Modxo (pronnounced as "Modsho") is a Xbox LPC Port firmware that converts the Raspberry Pi Pico into an Original Xbox Modchip that allows running a bios.

• Implement device communication (specially with LCD)

• Working LPC Port
• Original Raspberry Pi Pico or RP2040 Zero (There are some clone boards that are not compatible)
• 4 100 Ohm resistors (tested with 1/4 W resistors)

• Note: D0 is only needed by versions different to 1.6
• Note: LFrame pin connection is only needed by version 1.6. Also LPC Rebuild is Required

1. Go to https://shalxmva.github.io/modxo/
2. Drag and Drop your bios file
3. UF2 File with bios image will be downloaded

1. Copy bios file to bios.bin in this directory
2. docker compose up bios2uf2
3. output will be out/bios.uf2

1. Connect Raspberry Pi Pico with BOOTSEL button pressed to a PC and one new drive will appear.
2. Copy Modxo.uf2 into the Raspberry Pi Pico Drive.
3. Reconnect Raspberry Pi Pico with BOOTSEL button pressed, so the previous drive will showup again.
4. Copy your bios UF2 file into the drive

1. Build your base docker image with docker build -t modxo-builder .

1. docker compose run --rm builder
2. output will be out/modxo.uf2

There are also some extra parameters that can be passed to the build script:

• WS2812_LED: ON|OFF - Enables support for WS2812 LEDs (typically present in the RP2040 Zero boards). Default is OFF.

• CLEAN: triggers a clean build. Default is disabled.

• BUILD_TYPE: Release|Debug - Default is Debug.

• BIOS2UF2: path (or glob) to the bios file(s) to be converted to UF2. Default is "bios.bin bios/*.bin".

Example:

WS2812_LED=ON BUILD_TYPE=Release docker compose run --rm builder

1. Copy bios file to bios.bin in this directory or place any bios files in the bios directory
2. docker compose run --rm bios2uf2
3. output will be out/[bios].uf2

1. Just open this project in VSCode and click on the "Reopen in Container" button when prompted
2. Right-click on the CMakelists.txt file and select "Configure All Projects"
3. Build the project by pressing F7