Add breakdown of cmp_wrap() for reference

NOTES.md

@@ -0,0 +1,18 @@
+| a | b | cmp_wrap(a, b) |
+| --- | --- | --- |
+| 00 | 00 | 0 |
+| 00 | 01 | 1 |
+| 00 | 10 | 1 |
+| 00 | 11 | 0 |
+| 01 | 00 | 0 |
+| 01 | 01 | 0 |
+| 01 | 10 | 1 |
+| 01 | 11 | 1 |
+| 10 | 00 | 0 |
+| 10 | 01 | 0 |
+| 10 | 10 | 0 |
+| 10 | 11 | 1 |
+| 11 | 00 | 1 |
+| 11 | 01 | 0 |
+| 11 | 10 | 0 |
+| 11 | 11 | 0 |

README.md

@@ -8,7 +8,6 @@ Formally verified implementation of the ARTIQ RTIO core in nMigen
 - `README.md`: this document
 - `shell.nix`: Nix file for setting up the environment for this project
 - `rtio`: RTIO core in nMigen
-- `traces`: History of traces for debugging
 
 ## Progress
 

rtio/sed/output_network.py

@@ -164,6 +164,7 @@ class OutputNetwork(Elaboratable):
                             with m.If(match):
                                 m.d.comb += appeared.eq(1)
                         m.d.comb += Assert(appeared)
+                # Otherwise, TODO
 
             with m.If(f_output_valid):
                 nodes_unique = Signal(reset=1)
@@ -181,6 +182,7 @@ class OutputNetwork(Elaboratable):
                 # are unique then there should be no replacements
                 with m.If(nodes_unique):
                     m.d.comb += Assert(~replacement_occurred)
+                # Otherwise, TODO
 
     def elaborate(self, platform):
         return self.m