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Chapter 10: Adding a Board Library
Creating a New Board Description
10–3
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< documentation > text </ documentation > This subelement contains text
describing the component and one of the following variable that define how the
pin name, or list of pin-names appears in the new board library:
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■
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%pinname% for single bit type
%pinlist% for selectable single bit type
%indexedpinliat% for fixed size bus type
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< display [attributes] > This subelement has the following attributes:
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icon= specifies the image file name for the component
width= specifies the display width for the image file
height= specifies the display height for the image file
1
For components without an image, you can omit the icon display attribute and define
a visual representation using the plot and fprintf commands. For example:
<display width="90" height="26">
plot([0 19 20 21 22 21 20 19], [0 0 1 0 0 0 -1 0]);
fprintf('EVAL IO OUT \n%pinname% ');
</display>
Example Component Description File
The following code shows an example of a component description file:
<component displayname="EVAL IO OUT" direction="Output"
type="BIT[1,0]">
<documentation>
Prototyping Area Pin Single Bit Output
%pinlist%
</documentation>
<display width="90" height="26">
plot([0 19 20 21 22 21 20 19],[0 0 1 0 0 0 -1 0]);
fprintf('EVAL IO OUT \n%pinname% ');
</display>
</component>
Board Description File
Create the board description file, < board_name >.board, in the following folder:
< install dir >\quartus dsp_builder lib boardsupport boards
The board description file has header and board description sections.
Header Section
This section contains the following line that defines the XML version and character
encoding:
November 2013
Altera Corporation
DSP Builder Handbook
Volume 2: DSP Builder Standard Blockset
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