[Libre-soc-dev] Paper about Dadda vs Wallace multiplier efficiency

Luke Kenneth Casson Leighton lkcl at lkcl.net
Wed Dec 30 14:08:05 GMT 2020

On Wed, Dec 30, 2020 at 1:31 AM Jacob Lifshay <programmerjake at gmail.com> wrote:

> wallace is actually nearly identical to dadda, since both of them have a
> tree of carry-save adders (a carry-save adder is just a list of 1-bit
> full-adders with no carry propagation -- pretty simple) that convert 3
> terms to 2 terms then a final standard adder to add the last 2 terms. the
> difference between wallace and dadda is just in how the tree is structured
> a little differently.

ahh ok.  appreciated the distinction.


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