Hardware
- ECS EXEC/BASIC ROM, containing the built-in BASIC programming language and additional BIOS routines to handle the added hardware features
- additional 2K of system RAM (supposedly, the system could be further expanded to as much as 64K with add-on memory modules, but no such modules ever made it to production)
- additional AY-3-8910 sound chip (this was the same sound chip used in the Intellivision)
- a cassette recorder/printer interface (used the same peripherals as the Mattel Aquarius)
- two additional input ports for the alphanumeric Computer Keyboard, the Music Synthesizer keyboard, or two additional Intellivision Game Controllers.
Read more about this topic: Entertainment Computer System
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