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diff --git a/src/add/singlepipe.py b/src/add/singlepipe.py
index 62a5e641f8ae6f408a4f380f482033471877ccc6..e83ba876128d7c7778f8fde7a43cf8edb887c8c0 100644 (file)
--- a/src/add/singlepipe.py
+++ b/src/add/singlepipe.py
@@ -148,6 +148,14 @@
     dan calls a "buffered handshake".
 
     it's quite a complex state machine!
+
+    BufferedPipeline2
+    -----------------
+
+    Synchronised pipeline
+
+    Based on:
+    https://github.com/ZipCPU/dbgbus/blob/master/hexbus/rtl/hbdeword.v
 """
 
 from nmigen import Signal, Cat, Const, Mux, Module, Value