Coffee GB v2.0.8 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 2.0.8 improves multiplayer clarity, Android and SGB real-time performance, and fast-CGB link stability.
Highlights
Netplay footers now distinguish the host from clients and number each client in four-player sessions.
SGB and physical-DMG execution batch more safe work across idle, LCD-off, mode-2, multiplayer-input, raster, and border-fade paths. Android audio diagnostics now pre-arm correctly, distinguish real AudioTrack underruns from harmless empty polls, and ship the production ART baseline profile.
Donkey Kong Country's fast-CGB Link-Up negotiation now receives a one-T-cycle phase lead while calibrated DMG and normal-clock arbitration remain unchanged, keeping both players connected in the minigame.
Merged pull requests
#623 Label local netplay host and clients in the footer, by @trekawek
#625 Optimize Android SGB performance and audio continuity, by @trekawek
#627 Fix Donkey Kong Country fast link negotiation, by @trekawek
Fixed issues
#612 Identify host and clients in two- and four-player windows, reported by @ScottNash042
#624 Donkey Kong Country cannot connect to a two-player game, reported by @ScottNash042
Native package signing evidence
linux-x86-64: unsigned
windows-x86-64: unsigned
macos-x86-64: unsigned
macos-aarch64: unsigned
Known platform limitations
On macOS, game controllers require a compatible system SDL2 installation; keyboard input and emulation remain usable without it.

Download: Coffee GB v2.0.8
Source: Here