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− | + | [[File:Intellivision_Console.jpg|thumb]]The Intellivision is a video game console released by Mattel in 1979. Development of the console began in 1978, less than a year after the introduction of its main competitor, the Atari 2600. The word intellivision is a portmanteau of "intelligent television". Over 3 million Intellivision units were sold and a total of 125 games were released for the console. | |
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==Intellivision II== | ==Intellivision II== | ||
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Mattel also changed the Intellivision II's internal ROM program (called the EXEC) in an attempt to lock out unlicensed 3rd party titles. To make room for the lock-out code while retaining compatibility with existing titles, some portions of the EXEC code were moved in a way that changed their timing. While most games were unaffected, a couple of the more popular titles had certain sound effects that the Intellivision II reproduced differently than intended, although the games remained playable. Mattel's attempt to lock out competitors' software titles was only temporarily successful, as the 3rd-party game manufacturers quickly figured out how to get around it. | Mattel also changed the Intellivision II's internal ROM program (called the EXEC) in an attempt to lock out unlicensed 3rd party titles. To make room for the lock-out code while retaining compatibility with existing titles, some portions of the EXEC code were moved in a way that changed their timing. While most games were unaffected, a couple of the more popular titles had certain sound effects that the Intellivision II reproduced differently than intended, although the games remained playable. Mattel's attempt to lock out competitors' software titles was only temporarily successful, as the 3rd-party game manufacturers quickly figured out how to get around it. | ||
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==Add-on== | ==Add-on== | ||
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*[[Keyboard Component]] | *[[Keyboard Component]] | ||
*[[System Changer]] (Intellivision II only) | *[[System Changer]] (Intellivision II only) | ||
− | + | <gallery widths="200" position="center" spacing="small" orientation="square"> | |
− | <gallery> | ||
Intv system original.png|Intellivision with all addons | Intv system original.png|Intellivision with all addons | ||
Intv II system.png|Intellivision II with all addons | Intv II system.png|Intellivision II with all addons | ||
</gallery> | </gallery> | ||
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==Clones== | ==Clones== | ||
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*GTE-Sylvania Intellivision | *GTE-Sylvania Intellivision | ||
*INTV Master Component (also called INTV System III and the INTV Super Pro System) | *INTV Master Component (also called INTV System III and the INTV Super Pro System) | ||
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[[Category:Console]] | [[Category:Console]] | ||
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