PiPROM | original Xbox EEPROM chip with a Raspberry Pi

You will need to connect the two I2C pins on your Raspberry Pi to the I2C pins on your xbox/I2C chip, as well as a ground wire between the two. The ground wire is very important! It acts as a reference line for the Pi to tell when a GPIO is high or low. If your Pi doesn't have the same ground reference as your xbox your results may be sporatic. The wiring chart below outlines the connections you need to make to connect your Pi to an xbox console. The numbers refer to the RAW pin numbers on the Pi, and the LPC pins on an xbox motherboard. Note that the pins are the same on all versions of the Raspberry Pi (V1, B+, V2). If you are connecting the Raspberry Pi to an I2C EEPROM chip that is not connected to an xbox motherboard you will need to look up the datasheet for the chip to figure out the pinout. You may also need to power the chip using the Pi's 3.3 or 5v lines. Once the tools are installed you will need to power up your xbox console or EEPROM chip, yes, the console needs to physically be turned on. Don't worry, as long as you're not doing anything on your console at the same time that PiPROM is reading/writing to the xbox EEPROM it won't harm anything. If your xbox console frags at boot, or throws a system error, you will only have ~3 minutes to work before it will auto power off. This will be plenty of time for PiPROM to read/write the EEPROM chip.
The first step in getting PiPROM running is to enable the I2C interface on your Raspberry Pi. Adafruit has a very nice tutorial on how to do this.
Once you have the I2C interface up and running on your Raspberry Pi it's time to get it connected to your xbox console. For xbox versions 1.0 - 1.5 it will require 3 wires to be soldered to the LPC port on your xbox motherboard, for version 1.6 it will require a few more connections that are a bit tricky.
To test connectivity between the Pi and the EEPROM chip you can use i2cdetect to scan all I2C slave addresses and see what comes up. If you haven't already, install the i2c tools using the following commands:
Next it's time to get PiPROM on to your Raspberry Pi. We will start by creating a directory for PiPROM and its dependencies. From a command line run the following commands which will create a folder called PiPROM and move you into it.
Now you are ready to starting reading and writing EEPROMs! Below you can find the syntax for PiPROM. Remeber your PiPROM file is currently called PiPROM.a! You will need to run PiPROM using sudo in order for it to be able to access the I2C interface.