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Difference between revisions of "Real-Time Clock"
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| − | The '''Real-Time Clock''' is an internal feature of various games, including those on [[Nintendo]] consoles. As the name suggests, it is a clock with relative accuracy to real-time, and usually progresses even when the power is turned off. It is used to simulate a calendar in the game which uses it, such as the recurring days of the week in [[Pokémon Gold and Silver Versions]] and [[Pokémon Crystal Version]]. | + | The '''Real-Time Clock''' is an internal feature of various games, including those on [[Nintendo]] consoles. As the name suggests, it is a clock with relative accuracy to real-time, and usually progresses even when the power is turned off (although, the time-keeping is not always perfectly reliable). It is used to simulate a calendar in the game which uses it, such as the recurring days of the week in [[Pokémon Gold and Silver Versions]] and [[Pokémon Crystal Version]]. |
==In Game Boy/Color games== | ==In Game Boy/Color games== | ||
Revision as of 05:37, 20 April 2022
The Real-Time Clock is an internal feature of various games, including those on Nintendo consoles. As the name suggests, it is a clock with relative accuracy to real-time, and usually progresses even when the power is turned off (although, the time-keeping is not always perfectly reliable). It is used to simulate a calendar in the game which uses it, such as the recurring days of the week in Pokémon Gold and Silver Versions and Pokémon Crystal Version.
Contents
In Game Boy/Color games
For the Game Boy and Game Boy Color, the Real-Time Clock was typically directly linked with a relatively-short lasting internal battery and a layout where the SRAM would be destroyed if the internal battery for the Real-Time Clock stopped functioning with it.
An example of internal batteries includes the CR1616 cell batteries used in the Game Boy Color games Pokémon Gold and Silver Versions in addition to directly linked with a quartz oscillator and the memory bank controller, such as MBC3) for the Game Boy Color.
Though reported to have a typical life-span of around 6 or more years, the actual life-span is subject to other complications and sometimes can last several years longer.[1] Hence, many Pokémon Game Boy save files today have expired, deleting valuable information (such as rare Pokémon) and in the specific case of Japanese Pokémon Crystal, downloadable content from the Mobile System GB.
=In Game Boy Advance games
Pokémon Ruby and Sapphire Versions also used a Real-Time Clock, but a not directly related software glitch known as the Berry glitch affects the game's internal calendar after playing for 366 days after the game is started, or the internal battery is replaced, causing Berries to stop growing. This was amended through an official patch distributed in various ways, such as through linking to Pokémon FireRed and LeafGreen Versions via the Game Link Cable; fixing the glitch.
However, problems will still occur in those games, if the internal battery itself has expired. The save file is not destroyed in Pokémon Ruby and Sapphire Versions, and Pokémon Emerald Version, resulting in the message "The internal battery has run dry. The game can be played. However, clock-based events will no longer occur."; and causing clock-based events to no longer function like the previously mentioned Berry glitch.
This message (or problem) does not occur in Pokémon FireRed and LeafGreen Versions, as they do not use a Real-Time Clock.
For other games however, the ability to play the game without the Real-Time Clock feature is not always possible. An example is the game Sennen Kazoku, which while a later generation game for Game Boy Advance, is not possible to play if the internal battery is not functioning (perhaps due to the gameplay heavily relying on it, for overseeing the families over generations), instead locking the player out with an error message before the title screen appears.
Amendments to the internal battery issue
Some Nintendo games use a different set-up than earlier problematic designs such as the Real-Time Clock's dependency on its components including the cell battery. Instead of a cell battery, some (and most later games) may use a longer lasting memory designed to last when the game is powered off, such as flash memory instead. In the case of the Nintendo DS, Nintendo 3DS and Nintendo Switch families; the virtual game time may be derived from the setup on the console's firmware instead.
Components used with the Real-Time Clock
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Within the Game Pak:
- ROM, MBC3, RAM, RAM Protector, CR1616 cell battery, quartz oscillator (example: Pokémon Gold and Silver Versions)
- ROM, HuC-3, RAM, RAM Protector, CR1616 cell battery, quartz oscillator (example: Pocket Family GB and the Robopon games by Hudson)
- ROM, TAMA5, MCU, RTC, RAM Protector, quartz oscillator (example: Game de Hakken!! Tamagotchi - Osutchi to Mesutchi by Bandai)
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