Unique Blocks (.xml)

A unique blocks file is formatted in XML. The unique blocks can be of type cbx, cby, or sb. As illustrated by the XML code below, the file includes the type and coordinates of these unique blocks, as well as the coordinates of their corresponding instances.

Configurable Block

Unique blocks can be applied to various blocks, each of which can be of type cbx, cby, or sb, and may have different coordinates.

Note

For each block, a set of keys can be defined. For unique blocks, both keys and instances can be specified. However, if a unique block does not have an instance, only keys are permitted.

• type specifies the type of the unique block in the FPGA fabric. Valid values for type are cbx, cby, or sb.

• x represents the x-coordinate of the unique block.

• y represents the y-coordinate of the unique block.

Configurable Instance

A specific unique block can have multiple instances, where each instance is a mirrored version of the unique block. Each instance shares the same type as its parent block and includes information about its coordinates.

Note

• x specifies the x-coordinate of the instance.

• y specifies the y-coordinate of the instance.

The following content provides an example of a unique block file:

<unique_blocks>
    <block type="sb" x="0" y="0"/>
    <block type="sb" x="0" y="1"/>
    <block type="sb" x="1" y="0"/>
    <block type="sb" x="1" y="1"/>
    <block type="cbx" x="1" y="0">
        <instance x="0" y="0"/>
        <instance x="0" y="1"/>
    </block>
    <block type="cbx" x="1" y="1"/>
    <block type="cby" x="0" y="1">
        <instance x="0" y="0"/>
        <instance x="1" y="0"/>
    </block>
    <block type="cby" x="1" y="1"/>
</unique_blocks>