I'm contemplating adding the C64 to my setup and was curious if there is a cart that can be used the same way as MidiNES or Teensyboy Pro (with MGB) in the sense that I can send MIDI out from my computer to the cart/system to control note parameters as well as what notes to send. I've been doing research but it seems that most people (whether with MSSIAH, Cynthcart, Kerberos, etc) use either an external instrument or the onboard tracker program - and either way, they still seem to set the note parameters within the C64 program on the cart itself prior to sending MIDI data.
So is there a feasible solution to this? What cart would people recommend picking up if I want to be able to draw events into a piano roll (in say, FL Studio) to adjust things like pulse width, attack, decay, etc along with penning the notes being sent via MIDI CC? I have heard this is possible and that too much data shouldn't be sent at once - I'm planning to use the C64 in conjunction with a NES/MidiNES and Gameboy/Teensyboy Pro so I'll likely only utilize one or two channels at a time and won't likely be setting parameters often along the course of a given track. Just want to vary the sound in my tracks a bit and the C64 seems like a great one to add but it all has to work together from MIDI out data from my computer.