RR-Net documentation describes a detection algorithm for the MK3 model. The algorithm is supposed to reveal the last four hex digits of the MAC address. According to documentation the MAC address 28:CD:4C:FF:<HI>:<LO> should have the value <HI> stored at $de0c. The default MAC is supposed to be 28:CD:4C:FF:FB:FF. I would thus expect PRINT(PEEK(56844)) to return 251 to match the FB of the default. However, it doesn't seem to work.

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    What does it return? Is it consistent between runs? Across power cycles?
    – ssokolow
    Feb 7, 2021 at 14:44


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