Editing Intellivision (section)

===Intellivision II===
[[File:Intellivision-II-Console-Set.jpg|thumb|alt=rectangular gaming console with numerical gamepads connected with short, black spirals|The Intellivision II redesign was much smaller and cheaper to manufacture than the original.]]

In the spring of 1983, Mattel introduced the ''Intellivision II'', a cheaper, more compact redesign of the original, that was designed to be less expensive to manufacture and service, with updated styling. It also had longer controller cords.<ref name=EGM91>{{cite magazine |title=Intellivision|magazine=[[Electronic Gaming Monthly]]|issue=91|publisher=[[Ziff Davis]] |date=February 1997|page=100}}</ref> The Intellivision II was initially released without a pack-in game but was later packaged with BurgerTime in the [[United States]] and Lock'N'Chase in [[Canada]]. In 1984, the Digiplay Intellivision II was introduced in [[Brazil]].<ref name=brasil_historia/> Brazil was the only country outside North America to have the redesigned Intellivision II.

Using an external AC Adapter (16.2V [[Alternating current|AC]]), consolidating some [[Integrated circuit|ICs]], and taking advantage of relaxed [[Federal Communications Commission|FCC]] [[Electromagnetic radiation|emission]] standards, the Intellivision II has a significantly smaller footprint than the original. The controllers, now detachable, have a different feel, with plastic rather than rubber side buttons and a flat membrane keypad. Users of the original Intellivision missed the ability to find keypad buttons by the tactile feel of the original controller bubble keypad.

One functional difference was the addition of a video input to the cartridge port, added specifically to support the System Changer, an accessory also released in 1983 by Mattel that played [[Atari 2600]] cartridges through the Intellivision. The Intellivision hand controllers could be used to play [[List of Atari 2600 games|Atari 2600 games]]. The System Changer also had two controller ports compatible with Atari joysticks. The original Intellivision required a hardware modification, a service provided by Mattel, to work with the ''System Changer''. Otherwise the Intellivision II was promoted to be compatible with the original.

It was discovered that a few Coleco Intellivision games did not work on the Intellivision II. Mattel secretly changed the Exec internal [[Read-only memory|ROM]] program in an attempt to lock out third-party games.<ref>{{cite web|url=http://www.intellivisionlives.com/bluesky/hardware/intelli2_tech.html|archive-url=https://web.archive.org/web/20170609204610/http://www.intellivisionlives.com/bluesky/hardware/intelli2_tech.html|url-status=usurped|archive-date=2017-06-09|title=Intellivision Classic Video Game System / Intellivision II Console|access-date=January 1, 2017}}</ref> A few of [[Coleco]]'s early games were affected but the 3rd party developers quickly figured out how to get around it. Mattel's own ''Electric Company Word Fun'', however, will not run on the Intellivision II due to this change. In an unrelated issue but also due to Exec changes, Super Pro Football experiences a minor glitch where the quarterback does not appear until after the ball is hiked. There were also some minor changes to the sound chip ([[AY-3-8910|AY-3-8914A/AY-3-8916]]) affecting sound effects in some games.<ref>{{cite web|url=http://wiki.intellivision.us/index.php?title=PSG|title=PSG – Intellivision Wiki|website=wiki.intellivision.us}}</ref><ref>{{cite web|url=http://atariage.com/forums/topic/228141-lto-flash-intellivision-flash-cartridge-information/page-53#entry3596200|title=LTO Flash! – Intellivision Flash Cartridge Information – Page 53 – Intellivision / Aquarius|access-date=2017-03-22|archive-date=2017-03-23|archive-url=https://web.archive.org/web/20170323054030/http://atariage.com/forums/topic/228141-lto-flash-intellivision-flash-cartridge-information/page-53#entry3596200|url-status=live}}</ref> Programmers at Mattel discovered the audio differences and avoided the problem in future games.<ref>{{cite web|url=http://intellivisionaries.com/episode-28-space-spartans/|title=Episode 28: Space Spartans|access-date=2017-03-25|archive-date=2017-03-26|archive-url=https://web.archive.org/web/20170326225806/http://intellivisionaries.com/episode-28-space-spartans/|url-status=live}}</ref>