Coffee GB v1.7.13 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:
Coffee GB 1.7.13 adds complete DMG-07 four-player adapter emulation and netplay, deterministic GPS Boy receiver support, and direct 7z archive loading. Four-player sessions now support partial and live rosters, reconnects, rollback recovery, and corrected packet buffering used by F-1 Race.
Other changes
Clarified the GBEmulatorShootout compatibility description in 96c3ebb4 — @trekawek.
Standardized GitHub release title generation and release workflow guidance in 3774d2ce — @trekawek.
Merged pull requests
#299 Add four-player adapter emulation and netplay — @trekawek.
#304 Support GPS Boy receiver — @trekawek.
#305 Support loading ROMs from 7z archives — @trekawek.
Fixed issues
#259 4 player adaptor emulation — fixed by #299.
#302 GPSboy (U) [C].gbc fails to load — fixed by #304.
#301 7zip archive loading — fixed by #305.

Download: Coffee GB v1.7.13
Source: Here