Bug 200 - IEEE754 FPU Coriolis2 layout
Summary: IEEE754 FPU Coriolis2 layout
Status: RESOLVED FIXED
Alias: None
Product: Libre-SOC's first SoC
Classification: Unclassified
Component: Hardware Layout (show other bugs)
Version: unspecified
Hardware: Other Linux
: --- enhancement
Assignee: Luke Kenneth Casson Leighton
URL:
Depends on:
Blocks: 138 199 204
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Reported: 2020-03-02 17:00 GMT by Luke Kenneth Casson Leighton
Modified: 2021-11-11 14:30 GMT (History)
2 users (show)

See Also:
NLnet milestone: NLNet.2019.Coriolis2
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Description Luke Kenneth Casson Leighton 2020-03-02 17:00:34 GMT
layout of the IEEE754 FPU "Function Units" needed, as part of the 180nm ASIC in bug #199. these are to be done as reuseable blocks because several FPMUL blocks, several FPSQRT blocks etc. are needed per core, and they are very large.
Comment 1 Luke Kenneth Casson Leighton 2021-11-11 14:30:26 GMT
https://git.libre-soc.org/?p=soclayout.git;a=tree;f=experiments6;hb=HEAD

Jean-Paul this was at least successful and showed that a large layout
would be possible.  we also did the Dependency Matrices:
https://git.libre-soc.org/?p=soclayout.git;a=tree;f=experiments8;hb=HEAD

and also i recall we did a manual explicit positioning of large cells,
at the top level, to see how that went, with internal positioning done
in the large sub-cells.

i think we can close this one.