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Why We're Protective Of Your Commodore 64 Ultimate FPGA — Commodore Blog

Revision 2f9c6e44-7e55-453e-ab34-e01ee6e165bc · 5/16/2026, 8:25:36 PM UTC
Key
commodore2026fpga
Authors
Bilodeau, Marc
Issued
2026-4
Type
post-weblog
Container
Commodore Blog
Raw CSL JSON
{
  "URL": "https://commodore.net/why-we-re-protecting-your-commodore-64-ultimate-fpga/",
  "type": "post-weblog",
  "title": "Why We're Protective Of Your Commodore 64 Ultimate FPGA",
  "author": [
    {
      "given": "Marc",
      "family": "Bilodeau"
    }
  ],
  "issued": {
    "date-parts": [
      [
        2026,
        4
      ]
    ]
  },
  "accessed": {
    "date-parts": [
      [
        2026,
        5,
        16
      ]
    ]
  },
  "container-title": "Commodore Blog"
}

Claims

  1. Commodore justifies firmware restrictions by saying its hardware roadmap will diverge from Gideon Zweijtzer's standalone Ultimate64, for which Zweijtzer's firmware is built.
    "Our hardware roadmap for the Commodore 64 Ultimate includes board revisions and component changes that Gideon's Ultimate64 firmware has no reason to address, since it's built for his product, not ours. As those two paths diverge, firmware designed for one is increasingly likely to cause costly problems on the other."
    Locator: paragraph: hardware roadmap paragraph · Quote language: en
  2. Commodore acknowledges that the FPGA board at the heart of the Commodore 64 Ultimate was designed by Gideon Zweijtzer.
    "The FPGA board at the heart of the Commodore 64 Ultimate was designed by Gideon Zweijtzer, who first developed and sold his own"
    Locator: paragraph: background paragraph · Quote language: en
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