Coffee GB v1.7.4 is released. Coffee GB is a Gameboy Color emulator written in Java 16 (core) and Kotlin (UI). It's meant to be a development exercise.

Features:
Full support for GB & GBC emulation.
Partial Super Gameboy emulation (borders and palette).
Cycle-exact CPU emulation. Each opcode is split into a few micro-operations (load value from memory, store it to register, etc.) and each micro-operation is run in a separate CPU cycle.
Quite compatible (all the Blargg's tests are passed, although some game still doesn't work)
Rollback-based netplay
MBC1-5 support
Battery saves
Support for zipped ROMs
ROM-based compatibility tests run from Maven

Coffee GB Changelog:
Datel: boot the game through an Action Replay Online (#66) in #92
Emulate the CGB infrared port and the Full Changer (#94) in #95
Emulate the MBC5 rumble motor (#93) in #96
Game-controller support via SDL2 (#78) in #97
Find system SDL2 on macOS so game controllers work there (#78) in #98
Add Daid test suite support and plain ROM+RAM handling in #110
Add integration ROM test suites and related fixtures in #115
Add MBC30 banking support in #116
Fix BullyGB hardware checks in #118
Fix MBC3 real-time clock behavior in #119
Add CGB Acid test to CI in #121
Fix SameSuite hardware timing in #128
Fix Joust & Defender trainer screen in #129
Support BHGOS multicart banking in #130
Blank the first DMG frame after LCD enable in #132
Fix SGB transfer capture timing in #134
Integrate mooneye-wilbertpol suite in #138
Support Bung EMS mapper for Cube Raider in #141
Show the Crazy Castle 3 trainer in #140
Fix Bo Jackson scoreboard rendering in #142
Fix Bomberman Collection SGB graphics in #143
Parallelize integration test profiles and CI in #153
Emulate MainBlow Bung flashcart RAM in #152
Fix Initial D Gaiden STAT interrupt lockup in #150

Download: Coffee GB v1.7.4
Source: Here