Omega Products OMB-PER-488 Installation Manual

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Personal488 PC/IEEE 488 Controller

General Table of Contents

General Table of Contents....................................................................................... v

Detailed Table of Contents....................................................................................vii

Introduction to this Manual ...............................................................................xvii

SECTION I: HARDWARE GUIDES ......................................................................I-1

1. Overview ............................................................................................................. I-3

2. Personal488 (with GP488B): 8-bit DMA Interface Board .....................................I-8

3. Personal488/AT: 16-bit DMA Interface Board .......................................................I-13

4. Personal488/NB: 170 kByte Interface Module for Notebook, Laptop, & Desktop PCs ...I-17

5. Personal488/MM: 330 kByte Interface Board........................................................I-18

6. Personal488/CARD: Type II PCMCIA Interface Card for Notebook & Desktop PCs ...I-22

SECTION II: SOFTWARE GUIDES.................................................................. II-31

7. Overview ......................................................................................................... II-33

8. Driver488/DRV: All Languages Compatible ........................................................ II-34

9. Driver488/SUB: C Language, Pascal & QuickBasic Compatible ............................ II-133

10. Driver488/W31: C Language & Visual Basic Compatible...................................... II-191

11. Driver488/W95: (Software Revisions Pending) ................................................... II-257

12. Driver488/WNT: (Software Revisions Pending) .................................................. II-258

SECTION III: COMMAND REFERENCES ..................................................III-259

13. Overview ......................................................................................................III-261

14. Command Summaries ...............................................................................III-262

15. Command References ...............................................................................III-282

SECTION IV: TROUBLESHOOTING.............................................................. IV-353

16. Overview ...................................................................................................... IV-355

17. Radio Interference Problems.................................................................. IV-356

18. Troubleshooting Checklists..................................................................... IV-357

19. Error Messages ........................................................................................... IV-361

SECTION V: APPENDIX .....................................................................................V-367

SECTION VI: INDEX.......................................................................................... VI-375

Personal488 User’s Manual, Rev. 3.0 v

vi Personal488 User’s Manual, Rev. 3.0

Personal488 PC/IEEE 488 Controller

Detailed Table of Contents

FCC Radio Frequency Interference Statement .......................................................................ii

Warranty..................................................................................................................................... iii

Limitation of Liability.............................................................................................................. iii

Copyright Notice........................................................................................................................ iii

Trademark Notice ..................................................................................................................... iii

Quality Notice............................................................................................................................ iii

General Table of Contents....................................................................................... v

Detailed Table of Contents....................................................................................vii

Introduction to this Manual ...............................................................................xvii

About this Manual ..................................................................................................................xvii

How to Use this Manual .........................................................................................................xvii

Header Files & Command References ..................................................................................xvii

SECTION I: HARDWARE GUIDES .........................................................................I-1

1. Overview ...........................................................................................................I-3

Introduction...............................................................................................................................I-3

IEEE 488.2 Interface Boards ...................................................................................................I-4

Driver488 Software Interface ..................................................................................................I-4

Interface & Interface Board Specifications..........................................................................I-6

IEEE 488.1-1987 Interface............................................................................................................ I-6

IEEE 488.2-1987 Interface............................................................................................................ I-6

GP488B Interface Board ...............................................................................................................I-6

AT488 Interface Board .................................................................................................................. I-6

MP488 Interface Board .................................................................................................................I-6

MP488CT Interface Board ............................................................................................................I-7

GP488/2 Interface Board............................................................................................................... I-7

GP488/MM Interface Board .......................................................................................................... I-7

NB488 Interface Module ...............................................................................................................I-7

PCMCIA Interface Card................................................................................................................ I-7

2. Personal488 (with GP488B) ..........................................................................I-8

The Package...............................................................................................................................I-8

Hardware Installation (for PC/XT/AT)..................................................................................I-8

Installation & Configuration of the Interface Card..................................................................... I-8

Default Settings ............................................................................................................................. I-9

I/O Base Address Selection ...........................................................................................................I-9

Interrupt Selection ......................................................................................................................I-10

DMA Channel Selection ..............................................................................................................I-10

Wait State Configuration ............................................................................................................I-11

Internal Clock Selection .............................................................................................................. I-11

Board Installation........................................................................................................................ I-11

3. Personal488/AT ..............................................................................................I-13

The Package.............................................................................................................................I-13

Hardware Installation (for PC/XT/AT)................................................................................I-13

Personal488 User’s Manual, Rev. 3.0 vii

Installation & Configuration of the Interface Card .................................................................. I-13

Default Settings........................................................................................................................... I-13

I/O Base Address Selection......................................................................................................... I-13

Interrupt Selection...................................................................................................................... I-14

DMA Channel Selection.............................................................................................................. I-15

Board Installation ....................................................................................................................... I-15

4. Personal488/NB ............................................................................................. I-17

The Package ............................................................................................................................ I-17

Hardware Installation (for Notebook, Laptop, & Desktop PCs) ..................................... I-17

5. Personal488/MM............................................................................................ I-18

The Package ............................................................................................................................ I-18

Hardware Installation (for PC/XT/AT) ............................................................................... I-18

Installation & Configuration of the Interface Card .................................................................. I-18

Default Settings........................................................................................................................... I-18

I/O Base Address Selection......................................................................................................... I-19

Interrupt Selection...................................................................................................................... I-20

DMA Channel Selection.............................................................................................................. I-20

Internal Clock Selection.............................................................................................................. I-21

Board Installation ....................................................................................................................... I-21

6. Personal488/CARD ....................................................................................... I-22

The Package ............................................................................................................................ I-22

Introduction ............................................................................................................................ I-22

Hardware Installation (for Notebook & Desktop PCs)..................................................... I-23

Interfaces & Connectors ............................................................................................................. I-23

Interface Cable Connection ........................................................................................................ I-23

Installation into a PC.................................................................................................................. I-24

Interface Cable & IEEE 488 Accessories ................................................................................... I-24

Software Installation............................................................................................................. I-24

Initialization Software ................................................................................................................ I-24

Configuration Software............................................................................................................... I-27

Functionality........................................................................................................................... I-29

SECTION II: SOFTWARE GUIDES ....................................................................II-31

7. Overview........................................................................................................II-33

8. Driver488/DRV ............................................................................................. II-34

8A. Introduction............................................................................................ II-34

8B. Installation & Configuration ..............................................................II-35

Before You Get Started .........................................................................................................II-35

Making Backup Disk Copies................................................................................................II-36

Driver Installation ................................................................................................................II-36

Selective Installation of Support files ....................................................................................... II-36

Driver Installation to Disk ........................................................................................................ II-37

Configuration Utility ............................................................................................................II-38

Interfaces .................................................................................................................................... II-38

External Devices ........................................................................................................................II-38

Opening the Configuration Utility............................................................................................II-38

Configuration of IEEE 488 Interfaces ................................................................................II-39

Configuration of Serial Interfaces .....................................................................................II-41

Configuration of IEEE 488 External Devices ....................................................................II-42

Multiple Interface Management..........................................................................................II-43

8C. External Device Interfacing................................................................ II-45

Introduction ...........................................................................................................................II-45

Character Command Language (CCL) ..............................................................................II-45

DOS Devices............................................................................................................................II-46

Configuration of Named Devices ........................................................................................II-46

viii Personal488 User’s Manual, Rev. 3.0

Use of External Devices ........................................................................................................II-47

Direct I/O with DOS Devices................................................................................................II-47

Extensions For Multiple Interfaces ....................................................................................II-48

Duplicate Device Names ............................................................................................................II-48

Access of Multiple Interfaces .....................................................................................................II-48

Example.......................................................................................................................................II-49

8D. Getting Started ...................................................................................... II-49

Introduction...........................................................................................................................II-49

Keyboard Controller Program............................................................................................. II-50

Direct Control from DOS Using CCL .................................................................................II-51

8E. Microsoft C.............................................................................................. II-53

Use of the Character Command Language ....................................................................... II-53

Initialization of the System .................................................................................................II-53

Configuration of the 195 DMM ............................................................................................ II-56

Taking Readings ...................................................................................................................II-56

Buffer Transfers ....................................................................................................................II-56

Interrupt Handling............................................................................................................... II-57

IEEEIO.C ................................................................................................................................II-59

CRITERR.ASM (Microsoft C & Turbo C) ...........................................................................II-61

Sample Program.................................................................................................................... II-62

8F. Microsoft Fortran .................................................................................. II-63

Sample Program.................................................................................................................... II-63

8G. QuickBASIC............................................................................................ II-64

Use of the Character Command Language ....................................................................... II-64

Initialization of the System .................................................................................................II-64

Configuration of the 195 DMM ............................................................................................ II-66

Taking Readings ...................................................................................................................II-66

Buffer Transfers ....................................................................................................................II-67

BASIC VARPTR & SADDR................................................................................................... II-68

Interrupt Handling............................................................................................................... II-68

Sample Program.................................................................................................................... II-70

8H. Turbo C.................................................................................................... II-71

Use of the Character Command Language ....................................................................... II-71

Initialization of the System .................................................................................................II-72

Configuration of the 195 DMM ............................................................................................ II-74

Taking Readings ...................................................................................................................II-74

Buffer Transfers ....................................................................................................................II-75

Interrupt Handling............................................................................................................... II-76

IEEEIO.C ................................................................................................................................II-78

CRITERR.ASM (Microsoft C & Turbo C) ...........................................................................II-80

Sample Program.................................................................................................................... II-80

8I. Turbo Pascal............................................................................................ II-82

Use of Character Command Language..............................................................................II-82

Initialization of the System .................................................................................................II-83

Configuration of the 195 DMM ............................................................................................ II-84

Taking Readings ...................................................................................................................II-85

Buffer Transfers ....................................................................................................................II-85

Interrupt Handling............................................................................................................... II-86

Sample Program.................................................................................................................... II-88

8J. Spreadsheets........................................................................................... II-90

Use of Direct DOS I/O Devices ............................................................................................. II-90

Initialization of the System .................................................................................................II-90

Configuration of the 195 DMM ............................................................................................ II-91

Taking Readings ...................................................................................................................II-92

Interrupt Handling............................................................................................................... II-92

Personal488 User’s Manual, Rev. 3.0 ix

8K. Other Languages ...................................................................................II-96

Introduction ...........................................................................................................................II-96

Finding Addresses .................................................................................................................II-97

Garbage Collection ..................................................................................................................... II-97

Memory Models ..........................................................................................................................II-97

Calling Protocols......................................................................................................................... II-99

Opening & Closing the Driver ...........................................................................................II-100

I/O Control (IOCTL) Communication...............................................................................II-100

IOCTL Get & Set Device Data ................................................................................................II-100

IOCTL Read & Write ...............................................................................................................II-101

Data & Command Communication ..................................................................................II-102

ARM Condition Detection...................................................................................................II-102

Sample Program..................................................................................................................II-102

8L. Language-Specific Information........................................................II-104

Aztec C...................................................................................................................................II-104

Use of Character Command Language................................................................................... II-104

CRITERR.C (for Aztec C)......................................................................................................... II-105

GW-BASIC (for GW-BASIC or Interpreted BASIC) ........................................................II-105

Use of Direct DOS I/O Devices ................................................................................................ II-105

BASIC VARPTR & SADDR ..................................................................................................... II-105

GET & PUT (for GW-BASIC only) .......................................................................................... II-106

JPI TopSpeed Modula-2 .....................................................................................................II-106

Use of Direct DOS I/O Devices ................................................................................................ II-106

Logitech Modula-2...............................................................................................................II-106

Use of Direct DOS I/O Devices ................................................................................................ II-106

True Basic.............................................................................................................................II-107

Use of Character Command Language................................................................................... II-107

IEEEIO.TRU ............................................................................................................................II-107

TOOLKIT.LIB ..........................................................................................................................II-107

Turbo Basic ..........................................................................................................................II-108

Use of Character Command Language................................................................................... II-108

8M. Data Transfers ..................................................................................... II-108

Terminators..........................................................................................................................II-108

End-Of-Line (EOL) Terminators............................................................................................. II-108

TERM Terminators .................................................................................................................. II-112

Direct I/O & Buffered I/O....................................................................................................II-113

Direct Bus OUTPUT ................................................................................................................II-113

Direct Bus ENTER................................................................................................................... II-113

Buffered I/O .............................................................................................................................. II-114

Asynchronous Transfers.....................................................................................................II-115

8N. Operating Modes .................................................................................II-115

Introduction .........................................................................................................................II-116

Operating Mode Transitions..............................................................................................II-116

System Controller Mode......................................................................................................II-117

System Controller, Not Active Controller Mode ..............................................................II-117

Not System Controller Mode ..............................................................................................II-119

Active Controller, Not System Controller Mode ..............................................................II-119

8O. Utility Programs .................................................................................. II-120

Printer & Serial Redirection .............................................................................................II-120

Removal & Reinstallation..................................................................................................II-122

MARKDRVR & REMDRVR..................................................................................................... II-122

Moving Files from an IEEE 488 (HP-IB) Controller to a PC.........................................II-123

PRNTEMUL Files .................................................................................................................... II-123

Configuration of the IEEE Interface for PRNTEMUL ..........................................................II-123

Running PRNTEMUL.............................................................................................................. II-124

Data Transfer ...........................................................................................................................II-124

x Personal488 User’s Manual, Rev. 3.0

8P. Command Descriptions...................................................................... II-124

Introduction.........................................................................................................................II-124

Format ..................................................................................................................................II-125

Syntax........................................................................................................................................II-125

Response....................................................................................................................................II-127

Mode ..........................................................................................................................................II-127

Bus States .................................................................................................................................II-127

Examples ...................................................................................................................................II-131

Data Types............................................................................................................................II-131

CCL Reserved Words ...........................................................................................................II-132

List of Reserved Words............................................................................................................II-132

8Q. Command Reference .......................................................................... II-132

9. Driver488/SUB ........................................................................................... II-133

9A. Introduction ......................................................................................... II-133

9B. Installation & Configuration ............................................................ II-134

Before You Get Started ....................................................................................................... II-134

Making Backup Disk Copies.............................................................................................. II-135

Driver Installation.............................................................................................................. II-135

Configuration Utility..........................................................................................................II-135

Interfaces...................................................................................................................................II-136

External Devices.......................................................................................................................II-136

Opening the Configuration Utility ..........................................................................................II-136

Configuration of IEEE 488 Interfaces.............................................................................. II-136

Configuration of Serial Interfaces ................................................................................... II-139

Configuration of IEEE 488 External Devices..................................................................II-140

9C. External Device Interfacing ............................................................. II-141

Introduction.........................................................................................................................II-141

Subroutine Calls .......................................................................................................................II-142

Configuration of Named Devices ...................................................................................... II-142

Use of External Devices ......................................................................................................II-143

Extensions for Multiple Interfaces ...................................................................................II-144

Duplicate Device Names ..........................................................................................................II-144

Access of Multiple Interfaces ...................................................................................................II-144

Example.....................................................................................................................................II-145

9D. Getting Started .................................................................................... II-145

Introduction.........................................................................................................................II-145

C Language ..........................................................................................................................II-145

Required Headers .....................................................................................................................II-146

Required Libraries....................................................................................................................II-146

QuickBASIC .........................................................................................................................II-148

Required Definition File...........................................................................................................II-149

Required Libraries....................................................................................................................II-149

Pascal.................................................................................................................................... II-149

Required Libraries....................................................................................................................II-149

9E. C Languages ........................................................................................ II-150

Accessing from a C Program .............................................................................................II-150

Establishing Communications..........................................................................................II-151

Confirming Communication.............................................................................................. II-152

Setting Up Event Handling ...............................................................................................II-152

Reading Driver Status........................................................................................................ II-152

External Device Initialization .......................................................................................... II-153

Interrupt Handling............................................................................................................. II-153

Basic Data Acquisition....................................................................................................... II-154

Block Data Acquisition ......................................................................................................II-154

Sample Program.................................................................................................................. II-155

Personal488 User’s Manual, Rev. 3.0 xi

Command Summary............................................................................................................II-158

9F. QuickBASIC .......................................................................................... II-159

Accessing from a QuickBASIC Program..........................................................................II-159

Establishing Communications ..........................................................................................II-159

Confirming Communications ............................................................................................II-160

Setting Up Event Handling................................................................................................II-160

Reading Driver Status........................................................................................................II-161

External Device Initialization...........................................................................................II-161

Interrupt Handling .............................................................................................................II-162

Basic Data Acquisition.......................................................................................................II-162

Block Data Acquisition ......................................................................................................II-162

Sample Program..................................................................................................................II-163

Command Summary............................................................................................................II-166

9G. Pascal .....................................................................................................II-166

Accessing from a Pascal Program ....................................................................................II-166

Establishing Communications ..........................................................................................II-167

Confirming Communication..............................................................................................II-168

Setting Up Event Handling................................................................................................II-168

Reading Driver Status........................................................................................................II-168

External Device Initialization...........................................................................................II-169

Interrupt Handling .............................................................................................................II-169

Basic Data Acquisition.......................................................................................................II-170

Block Data Acquisition ......................................................................................................II-170

Sample Program..................................................................................................................II-171

Command Summary............................................................................................................II-174

9H. Data Transfers .....................................................................................II-175

Terminators..........................................................................................................................II-175

TERM Terminators .................................................................................................................. II-175

Data Input and Output ......................................................................................................II-176

Asynchronous Transfers.....................................................................................................II-177

9I. Operating Modes...................................................................................II-177

Introduction .........................................................................................................................II-177

Operating Mode Transitions..............................................................................................II-178

System Controller Mode......................................................................................................II-179

System Controller, Not Active Controller Mode ..............................................................II-179

Not System Controller Mode ..............................................................................................II-181

Active Controller, Not System Controller Mode ..............................................................II-181

9J. Utility Programs................................................................................... II-182

Printer & Serial Redirection .............................................................................................II-182

Removal & Reinstallation..................................................................................................II-184

MARKDRVR & REMDRVR..................................................................................................... II-184

Moving Files from an IEEE 488 (HP-IB) Controller to a PC.........................................II-185

PRNTEMUL Files .................................................................................................................... II-185

Configuration of the IEEE Interface for PRNTEMUL ..........................................................II-185

Running PRNTEMUL.............................................................................................................. II-185

Data Transfer ...........................................................................................................................II-186

9K. Command Descriptions......................................................................II-186

Introduction .........................................................................................................................II-186

Format...................................................................................................................................II-187

Syntax .......................................................................................................................................II-187

Returns .....................................................................................................................................II-187

Mode..........................................................................................................................................II-187

Bus States ................................................................................................................................. II-187

Examples .................................................................................................................................. II-189

Data Types ............................................................................................................................II-189

xii Personal488 User’s Manual, Rev. 3.0

Arm Condition Bit Masks.........................................................................................................II-189

Control Line Bit Masks ............................................................................................................II-189

Terminator Structures .............................................................................................................II-189

Status Structure .......................................................................................................................II-190

Completion Code Bit Masks.....................................................................................................II-190

Miscellaneous Constants..........................................................................................................II-190

9L. Command Reference........................................................................... II-190

10. Driver488/W31 .......................................................................................... II-191

10A. Introduction ....................................................................................... II-191

10B. Installation & Configuration .......................................................... II-192

Before You Get Started ....................................................................................................... II-192

Making Backup Disk Copies.............................................................................................. II-193

Driver Installation.............................................................................................................. II-193

Enhanced Mode DMA Transfers..............................................................................................II-194

Configuration Utility..........................................................................................................II-195

Interfaces...................................................................................................................................II-195

External Devices.......................................................................................................................II-195

Opening the Configuration Utility ..........................................................................................II-195

Configuration of IEEE 488 Interfaces.............................................................................. II-196

Configuration of IEEE 488 External Devices..................................................................II-198

Modification of the Initialization File.............................................................................II-199

Driver Core Sections.................................................................................................................II-200

10C. External Device Interfacing ........................................................... II-202

Introduction.........................................................................................................................II-202

Subroutine Calls .......................................................................................................................II-202

Configuration of Named Devices ...................................................................................... II-202

Use of External Devices ......................................................................................................II-204

Extensions For Multiple Interfaces ..................................................................................II-204

Duplicate Device Names ..........................................................................................................II-205

Access of Multiple Interfaces ...................................................................................................II-205

Example.....................................................................................................................................II-205

10D. Getting Started .................................................................................. II-205

Introduction.........................................................................................................................II-206

C Languages..............................................................................................................................II-206

Visual Basic...............................................................................................................................II-206

C Languages......................................................................................................................... II-206

Required Headers .....................................................................................................................II-206

Required Libraries....................................................................................................................II-207

Visual Basic ......................................................................................................................... II-207

Required Files ...........................................................................................................................II-207

10E. C Languages ...................................................................................... II-208

Accessing from a Windows Program ................................................................................ II-208

Opening & Closing the Driver .................................................................................................II-208

Establishing Communications..........................................................................................II-209

Confirming Communications ............................................................................................ II-211

IEEE 488 Event Message..................................................................................................... II-211

Reading Driver Status........................................................................................................ II-213

External Device Initialization .......................................................................................... II-214

Basic Data Acquisition....................................................................................................... II-214

Block Data Acquisition ......................................................................................................II-215

Sample Programs................................................................................................................II-216

Data Acquisition Sample Programs.........................................................................................II-216

IEEE 488 Event Message Sample Programs ..........................................................................II-224

Command Summary ...........................................................................................................II-231

10F. Visual Basic......................................................................................... II-232

Personal488 User’s Manual, Rev. 3.0 xiii

Accessing from a Windows Program ................................................................................II-232

Opening & Closing the Driver.................................................................................................II-233

Establishing Communications ..........................................................................................II-234

Confirming Communications ............................................................................................II-235

IEEE 488 Event Custom Control........................................................................................II-235

Reading Driver Status........................................................................................................II-238

External Device Initialization...........................................................................................II-238

Basic Data Acquisition.......................................................................................................II-239

Block Data Acquisition ......................................................................................................II-239

Dynamic Data Exchange (DDE)........................................................................................II-241

Application................................................................................................................................ II-241

Server Links .............................................................................................................................II-241

Acquisition Engine ................................................................................................................... II-243

Sample Programs ................................................................................................................II-246

Data Acquisition Sample Program.......................................................................................... II-246

IEEE 488 Event Custom Control Sample Program ............................................................... II-249

Acquisition Engine Sample Program ...................................................................................... II-250

Command Summary............................................................................................................II-251

10G. Utility Programs ................................................................................ II-251

Introduction .........................................................................................................................II-251

WINTEST ..............................................................................................................................II-251

Opening a Device Handle for Communication ....................................................................... II-252

Handle Lists ............................................................................................................................. II-252

WINTEST Session....................................................................................................................II-253

QUIKTEST............................................................................................................................II-254

Application Files....................................................................................................................... II-254

Installation ...............................................................................................................................II-254

Operation of the Application ...................................................................................................II-255

Cutting & Pasting to Other Applications ...............................................................................II-255

Dynamic Data Exchange (DDE).............................................................................................. II-255

Loading the Project into Visual Basic..................................................................................... II-256

Licensing...............................................................................................................................II-256

10H. Command Reference ........................................................................II-256

11. Driver488/W95 .......................................................................................... II-257

12. Driver488/WNT.........................................................................................II-258

SECTION III: COMMAND REFERENCES.................................................... III-259

13. Overview ................................................................................................. III-261

14. Command Summaries .......................................................................... III-262

14A. Driver488/SUB, C Languages ....................................................... III-262

Function Descriptions ...................................................................................................... III-262

The Commands .................................................................................................................. III-264

Syntax Parameters ............................................................................................................ III-264

Defined Constants ............................................................................................................. III-265

Structure Definitions........................................................................................................ III-265

14B. Driver488/SUB, QuickBASIC......................................................... III-266

Function Descriptions ...................................................................................................... III-266

The Commands .................................................................................................................. III-268

Syntax Parameters ............................................................................................................ III-268

Defined Constants ............................................................................................................. III-269

Structure Definitions........................................................................................................ III-269

14C. Driver488/SUB, Pascal.................................................................... III-270

Function Descriptions ...................................................................................................... III-270

The Commands .................................................................................................................. III-272

xiv Personal488 User’s Manual, Rev. 3.0

Syntax Parameters............................................................................................................ III-272

Defined Constants ............................................................................................................. III-272

Structure Definitions........................................................................................................ III-273

14D. Driver488/W31, C Languages .........................................................III-274

Function Descriptions ...................................................................................................... III-274

The Commands .................................................................................................................. III-276

Syntax Parameters............................................................................................................ III-276

Defined Constants ............................................................................................................. III-276

Structure Definitions........................................................................................................ III-277

14E. Driver488/W31, Visual Basic ..........................................................III-278

Function Descriptions ...................................................................................................... III-278

The Commands .................................................................................................................. III-280

Syntax Parameters............................................................................................................ III-280

Defined Constants ............................................................................................................. III-281

Structure Definitions........................................................................................................ III-281

15. Command References ...........................................................................III-282

15A. Driver488/DRV Commands.............................................................III-282

15B. Driver488/SUB, W31, W95, & WNT Commands...........................III-312

SECTION IV: TROUBLESHOOTING................................................................ IV-353

16. Overview .................................................................................................. IV-355

17. Radio Interference Problems .............................................................. IV-356

18. Troubleshooting Checklists................................................................. IV-357

18A. Introduction ...................................................................................... IV-357

18B. Driver488/DRV .................................................................................. IV-357

18C. Driver488/SUB................................................................................... IV-358

18D. Driver488/W31 ...................................................................................IV-359

18E. Driver488/W95 & Driver488/WNT.................................................. IV-360

19. Error Messages ....................................................................................... IV-361

SECTION V: APPENDIX .......................................................................................V-367

SECTION VI: INDEX............................................................................................ VI-375

Personal488 User’s Manual, Rev. 3.0 xv

xvi Personal488 User’s Manual, Rev. 3.0

Personal488 PC/IEEE 488 Controller

Introduction to this Manual

About this Manual

This edition of the Personal488 User’s Manual supersedes all previous editions.
The material in this manual reflects the particular combinations of IEEE 488 I/O adapter and driver

software, and is comprised of four primary Sections: Hardware Guides, Software Guides, Command
References, and Troubleshooting, followed by two more Sections: Appendix and Index. The last two
pages contain a List of IEEE 488 Acronyms & Abbreviations and a List of ASCII Acronyms &
Abbreviations as additional references for this manual and for other related literature.

Before calling for technical assistance, check the Troubleshooting section for a possible solution to the
problem.

Since much of the hardware and software material in this manual is similar to material elsewhere in the
manual, make sure you view the material which corresponds to your specific hardware and software.
For example, do not read about Driver488/DRV when your application pertains to Driver488/W31

Information which may have changed since the time of printing will be found in a README.TXT file on
disk, or in an addendum to the manual.

How to Use this Manual

Because this manual contains a large volume of information, a four-level table of contents system is
used in addition to a complete Detailed Table of Contents. In this four-level system, the General Table
of Contents at the front of this manual should be used primarily to locate the main Sections of the
manual, i.e., specific hardware guides and software guides. The first page of each Section contains a
second-level table, listing the Chapters with their page locations. Next, many of these Chapters
contain a third-level table, listing the Sub-Chapters or specific Topics with their page locations.
Finally, many of these Sub-Chapters contain a fourth-level table, listing the specific Topics with their
page locations. While this multi-level method is easy to use, experienced users may prefer the
traditional table of contents.

As mentioned above, this manual also includes an Index, so you can quickly find the page(s) pertaining
to a specific topic.

Header Files & Command References

Since changes are taking place in Driver488/W95 and Driver488/WNT software as this publication
goes to press, please refer to your operating system header file for the latest available information
specific to your application.

Personal488 User’s Manual, Rev. 3.0 xvii

xviii Personal488 User’s Manual, Rev. 3.0

Section I:

HARDWARE GUIDES

Personal488 User’s Manual, Rev. 3.0 I-1

I-2 Personal488 User’s Manual, Rev. 3.0

I. HARDWARE GUIDES 1. Overview

I. HARDWARE GUIDES

Chapters

1. Overview............................................................................................ I-3

2. Personal488 (with GP488B) ...........................................................I-8

3. Personal488/AT...............................................................................I-13

4. Personal488/NB ..............................................................................I-17

5. Personal488/MM.............................................................................I-18

6. Personal488/CARD ........................................................................I-22

1. Overview

• • Introduction ........................................................................................ I-4

• • IEEE 488.2 Interface Boards ............................................................I-4

• • Driver488 Software Interface ..........................................................I-4

• • Interface & Interface Board Specifications .................................I-6

Introduction

The Hardware Guides section contains chapters pertaining to different Personal488 Drivers, as
indicated in the previous Section I Table of Contents. Each Driver488 section contains information
regarding specific PC/IEEE 488 controllers. The hardware guide describes the I/O adapter and
includes instructions for inspecting, configuring, and installing the adapter.

Topics

IEEE 488.1-1987 Interface ................................................................................I-6

IEEE 488.2-1987 Interface ................................................................................I-6

GP488B Interface Board...................................................................................I-6

AT488 Interface Board......................................................................................I-6

MP488 Interface Board .....................................................................................I-6

MP488CT Interface Board................................................................................I-7

GP488/2 Interface Board ..................................................................................I-7

GP488/MM Interface Board..............................................................................I-7

NB488 Interface Module ...................................................................................I-7

PCMCIA Interface Card....................................................................................I-7

In addition to this manual, Power488 and Power488CT users receive a manual supplement describing
the Standard Commands for Programmable Instruments (SCPI) command set and the IOTTIMER.DLL,
a Microsoft Windows Dynamic Link Library of functions. This overview introduces the hardware and
software sections of this manual.

The Personal488 converts your PC or PC/AT into an IEEE 488.2-compliant controller. Each controller
package includes an interface board or module, driver software and complete documentation. The
following information provides a brief overview of a specific PC/IEEE 488 interfaces and software
drivers, and of the Driver488 components.

Personal488 User’s Manual, Rev. 3.0 I-3

1. Overview I. HARDWARE GUIDES

IEEE 488.2 Interface Boards

The family of PC/IEEE 488 controllers includes the GP488B, the GP488/2, the AT488, the MP488,
the MP488CT, the GP488/MM and the NB488. All are IEEE 488.2 compatible and supported by
Driver488 software. The MP488 and MP488CT also provide digital I/O, and the MP488CT provides a
set of programmable counter/timers, all of which are fully supported by Driver488. Some features of
the interfaces are listed below:

• GP488B interface board (for PC/XT/AT): Features five jumper-selectable interrupt lines. Three

8-bit jumper-selectable DMA channels are also available. The 8-bit DMA mode provides full
compatibility with programs written for GP488 series boards.

• AT488 interface board (for PC/XT/AT and PS/2 with the ISA bus): Features eleven jumper-

selectable interrupt lines. Three 16-bit and four 8-bit jumper-selectable DMA channels are also
available. The 8-bit DMA mode provides full compatibility with programs written for the GP488
series boards.

• MP488 interface board (for PC/XT/AT and PS/2 with the ISA bus): Features eleven jumper-

selectable interrupt lines. Three 16-bit and four 8-bit jumper-selectable DMA channels are also
available. The 8-bit DMA mode provides full compatibility with programs written for the GP488
series boards. The digital I/O section of this board provides 40 digital I/O lines which can be
programmed for a mix of input and output.

• MP488CT interface board (for PC/XT/AT and PS/2 with the ISA bus): Features eleven jumper-

selectable interrupt lines. Three 16-bit and four 8-bit jumper-selectable DMA channels are also
available. The 8-bit DMA mode provides full compatibility with programs written for the GP488
series boards. The digital I/O section of this board provides 40 input or output lines which can be
programmed for a mix of input and output. The counter/timer section features a programmable
clock generator plus 5 fully independent versatile counter/timer channels.

• GP488/2 interface board (for Personal Systems/2 with MicroChannel architecture): Features seven

software selectable interrupt lines and fourteen 8-bit software selectable DMA arbitration levels.

• GP488B/MM interface board: Converts your Ampro PC/104 Single Board PC into an IEEE 488.2

compliant controller or peripheral.

• NB488 external interface module (for notebook, laptop and desktop PCs): Connects to a PC’s

parallel port eliminating the need for an internal expansion slot.

Driver488 Software Interface

Driver488 is the software interface between DOS or Windows and the IEEE 488 controller board.
Driver488 software includes the driver itself, an installation program, other utility programs, and
programming examples. Driver488 provides a full implementation of the IEEE 488.2 standard, plus
advanced capabilities such as high-speed DMA data transfers, interrupt vectoring on specified events,
automatic error detection, callable subroutines, and serial (COM) port support.

Driver488 monitors all IEEE 488 bus monitoring and control lines and generates an interrupt based on

SRQ status and various other bus conditions. Driver488 software supports automatic program vectoring

to service routines for C, Pascal, and BASIC. On a specified event (Error, SRQ, Peripheral,

Controller, Trigger, Clear, Talk, Listen, Idle, ByteIn, ByteOut, Change),

Driver488 can either call a specified application routine or simulate a light pen interrupt to signal that
the event has occurred.

Versions with HP-style character commands can be accessed by virtually any language that can
communicate with DOS files, and additionally provide standard DOS device driver interfaces which
permit communications with the IEEE 488 bus and/or connected devices in the same manner as LPT1,
COM1, etc. Versions with the Subroutine API offer higher performance and can be used with most
popular C, Pascal, and Basic languages. The Driver488 commands and bus protocol are very similar to
those used by the Hewlett-Packard HP-85 controller.

I-4 Personal488 User’s Manual, Rev. 3.0

I. HARDWARE GUIDES 1. Overview

Versions of Driver488 are described in the following text and table.

• Driver488/DRV: The industry’s easiest-to-use IEEE 488.2 driver, offering HP-style commands,

support for all programming languages and spread sheets, and features such as automatic program
vectoring on SRQ.

• Driver488/SUB : A subroutine-style IEEE 488.2 driver that provides all the function of

Driver488/DRV, as well as high performance for fast, interrupt-driven programmed I/O
operations.

• Driver488/W31: A Dynamic Link Library (DLL) that brings IEEE 488.2 control to Microsoft

Windows 16-bit applications. Includes support for Visual Basic, C, Quick C, Turbo C and
Borland C++.

• Driver488/W95: A Dynamic Link Library (DLL) that brings IEEE 488.2 control to Microsoft

Windows 95 for 32-bit applications. Pending software revisions, it includes support for Microsoft
C, Visual Basic, and Borland C++.

• Driver488/WNT: A Dynamic Link Library (DLL) that brings IEEE 488.2 control to Windows NT

version 3.1 or 3.5 applications. Pending software revisions, it includes support for Windows NT
SDK, or C language compiler Visual Basic 4.

• Driver488/LIB: An IEEE 488.2 library of C function calls that link directly to your application for

maximum speed with minimal memory requirements, adding as few as as 25 Kbytes to a compiled
program. Available with an optional license that allows unlimited copies of compiled applications.

• Driver488/OEM: A compact IEEE 488.2 function-call library that enables quick and easy

integration of IEEE 488.2 capability into PC-based instruments.

• Driver488/IUX: A high performance IEEE 488.2 driver for running Interactive Systems UNIX

System V and AT&T UNIX STREAMS.

• Driver488/SCX: A high performance driver for SCO UNIX System V and AT&T UNIX

STREAMS.

Driver488 Family Overview

Driver488

Driver Type

1

W95

1

WNT

W31 High performance driver for

SUB Higher performance driver

DRV Device driver, compatible

2

LIB

2

OEM

2

IUX

2

SCX

1

Note: Driver488/W95 and Driver488/WNT are minimally discussed in this manual, pending current software revisions. Refer to your operating

system header file for the latest available information specific to your application.

2

Note: Driver488/LIB, OEM, IUX, and SCX are not discussed in this manual. These drivers are shipped with their respective manuals.

3

Note: Call the factory regarding Driver488/OEM compatibility with other operating systems.

Description Compatible

High performance driver for

Windows 95

High performance driver for

Windows NT

Windows

for subroutine-style

programming.

with all languages

Fast, compact, no resident

driver.

Specially designed to operate

as an IEEE 488.2 peripheral.

For Interactive Systems &

SCO UNIX.

Operating

System

Microsoft

Windows 95

Microsoft

Windows NT

Microsoft

Windows 3.x

DOS C, Pascal, &

DOS All, including

DOS C Linkable function

3

DOS

UNIX C Memory resident. No No

Compatible

Languages

C, C++ for

Windows &

Visual Basic

C Dynamic Link Library

C & Visual Basic Dynamic Link Library

QuickBASIC

spreadsheets

C Linkable function

Driver Architecture COM

Dynamic Link Library

(DLL)

(DLL)

(DLL)

Memory resident Yes Yes

Memory resident Yes Yes

calls

calls

Support

No No

No No

No Yes

No No

Optional No

Power488 Digital

I/O & Counter-

Timer Support

Personal488 User’s Manual, Rev. 3.0 I-5

1. Overview I. HARDWARE GUIDES

Interface & Interface Board Specifications

Note 1: The IOT7210 IEEE 488 Controller Chip is 100% compatible with the NEC µPD7210 chip

and exhibits better performance, as well as lower power consumption.

Note 2: Specifications subject to change without notice.

IEEE 488.1-1987 Interface

SH1, AH1, T6, TE0, L4, LE0, SR1, PP0, RL0, DC1, DT1, E1/2

Controller Subsets: C1, C2, C3, C4 and C9
Terminator: Software selectable characters and/or EOI
Connector: Standard Amphenol 57-20240 with metric studs

IEEE 488.2-1987 Interface

IEEE 488 Bus Readback Registers: NDAC, NRFD, DAV, EOI, SRQ
Bus Error Handling

GP488B Interface Board

IEEE 488 Controller Device: IOT7210 (See Note)
Power Consumption: 750mA max @ 5V from PC supply
Dimensions: Occupies one short PC slot size (5.25" long, plus IEEE 488 connector)
Speed: 8-bit DMA: 330K byte/s (reads); 220K byte/s (writes)
Environment: 0 to 50° C, 0 to 95% RH, non-condensing
DMA Capability: 8-bit on channels 0 - 3
Interrupt Capability: IRQ 2 - 7
I/O Base Address: &H02E1, &H22E1, &H42E1, or &H62E1

AT488 Interface Board

IEEE 488 Controller Device: IOT7210 (See Note)
Power Consumption: 750mA max @ 5V from PC supply
Dimensions: Occupies one short PC slot size (5.25" long, plus IEEE 488 connector)
Speed: 16-bit DMA: 1M byte/s (reads); 800K byte/s (writes).8-bit DMA: 330K byte/s (reads); 220K

byte/s (writes)

Environment: 0 to 50° C, 0 to 95% RH, non-condensing
DMA Capability: Channels 1 - 3 (8 - bit) are selectable in a PC/XT or PC/AT.Channels 0 - 3 (8 - bit)

and 5 - 7 (16 - bit) are selectable in a PC/AT. Multiple AT488 boards may share the same DMA
channel.

Interrupt Capability: IRQ 2 - 7 for PC/XT, IRQ 2 - 7, 9, 10 - 12, 14, or 15 for PC/AT 16-bit slot
I/O Base Address: &H02E1, &H22E1, &H42E1, or &H62E1

MP488 Interface Board

IEEE 488 Controller Device: IOT7210 (See Note)
Power Consumption: 2A max @ 5V from PC supply
Dimensions: Occupies one 16-bit PC/AT full slot or 8-bit PC/XT full slot. Fits in PC/ATwith low

PC/XT form-factor. 13.13" long x 3.9" high (333mm x 99mm).
Speed: 16-bit DMA: 1M byte/s (reads); 800K byte/s (writes).8-bit DMA: 330K byte/s (reads); 220K
byte/s (writes)

Environment: 0 to 50° C, 0 to 95% RH, non-condensing
DMA Capability: Channels 1-3 (8-bit) are selectable in a PC/XT or PC/AT.Channels 0-3 (8-bit) and

5-7 (16-bit) are selectable in a PC/AT. Multiple MP488 boards may share the same DMA channel.

Interrupt Capability: IRQ 2-7 for PC/XT, IRQ 2 - 7, 9, 10 - 12, 14, or 15 for PC/AT 16-bit slot
I/O Base Address: &H02E1, &H22E1, &H42E1, or &H62E1
Digital I/O: 40 digital I/O lines; 24 configurable as input or output, 8 fixed input,and 8 fixed output

lines.

I-6 Personal488 User’s Manual, Rev. 3.0

I. HARDWARE GUIDES 1. Overview

MP488CT Interface Board

IEEE 488 Controller Device: IOT7210 (See Note)
Power Consumption: 2A max @ 5V from PC supply
Dimensions: Occupies one 16-bit PC/AT full slot or 8-bit PC/XT full slot. Fits inPC/AT with low

PC/XT form-factor. 13.13" long x 3.9" high (333mm x 99mm).
Speed: 16-bit DMA: 1M byte/s (reads); 800K byte/s (writes).8-bit DMA: 330K byte/s (reads); 220K
byte/s (writes)

Environment: 0 to 50° C, 0 to 95% RH, non-condensing
DMA Capability: Channels 1-3 (8-bit) are selectable in a PC/XT or PC/AT. Channels 0-3 (8-bit) and

5-7 (16-bit) are selectable in a PC/AT.Multiple MP488 boards may share the same DMA channel.

Interrupt Capability: IRQ 2 - 7 for PC/XT, IRQ 2 - 7, 9, 10 - 12, 14, or 15 for PC/AT 16-bit slot
I/O Base Address: &H02E1, &H22E1, &H42E1, or &H62E1
Digital I/O: 40 digital I/O lines; 24 configurable as input or output, 8 fixed input, 8 fixed output lines.
Counter/Timer: AMD Am9513A, 1 frequency output, 5 counter/timers.
Counter/Timer Frequency: DC - 7 MHz.
Internal Timebase: Up to 1 MHz, accuracy of 0.01%.

GP488/2 Interface Board

IEEE 488 Controller Device: IOT7210 (See Note)
Power Consumption: 1A max @ 5V from PC supply.
Dimensions: Occupies one full length slot in a MicroChannel bus.
Speed: 8-bit DMA: 330K byte/s (reads); 220K byte/s (writes).
Environment: 0 to 50° C, 0 to 95% RH, non-condensing
DMA Capability: 8-bit on channels 0 through 14
Interrupt Capability: IRQ 4, 5, 6, 7, 10, 11, or 15.

GP488/MM Interface Board

IEEE 488 Controller Device: IOT7210 (See Note)
Maximum Transfer Rate: 330K byte/s (reads and writes)
Connector: 26-pin header ribbon cable to standard IEEE 488 connectors
Environment: 0 to 70° C; 0 to 95% RH (non-condensing)
DMA Capability: Channels 0, 1, 2., or 3 (jumper selectable)
Interrupts: IRQ 2, 3, 4, 5, 6, or 7
IEEE Base I/O Addresses: &H02E1, &H22E1, &H42E1, or &H62E1

NB488 Interface Module

Speed: 170 Kbyte/s (reads and writes)
Dimensions: 5.5" x 4" x 1.5"
IEEE 488 Connector: Accepts standard IEEE 488 connector with metric studs
Parallel Port Input Connector: Male DB25
Parallel Port Output Connector to Printer IEEE: Female DB25
Instrument Fan-out: Can control up to 14 IEEE instruments
Power: 400-500 mA at 5 VDC from PC keyboard port or 7-15 VDC at 400-500 mA from external

power source
Environment: 0 to 70° C; 0 to 95% RH (non-condensing)

PCMCIA Interface Card

Speed: 1.0M byte/s
Dimensions: Type II (5 mm) PCMCIA Card
Power: 100 mA
I/O: 16-byte, relocatable

Personal488 User’s Manual, Rev. 3.0 I-7

2. Personal488 (with GP488B) I. HARDWARE GUIDES

2. Personal488 (with GP488B)

Topics

• • The Package........................................................................................ I-8

• • Hardware Installation (for PC/XT/AT).......................................... I-8

Installation & Configuration of the Interface Card ................................... I-8

Default Settings ................................................................................................ I-9

I/O Base Address Selection .............................................................................. I-9

Interrupt Selection ........................................................................................... I-9

DMA Channel Selection ................................................................................. I-10

Wait State Configuration .............................................................................. I-11

Internal Clock Selection ................................................................................ I-11

Board Installation.......................................................................................... I-11

The Package

Personal488, including the IEEE 488 interface board and the Driver488 software, is carefully
inspected, both mechanically and electrically, before shipment. When you receive the product, unpack
all items carefully from the shipping carton and check for any obvious signs of physical damage that
may have occurred during shipment. Report any such damage to the shipping agent immediately.
Remember to retain all shipping materials in the event shipment back to the factory becomes necessary.

For the following software versions, the Personal488 package varies:

• Driver488/DRV, SUB, or W31: This package includes: The GP488B IEEE 488 Bus Interface

Board, Driver488 Software Disks (Driver488/DRV, Driver488/SUB, Driver488/W31), and the
Personal488 User’s Manual.

• Driver488/W95: This package includes: The GP488B IEEE 488 Bus Interface Board, Driver488

Software Disks (Driver488/W95), and the Personal488 User’s Manual.

• Driver488/WNT: This package includes: The GP488B IEEE 488 Bus Interface Board, Driver488

Software Disks (Driver488/WNT), and the Personal488 User’s Manual.

Hardware Installation (for PC/XT/AT)

Installation & Configuration of the Interface Card

The following paragraphs explain configuration and physical installation of the interface card.
Software installation and setup are covered in a separate section. After configuring your board, please
make note of the following. This information is needed for Driver488 software installation.

• I/O Base Address

• Interrupt Channel

• DMA channel, if applicable

• Whether or not the board is the System Controller

I-8 Personal488 User’s Manual, Rev. 3.0

I. HARDWARE GUIDES 2. Personal488 (with GP488B)

Note: The GP488B, as illustrated, has one DIP switch, two 12-pin headers and one 3-pin header,

labeled SW1, J3, J4, and J5, respectively. The DIP switch setting, along with the arrangement
of the jumpers on the headers, set the hardware configuration.

Default Settings

The figure indicates the GP488B default configuration. Notice that SW1 controls the wait state
generation, the I/O base address and interrupt response level, J4 sets the interrupt request level, J3
selects the DMA channel, and J5 selects the clock source.

I/O Base Address Selection

The I/O base address sets the addresses used by the computer to communicate with the IEEE 488
interface hardware on the board. The address is normally specified in hexadecimal and can be 02E1,

22E1, 42E1, or 62E1. The registers of the IOT7210 IEEE 488 controller chip and other auxiliary

registers are then located at fixed offsets from the base address.
Most versions of Driver488 are capable of managing as many as four IEEE 488 interface boards. To

do so, the board configurations must be arranged to avoid conflict among themselves. No two boards
may have the same I/O address, but they may, and usually should, have the same DMA channel and
interrupt level.

The factory default I/O base address is 02E1. To use another, set SW1 switches 4 and 5 according to
the following table and figure.

I/O Base Address Register

02E1 22E1 42E1 62E1
02E1 22E1 42E1 62E1
06E1 26E1 46E1 66E1
0AE1 2AE1 4AE1 6AE1
0EE1 2EE1 4EE1 6EE1
12E1 32E1 52E1 72E1
16E1 36E1 56E1 76E1
1AE1 3AE1 5AE1 7AE1
1EE1 3EE1 5EE1 7EE1

Read Register Write Register

Data In Data Out
Interrupt Status 1 Interrupt Mask 1
Interrupt Status 2 Interrupt Mask 2
Serial Poll Status Serial Poll Mode
Address Status Address Mode
CMD Pass Through Auxiliary Mode
Address 0 Address 0/1
Address 1 End of String

Personal488 User’s Manual, Rev. 3.0 I-9

2. Personal488 (with GP488B) I. HARDWARE GUIDES

Interrupt Selection

The GP488B interface board may be set to interrupt the PC on the occurrence of certain hardware
conditions. The level of the interrupt generated is set by J4. The GP488B adheres to the “AT-style”
interrupt sharing conventions. When an interrupt occurs, the interrupting device must be reset by
writing to I/O address 02FX, where X is the interrupt level (from 0-7). This interrupt response level is
set by switches 1, 2, and 3 of SW1 which must be set to correspond to the J4 interrupt level setting.
Interrupt selection is illustrated in the following figure.

DMA Channel Selection

Direct Memory Access (DMA) is a high-speed method of transferring data from or to a peripheral, such
as a digitizing oscilloscope, to or from the PC’s memory. The PC has four DMA channels, but channel
0 is used for memory refresh and is not available for peripheral data transfer. Channel 2 is usually used
by the floppy disk controller, and is also unavailable. Channel 3 is often used by the hard disk
controller in PCs, XTs, and the PS/2 with the ISA bus, but is usually not used in ATs. So, depending
on your hardware, DMA channels 1 and possibly 3 are available. Under some rare conditions, it is
possible for high-speed transfers on DMA channel 1 to demand so much of the available bus bandwidth
that simultaneous access of a floppy controller will be starved for data due to the relative priorities of
the two channels. Configure the board according to which DMA channel, if any, is available.

I-10 Personal488 User’s Manual, Rev. 3.0

I. HARDWARE GUIDES 2. Personal488 (with GP488B)

Wait State Configuration

The GP488B is fast enough to be
compatible with virtually every
PC/XT/AT-compatible computer on the
market. Even if the computer is very fast,
the processor is normally slowed to 8MHz
or below when accessing the I/O channel.
If the I/O channel runs faster than 8 MHz,
it may be faster than the GP488B card. If
you suspect this is a problem, the computer
can be made to wait for the GP488B by
enabling wait states. Increasing the number
of wait states slows down access to the
GP488B card, but the overall performance
degradation is usually only a few percent.

Internal Clock Selection

The IEEE 488 bus interface circuitry requires a
master clock. This clock is normally connected to an
on-board 8 MHz clock oscillator. However, some
compatible IEEE 488 interface boards connect this
clock to the PC’s own clock signal. Using the PC
clock to drive the IEEE 488 bus clock is not
recommended because the PC clock frequency
depends on the model of computer. A standard PC
has a 4.77 MHz clock, while an AT might have a 6
MHz or 8 MHz clock. Other manufacturers’
computers may have almost any frequency clock. If
you are using a software package designed for an interface board (that derived its clock from the PC
clock) and you need to do the same to use GP488B with that particular software, the clock source can
be changed. However, the clock frequency must never be greater than 8 MHz, and clock frequency
must be correctly entered in the Driver488 software.

Board Installation

The IEEE 488 interface board(s) are installed into expansion slots inside the PC’s system unit. PC/AT­compatible computers have two types of expansion slots: 8-bit (with one card-edge receptacle), and 16­bit (with two card-edge receptacles). Eight-bit boards, such as the IEEE 488 interface boards, may be
used in either type of slot, 8- or 16-bit. Some machines may have special 32-bit memory expansion
slots which should not be used for IEEE 488 interface boards.

Install each IEEE 488 interface board into the expansion slots as follows: Ensure the PC is turned off
and unplug the power cord. Remove the cover mounting screws from the rear of the PC system unit.
Remove the system unit cover by sliding it forward and tilting it upward.

Personal488 User’s Manual, Rev. 3.0 I-11

2. Personal488 (with GP488B) I. HARDWARE GUIDES
A rear panel opening is provided at the end of each expansion slot for mounting I/O connectors. If a

slot is unused, this opening is covered by a metal plate held in place with a screw. Remove this screw
and the cover plate from the desired expansion slot, saving the screw.

Insert the IEEE 488 interface board carefully into the expansion slot, fitting the IEEE 488 connector
through the rear panel opening, and inserting its card edge into the motherboard card edge receptacle.
With the board firmly in place, fix its mounting bracket to the rear panel, using the screw removed from
the cover plate.

Slide the system unit cover back on, re-attaching it with the screws. Plug the power cord in and turn on
the PC. If all is well, the system should boot normally. If not, carefully check that none of the I/O
addresses conflict with any other devices or boards. If you are not sure, contact your PC’s dealer or
manufacturer.

I-12 Personal488 User’s Manual, Rev. 3.0

I. HARDWARE GUIDES 3. Personal488/AT

3. Personal488/AT

Topics

• • The Package.......................................................................................I-13

• • Hardware Installation (for PC/XT/AT).........................................I-13

Installation & Configuration of the Interface Card ..................................I-13

Default Settings ...............................................................................................I-13

I/O Base Address Selection.............................................................................I-13

Interrupt Selection ..........................................................................................I-14

DMA Channel Selection..................................................................................I-15

Board Installation...........................................................................................I-15

The Package

Personal488/AT, including the IEEE 488 interface board and the Driver488 software, is carefully
inspected, both physically and electronically, before shipment. When you receive the product, unpack
all items carefully from the shipping carton and check for any obvious signs of physical damage that
may have occurred during shipment. Report any such damage to the shipping agent immediately.
Remember to retain all shipping materials in the event shipment back to the factory becomes necessary.

The Personal488/AT includes:

• AT488 IEEE Bus Interface Board

• Driver488 Software Disks
(Driver488/DRV, Driver488/SUB, Driver488/W31, & Driver488W95)

• Personal488 User’s Manual

Hardware Installation (for PC/XT/AT)

Installation & Configuration of the Interface Card

The following paragraphs explain configuration and physical installation of the interface card.
Software installation and setup are covered in a separate section. After configuring your board, please
make note of the following: the I/O Base Address, the interrupt channel, the DMA channel, if any, and
whether or not the board is the System Controller. This information is needed for Driver488 software
installation.

The Personal488/AT has two DIP switches (S1 and S2), and three 14-pin headers (IRQ, DACK and
DRQ). The DIP switch settings, along with the arrangement of the jumpers on the headers, set the
hardware configuration.

Default Settings

Notice that S1 and IRQ set the interrupt response level, S2 controls the I/O base address, and DACK
and DRQ select the DMA channel.

Personal488 User’s Manual, Rev. 3.0 I-13

3. Personal488/AT I. HARDWARE GUIDES

I/O Base Address Selection

The I/O base address sets the addresses used by the computer to communicate with the IEEE 488
interface hardware on the board. The address is normally specified in hexadecimal and can be 02E1,

22E1, 42E1, or 62E1. The registers of the IOT7210 IEEE 488 controller chip and other auxiliary

registers are then located at fixed offsets from the base address.
Most versions of Driver488 are capable of

managing as many as four IEEE 488 interface
boards. To do so, the board configurations
must be arranged to avoid conflict among
themselves. No two boards may have the
same I/O address, but they may, and usually
should, have the same DMA channel and
interrupt level.

The factory default I/O base address is 02E1.
To use a different base address, set S2
according to the figure.

I/O Base Address Register

02E1 22E1 42E1 62E1
02E1 22E1 42E1 62E1
06E1 26E1 46E1 66E1
0AE1 2AE1 4AE1 6AE1
0EE1 2EE1 4EE1 6EE1
12E1 32E1 52E1 72E1
16E1 36E1 56E1 76E1
1AE1 3AE1 5AE1 7AE1
1EE1 3EE1 5EE1 7EE1

Read Register Write Register

Data In Data Out
Interrupt Status 1 Interrupt Mask 1
Interrupt Status 2 Interrupt Mask 2
Serial Poll Status Serial Poll Mode
Address Status Address Mode
CMD Pass Through Auxiliary Mode
Address 0 Address 0/1
Address 1 End of String

Interrupt Selection

The AT488 interface board may be set to interrupt the PC on the occurrence of certain hardware
conditions. The main board interrupt may be set to IRQ level 3 through 7, 9 through 12, 14, or 15.

I-14 Personal488 User’s Manual, Rev. 3.0