[libre-riscv-dev] [Bug 178] first coriolis2 tutorial, workflow and "test project" page

[bugzilla-daemon at libre-riscv.org]

http://bugs.libre-riscv.org/show_bug.cgi?id=178

--- Comment #138 from Jean-Paul.Chaput at lip6.fr ---
(In reply to Luke Kenneth Casson Leighton from comment #137)
> okaay i have managed to "place" add.ap and sub.ap onto a blank alu_hier.ap
> and got it to route.
> 
> etesian.place() complained "feed_0 already exists" feed_1 .... thousands
> of complaints.

  This typically happens when you try to place again a block.
  Feed cell are used by the placer after placing normal cells to fill
  the free space. They are named "feed_XXXX".

> *once* i managed to get everything to route, it was however not reproducible.

  To be reproductible, be sure to erase any vst/ap file before each run.
  In your case, ap should be sufficient.

> so i have switched off etesian.place() for now - obviously the remaining
> cells (Muxes etc.) are not placed or routed.
> 
> next question: how to get those extra cells placed?

  I will look into it this weekend !

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