[libre-riscv-dev] KCP53000B micro-architecture thoughts

Samuel Falvo II sam.falvo at gmail.com
Thu May 30 19:32:06 BST 2019

On Thu, May 30, 2019 at 11:22 AM Jacob Lifshay <programmerjake at gmail.com> wrote:
> I'd recommend having the additional add/sub unit combined with the branch
> unit since all compares are sub & check top 2 bits of result & check carry
> out & check if result (without carry out) is zero.

An interesting take; of course, it could be the case that ADDs and
SUBs can go to either unit, giving me effectively two ADD/SUB units to
play with, basically for free.

Samuel A. Falvo II

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