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@ -148,6 +148,25 @@ the Libreboot project, but this can be done at a future date.
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Other mods (hardware)
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---------------------
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### Modchip (mayumi v4) example
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Click the photo for full size. It shows a Mayumi v4 modchip and Dual Frequency
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Oscillator mod installed (blue board is the modchip and the black board is
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the DFO mod):
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<img tabindex=1 alt="Sony PlayStation (PSOne) console" class="p" src="https://av.libreboot.org/playstation/mayumi.jpg" /><span class="f"><img src="https://av.libreboot.org/playstation/mayumi.jpg" /></span>
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The modchip disables the copy protection and region restrictions. A modchip is
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still advised, even if using an Open BIOS. The Open BIOS could be modified to
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send commands that disable the wobble check, thus invalidating the need for
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a modchip, but even then there are still caveats. Please read:
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<https://psx-spx.consoledev.net/cdromdrive/#cdrom-secret-unlock-commands>
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The most technically correct solution, regardless of which BIOS you have, to
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also install the modchip and DFO board, as shown. More info is written about
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these in the next sections below:
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### Video timings
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The Open BIOS will not implement any DRM, so it's possible that you might boot
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