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Honored Contributor

18 years ago

3 Input Adder in Stratix II Using 1 ALM

There is a great link on the Altera web page explaining how to implement a 3 input parallel adder in one ALM. http://www.altera.com/products/devices/stratix2/features/architecture/st2-adder.htm...

Altera_Forum

Honored Contributor

18 years ago

I just use assign "sum = a+b+c" in Verilog.

You need to be a little careful with the grouping in adder trees, matching up the bitwidths, etc. There is some discussion in this manual -

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3 Input Adder in Stratix II Using 1 ALM

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