On Hardware

Hardware contracts and bring-up across Fidelity targets. Each page distinguishes current implementation evidence from proposed extensions and from behavior verified on a device.

• Fidelity on MCU: direct RA6M5 startup, MMIO, and the HelloBlinky vector milestone.
• Clef on Metal Extended: substrate requirements and the actual Farscape/toolchain boundary.
• CPU cache design and GPU cache design: layout and ownership facts, proposed optimizations, and measurement limits.
• Scheduling on Metal: hosted Ariel evidence and the remaining freestanding contract.
• Storage on Metal: durable-storage design and target atomicity/recovery obligations.
• Bring-Up Beyond the CPU: FPGA, NPU, GPU, and display artifact/acceptance boundaries.

The memory-across-substrates discussion continues in Memory Fabrics. Hardware facts belong in versioned platform declarations with manual or schematic provenance. Build and device results belong with the exact source, toolchain, and artifact they validate; these explanatory pages link that evidence rather than silently generalizing it.