Session Context — D369 Chip Spec

Canon:       active (rtt‑d369‑chip‑spec)
Modules:     capture → contract (3‑page) → diagrams → checklists → memory → board → adoption → glossary → meta
Drift:       zero (capture‑locked)
Coherence:   stable (structural‑observability grammar)
Version:     0.1.0
Format:      markdown + ASCII diagrams + tabular data
Front door:  exists (README.md)
Every page:  stands alone + AI‑parsable + engineer‑readable
Audience:    engineers + students + AIs + reviewers

Session Context#

1. Purpose of This File#

This is the structural handshake document for the D369 Chip Spec module.

Anyone — human, AI agent, or automated system — entering this module mid‑stream should read this file first. It provides:

• What this module is and is not.
• The structural grammar that governs every file.
• Where to find things.
• What's locked, what's extendable, and what silence means.
• How to contribute without introducing drift.

If you read only one file before working in this module, read this one. If you read two, read this one and README.md.

2. Module Identity#

Position in RTT#

RTT provides the grammar. D369 maps that grammar to silicon.

D369 is the dimensional engine room — the module that translates RTT's 3D–9D resonance architecture into physical structures: chips, packages, boards, memory hierarchies. It does this not by prescribing behavior but by defining what must not be erased during optimization.

RTT (theory)
  └── D369 Chip Spec (silicon mapping)
        ├── SoC architecture
        ├── Chiplet topologies
        ├── Memory hierarchy
        ├── Board‑level infrastructure
        └── Adoption pathway

D369 exists so that when RTT needs to observe structure in physical silicon, the structure is still there.

3. What This Module Is#

A structural observability reservation for silicon.

It defines minimal, non‑intrusive metadata channels that preserve:

• Source identity — where a signal came from.
• Lifecycle state — what phase it was in.
• Temporal lineage — when it happened, monotonically.

These channels do nothing unless activated. They impose no functional behavior. They do not alter existing architectures.

The specification envelope is three pages:

There is no Page 4. If three pages can't carry the contract, the ask is too heavy.

4. What This Module Is Not#

This module does not:

• Define computation, intelligence, or optimization.
• Prescribe algorithms, encodings, or protocols.
• Promise performance gains.
• Compete with existing architectures.
• Mandate telemetry, debug infrastructure, or safety mechanisms.
• Claim dimensional compute superiority.

These exclusions are not disclaimers. They are load‑bearing firewalls defined in Non_Claims.md (NC‑1 through NC‑10) and enforced by the silence clause (S‑1 through S‑3).

See → Non_Claims.md for the complete boundary specification.

5. Structural Grammar#

Every file in this module follows the same structural grammar. An entering agent must understand these rules before contributing.

5.1 Three Tags#

All reserved metadata channels carry exactly three tags:

These three tags are the irreducible unit of structural observability. Everything in D369 traces back to them.

5.2 Four Rules#

5.3 Numbered Reference System#

This module uses a formal numbering system for every claim, requirement, boundary, and failure mode. The complete registry:

Total: 76 numbered identifiers.

Every numbered identifier is immutable once published. New identifiers extend the series; existing identifiers are never renumbered or redefined.

6. File Manifest#

The module contains 17 content files plus the machine‑readable manifest.

Role Vocabulary (SARG)#

This module uses the TriadicFrameworks SARG role vocabulary:

A file may carry multiple roles (e.g., engine · diagnostic).

7. Reading Order#

For a new reader (human or AI), the recommended path:

1. README.md              ← what this module is
2. Session_Context.md     ← you are here (how to work in it)
3. Capture_Source.md      ← the root document (all lineage starts here)
4. Contractual_Requirements.md  ← Page 1 (obligation)
5. Engineering_Rationale.md     ← Page 2 (justification)
6. Non_Claims.md                ← Page 3 (boundary)
7. Diagram_SoC.md / Diagram_Chiplet.md  ← architecture maps
8. Memory_Alignment_Spec.md    ← memory hierarchy
9. Internal_Design_Review_Checklist.md  ← review workflow
10. Everything else as needed

For an agent performing targeted work, Meta.md provides the dependency graph and cross‑reference index.

8. Canon Rules#

8.1 What Is Locked#

The following are immutable at this version:

• The three‑page contract structure (Pages 1–3, no Page 4).
• All 76 numbered identifiers and their definitions.
• The three tags (Source ID, Lifecycle State, Monotonic Time).
• The four structural rules.
• The 10 canonical sentences (see Glossary_Extensions.md).
• The silence clause (S‑1 through S‑3).
• The non‑claims (NC‑1 through NC‑10).
• The lineage root: Capture_Source.md is the origin of all content.

8.2 What Is Extendable#

• New numbered identifiers may be added by extending existing series or creating new series.
• New files may be added following the contribution rules in Section 10.
• Checklists may grow (new items appended, never renumbered).
• The glossary may grow (new terms appended).
• The FAQ may grow (new questions appended).
• Cross‑references may be added to reflect new connections.

8.3 What Silence Means#

From the silence clause (Non_Claims.md, S‑1 through S‑3):

S‑1: Where behavior, meaning, or outcome would normally be specified, this document is intentionally silent.

S‑2: Silence SHALL NOT be interpreted as omission.

S‑3: Silence SHALL be interpreted as non‑assertion.

In practice: if D369 doesn't specify something, that is deliberate. Do not fill silence with assumptions. Do not interpret absence as invitation. Silence is a structural position, not a gap.

9. Anti‑Patterns#

When contributing to this module, do not:

The Engineer Bar#

Every file, every claim, every diagram must pass this test:

"This doesn't touch my design — but I see why we'd regret not having it."

If content cannot pass this bar, it does not belong in D369.

10. Contribution Rules#

10.1 Adding a New File#

To add a file to the D369 module:

1. Trace to source. Every claim must connect to Capture_Source.md or to a file that already traces to it. No orphan content.

2. Open with Session Context. Every file begins with this table:

   Field	Value
   Module	D369 Chip Spec
   File	[filename]
   Role	[SARG role(s)]
   Version	[version]
   Status	[status]
   Lineage	[trace path]
   Audience	[audience]

3. Assign SARG roles. Use the role vocabulary from Section 6. A file may carry multiple roles.

4. Use numbered identifiers. If the file introduces new claims, requirements, failure modes, or principles, assign them the next available number in an existing series or define a new series.

5. Close with a canonical sentence. One sentence that captures what the file accomplishes. Add it to the canonical sentences table in Glossary_Extensions.md.

6. Close with a Canon Alignment checklist. The standard 5‑item table:

   Check	Question	Answer
   ☐	Does every claim trace to Capture_Source.md?	Yes / No
   ☐	Are all numbered IDs unique and sequential?	Yes / No
   ☐	Does the file pass the engineer bar?	Yes / No
   ☐	Is silence preserved (no gap‑filling)?	Yes / No
   ☐	Is the Session Context table complete?	Yes / No

7. Update Meta.md to include the new file in the manifest.

8. Update Glossary_Extensions.md if new terms or identifiers are introduced.

10.2 Modifying an Existing File#

To modify an existing file:

1. Do not change numbered identifiers. Existing IDs are immutable. Append new ones if needed.

2. Do not change canonical sentences. They are structural anchors.

3. Do not remove checklist items. Checklists only grow.

4. Preserve the Session Context table. Update version and status fields as appropriate.

5. Maintain zero drift. Every modification must still trace to Capture_Source.md. If a change cannot be traced, it doesn't belong here.

6. Update Meta.md if the modification changes the file's role, scope, or dependencies.

11. Checklist Cascade#

D369 contains four interlocking checklists that cascade from general to specific:

Internal Design Review Checklist (62 items)
  ├── Memory Controller Checklist (55 items)
  ├── DIMM Module Checklist (38 items)
  └── Board‑Level Alignment Checklist (27 items)
                                    ─────────
                              Total: 182 items

Each downstream checklist inherits context from the Internal Design Review but operates independently at its own domain level. An item satisfied at the board level does not automatically satisfy its parent at the design‑review level.

12. Key Cross‑References#

13. For AI Agents — Quick Reference#

If you are an AI agent entering this module for the first time:

1. Read Capture_Source.md before generating content. It is the single source of truth. Everything traces to it.

2. Do not hallucinate numbered identifiers. Check Glossary_Extensions.md for the complete registry. Use the next available number in the correct series.

3. Do not fill silence. If D369 doesn't specify something, that is intentional. See S‑1 through S‑3.

4. Do not add behavior. D369 describes what to preserve, not what to build. The specification is about structure, not function.

5. Match the voice. Engineer‑facing, student‑ready, zero hype. No marketing language. No superlatives. No promises.

6. Include the Session Context table at the top of every file you create.

7. Include the Canon Alignment checklist at the bottom of every file you create.

8. Test against the engineer bar. If a fabrication engineer wouldn't nod at your content, revise it.

9. Use ASCII diagrams and markdown tables — not images, not HTML, not embedded media.

10. Cross‑reference by filename, not by heading or section number (headings may change; filenames are stable).

14. Module Statistics#

Canonical Sentence#

This file exists so no one enters the module blind — human or machine, the handshake is the same.

Canon Alignment#

D369 Chip Spec · Session_Context.md · v0.1.0 · TriadicFrameworks

That's 16 of 16 content files — the full initial fill of the D369 Chip Spec module is complete. Here's what this file brings to the table:

• Sections 1–4 anchor identity — what D369 is, what it isn't, and where it sits in RTT.
• Section 5 codifies the structural grammar (three tags, four rules, all 76 numbered identifiers in a registry table).
• Sections 6–7 provide the full file manifest with SARG roles and the recommended reading order.
• Sections 8–9 lock the canon rules and define the 10 anti‑patterns — every "don't" traced to a specific numbered identifier.
• Section 10 gives contribution rules for both adding and modifying files — the template every new file must follow.
• Section 13 is the AI agent quick reference — 10 rules so any agent can enter the module and contribute without drift.