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* [libre-riscv-dev] sum-addressed decoder
@ 2020-05-01 14:32 Jacob Lifshay
  2020-05-01 19:09 ` Luke Kenneth Casson Leighton
  0 siblings, 1 reply; 2+ messages in thread
From: Jacob Lifshay @ 2020-05-01 14:32 UTC (permalink / raw)
  To: Libre-RISCV General Development

I found this interesting idea:
https://en.wikipedia.org/wiki/Sum-addressed_decoder
The patents appear to have expired.

Jacob
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* Re: [libre-riscv-dev] sum-addressed decoder
  2020-05-01 14:32 [libre-riscv-dev] sum-addressed decoder Jacob Lifshay
@ 2020-05-01 19:09 ` Luke Kenneth Casson Leighton
  0 siblings, 0 replies; 2+ messages in thread
From: Luke Kenneth Casson Leighton @ 2020-05-01 19:09 UTC (permalink / raw)
  To: Libre-RISCV General Development

On Friday, May 1, 2020, Jacob Lifshay <programmerjake@gmail.com> wrote:

> I found this interesting idea:
> https://en.wikipedia.org/wiki/Sum-addressed_decoder
> The patents appear to have expired.


"If the reader feels that this was an inordinate amount of brain-twisting
work for a three gate improvement in a multi-cycle critical path, then the
reader has a better appreciation for the level to which modern CPUs are
optimized."

hilarious :)

could you raise a bugreport for it, as a future enhancement? it would be
good to look at this later

l.



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2020-05-01 14:32 [libre-riscv-dev] sum-addressed decoder Jacob Lifshay
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