On our Github repo is ready for use BlackTiger machine. The last step was the Yamaha OPN emulation, it is working well and it needs only some fixes for more speed and quality. The SSG is emulated and all sound effects work well. FM channels work well but they need some fixes because the the emulator resampling more times and it is running slowly. The PPU is working perfectly and I'll add some speedups. The Z80 emulation is very accurate for both cpu. The main Z80 is faster than the second Z80 cpu in Audio SOC. Anyway both are wroking well. Enjoy