[libre-riscv-dev] Scoreboard vs Tomasulo

[Luke Kenneth Casson Leighton]

Tomasulo's algorithm implements register renaming through the use of what
are called reservation stations.

see? total failure to mention the 6600 Computation Unit latches as being
directly equivalent to that.

therefore total systematic failure in the academic literature *world wide*
to mention that the 6600 had and was the world's first computer design to
have register renaming.


On Saturday, May 16, 2020, Luke Kenneth Casson Leighton <lkcl at lkcl.net>
wrote:

> https://www.cs.umd.edu/~meesh/cmsc411/website/projects/
> dynamic/tomasulo.html
>
> register renaming to eliminate output and anti-dependences, i.e. WAW and
> WAR hazards
>
> also misleading in that it completely misses that the 6600 Q-Tables also
> provide the concept of register renaming.
>
> the Latches at the Function Unit are directly equivalent to RS Row latches
> and are consequently "nameless registers".
>
> hence you start to see why the Academic literature is hopelessly
> misleading and why Mitch was pretty much compelled to write those two book
> chapters.
>
> l.
>
>
>
> --
> ---
> crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
>
>

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