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}}The '''[[gametech:Intellivision|Intellivision]]''' was a game console produced by [[Mattel]] in 1979. It had a GI CP1610 CPU at 1 MHz. It had 524B 1472 bytes of RAM , made up of 704 bytes of system RAM (stores the background table, system stack, EXEC variables), 256 bytes of "scratchpad RAM" (of which 16 bytes were unaddressable due to overlap with the sound chip) and 932B 512 bytes of graphics RAM(stores tiles used by background and sprites). It was notably more powerful than the [[Atari 2600 emulators|Atari 2600]], which was released at a similar time, and could be used with a voice synthesizer unit known as the [[wikipedia:Intellivoice|Intellivoice]], which allowed speech in its games.

{{Placeholder The Keyboard Component was an addon meant to convert the Intellivision into a full fledged computer. The keyboard component had 16kb RAM shared with the master component, its own 6502 CPU and a built in tape player. It also had its character generator, able to overlay high resolution text}}on top of the master component's video. While promised since the system's launch, it never got beyond test marketing, selling only 4000 units which Mattel would eventually buy back.Placeholder textThe ECS (Entertainment Computer System) came about due to a FTC lawsuit for Mattel failing to produce the promised computer addon. The ECS was a lot less ambitious, adding a second sound chip which provides IO ports for either an alphanumerical keyboard, a musical keyboard or two additional controllers, an interface for either an external tape player or printer, 2 kilobytes of RAM and a built in BASIC.  * Entries for "ECS*" and "KBC*" in the table above should be explained here.