Assignment

To assign one signal to the value of another signal, use the <= operator. This is a hardware synthesizable assignment connecting two wires together.

var a = Logic(), b = Logic();

// assign `a` to always have the same value as `b`
a <= b;

It is also possible to do a partial assignment to a signal using assignSubset.

var a = Logic(width: 3), b = Logic(width: 2);

// assign the bottom two bits of `a` to have the same value as `b`
a.assignSubset(b.elements);

// assign the upper bit (index 2) of `a` to be 0
a.assignSubset([Const(0)], 2);

If you’re assigning groups of bits that are already collected as a single Logic, consider using a swizzle.