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  "path": "/news/312/nrvpack-3-03-atari-st-executable-compressor",
  "publishedAt": "2026-04-30T22:20:01.000Z",
  "site": "https://news.scene.org",
  "tags": [
    "nrvpack 3.03 — Atari ST executable compressor",
    "https://www.exxosforum.co.uk/nrvpack/",
    "https://www.exxosforum.co.uk/forum/viewtopic.php?t=8312"
  ],
  "textContent": "[ **Atariscne.org - News** ] nrvpack 3.03 — Atari ST executable compressor\n\nexxos has released version 3.03 of nrvpack, a free online executable compression service for Atari ST PRG/APP/TOS/TTP files. Upload a file and get five compressed variants to choose from, each with different size/speed tradeoffs.\n\nThe packer and all 68000 decompression stubs were written from the ground up. Months of development went into the compression engine — including optimal parsing with dynamic programming, lit-cost sweeps, context-width tuning, and extensive testing of preprocessing transforms and encoding strategies to squeeze every last byte out of typical 68k executables.\n\nOn large real-world programs the best format achieves around 2.75:1 compression ratio. A fast-depack option is also available that decompresses in under a second on a stock 8MHz 68000. All formats support colour-cycling raster bars during decompression and run on any ST/STE/TT/Falcon.\n\nThe service is free and requires an exxos forum login.\n\n🔗 https://www.exxosforum.co.uk/nrvpack/\n🔗 https://www.exxosforum.co.uk/forum/viewtopic.php?t=8312",
  "title": "nrvpack 3.03 — Atari ST executable compressor"
}