[rescue] A5000 questions...

Frank Van Damme frank.vandamme at student.kuleuven.ac.be
Wed Aug 6 17:41:25 CDT 2003

On Wednesday 06 August 2003 23:29, Dave McGuire wrote:
>    Uhhhhhhhhh, NO.  Sbus is usually clocked at 25MHz and it's four bytes
> wide, making it about the equivalent in performance to baseline PCI.
> The faster (33MHz) baseline PCI clock advantage is eaten up by the way
> sbus starts and stops transfers...with sbus, one transfer can start on
> the very next cycle after the last transfer ends, but with PCI there
> are intervening arbitration cycles.
>    First-generation PCI, Sbus, and DEC's TurboChannel are pretty much
> equivalent in performance, if my tired brain is remembering all the
> numbers correctly.

*big eyes*

And Sun had Sbus what year? 1990? Or earlier?

Which brings up the question... Why the HELL did Sun ever put PCI in it's

Frank Van Damme    http://www.openstandaarden.be
~~~~~~~~~~~~~~~    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Je pense, donc je suis breveti."

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