run 2

docs/discovery-notes.md

@@ -2338,3 +2338,56 @@ python scripts/serial_direct_response_sweep.py --port COM5 --commands "0x90 0x9F
 python scripts/serial_direct_response_sweep.py --port COM5 --commands "0x90 0xA0" --states 0x00 --values 0x80 --settle 3 --after-each 0.8 --after 3 --log captures/rcp-context-seq-90-a0.txt
 python scripts/serial_direct_response_sweep.py --port COM5 --commands "0x00 0x9F 0xA0" --states 0x00 --values 0x80 --settle 3 --after-each 0.8 --after 3 --log captures/rcp-context-seq-00-9f-a0.txt
 ```
+
+### 2026-05-13 Context Confirmation Result
+
+New captures:
+
+- `captures/rcp-context-repeat-00-a0-b8-bc.txt`
+- `captures/rcp-context-repeat-90-9f-a0.txt`
+- `captures/rcp-context-seq-90-a0.txt`
+- `captures/rcp-context-seq-00-9f-a0.txt`
+
+Observed results:
+
+| Test | Sequence | Observed response |
+| --- | --- | --- |
+| Repeat `00` page | `00 -> A0` | `07 80 68 40 30 C5` |
+| Repeat `00` page | `00 -> B8` | `07 80 6E 40 30 C3` |
+| Repeat `00` page | `00 -> BC` | `07 80 6F 40 30 C2` |
+| Repeat three-frame A0 | `90 -> 9F -> A0` | `07 80 68 40 30 C5` |
+| A0 with `90` only | `90 -> A0` | `07 80 68 40 30 C5` |
+| A0 with `00` then `9F` | `00 -> 9F -> A0` | `07 80 68 40 30 C5` |
+
+Updated interpretation:
+
+- `90 -> A0` is enough to produce the `A0` response
+  `07 80 68 40 30 C5`; `9F` is not required for that page.
+- `00 -> 9F -> A0` also produces `07 80 68 40 30 C5`, so a frame before `9F`
+  can arm the response, but `9F` does not appear to select the alternate `A0`
+  response by itself.
+- The repeat `00 -> A0` result returned to `07 80 68 40 30 C5`, while the
+  previous `00 -> A0` context dataset returned `07 80 E8 40 30 45`. Treat the
+  `E8` response as real but not yet deterministic from the current two-frame
+  model.
+- `00 -> B8` and `00 -> BC` remained stable as `07 80 6E 40 30 C3` and
+  `07 80 6F 40 30 C2`, matching the earlier alternate-page observations.
+
+Current best model:
+
+```text
+The RCP requires at least one setup frame before many query commands respond.
+Some setup/query pairs are stable, for example 90 -> A0 and 00 -> B8.
+Some response differences are still not explained by only the immediately
+preceding frame, so a hidden boot/session/state bit or timing-sensitive page
+selection may also be involved.
+```
+
+Next useful tests:
+
+1. Retest `00 -> A0` several times in a row with a power cycle before each run
+   to measure whether `68` or `E8` is the dominant response.
+2. Try direct pairs for the observed alternate `B8/BC` family:
+   `B8 -> B9`, `BC -> BD`, and `BD -> BE`.
+3. Sweep the `D0-DF` region with the same primer-pair method to see whether the
+   structured discovery table continues after `CF`.