Need help with a couple symbols in a Quartus RTL view.
In the attached jpg I have drawn the symbols.
Questions:
What circuit is the circle with the plus in it representing?
What does the 10'H 200 mean?
The output is ten bits but only eight are shown going to input D.
Are all ten bits going to input D and only 8 are being read?
What circuit is the trapezoid representing?
What does the 1'H 1 mean?
What does hfc mean?
I have only seen adders as squares with A, B, Cin, Cout, Sum out. I have never seen a circle.
What type of adder is it?
Is hfc - high frequency clock or something else?