add link to comp.arch

diff --git a/3d_gpu/architecture/6600scoreboard.mdwn b/3d_gpu/architecture/6600scoreboard.mdwn
index 0b0328888c85f0e6a911513d04398cd5be4b5e8e..99ad1fef80f0a221a0a8d87f3e6ec592f1e60b59 100644 (file)
--- a/3d_gpu/architecture/6600scoreboard.mdwn
+++ b/3d_gpu/architecture/6600scoreboard.mdwn
@@ -336,8 +336,9 @@ conditions are as follows:
 
 [[!img mem_l0_to_l1_bridge.png size="600x"]]
 
-Twin L0 cache/buffer design
+## Twin L0 cache/buffer design
 
+See <https://groups.google.com/d/msg/comp.arch/cbGAlcCjiZE/OPNAvWSHAQAJ>.
 [Flaws](https://bugs.libre-soc.org/show_bug.cgi?id=216#c24)
 in the above were detected, and needed correction.