Review week 50: big projects

A week of planning before building. For review:

• Planning: requirements numbered and testable, separated into must, would be nice and must never happen. Device list and naming scheme “Room_Function” and “System_Value”.
• Splitting: by responsibility, every device has exactly one controlling chip, status words with ins.
• Interfaces: addresses with writer, meaning and range, a data bus with get and put, a version number every chip checks.
• Testing: subsystems one by one, then pairs, then failures. A test mode replaces the reading in the game.
• Rollout: the most important last, shadow mode with release, fallback, watching.

You pass from 60 %.