add raven link

diff --git a/3d_gpu.mdwn b/3d_gpu.mdwn
index 9eb3b42fc97a556d92456d09202242d04dd9829f..41f1331c962f79447e31527ff7840f03f8b16c86 100644 (file)
--- a/3d_gpu.mdwn
+++ b/3d_gpu.mdwn
@@ -64,3 +64,4 @@ Progress:
 * <https://chips4makers.io/blog/>
 * <https://hackaday.io/project/7817-zynqberry>
 * <https://wiki.f-si.org/index.php/FSiC2019>
+* <https://github.com/efabless/raven-picorv32>