Inside Apple’s M1 Chip: A 350‑Page Reverse‑Engineering Deep Dive
A former Apple developer has released a 350‑page reverse‑engineering report that dissects the M1 ARM chip’s architecture, performance, and cache design, offering detailed experiments, patent analysis, and insights for readers with strong CPU knowledge while highlighting the challenges of opening Apple’s closed hardware ecosystem.
Apple’s M1 chip stunned the tech world with its high IPC and energy efficiency, shifting attention from x86 to a high‑performance ARM architecture.
Because Apple keeps the platform closed, using M1 hardware typically requires macOS, making alternative OS support difficult.
Nevertheless, engineers have managed to run Linux fully on M1, and former Apple QuickTime developer Maynard Handley recently released a 350‑page PDF that reverse‑engineers the M1 ARM chip.
The report (version 0.70) examines the architecture from a reverse‑engineering perspective, supported by the community, and includes the author’s own experiments, patent analysis, and extensive documentation.
It aims at readers with strong CPU knowledge, providing detailed discussions of L1 cache, experimental results, and references to many patents and papers, while acknowledging that some sections are speculative or untested.
Handley hopes the document will serve as a foundation for future work on Apple silicon, including upcoming M2 chips, and help open up traditionally closed hardware platforms.
The PDF can be downloaded from the provided Google Drive link (access may require a VPN).
Signed-in readers can open the original source through BestHub's protected redirect.
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