Lazr
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The DEBUG port on the Wii actually gives quite good indicators as to what is happening on the Starlet, as boot0, boot1, and boot2/IOS all output to it and it can be used to verify how far a system gets in the boot process if there's no video on screen for whatever reason.
Via pictures are provided if the board is already trimmed. Note that on 4 Layers and Minis, there are two traces instead of vias for two of the DEBUG pins.
6 Layer:
4 Layer:
Mini:
"Ok wtf am I supposed to do with these worthless pinouts?" you may ask, and you have two options:
Changelog:
10/31/25: Forgot about D3 and a D6 via in the 6L via image.
Via pictures are provided if the board is already trimmed. Note that on 4 Layers and Minis, there are two traces instead of vias for two of the DEBUG pins.
6 Layer:
4 Layer:
Mini:
"Ok wtf am I supposed to do with these worthless pinouts?" you may ask, and you have two options:
- Connect them to a logic analyzer and set it to "simple parallel". Set the clock to D7, rising edge.
- stuckpixel's DEBUG sniffer for the RP2040 (aka RPi Pico)
Changelog:
10/31/25: Forgot about D3 and a D6 via in the 6L via image.
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