DSP Emulator v0.21WIP4.2 (2022/12/06) is released. DSP Emulator is a new version of the ZX SPECTRUM +3, ZX Spectrum 128, ZX Spectrum 48, Arcade, Amstrad CPC 464, NES and Game Boy emulator.

DSP Emulator Changelog:
-General
+Fixed - Emulator losses focus and keyboard stop working (Thanks to Neville)
+Updated SDL library to 2.26.1
-Coleco
+Fire button 1 and 2 switched
+Fixed error message loading a cartridge

Download: DSP Emulator v0.21WIP4.2 (2022/12/06)
Source: Here