All notable changes to the P2 Knowledge Base project will be documented in this file.
The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.
This release delivers comprehensive documentation extraction from the PASM2 manual, significantly improving the knowledge base quality from 34% to 68% well-documented instructions.
- Extracted documentation from PASM2 manual pages 31-147 covering 146 instructions
- Comprehensive content capture including:
- Detailed explanations and descriptions
- Parameter documentation with types and constraints
- Encoding tables with binary formats
- Timing information (119 instructions)
- Flag effects documentation (37 instructions)
- Usage notes and special cases
- Grouped instruction handling for shared documentation (AND/ANDN, BITC/BITNC, etc.)
- Assembly directive documentation for ALIGNL, ALIGNW, and data declarations
- YAML quality assessment script (
yaml-quality-assessment.py) measuring documentation completeness - Heat map generator with visual documentation coverage analysis
- Grouped instruction analyzer identifying shared documentation patterns
- Field consistency auditor ensuring uniform YAML structure
- Heat map visualization showing documentation coverage by color (green/yellow/red)
- Quality metrics tracking scores from 0-100 for each instruction
- Coverage statistics by instruction groups and categories
- Improvement tracking comparing before/after extraction metrics
- 248 instructions (68.3%) now well-documented, up from ~127 (34%)
- Average quality score improved to 74.9% from ~50%
- 197 instructions meet high quality threshold (80%+)
- 143 instructions enriched with manual extraction content
- AND/ANDN and other grouped instructions synchronized
- Removed incorrect instructions:
- Generic PUSH/POP (don't exist - only PUSHA/PUSHB/POPA/POPB)
- Block markers (DAT/CON/VAR/PUB/PRI/OBJ) mistakenly treated as instructions
- Fixed PUSHA/PUSHB/POPA/POPB descriptions preserving compiler data
- Standardized field names across all YAML files
- Fixed data types (timing.cycles as integer, not string)
- Removed obsolete fields like 'needs_documentation'
- Scripts organized into proper directories:
engineering/scripts/analysis/- Coverage and quality analysis toolsengineering/scripts/extraction/- Manual extraction scriptsengineering/scripts/cleanup/- YAML cleanup and fix utilitiesengineering/reports/- Analysis reports and heat maps
- Top level cleaned - Only versioned documentation remains
- Grouped instruction inconsistencies - 26 instruction pairs synchronized
- Data type errors - 90 timing.cycles fields converted to integers
- Missing brief descriptions - Added to 205 instructions
- Parameter documentation - Enhanced for 161 instructions
- Flag documentation - Added for 171 instructions
- Encoding format cleanup - Standardized across all instructions
- Well-documented instructions: 127 → 248 (+95% improvement)
- Average quality score: ~50% → 74.9% (+50% improvement)
- High quality (80%+): Unknown → 197 instructions
- Poor documentation (<40%): Many → 8 instructions
- Manual extraction coverage: 0% → 39.7%
- Total instructions: 358 valid P2 instructions
- Assembly directives: 12 documented
- Comprehensive (90-100 score): 23 instructions
- Well documented (70-89): 195 instructions
- Good (60-69): 30 instructions
- Fair (40-59): 118 instructions
- Poor (<40): 8 instructions
- Pattern matching for instruction sections in manual
- Content parsing for descriptions, parameters, encoding
- YAML merging preserving compiler-provided data
- Quality validation ensuring completeness
- Backup creation before any modifications
- Required fields (40 points): instruction, syntax, description, etc.
- Description quality (20 points): Length and comprehensiveness
- Brief description (10 points): Summary for quick reference
- Parameters (10 points): Documented operands
- Examples (10 points): Code samples (still needed)
- Technical fields (10 points): Encoding, timing, flags
- 327 files still lack examples - Critical for AI code generation
- PUSHA/PUSHB incorrectly scored as poor (35) despite improvements
- 10 directives need documentation improvement
- 217 instructions not yet extracted from manual
- Add code examples to all instructions
- Extract remaining manual sections
- Complete directive documentation
- Achieve 90%+ quality score average
This release represents the first production-ready version of the P2 Knowledge Base, providing comprehensive documentation for AI-assisted Propeller 2 development.
- Complete AI reference structure at
/ai-reference/v1.0/with machine-readable JSON - PASM2 instruction reference - All 491 instructions with encoding, timing, and semantics (64% complete semantics)
- SPIN2 language specification - Complete operators, precedence table, and core language constructs
- P2 hardware architecture model - COGs, Smart Pins, memory model, and peripheral documentation
- AI discovery manifest (
.ai-manifest.json) with usage hints and capability descriptions - JSON schema validation for all reference files ensuring data integrity
- Terminal Window User Manual - Comprehensive guide for P2 terminal interface and debugging workflows
- Single-Step Debugger Manual - Complete debugging procedures and practical workflows
- AI Privacy Guide - Guidelines for responsible AI usage with P2 development
- Training handout - Condensed privacy guide for workshop distribution
- Source validation framework with JECCS methodology (Conflicts, Questions, Consistency, Quality, Source documentation)
- Comprehensive extraction pipeline processing official Parallax documentation
- Community source integration including p2docs.github.io validation
- Defensive archiving system with backup and recovery procedures
- Download archives in
/releases/archives/:- Complete repository archive
- AI-only reference subset
- User manuals subset
- Release documentation with detailed feature descriptions
- Project methodology documentation for future development
- P2 Silicon Documentation - Complete hardware specification extraction
- PASM2 Instruction Spreadsheet v35 - All 491 instructions cataloged and validated
- PASM2 Official Manual Draft - 9,174 lines extracted with style guide analysis
- SPIN2 Language Documentation - Complete operator and language construct processing
- P2 Boot Process Documentation - Complete startup sequence specification
- p2docs.github.io (Ada's documentation site) - Hardware errata and architectural insights documented
- Forum extractions - Community knowledge integrated where appropriate
- PASM2 Instructions: 491 total identified, 315 with complete semantics (64%)
- SPIN2 Language: 100% operator coverage, complete precedence table
- P2 Architecture: Complete COG model, Smart Pin overview, memory architecture
- Hardware Features: Boot ROM, CORDIC, Streamer/FIFO, Debug system
- Overall Completeness: 80% (up from 55% in V0.1)
- Zero contradictions between processed sources
- Comprehensive cross-referencing between related documentation
- Source lineage tracking with page/section references
- Community validation against real-world P2 usage
- Question exhaustion planning - Sprint planning complete when no questions remain
- Defensive Todo-MCP procedures - Task state protection with automatic backup
- Sprint filtering protocols - Focused execution with scope management
- Session recovery procedures - Robust handling of interruptions
- AI-optimized formatting for LLM consumption
- Trust level categorization (verified, community, unknown)
- Structured JSON with validation schemas
- Educational progression from beginner to advanced concepts
P2-Knowledge-Base/
├── ai-reference/v1.0/ # 🤖 Machine-readable P2 reference (NEW)
│ ├── instructions/ # Complete PASM2 instruction set
│ ├── language/ # SPIN2 language specification
│ ├── architecture/ # P2 hardware model
│ └── schemas/ # JSON validation schemas
├── documentation/manuals/ # 📚 User manuals (NEW)
│ ├── terminal-window-manual.md
│ └── debugger-manual.md
├── documentation/guides/ # 📖 Development guides (NEW)
│ └── ai-privacy-guide-v1.0.md
├── engineering/ingestion/sources/extractions/ # 📄 Processed source documents
├── releases/archives/ # 📦 Distribution packages (NEW)
└── tools/ # 🛠️ Development utilities
- Repository structure reorganized for v1.0 - previous
/ai-reference/v0.1/deprecated - JSON schema format standardized - older formats may not validate
- File naming conventions standardized across all documentation
- Extraction efficiency improved 300% through defensive procedures
- Context management optimized for LLM token usage
- Archive processing streamlined with batch operations
- AI Privacy Guide establishes responsible usage guidelines
- Source validation prevents malicious or incorrect information propagation
- Backup procedures protect against data loss during operations
- Open source MIT license for maximum accessibility
- Educational focus supporting P2 learning at all levels
- AI-ready format enabling automated code generation assistance
- Community contributions pathway established
- 176 PASM2 instructions still need complete semantic documentation
- Smart Pin modes require detailed configuration examples
- Advanced CORDIC operations need expanded coverage
- Inter-COG communication patterns need comprehensive examples
- From v0.1: Update references to
/ai-reference/v1.0/directory structure - JSON consumers: Validate against new schemas in
/ai-reference/schemas/ - Documentation users: New manuals available in
/documentation/manuals/
- Parallax Inc and Chip Gracey for P2 architecture and documentation
- P2 Community for validation, feedback, and community knowledge
- Ada for maintaining p2docs.github.io community documentation
- Contributors to forums, OBEX, and community resources
- Initial repository structure and foundational documents
- Basic extraction framework for P2 documentation
- Preliminary PASM2 instruction processing
- Project planning and methodology documentation
- Git repository initialization
- Directory structure establishment
- Basic documentation templates
- v1.0.0 Complete Archive - Full repository
- v1.0.0 AI Reference - AI-optimized subset
- v1.0.0 User Manuals - Documentation subset
| Version | Status | Support Level | End of Life |
|---|---|---|---|
| 1.0.x | ✅ Active | Full support | TBD |
| 0.1.x | Security only | 2025-12-31 |
For more information, see Releases and Contributing Guidelines.