SL9821 v0.3.0.1 is released. SL9821 is a PC9821 Emulator for windows.

SL9821 v0.3.0.1 changelog:
Fixed an issue that sometimes fails to deal with key DOWN / UP events
Corrected problem that sound does not sound after resetting the emulator
Fixed a problem that the sound does not sound when switching audio output with speaker and headphone with macOS

Download: SL9821 v0.3.0.1
Source:Here