Modchip Totally Explained

Everything about Modchip totally explained

A modchip (short for modification chip) is a small electronic device used to modify or disable built-in restrictions and limitations of many popular videogame consoles. It introduces various modifications to its host system's function, including the circumvention of region coding, digital rights management, and copy protection checks for the purpose of running software intended for other markets, copied game media, or unlicensed third-party (homebrew) software.
Modchips are mainly used in CD/DVD based videogame systems due to the availability and low cost of user-writeable media. In addition to games consoles, modchips are also available for some DVD players to circumvent region code enforcement and user operation prohibitions.

Function and construction

Modchips operate by replacing or overriding a system's protection hardware or software. They achieve this by either exploiting existing interfaces in an unintended or undocumented manner, or by actively manipulating the system's internal communication, sometimes to the point of re-routing it to substitute parts provided by the modchip.
   Most modchips consist of one or more integrated circuits (microcontrollers, FPGAs, or CPLDs), often complemented with discrete parts, usually packaged on a small PCB to fit within the console system it's designed for. Although there are modchips that can be reprogrammed for different purposes, most modchips are designed to work within only one console system or even only one specific hardware version thereof.
   Modchips typically require some degree of technical acumen to install. Most commonly, modchips must be soldered to a console's circuitry, either by wires, or by directly soldering the modchip's PCB to the console's circuit ("quicksolder"). Some modchips allow to be installed by the precise positioning of electrical contacts ("solderless") or by being plugged into the system's internal wiring. In very rare cases the interface a modchip connects to is exposed to a system's external interface.
   Memory cards or cartridges that offer functions similar to modchips work on a completely different concept, namely by exploiting flaws in the system's handling of media. Such devices are not referred to as modchips, even if they're frequently traded under this term.

History

Cartridge based console systems didn't have modchips produced for them. They usually implemented copy protection and regional lockout with game cartridges, both on physical and hardware level. Converters or passthrough devices have been used to circumvent the restrictions, later on flash memory cartridges to copy game media became available. Early in the transition from solid-state to optical media, CD based console systems didn't have regional market segmentation or copy protection measures due to the rarity of user-writeable media at the time.
Modchips started to surface with the PlayStation system, due to its popularity and the increasing availability and affordability of CD writers. At the time, a modchips' sole purpose was to allow the use of imported and copied game media.
Today, modchips are available for practically every current console system, often in a great number of variations. In addition to circumventing regional lockout and copy protection mechanisms, modern modchips may introduce more sophisticated modifications to the system, such as allowing the use of user-created software (homebrew), expanding the hardware capabilities of its host system, or even installing an alternative operating system to completely repurpose the host system (for example for use as a Home theater PC).

Anti-modchip measures

Because most modchips open the system to illegally copied media, the availability of a modchip for a console system is undesirable for console manufacturers. They react by removing exploitable interfaces from subsequent hardware or software versions, changing the PCB layout the modchips are customised for, or by actively trying to detect an installed modchip. As many modchips exploit functions in their host system that are required by the system itself to function, the manufacturer's measures may only lead in an adjustment of the modchip's installation process or its programming, or modchip makers trying to find ways to make a modchip undetectable by its host system ("stealth").
With the advent of online services to be used by video game consoles, manufacturers have executed their possibilities within the service's license agreement to ban consoles equipped with modchips from using those services. Also, some console manufacturers have begun to include the option to run homebrew software or even an alternative operating system on their consoles, so that a modchip won't be required for those purposes.

Legality

One of the main functions of many modchips - the circumvention of copy protection mechanisms - is outlawed by many countries' copyright laws such as the DMCA in the USA, the EUCD and its various implementations by the EU member countries, and the Australian Copyright Act. Other laws may apply to modchips, sometimes allowing very specific functions such as region coding circumvention.
Because of the ambiguity of applicable laws and the many diversified functions of a modchip its legality under a country's legislature may only be asserted in court. Only few trials have ended in favor of modchip manufacturers or merchants, and many of the early court decisions have been rendered irrelevant or superseded due to profound changes in many countries' copyright laws.
Also, while not making a final statement on legality, there have been raids and cease and desist orders against modchip manufacturers and merchants on several occasions.

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