decle Posted May 5, 2018 Share Posted May 5, 2018 There seems to have been some interest in ECS projects recently, so I thought I might share something I've been working on: IMDI (Intellivision Music Digital Interface) is a prototype of a combined MIDI interface and Intellivision cartridge. It turns the Master Component / ECS combo into a MIDI instrument. It came about as a result of a converstion with Paul Nurminen of the Intellivisionaries.Currently IMDI runs a modified version JoeZ's Simple Synthesizer for the ECS. This version can take input from either the ECS synthesizer keyboard or a MIDI source and use it to drive the six voices of the ECS.When using a MIDI source, the note velocity is used to set the output volume, making the ECS touch sensitive for the first time. The sound of the Simple Synthesizer has also been sexed up a bit with the addition of a little vibrato and decay.The next step is to replace Joe's Simple Synthesizer with something a little more comprehensive, in an effort to see whether the ECS could have competed with the square wave keyboards of the mid 80s, such as the Yamaha PSS-130 or PSS-160: For those that are interested the micro-controller used is the Teensy 3.2. I used their MIDI interface design, but not their software library as it upsets the timing of the cartridge interface.As always, thanks to Joe and Paul for their help. All comments are most welcome. Cheers decle 11 Quote Link to comment Share on other sites More sharing options...
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