In NSF export, after playing a DPCM note, the Vxx value of Pulse 1 resets to V00 for the next pulse note. The Vxx of Pulse 2 is not corrupted. Test case: [nsf Vxx dpcm bug.zip](https://github.com/user-attachments/files/18242090/nsf.Vxx.dpcm.bug.zip) The NSF export bug happens in both main, and https://github.com/Dn-Programming-Core-Management/Dn-FamiTracker/pull/262 rebased on main.
In NSF export, after playing a DPCM note, the Vxx value of Pulse 1 resets to V00 for the next pulse note. The Vxx of Pulse 2 is not corrupted.
Test case: nsf Vxx dpcm bug.zip
The NSF export bug happens in both main, and #262 rebased on main.