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Article View: comp.os.ms-windows.programmer.tools
Article #190

Win App and DMA transfers

#190
From: Mike Morelli
Date: Wed, 29 Jul 1992 16:48
41 lines
2136 bytes
High Netters,

I've been writting (*trying* to) a windows application which accepts
data from an Analogic (FAST 14-1-4) 14 bit, 1Mhz ADC board which has
4Mb of local memory(not memory mapped to the PC).  The board transfers
data to the PC two words at a time via DMA (thats alot of DMA INTs!).
The vender supplied software library is written for DOS (MSCv6.0), and
not windows.  I am currently using MSCv7.0, Windows 3.1, and running
a 386/33 with 8Mb, and MS DOS 5.0.

I'm new at this type of interfacing through Windows so.....

Questions:

1) Do any of you have suggestions/comments on how to start this project?
   Any references, I've got the books by Petzold, Rector, Norton&Yao -
   these aren't much help for this.  Is the book by Daniel Norton,
   "DEvice Drivers For Windows" something I should track down?  I've
   got the library looking for some related DDJ articles from early 
   this year.

2) Do I have all the software tools I need?  I've come across an
   advertisment (pg 139) in this months DDJ (8/92) for TurboPower's
   Windows System Library.  It apparently has, ammung other things,
   "DPMI access for advanced interrupt and memory control".  Anyone
   heard of this product before? Maybe used it?  Is this something
   I should consider?

Comemnts and insights would really help me get started.

Replys by email would be best (nus16@ttacs1.ttu.edu)

I will be happy to post a summary if folks would like.

Thanks for you feedback!

___________________________________________________________________
Michael Morelli			Internet: nus16@ttacs1.ttu.edu
Optical Systems Lab             Phone: 806-742-3575
Texas Tech University
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Message-ID: <Jul.29.12.48.28.1992.26828@pilot.njin.net>
Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!rutgers!dziuxsolim.rutgers.edu!pilot.njin.net!morelli

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Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!rutgers!dziuxsolim.rutgers.edu!pilot.njin.net!morelli
From: morelli@pilot.njin.net (Mike Morelli)
Newsgroups: comp.os.ms-windows.programmer.tools
Subject: Win App and DMA transfers
Summary: Win App for ADC board with DMA Xfers
Keywords: DMA.,DPMI,Device Drivers
Message-ID: <Jul.29.12.48.28.1992.26828@pilot.njin.net>
Date: 29 Jul 92 16:48:28 GMT
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 41