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Re: [f-cpu] Status quo

To: f-cpu@xxxxxxxx
Subject: Re: [f-cpu] Status quo
From: Nicolas Boulay <nicolas@xxxxxxxxxxx>
Date: Wed, 1 Apr 2015 11:06:45 +0200
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2015-04-01 10:53 GMT+02:00 <whygee@xxxxxxxxx>:

Le 2015-04-01 10:50, Nicolas Boulay a ÃcritÂ:

I believe that your solution is a SIMD instruction that performs
"byte shuffling". I've seen it appear in big CPUs years ago.
Why isn't it used for this purpose ?

No,

why ?

tiling is used for better use of cache. SIMD did not provide such feature.
Â

a solution is to change the way memory adress are translated
inside the 4ko.

how ?

By using a conversion function to translate naturel adress to the real memory address.

Traditionnal memory access are linear, but you could
have an other kind of pattern to make more linear a 2D access.

that's not helping me understand more...

yg
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