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Teilenummer | DM6806 |
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Beschreibung | DATA MODULE DIGITAL I/O BOARD | |
Hersteller | ETC | |
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Gesamt 30 Seiten www.datasheet4u.com
DM5806/DM6806
User’s Manual
®
Real Time Devices USA, Inc.
“Accessing the Analog World”®
Publication No. 5806-8/18/99
Programming the DM5806 .................................................................................................................................... 4-7
Clearing and Setting Bits in a Port .................................................................................................................... 4-8
Initializing the 8255 PPI .................................................................................................................................... 4-9
Digital I/O Operations ....................................................................................................................................... 4-9
Timer/Counters .................................................................................................................................................. 4-9
Interrupts .......................................................................................................................................................... 4-11
www.datasheet4u.comWhat Is an Interrupt? ................................................................................................................................... 4-11
Interrupt Request Lines ............................................................................................................................... 4-11
8259 Programmable Interrupt Controller .................................................................................................... 4-11
Interrupt Mask Register (IMR) .................................................................................................................... 4-11
End-of-Interrupt (EOI) Command .............................................................................................................. 4-11
What Exactly Happens When an Interrupt Occurs? ................................................................................... 4-11
Using Interrupts in Your Programs ............................................................................................................. 4-12
Writing an Interrupt Service Routine (ISR) ................................................................................................ 4-12
Saving the Startup Interrupt Mask Register (IMR) and Interrupt Vector ................................................... 4-13
Restoring the Startup IMR and Interrupt Vector ......................................................................................... 4-14
Common Interrupt Mistakes ........................................................................................................................ 4-14
Example Programs ............................................................................................................................................... 4-14
C and Pascal Programs .................................................................................................................................... 4-14
BASIC Programs ............................................................................................................................................. 4-14
APPENDIX A — DM5806 SPECIFICATIONS .................................................................................. A-1
APPENDIX B — I/O CONNECTOR PIN ASSIGNMENTS ............................................................. B-1
APPENDIX C — COMPONENT DATA SHEETS ............................................................................. C-1
APPENDIX D — WARRANTY ............................................................................................................ D-1
ii
6 Page AT Bus Connector (DM6806)
The DM6806 is exactly the same as the DM5806 except for the addition of the AT bus connector . This allows
you to stack the module with CPU's that have AT bus connectors.
Using This Manual
www.datasheet4u.com
This manual is intended to help you install your new board and get it running quickly, while also providing
enough detail about the board and its functions so that you can enjoy maximum use of its features even in the most
complex applications. We assume that you already have an understanding of data acquisition principles and that you
can customize the example software or write your own applications programs.
When You Need Help
This manual and the example programs in the software package included with your board provide enough
information to properly use all of the board’s features. If you have any problems installing or using this board,
contact our Technical Support Department, (814) 234-8087, during regular business hours, eastern standard time or
eastern daylight time, or send a FAX requesting assistance to (814) 234-5218. When sending a FAX request, please
include your company’s name and address, your name, your telephone number, and a brief description of the
problem.
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Seiten | Gesamt 30 Seiten | |
PDF Download | [ DM6806 Schematic.PDF ] |
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