It is possible to make MIOS with only AIN, DIN, DOUT (may be LCD) support on PIC18F4550 chip?
My project (MIDI control for Traktor) need only this modules.
STM chip is difficult to find. But i want USB support and main core on one chip.
It would be required to overwork MIOS from scratch, e.g. because of overlapping memory ranges and missing support for multiple MIDI ports, resp. MIDI handling which fits with USB requirements (packet based transfers).
All this has been solved with MIOS32, I don’t plan to do the same for old PIC derivatives (especially because it would never work so perfectly like with STM32)
However, if you have advanced programming skills, you could use the MBHP_USB_PIC firmware as basis and add AIN/DIN/DOUT/LCD drivers there - it’s possible, but it will be some effort and it won’t be compatible to the common MIOS8 architecture.
If you are asking me: it isn’t worth the effort, since with MIOS32 a better solution is already available.
STM chip is difficult to find.
It’s available here: http://www.avishowtech.com/mbhp/buy.html
Best Regards, Thorsten.
No shipping in Russia 
I try to add AIN DIN DOUT in USB_PIC firmware. May be it will work 