run 27
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Aiden
@@ -5639,3 +5639,157 @@ Best current read:
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- no `A0` -> selector values tend to collapse into heartbeat-family
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transients
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- with `A0` -> some selector values can open structured family spaces
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### HE24: Can Something Other Than `A0` Open The `Ex` Selector Surface?
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Goal:
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- Determine whether `A0` is the main gate into the `E8` / `E9` / `EC` selector
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surface, or whether other known meaningful host frames can provide similar
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context.
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Strategy:
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- Keep the selector fixed.
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- Change only the leading context frame.
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- Use a small set of context candidates that have already shown real protocol
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significance elsewhere:
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- `00 00 A0 00 80 7A` as the known-good context
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- `00 00 90 00 80 4A` because `90` has previously behaved like setup/context
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- `00 00 AF 00 80 75` because `AF` has produced structured responses in other
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sequences
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- bare heartbeat `00 00 00 00 80 DA` as a minimal host-present control
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What would count as a hit:
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- a non-`A0` context causing `E8`, `E9`, or `EC` to open the same structured
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branch we normally associate with `A0`
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- a non-`A0` context causing a different but stable structured family
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- all non-`A0` contexts collapsing to heartbeat-family transients, which would
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make `A0` look much more like the main gate
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#### HE24a: `90` As Context For `E8`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 90 00 80 4A" --frame "00 00 E8 40 30 C2" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-90-e8.txt
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```
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#### HE24b: `90` As Context For `E9`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 90 00 80 4A" --frame "00 00 E9 40 30 C3" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-90-e9.txt
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```
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#### HE24c: `90` As Context For `EC`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 90 00 80 4A" --frame "00 00 EC 40 30 C6" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-90-ec.txt
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```
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#### HE24d: `AF` As Context For `E8`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 AF 00 80 75" --frame "00 00 E8 40 30 C2" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-af-e8.txt
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```
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#### HE24e: `AF` As Context For `E9`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 AF 00 80 75" --frame "00 00 E9 40 30 C3" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-af-e9.txt
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```
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#### HE24f: `AF` As Context For `EC`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 AF 00 80 75" --frame "00 00 EC 40 30 C6" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-af-ec.txt
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```
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#### HE24g: Bare Heartbeat Context For `E8`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 00 00 80 DA" --frame "00 00 E8 40 30 C2" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-hb-e8.txt
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```
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#### HE24h: Bare Heartbeat Context For `E9`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 00 00 80 DA" --frame "00 00 E9 40 30 C3" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-hb-e9.txt
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```
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#### HE24i: Bare Heartbeat Context For `EC`
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```powershell
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python scripts/serial_sequence_probe.py --port COM5 --prompt --frame "00 00 00 00 80 DA" --frame "00 00 EC 40 30 C6" --frame "00 00 00 00 80 DA" --frame "00 00 00 00 80 DA" --repeat 2 --frame-interval 0.20 --read-after-frame 0.30 --read-after-group 0.8 --log captures/rcp-context-hb-ec.txt
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```
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Recommended run order:
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1. `HE24c` (`90 -> EC`)
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2. `HE24f` (`AF -> EC`)
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3. `HE24i` (heartbeat -> `EC`)
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4. `HE24a` / `HE24b` (`90 -> E8/E9`)
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5. `HE24d` / `HE24e` (`AF -> E8/E9`)
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6. `HE24g` / `HE24h` (heartbeat -> `E8/E9`)
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That order keeps the most stateful selector (`EC`) first, which should tell us
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quickly whether `A0` is special or whether there is a broader family of context
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openers.
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### 2026-05-13 Non-`A0` Context Ladder Result
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Captures:
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- `captures/rcp-context-90-e8.txt`
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- `captures/rcp-context-90-e9.txt`
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- `captures/rcp-context-90-ec.txt`
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- `captures/rcp-context-af-e8.txt`
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- `captures/rcp-context-af-e9.txt`
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- `captures/rcp-context-af-ec.txt`
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- `captures/rcp-context-hb-e8.txt`
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- `captures/rcp-context-hb-e9.txt`
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- `captures/rcp-context-hb-ec.txt`
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Observed group-1 outcomes:
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| Context -> selector | Result |
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| --- | --- |
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| `90 -> E8` | `07 80 7A 50 26 D1` |
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| `90 -> E9` | `07 80 7A 28 D3 5C` |
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| `90 -> EC` | `07 80 7B 50 26 D0` |
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| `AF -> E8` | `07 80 FA 50 26 51` |
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| `AF -> E9` | `07 80 7A 28 D3 5C` |
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| `AF -> EC` | `07 80 7B 50 26 D0` |
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| `heartbeat -> E8` | `07 80 7A 50 26 D1` |
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| `heartbeat -> E9` | `07 80 7A 28 D3 5C` |
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| `heartbeat -> EC` | no `7B`; initial heartbeat provoked `07 80 40 40 30 ED`, then `EC` stayed heartbeat-only |
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Interpretation:
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- `A0` is **not** the only context opener for the `Ex` selector surface.
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- `90` can stand in as a strong general context opener for all three tested
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selectors:
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- `E8` -> `7A 50 26`
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- `E9` -> `7A 28 D3`
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- `EC` -> `7B 50 26`
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- `AF` can also open meaningful selector branches:
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- `AF -> E9` matched the known `E9` family
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- `AF -> EC` matched the known `EC` family
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- `AF -> E8` shifted to the alternate sibling `FA 50 26` family instead of
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`7A 50 26`
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- Bare heartbeat is enough context for `E8` and `E9`, but **not** for `EC`.
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`EC` still appears stricter and more context-sensitive than the `E8/E9`
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branch pair.
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Best current read:
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- We are not looking at a single hard gate byte.
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- We are looking at a broader **context-opener family**:
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- `A0`
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- `90`
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- `AF`
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- and, for at least `E8/E9`, even bare heartbeat context
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- `E8` and `E9` seem easier to open than `EC`.
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- `EC` may require a stronger or richer context class than plain heartbeat.
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- `AF -> E8 -> FA 50 26` is especially interesting because it suggests the
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context frame can influence **which sibling family** the selector opens, not
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just whether it opens anything at all.
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@@ -290,6 +290,10 @@ Current caution:
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opening their known `7A` branches.
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- At the same time, `A0` is not sufficient to make every branch deterministic:
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a later `A0 -> E9` control repeat returned heartbeat only.
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- A broader non-`A0` context ladder showed that `A0` is not the only opener:
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`90` opened `E8`, `E9`, and `EC`; `AF` opened `E9` and `EC`, and shifted
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`E8` into the sibling `07 80 FA 50 26 51` family; bare heartbeat opened `E8`
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and `E9` but not `EC`.
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## What We Know
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@@ -327,8 +331,9 @@ Current caution:
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- Overall, the evidence is getting stronger for selector-like host entries that
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open related response families, but weaker for a fully reproducible multi-turn
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"conversation" state.
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- `A0` now looks more like part of the selection context than a purely generic
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primer, but its effect is branch-dependent and not fully deterministic.
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- There appears to be a small family of context openers rather than a single
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magic gate byte; `EC` is stricter than `E8/E9`, and heartbeat alone was not
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enough to open it.
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## What We Do Not Know
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@@ -123,28 +123,37 @@ The strongest current "state map" behavior lives here. Certain host-side values
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look less like direct commands and more like selector/context entries that open
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different downstream response families.
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### S4: `A0`-Contexted Selector Space
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### S4: Context-Opened Selector Space
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Current best evidence says `A0` is not always just a neutral primer. On at
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least the `EC` and `E8` branches, it appears to be part of the context that
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opens the family space.
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Current best evidence says the selector surface is opened not by a single magic
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byte, but by a small family of host-side context setters.
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Observed:
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- `A0 + E8` can produce `7A 50 26` family output
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- `A0 + EC` tends to produce `7B`-family output
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- `E8` without `A0` fell back to `07 80 40 40 30 ED`
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- `E9` without `A0` also fell back to `07 80 40 40 30 ED`
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- `EC` without leading `A0` falls back to `07 80 C0 40 30 6D`
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- `90 + E8` produced `7A 50 26`
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- `90 + E9` produced `7A 28 D3`
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- `90 + EC` produced `7B 50 26`
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- `AF + E9` produced `7A 28 D3`
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- `AF + EC` produced `7B 50 26`
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- `AF + E8` produced the sibling `FA 50 26` family
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- bare heartbeat + `E8` produced `7A 50 26`
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- bare heartbeat + `E9` produced `7A 28 D3`
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- bare heartbeat + `EC` did not open `7B`; it stayed in heartbeat-family
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behavior
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Nuance:
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- `A0` is not the only opener.
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- `A0` is not sufficient to make every selector deterministic.
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- A later control repeat of `A0 + E9` produced heartbeat only, even though
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earlier `A0 + E9` runs produced `07 80 7A 28 D3 5C`.
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- `EC` appears stricter than `E8/E9`, because heartbeat alone was enough for
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`E8/E9` but not for `EC`.
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Confidence: high that `A0` is contextual; medium on the exact scope of that
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context.
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Confidence: high that a context-opener family exists; medium-high on the exact
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rules for each selector.
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## `Ex` Selector Neighborhood
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@@ -185,12 +194,18 @@ What we know:
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- reproducible in group 1
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- exact echo of `07 80 7A 50 26 D1` did not advance state
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- host-shaped mirror of `7A 50 26` did not advance state
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- opened by more than one context:
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- `A0`
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- `90`
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- bare heartbeat
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- `AF` shifted this branch to sibling `FA 50 26 51`
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Read:
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- `E8` is the active selector
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- `7A 50 26 D1` is a downstream family response, not yet a meaningful next host
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turn
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- context affects which sibling family `E8` opens
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Confidence: medium-high
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@@ -211,6 +226,10 @@ What we know:
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- without `A0`, `E9` fell back to `07 80 40 40 30 ED`
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- with `A0`, a later control repeat returned only heartbeat, so this branch is
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less deterministic than `E8`
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- also opened by:
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- `90`
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- `AF`
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- bare heartbeat
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Read:
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@@ -236,6 +255,8 @@ or
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Important details:
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- without leading `A0`, `EC` fell back to `07 80 C0 40 30 6D`
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- `90` and `AF` also opened `7B 50 26`
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- bare heartbeat alone did not
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- short and long spacing with `A0` still favored `07 80 7B 50 26 D0`
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- exact `7B` echo once produced:
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- `07 C0 2F 95 09 2E`
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@@ -245,7 +266,7 @@ Important details:
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Read:
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- `EC` is the most stateful selector branch seen so far
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- `A0` seems to be part of its selection context
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- `EC` needs a stronger context class than plain heartbeat
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- `7B` is the most stable downstream family on this branch
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- `FB` is real but currently looks like a sibling observation, not a clear reply
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target
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@@ -262,9 +283,9 @@ S1 host-present/cadence-held
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S2 discovery/query window
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-> selector/context entry
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S4 A0-contexted selector space
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-> E8 -> B1 (7A 50 26 family)
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-> E8 -> B1 (7A / FA family space)
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-> E9 -> B2 (7A 28 D3 family)
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-> EC -> B3 (7B / FB family)
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-> EC -> B3 (7B / FB family space)
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-> E6/E7/EB -> heartbeat-family transient
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-> EA / no-A0-EC -> C0-family transient
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```
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