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Rep:[f-cpu] New snapshot for EU_INC and EU_CMP
- To: <f-cpu@seul.org>
- Subject: Rep:[f-cpu] New snapshot for EU_INC and EU_CMP
- From: "Nicolas Boulay" <nicolas.boulay@ifrance.com>
- Date: Tue, 30 Jul 2002 07:30:56 GMT
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- Delivery-Date: Tue, 30 Jul 2002 03:31:06 -0400
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-----Message d'origine-----
De: Etienne LABARRE <etienne.labarre@gadz.org>
A: f-cpu english ML <f-cpu@seul.org>
Date: 29/07/02
Objet: [f-cpu] New snapshot for EU_INC and EU_CMP
Hi all,
New snapshot include a lot of changes and features :
INC unit and CMP unit are now two different units, for simplify and
decrease latency
Both units are based to the same component : find_lsb
It's a binary tree for find the first null lsb in a word.
It supports SIMD operations (size of chunk = 8, 16, 32, 64, 128, 256
bits)
>>>> ??? oups ! I think we will go to ever more confusing. F-cpu should
always have 5 chunk size (8-16-32-64&128( for future long double)) and
should have some instruction for the whole register like you're 256 bits
(which is in fact all the bits). So chunk are 5 and fixed (intra-chunk
operation) but the register size are not fixed and we need inter-chunk
operation (where the *number* of chunk isn't given).
nicO
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