National Instruments 180742-01, User Manual

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© National Instruments Corporation vii GPIB-LPT User Manual
Contents
Section One
Introduction
................................................................................................................. 1-1
Features............................................................................................................................ 1-1
What Your Kit Should Contain ...................................................................................... 1-3
Optional Equipment ........................................................................................................ 1-3
Section Two
Configuration and Installation
.................................................................. 2-1
Configuration .................................................................................................................. 2-2
Switch and Jumper Settings ................................................................................ 2-3
Base I/O Address and Interrupt Selection ........................................................... 2-3
Listen Address and Control Function Selection .................................................. 2-5
Installation........................................................................................................................ 2-8
Section Three
Function Description
........................................................................................... 3-1
Address Decoding .......................................................................................................... 3-2
Configuration Jumpers ................................................................................................... 3-2
Data and Control Latches ................................................................................................ 3-2
Data Transceivers ............................................................................................................ 3-2
Data Wrap, Control Wrap and Status Buffers ................................................................ 3-2
External Device Listen Address Switch .......................................................................... 3-2
GPIB Handshaking ......................................................................................................... 3-3
GPIB Addressing ........................................................................................................... 3-3
Section Four
Running Diagnostic Tests
................................................................................ 4-1
The GPIB-LPT Test Commands .................................................................................... 4-1
-1 printer test ....................................................................................................... 4-1
-2 plotter test ....................................................................................................... 4-2
-c change LPT configuration ............................................................................... 4-3
-q quit .................................................................................................................. 4-3
Section Five
Programming the GPIB-LPT
....................................................................... 5-1
The GPIB-LPT Registers ................................................................................................ 5-1
Data Register (DATA) ........................................................................................ 5-2
Status Register (STAT) ....................................................................................... 5-3
Control Register (CTRL) .................................................................................... 5-5
Programming Considerations ......................................................................................... 5-6
Using the GPIB-LPT with the DOS Operating System ..................................... 5-6
Using the GPIB-LPT with C and BASIC ........................................................... 5-6
Acessing the Parallel Port in C ................................................................ 5-7
Acessing the Parallel Port in BASIC ...................................................... 5-7