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timoheimonen/README.md

Timo Heimonen

Systems programming, reverse engineering, and minimalist software.

Retro & Reverse Engineering (Amiga 68k)

Preserving and expanding classic Amiga titles by developing the world's first(community) native in-game editors and performance patches in Motorola 680x0 assembly. All released as open source under the MIT License:

Modern Systems & Performance

  • macOS-memory-benchmark – Low-level command-line tool measuring CPU and Metal GPU memory bandwidth, synthetic LLM decode/prefill traffic, cache/main-memory latency, and TLB behavior on Apple Silicon (C++, ARM64 Assembly, Metal).

Minimalist & Zero-Dependency Web

Lightweight, privacy-focused web tools built without frameworks, trackers, or telemetry:

Stack & Focus: 680x0 Assembly · ARM64 Assembly · C++ · Metal · Modern Web Standards
Philosophy: Bare-metal efficiency, open-source preservation (MIT), zero bloat.

Pinned Loading

  1. macOS-memory-benchmark macOS-memory-benchmark Public

    Low-level command-line tool for measuring CPU and Metal GPU memory bandwidth, synthetic LLM decode and prefill memory traffic, cache and main-memory latency, access-pattern performance, TLB behavio…

    C++ 20

  2. clocksimulator clocksimulator Public

    Clocksimulator.com A clean, sustainable, open-source, embeddable, and fullscreen analog clock. No ads, no tracking, just a beautiful clock.

    HTML 18 3

  3. amiga-stunt-car-racer-060-performance-patch amiga-stunt-car-racer-060-performance-patch Public

    Amiga Stunt Car Racer Performance. 50 Hz physics, 50 FPS & 8.33 Hz timers patch, in game track editor.

    Assembly 6

  4. Amiga-Lemmings-Editor Amiga-Lemmings-Editor Public

    Integrated Level Editor for Amiga Lemmings and Holiday Lemmings 1994

    Assembly 3

  5. amiga-lemmings2-editor-patch amiga-lemmings2-editor-patch Public

    An in-game level editor for the Amiga game Lemmings 2: The Tribes, as a WHDLoad install for a hard disk.

    Assembly 3 1

  6. amiga-cannon-fodder-editor amiga-cannon-fodder-editor Public

    An in-game level editor for the Amiga game Cannon Fodder, as a WHDLoad install for a hard disk.

    Assembly