Hello Dmitri
I built an Interface with pic18f14k50 using the pre-compiled HEX file you had provided and I noticed that when I play fast or when I use the pitch bend/Modulation wheels on my keyboard, the interface fails to deliver all midi signals to PC in real time.
Process becomes incomplete and slow.
I re-compiled the source code with MPLAB C18 and tested it with both PIC18F2550 and PIC18F14k50. In both cases the result was same like before. (Slow and incomplete transmission)
Would you please share with us the Pic18f14k50 firmware you yourself use for the 56i v3.2 kit?
Best Regards
Ciro