From: lkcl <lkcl@web>
Date: Mon, 4 Jul 2022 09:11:15 +0000 (+0100)
Subject: (no commit message)
X-Git-Tag: opf_rfc_ls005_v1~1363
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=42808b6fb51841a900f59ddbaa4bfdee26ec6dfc;p=libreriscv.git

---

diff --git a/3d_gpu/layouts/coriolis2_180nm.mdwn b/3d_gpu/layouts/coriolis2_180nm.mdwn
index aa3c7d88f..098d1a1c5 100644
--- a/3d_gpu/layouts/coriolis2_180nm.mdwn
+++ b/3d_gpu/layouts/coriolis2_180nm.mdwn
@@ -95,3 +95,16 @@ There are several talks online now.
 
 * [[conferences/fosdem2022]]
 * <https://m.youtube.com/playlist?list=PLBtNqZjUZB80uByfZVm0gGYEtmTG0mZzm>
+
+Jean-Paul Chaput of LIP6 carried out several improvements to coriolis2
+in order for it to cope with an 800,000 transistor 30 mm^2 180nm layout.
+These included:
+
+* automatic antennae diodes (needed for stopping ESD),
+* clock tree improvements
+* Dual Power rings (Core, IO)
+* Automatic buffer insertion (clock tree synchronised)
+* High fanout buffers (1 to 128) and repeater buffers
+
+Overall it was a significant amount of work and it is entirely
+automated `RTL2GDS`, no manual intervention required.