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4. Using MegaCore Functions
Altera provides a number of parameterizable intellectual property (IP) MegaCore
functions that you can integrate into the Simulink model of your DSP Builder designs.
1
The OpenCore Plus evaluation feature allows you to download and evaluate these
MegaCore functions in hardware and simulation prior to licensing.
Blocks represent these MegaCore functions in the MegaCore Functions library of the
Altera DSP Builder Blockset in the Simulink Library Browser.
You must parameterize and generate these MegaCore functions after you add one of
these blocks to your model.
f Refer to “MegaCore Function Design Example” on page 4–3 for an example of the
design flow using these MegaCore functions.
Installing MegaCore Functions
Altera DSP MegaCore functions install with the Quartus ? II software.
f Refer to the MegaCore function user guides for information about each MegaCore
function.
You must run the DSP Builder MegaCore function setup command after installing
new MegaCore functions to update DSP Builder.
To run this setup command, follow these steps:
1. Start DSP Builder in MATLAB, on Windows OS, click on Start , point to All
Programs , click Altera <version> , click DSP Builder , and click Start in MATLAB
version XX . If MATLAB is already running, ensure you close the Simulink library
browser.
2. Use the cd command at the MATLAB prompt to change directory to the directory
where DSP Builder is installed.
3. Run the setup command by typing the following at the MATLAB prompt:
alt_dspbuilder_setup_megacore r
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The process of building the MegaCore function blocks may take several minutes. Do
not close MATLAB before the process completes. Expect and ignore any messages of
the form “ Cannot find the declaration of element 'entity' .“ when installing a
new MegaCore library.
Running this command, creates a MegaCore Functions subfolder below the Altera
DSP Builder Blockset in the Simulink Library Browser.
In this folder, there is a blue block with a version name for each of the installed
MegaCore functions.
November 2013
Altera Corporation
DSP Builder Handbook
Volume 2: DSP Builder Standard Blockset
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