move docs

docs/architecture.rst

@@ -0,0 +1,26 @@
+Register Block Architecture
+===========================
+
+TODO: Add full block diagram
+
+
+CPU Interface
+-------------
+
+TODO: describe boundary signals. Timing diagrams
+
+Address Decode
+--------------
+
+TODO: describe boundary signals. Timing diagrams
+
+Field Logic
+-----------
+
+TODO: describe boundary signals. Timing diagrams
+
+Readback
+--------
+
+TODO: describe boundary signals. Timing diagrams
+Retiming options