Xbox:ModXo/es

ModXo

Information
Founder(s)	Shalx
Contribution(s)	Shalx
Purpose	Modchip basado en RP2040
GitHub	https://github.com/shalxmva/modxo

Modxo (se pronuncia "modsho") es un firmware que permite emular el bus LPC, conviertiendo la Raspberry Pi Pico en un modchip para el Xbox Original capaz de correr una BIOS modificada.

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. In addition, LPC rebuild is required.

Requirements

• Working LPC Port
• Original Raspberry Pi Pico or RP2040-Zero (some clone boards are not compatible unless specified otherwise)
• x4 100 Ohm resistors (tested with 1/4 W resistors)

Installation Steps

• Connect your Raspberry Pi Pico to a PC while holding down the BOOTSEL button, and a new drive will appear.
• Copy the latest "Modxo.uf2" firmware onto the root of the mounted drive.
• Reconnect the Raspberry Pi Pico while holding BOOTSEL to bring up the previous drive.
• Copy your BIOS UF2 file into the drive
• Copy over your converted BIOS UF2 file onto the drive.

Packing BIOS

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

Adapter Boards

Note: Current adapter boards are for revisions made before to July 1st, 2024. This is an ongoing in-development project, and new pinouts will be added to allow for further functionality.

• ModzvilleUSA (RP2040-Tiny): https://github.com/modzvilleusa/Modxo-PCB-for-Rp2040-tiny

• SylverReZ (WaveShare RP2040-Zero): https://github.com/m4x10187/Modxo_RP2040_Zero_Adapter