National Instruments PCI-DIO-96

Chapter 6 Programming

National Instruments Corporation 6-11 PCI-DIO-96 User Manual

Figure 6-2 shows the control word written to the Configuration Register

to configure port B for input in mode 1. Notice that port B does not have

extra input or output lines from port C.

Figure 6-2. Control Word to Configure Port B for Mode 1 Input

During a mode 1 data read transfer, read port C to obtain the status of

the handshaking lines and interrupt signals. See the Port C Status-Word

Bit Definitions for Input (Ports A and B), Port C Status-Word Bit

Definitions for Output (Ports A and B), and Port C Status-Word Bit

Definitions for Bidirectional Data Path (Port A Only) sections later in

this manual for detailed definitions.

D7 D6 D5 D4 D3 D2 D1 D0

1XXXX1 X1

Contents

Main Page Important Information WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS Trademarks Copyright Page Page Chapter 4 Theory of Operation Chapter 5 Register Map and Description Chapter 6 Programming Page Figures Tables About This Manual Organization of This Manual Conventions Used in This Manual National Instruments Documentation Related Documentation Customer Communication Introduction About the PCI-DIO-96 What You Need to Get Started Software Programming Choices National Instruments Application Software NI-DAQ Driver Software Register-Level Programming Optional Equipment Custom Cabling Unpacking Installation and Configuration Software Installation Hardware Installation Board Configuration Signal Connections I/O Connector ! I/O Connector Pin Descriptions Chapter 3 Signal Connections PCI-DIO-96 User Manual 3-2 National Instruments Corporation Chapter 3 Signal Connections National Instruments Corporation 3-3 PCI-DIO-96 User Manual Page Port C Pin Assignments Digital I/O Signal Connections Page Power Connections ! Timing Specifications Page Mode 1 Input Timing Mode 1 Output Timing Mode 2 Bidirectional Timing Theory of Operation Functional Overview Chapter 4 Theory of Operation PCI-DIO-96 User Manual 4-2 National Instruments Corporation PCI Interface Circuitry 82C55A Programmable Peripheral Interface 82C53 Programmable Interval Timer Interrupt Control Circuitry Chapter 4 Theory of Operation PCI-DIO-96 User Manual 4-4 The block diagram in Figure 4-2 illustrates the PCI-DIO-96 interrupt control circuitry. Figure 4-2. PCI-DIO-96 Interrupt Control Circuitry Block Diagram Register Map and Description Introduction Register Map Register Descriptions Register Description Format Register Description for the 82C55A Chapter 5 Register Map and Description PCI-DIO-96 User Manual 5-4 a. Control Word Flag, Mode Set (bit 7 = 1) b. Control Word Flag, Bit Set/Reset (bit 7 = 0) Register Description for the 82C53 Register Description for the Interrupt Control Registers Interrupt Control Register 1 Page Interrupt Control Register 2 Interrupt Clear Register Programming PCl Local Bus Programming Examples Page PCI Initialization for the PC PCI Initialization for the Macintosh Programming Options Using NI-DAQ and the Driver Toolkit Performing Simple Accesses Developing Your Own Interrupt Method Port Identification Programming Considerations for the 82C55A Modes of Operation Mode 0 Mode 1 Mode 2 Single Bit Set/Reset Feature Mode 0Basic I/O Page Mode 0 Basic I/O Programming Example Mode 1Strobed Input Page Port C Status-Word Bit Definitions for Input (Ports A and B) Mode 1 Strobed Input Programming Example Mode 1Strobed Output Page Port C Status-Word Bit Definitions for Output (Ports A and B) Mode 1 Strobed Output Programming Example Mode 2Bidirectional Bus Page Port C Status-Word Bit Definitions for Bidirectional Data Path (Port A Only) Mode 2 Bidirectional Bus Programming Example Interrupt Handling Interrupt Programming Examples for the 82C55A Mode 1 Strobed Input Programming Example Mode 1 Strobed Output Programming Example Mode 2 Bidirectional Bus Programming Example Programming Considerations for the 82C53 General Information Interrupt Programming Example Page Page A Specifications Digital I/O Bus Interface Power Requirement Physical Environment B MSM82C55A Data Sheet C MSM82C53 Data Sheet D Customer Communication FTP Support Electronic Services Bulletin Board Support Fax and Telephone Support Telephone Fax Fax-on-Demand Support E-Mail Support (currently U.S. only) Technical Support Form PCI-DIO-96 Hardware and Software Configuration Form National Instruments Products Other Products Documentation Comment Form Title: Edition Date: Part Number: Mail to: Technical Publications Fax to: Glossary Numbers/Symbols A B C D Page Page S T V W Index Numbers A B C D E F G H I L M N O P R S T