Load read-only raw ROM files with bounded size checks and original BIOS boot. Require a machine-step budget and report CPU state, STOP, and explicit diagnostics without opening a window. Keep file access in the desktop crate.
Cover argument parsing, Darwin paths, file boundaries, ARM/Thumb execution, DMA/IRQ budgets, HALT/STOP, and error reports. Document limits and usage. Verified on native Darwin arm64: debug/release workspace tests, core-only tests, Clippy, rustdoc, all ten window smoke tests, and a release raw-ROM run.
Move the README's hardware notes, demo controls, environment setup, test
notes, file map, and references into docs/ and docs/hardware/. The README
is now an overview with a docs index. AGENTS.md gives coding agents a short
map of crates, commands, and where to read and write documentation.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
