analysis

Analysis Overview

This directory contains validated and consolidated analysis results for the Building Rescue archive.

Working notes, intermediate hypotheses, and experimental logs are preserved in:

• analysis/work/

Core Analysis

The following documents represent the core technical findings of this project:

• display_pipeline_analysis.md
  → Rendering architecture and grayscale mechanism

• vram_and_display_memory_analysis.md
  → VRAM structure and memory behavior

• sound_system_analysis.md
  → Dual sound system (tone + bitstream playback)

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Recommended Reading Order

For a quick understanding of the system:

1. patch_address_analysis.md
   → Verified corrections to published patch addresses

2. sprite_drawing_analysis.md
   → Core rendering behavior

3. stage_map_analysis.md
   → Game structure and data layout

4. source_rebuild_notes.md
   → Reconstruction methodology

5. cross_development_notes.md
   → Historical development context

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Notes

• Files in work/ include early hypotheses, redundant analyses, and raw investigation logs.
• These are preserved for historical and verification purposes.
• Consolidated documents represent the most reliable conclusions.

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Status

• Real hardware verification: completed
• Binary validation: completed
• Patch corrections: verified