Add TODO about cycles

src/run/parse/load8/immediate.rs

@@ -38,6 +38,10 @@ fn make_ldnn_data(register: register::Single, data: &[u8]) -> ParseResult {
                 register,
                 value: *value,
             },
+            // TODO: I don't love that the cycles are in a parsing function,
+            // but ultimately I want the cycles to be as close to the opcode as possible
+            // so that it's easier to change. Maybe I can change this once I end up with
+            // more of the instructions complete
             cycles: 8,
         },
         // This can't fail if the previous .get(1) succeeded