-74

3.3.3 Transfer Control Instruction Example 3-76

3.3.4 Read/Write Instruction Example 3-77

3.3.5 Block Move Instruction Example 3-78

3.3.6 Load/Store Instruction Example 3-79

Chapter 4 Using the LSI Logic Assembler NASM™

4.1 Overview 4-1

4.2 Using NASM 4-2

4.3 Command Line Options 4-3

4.3.1 Architecture 4-3

4.3.2 Binary Cross Reference Values 4-4

Contents xi

4.3.3 Error Listing File 4-4

4.3.4 Listing File 4-4

4.3.5 Output File 4-4

4.3.6 Partial “C” Source 4-4

4.3.7 .BIN Output 4-5

4.3.8 Omit Termination Record 4-5

4.3.9 Verbose Messages 4-5

4.3.10 Patch Offsets 4-6

4.4 Example Assembler Command Lines 4-6

4.5 How NASM Parses SCRIPTS Files 4-6

4.6 Assembler Declarative Keywords 4-7

4.6.1 ABSOLUTE 4-8

4.6.2 ARCH 4-8

4.6.3 ENTRY 4-9

4.6.4 EXTERN 4-9

4.6.5 PASS 4-10

4.6.6 PROC 4-10

4.6.7 RELATIVE 4-11

4.6.8 TABLE 4-12

4.7 Conditional Keywords 4-14

4.7.1 IF 4-14

4.7.2 WHEN 4-14

4.8 Logical Keywords 4-14

4.8.1 NOT 4-15

4.8.2 AND 4-15

4.8.3 OR 4-15

4.9 Flag Fields 4-15

4.9.1 ACK 4-15

4.9.2 ATN 4-15

4.9.3 TARGET 4-16

4.9.4 CARRY 4-16

4.10 Qualifier Keywords 4-16

4.10.1 DSAREL 4-16

4.10.2 FROM 4-16

4.10.3 MASK 4-16

4.10.4 MEMORY 4-17

4.10.5 PTR 4-17

4.10.6 REG 4-17

xii Contents

4.10.7 REL 4-17

4.10.8 TO 4-17

4.10.9 WITH 4-17

4.10.10 NOFLUSH 4-17

4.11 Other Keywords 4-18

4.11.1 Action Keywords 4-18

4.11.2 SCSI Phases 4-18

4.11.3 Register Names 4-18

Chapter 5 The NASM Output File

5.1 NASM Output Overview 5-1

5.2 NASM Output File Examples 5-2

5.2.1 SCRIPTS Array 5-3

5.2.2 External 5-5

5.2.3 Relative 5-7

5.2.4 Entry 5-9

5.2.5 Label Patches 5-9

5.2.6 Absolute 5-10

5.2.7 Termination Record 5-11

Chapter 6 Using the Registers to Control Chip Operations

6.1 Overview 6-1

6.2 SCSI Registers 6-2

6.3 DMA Registers 6-4

6.4 SCRIPTS Registers 6-5

6.5 64-Bit SCRIPTS Selector Registers 6-6

6.6 Interrupt Registers 6-7

6.7 Phase Mismatch Registers 6-8

6.8 Test and Miscellaneous Registers 6-9

6.9 General Purpose Registers 6-11

6.10 Register Initialization 6-11

Chapter 7 Integrating SCRIPTS Programs into “C” Language Drivers

7.1 Initializing the SCRIPTS Processor 7-1

7.1.1 Reset 7-3

7.1.2 Table Indirect Operations 7-3

7.2 Patching 7-7

Contents xiii

7.2.1 EXTERN Buffers 7-8

7.2.2 RELATIVE Buffers 7-8

7.2.3 ABSOLUTE Values 7-9

7.2.4 Buffer Addresses 7-9

7.2.5 Byte Counts 7-9

7.2.6 Absolute JUMP/CALL Addresses 7-10

7.2.7 Entry Locations 7-10

7.2.8 Self-Modifying SCRIPTS Code 7-11

7.3 Running a SCRIPTS Program 7-12

Chapter 8 Writing Device Drivers with SCRIPTS

8.1 Device Driver Overview 8-1

8.2 Command Block 8-4

8.3 Power Up Example 8-4

8.4 I/O Request Process 8-5

8.5 How to Write a Device Driver with SCRIPTS 8-6

8.6 Table Indirect Addressing 8-7

8.6.1 Block Move Instructions 8-8

8.6.2 Select/Reselect Instructions 8-9

8.6.3 Defining a Table 8-10

8.7 Relative Addressing 8-11

Chapter 9 SCRIPTS Programming Topics

9.1 Scatter/Gather Operations 9-1

9.2 Loopback Mode 9-4

9.2.1 Loopback Example – Selection 9-5

9.3 Byte Recovery on Target Disconnect 9-9

9.3.1 Saving the Processor State 9-10

9.3.2 Updating the SCRIPTS Program 9-13

9.3.3 Cleaning Up 9-13

9.3.4 Example Byte Recovery Code 9-13

9.4 Synchronous Negotiation and Transfer 9-18

9.5 Interrupt Handling 9-19

9.5.1 Polling and Hardware Interrupts 9-19

9.5.2 Registers 9-20

9.5.3 Fatal vs. Nonfatal Interrupts 9-22

9.5.4 Masking 9-23

xiv Contents

9.5.5 Stacked Interrupts 9-24

9.5.6 Halting in an Orderly Fashion 9-24

9.5.7 Sample Interrupt Service Routine 9-25

9.6 Migrating Existing Software to Ultra, Ultra2, and

Ultra3 SCSI 9-26

9.6.1 Clock Divider Bits 9-27

9.6.2 Ultra Enable Bit 9-28

9.6.3 Loading the New Register Values 9-28

9.6.4 Negotiating Synchronous Transfers 9-28

9.6.5 Using the SCSI Clock Doubler 9-29

9.6.6 Using the SCSI Clock Quadrupler 9-29

9.7 Using the SCRIPTS RAM 9-30

9.7.1 Loading SCRIPTS RAM 9-30

9.7.2 Programming Techniques when Using

SCRIPTS RAM 9-31

9.7.3 Patching Internal and External SCRIPTS

Programs 9-37

Chapter 10 Multithreaded I/O

10.1 Overview 10-1

10.2 Multithreaded Operations Flow 10-2

10.3 SCRIPTS Areas 10-4

10.4 Multithreaded SCRIPTS Example 10-4

10.5 Using the SIGP Bit to Abort an Instruction 10-10

10.6 I/O Completion 10-12

Chapter 11 Using the SCRIPTS Processor in Target Applications

11.1 SCSI and Target SCRIPTS Protocol 11-1

11.2 Registers Used for Target Operation 11-3

11.3 Using SCRIPTS for Target Operation 11-3

11.3.1 Sample Target Operation SCRIPTS Program 11-4

11.4 Synchronous Negotiation by a Target Device 11-16

Chapter 12 Debugging the SCRIPTS Processor

12.1 Chip Debugging Guidelines 12-1

12.2 Register Used for Debugging 12-3

Contents xv

Chapter 13 New SCRIPTS Processor Features

13.1 Improved FIFO Flushing 13-1

13.2 Larger FIFO 13-2

13.3 New ISTAT Registers 13-2

13.4 New Scratch Registers 13-2

13.5 New Load/Store Feature 13-2

13.6 Phase Mismatch Handling 13-3

13.6.1 Control Bits 13-3

13.6.2 Registers 13-4

13.6.3 SCRIPTS Example 13-5

13.7 64-Bit SCRIPTS Addressing 13-6

13.7.1 Control Bits 13-6

13.7.2 Block Move 13-7

13.7.3 Direct Block Move 13-7

13.7.4 Mode 0 Table Indirect Block Move 13-7

13.7.5 Mode 1 Table Indirect Block Move 13-8

13.7.6 Table Indirect Block Move Summary 13-10

13.7.7 LSI53C1010/LSI53C1010R 13-10

Appendix A NASM Error Messages

Appendix B Multithreaded SCRIPTS Example

Appendix C Glossary of Terms and Abbreviations

Index

Customer Feedback

Figures

1.1 Single Channel Block Diagram 1-6

1.2 Dual Channel Block Diagram 1-6

1.3 Typical SCRIPTS Operation 1-9

2.1 Overview of Assembling SCSI SCRIPTS 2-5

xvi Contents

3.1 CALL Format 3-6

3.2 Use of the Mask Keyword 3-9

3.3 CHMOV Format 3-11

3.4 CLEAR Format 3-15

3.5 DISCONNECT Format 3-16

3.6 INT Format 3-18

3.7 INTFLY Format 3-23

3.8 JUMP Format 3-28

3.9 JUMP 64 Format 3-34

3.10 LOAD Format 3-38

3.11 MOVE Format 3-43

3.12 MOVE MEMORY Format 3-47

3.13 MOVE REGISTER Format 3-50

3.14 NOP Format 3-54

3.15 RESELECT Format 3-55

3.16 Reselection Instruction 3-57

3.17 RETURN Format 3-59

3.18 SELECT Format 3-63

3.19 SET Format 3-65

3.20 STORE Format 3-67

3.21 WAIT DISCONNECT Format 3-69

3.22 WAIT SELECT Format 3-70

3.23 WAIT RESELECT Format 3-71

3.24 WAIT RESELECT and the SIGP Bit 3-73

3.25 I/O Instruction Type 3-74

3.26 Memory Move Instruction Part 1 3-75

3.27 Memory Move Instruction Part 2 3-76

3.28 Transfer Control Instruction 3-77

3.29 Read/Write Instruction Example 3-78

3.30 Block Move Instruction 3-79

3.31 Load/Store Instruction 3-80

5.1 Sample SCRIPTS Program 5-2

7.1 Accessing I/O Mapped Registers 7-1

7.2 Resetting the SCRIPTS Processor 7-3

7.3 SCRIPTS Table Declaration 7-4

7.4 Creating Table Indirect Entry Offsets 7-4

7.5 Data Structure and Type Definition 7-5

7.6 Data Structure and Type Definition 7-6

Contents xvii

7.7 Creating Buffers 7-7

7.8 Self-Modifying Code 7-11

7.9 General.ss SCRIPTS Source File 7-12

7.10 General.out NASM Output File 7-16

8.1 The Role of the SCSI Device Drivers 8-2

8.2 SCSI Device Driver Layers 8-3

8.3 Power Up Examples 8-5

8.4 I/O Operation 8-6

8.5 Table Indirect Addressing 8-10

8.6 Table Definitions 8-11

9.1 Scatter/Gather Operation 9-2

9.2 Alternate Scatter/Gather Operation 9-4

9.3 Loopback Mode 9-6

9.4 Target Operation 9-7

9.5 Byte Transfer 9-8

9.6 Loopback Mode Selection Procedure 9-9

9.7 SCRIPTS Sequence to Move Data 9-14

9.8 Example Function for Handling DATA IN Phase

Mismatch Interrupts 9-15

9.9 Example Function for Handling DATA OUT Phase

Mismatch Interrupts 9-16

9.10 SELECT FROM Example Code 9-19

9.11 Storing Data Structures in SCRIPTS RAM 9-31

9.12 External Script (SCRIPTS.LIS file) 9-33

9.13 External Script (SCRIPTS.OUT file) 9-34

9.14 Internal Script (SCRIPTS.LIS file) 9-34

9.15 Internal SCRIPTS Program (SCRIPTS.OUT file) 9-36

9.16 Patching Routine 9-38

10.1 Multithreaded System Operation 10-2

10.2 Multithreaded SCRIPTS Operational Flow 10-3

10.3 Multithreaded SCRIPTS Example Step 1 10-5

10.4 Multithreaded SCRIPTS Example Step 2 10-6

10.5 Multithreaded SCRIPTS Example Step 3 10-7

10.6 Multithreaded SCRIPTS Example Step 6 10-7

10.7 Multithreaded SCRIPTS Example Step 10 10-9

10.8 Multithreaded SCRIPTS Example Step 11 10-9

10.9 Multithreaded SCRIPTS Example Step 13 10-10

10.10 Sample SIGP Code 10-10

xviii Contents

11.1 SCRIPTS Source Code–Comments 11-4

11.2 SCRIPTS Source Code–ABSOLUTE Declarations 11-5

11.3 SCRIPTS Source Code–EXTERN Variables 11-5

11.4 SCRIPTS Source Code–TABLE 11-6

11.5 SCRIPTS Source Code–ENTRY Declarations 11-7

11.6 SCRIPTS Source Code–wait_select Label 11-7

11.7 SCRIPTS Source Code–CDB Functions 11-8

11.8 SCRIPTS Source Code–Message Out Phase 11-8

11.9 SCRIPTS Source Code–Extended Message 11-9

11.10 SCRIPTS Source Code–Synchronous Negotiation 11-9

11.11 SCRIPTS Source Code–Wide Negotiation 11-9

11.12 SCRIPTS Source Code–Return Negotiation 11-9

11.13 SCRIPTS Source Code–Recovery Message 11-10

11.14 SCRIPTS Source Code–Test Unit Ready 11-10

11.15 SCRIPTS Source Code–stopped_busy_tur Command 11-10

11.16 SCRIPTS Source Code–Request Sense 11-11

11.17 SCRIPTS Source Code–Read Label 11-12

11.18 SCRIPTS Source Code–read_disconnect Label 11-12

11.19 SCRIPTS Source Code–read_reconnect Label 11-13

11.20 SCRIPTS Source Code–Write 11-13

11.21 SCRIPTS Source Code–write_disconnect Label 11-13

11.22 SCRIPTS Source Code–write_reconnect Label 11-14

11.23 SCRIPTS Source Code–reserve_unit Label 11-14

11.24 SCRIPTS Source Code–release_unit Command 11-14

11.25 SCRIPTS Source Code–abort Label 11-15

11.26 SCRIPTS Source Code–stopped_busy_wait_select

Command 11-15

13.1 64-Bit Direct Block Move Format 13-7

13.2 Index Mode 1 Table Entry Format 13-9

Tables

1.1 Features and Functions of LSI53C7XX/8XX/10XX

Family Chips (part 1) 1-2

1.2 Features and Functions of LSI53C7XX/8XX/10XX

Family Chips (part 2) 1-3

2.1 SCSI Protocol and SCRIPTS Instructions 2-2

2.2 Data Sizes 2-6

2.3 SCSI SCRIPTS Language Elements 2-6

Contents xix

2.4 Arithmetic Operators 2-7

2.5 Bitwise Operators 2-7

2.6 Big and Little Endian Byte Addressing 2-8

3.1 Opcode Bit Options 3-2

3.2 Read/Write Instructions 3-3

3.3 SCRIPTS Instructions Set 3-4

3.4 SCSI Phase Bit Values (CALL Format) 3-7

3.5 SCSI Phase Bit Values (CHMOV Format) 3-12

3.6 SCSI Phase Bit Values (INT Format) 3-18

3.7 SCSI Phase Bit Values (INTFLY Format) 3-23

3.8 SCSI Phase Bit Values (JUMP Format) 3-29

3.9 SCSI Phase Bit Values (JUMP 64 Format) 3-35

3.10 Register Address Field Definitions (LOAD Format) 3-39

3.11 LOAD64 Format 3-41

3.12 Register Address Field Definitions (LOAD64 Format) 3-42

3.13 SCSI Phase Bit Values (MOVE Format) 3-44

3.14 SCSI Phase Bit Values (RETURN Format) 3-59

3.15 Low Order Bit Options 3-68

4.1 Keywords 4-7

5.1 Relationship Between Entry and PROC Statements

and Output File 5-5

6.1 SCSI Registers 6-2

6.2 DMA Registers 6-5

6.3 SCRIPTS Registers 6-6

6.4 64-Bit Selector Registers 6-6

6.5 Interrupt Registers 6-7

6.6 Phase Mismatch Registers 6-9

6.7 Test and Miscellaneous Registers 6-10

6.8 General Purpose Registers 6-11

6.9 LSI53C815/810A/860 Startup Bits 6-12

6.10 LSI53C825A/875/876/885/895/895A/896/10XX

Startup Bits 6-14

8.1 Data Structure 8-9

8.2 I/O Data Structure 8-9

11.1 SCSI Protocol and Target SCRIPTS Instructions 11-2

11.2 Register Bits Used for Target Operation 11-3

13.1 ISTAT1 Register 13-2

13.2 Index Mapping 13-8

xx Contents
13.3 Table Indirect BMOV Upper 32-Bit Address Locations 13-10
A.1 NASM Error Messages A-1
A.2 Fatal Errors A-13
A.3 Warnings A-14

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