add XDC2020 and OpenPOWER NA 2020

diff --git a/3d_gpu/articles.mdwn b/3d_gpu/articles.mdwn
index 21564ab3a68e54957d89ec9f486c73b8b27cb0d1..69e4d88aeb3191d793724baeb79e2aee81cdada6 100644 (file)
--- a/3d_gpu/articles.mdwn
+++ b/3d_gpu/articles.mdwn
@@ -39,5 +39,7 @@
 * [Feb 15 2020 Slashdot OpenPOWER article](https://news.slashdot.org/story/20/02/16/1743222/openpower-foundation-releases-eula-for-power-isa)
 * [Jul 31 2020 PowerPC Notebook article](https://www.powerpc-notebook.org/2020/07/extended-time-for-donations/#libresoc)
 * [Aug 29 2020 Hackaday Power Notebook](https://hackaday.com/2020/08/28/open-hardware-laptop-built-on-power-pc-isa/#comment-6274161)
+* [Sep 17 XDC2020](https://www.youtube.com/watch?v=FxFPFsT1wDw&t=11935s)
 * [Sep 18 2020 Phoronix](http://www.phoronix.com/scan.php?page=news_item&px=Libre-SOC-2020)
+* [Sep 22 OpenPOWER NA 2020](https://www.youtube.com/watch?v=RjA_WdeuMJw)
 * [Sep 25 2020 Rust Users discussion](https://users.rust-lang.org/t/is-there-a-way-to-learn-the-programming-concepts-to-make-it-easier-to-learn-rust/47439/37?u=programmerjake)