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Controlling How Signals Are Fit Together
FIT_WITH The FIT_WITH property lets you specify two
signals to be fit together. The FIT_WITH property is allowed on
any .pi output, and takes one argument. For example, to say
that signal node_x should be fit with x, you would need to add
the following statement to the .pi file:
node_x {FIT_WITH x};
Example
SOURCE FILE
INPUT d, e,
NODE d_node
NODE e_node
OUTPUT out,
clk, oe;
CLOCKED_BY clk;
CLOCKED_BY clk;
e_out, not_e_out ENABLED_BY oe;
d_node = d;
e_node = e;
out = d_node;
not_e_out = e_node;
e_out = e_node;
PHYSICAL INFORMATION FILE
d_node {NO_COLLAPSE}
e_node {FIT WITH ‘e_out’}
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