Xbox:ModXo

ModXo

Information
Founder(s)	ShalX
Contribution(s)	ShalX
Purpose	RP2040 Based Modchip
GitHub	https://github.com/shalxmva/modxo

Modxo

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

Build Circuit

Wiring diagram for the modXo circuit

Note: D0 is only needed by versions different from 1.6 and the LFrame pin connection is only needed by version 1.6. Also, LPC Rebuild is required

Requirements

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

Installation Steps

• Connect Raspberry Pi Pico with BOOTSEL button pressed to a PC and a new drive will appear.
• Copy Modxo.uf2 into the Raspberry Pi Pico drive.
• Reconnect Raspberry Pi Pico with BOOTSEL button pressed, so the previous drive will show up again.
• Copy your BIOS UF2 file into the drive

Packing BIOS

• Go to https://shalxmva.github.io/modxo/
• Drag and drop your BIOS file. (This will work for any compatible bios image, including stock.)
• UF2 file with BIOS image will be downloaded.

Note: Various 'flavors' of this packer are available on the repo, in Python, and GoLang, to be ran locally.