Xbox:ModXo

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Revision as of 00:35, 2 July 2024 by SylverReZ (talk | contribs)
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ModXo

Modxo.png

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


Modxo

Modxo (pronounced "modsho") is a firmware that emulates an LPC bus, converting the Raspberry Pi Pico into an Original Xbox modchip capable of running a modified 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. 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.