I'm working on a videogame soundtrack for mobile devices (smartphones and such) where size matters, so I'm using midi format for the music.
For style reasons, I'd like the midi files to sound 8-bit/chiptune, like being played by an old console/computer sound chip.
Besides the obvious, like using instruments like square and sawtooth waves (and maybe flute as sine), and keeping the number of tracks and polyphony down to a minimum, I wonder if there is more I can do, specially with the MIDI controls, like reverb, echo, etc...
I'm looking more for the 'quality' of sound rather than any kind of musical arrangement, hence why I ask this here, instead of Music Stack Exchange.
I am aware of programs like GXSCC, but this converts the midi to wav, mp3, etc, and the final file must be a midi.