add 4,5 points

diff --git a/3d_gpu/arch_comparison.mdwn b/3d_gpu/arch_comparison.mdwn
index dba10a3e39f635bc01bc3708368a40a16026a136..ba80819644b9dee6e20376713b3cddac72a15820 100644 (file)
--- a/3d_gpu/arch_comparison.mdwn
+++ b/3d_gpu/arch_comparison.mdwn
@@ -8,6 +8,7 @@ Feature/Need   | RISC-V | MIPS    | OpenPOWER | OpenRISC |
 Open           | NO (1) | NO (2)  | NO (3)    | Yes      |
 Libre-friendly | NO (1) | unknown | Yes       | Yes      |
 Trademarked    | Yes    | Yes     | Yes       | No       |
+Extensible     | NO (4) | unknown | (5)       | Yes      |
 gcc            | Yes    | Yes     | Yes       | Yes      |
 llvm           | Yes    | Yes     | Yes       | Yes      |
 distros (deb)  | Yes    | Yes     | Yes       | No       |
@@ -18,3 +19,8 @@ linux kernel   | Yes    | Yes     | Yes       | Yes      |
 * (1) too numerous reasons to count, for well over 4 years.
 * (2) efforts to be "open" have stalled, website non-functional
 * (3) OpenPower Foundation making a huge effort, really appreciated
+* (4) repeated in-good-faith requests for participation and inclusion in
+  extending RISC-V have met with stone-cold silence for over 18 months,
+  in direct violation of Trademark Law's clear-cut responsibilities.
+* (5) provisionally and in principle: yes.  however as of 2019jan21 this is
+  yet to be tested and an agreement reached.