Forum member Offroad recently hit us up with an example project, which is based on the Papilio Pro and the RetroCade Synth. He’s calling it the Really Dumb MIDI Monitor. This deserves a bit of explanation:
For starters, Offroad explains what he means by the term, “really dumb meaning: All the fun stuff like printf(“%02c”, byte) happens in RTL state machines…”
The project includes a simple MIDI parser for note on-/off messages. It remembers the state of all keys (all channels are combined, “omni mode”). Maybe this could be useful for some MIDI music experiments with minimal fuss: Excluding UARTs and FIFO (reused modules), the actual RTL code that does all the work is only about two screen lengths.
Here are a couple of links to the actual examples that he created, so make sure to click through and check them out for yourself.
- Papilio Pro MIDI Monitor – (zip file)
- meepMeep – (zip file) – This one is a MIDI monitor that actually makes an audible impression with an 18-bit saw waveform. Offroad says it sounds like a Farfisa! (See image above) Yikes indeed!
Do any of you guys have anything interesting that you’re working on for the RetroCade? We’d love to hear about it! Feel free to post to the forums, or comment on this post! Right on.
(via the forums, and thanks to Offroad)