SkyEmu is a low level GameBoy, GameBoy Color, Game Boy Advance, and Nintendo DS emulator. Its primary focus is to provide a good user experience through a good mixture of tradeoffs of accuracy, performance, features and usability.
jgb is a low-level, cross-platform Game Boy [Color] emulator with no game-specific logic or hacks. It's not entirely cycle-accurate because the CPU emulation is instruction-based rather than cycle-based, but it should be able to run the vast majority of licensed Game Boy and Game Boy Color games.
Enable "fat" link-time optimizations in the release builds to dramatically reduce executable binary sizes:
It is highly recommended to read the report to get a light introduction to Game Boy emulation. But do be aware, that the Python implementation has changed a lot. The report is relevant, eventhough you want to contribute to another emulator, or create your own.
jgb is a cross-platform low-level Game Boy [Color] emulator with no game-specific logic or game-specific hacks. It is not completely cycle-accurate due to CPU emulation being instruction-based rather than cycle-based, but it should be able to run the vast majority of licensed Game Boy and Game Boy Color games.
Game Boy and Game Boy Color emulation
Support for cartridges using MBC1, MBC2, MBC3, MBC5, MBC7 mappers
Save file / cartridge RAM persistence to disk
Keyboard input and DirectInput gamepad support
Support for the MBC3 real-time clock with persistence to disk
Support for MBC5 rumble cartridges (requires a gamepad with rumble)
Support for the MBC7 accelerometer (requires a gamepad with an accelerometer)
2x fast-forward toggle
Save & load state
Three different color palette options for GB mode (black & white, light green tint, intense lime green)
Option for GBC color correction to more closely mimic how games looked on the Game Boy Color LCD
An emulator and debugger for the Nintendo Game Boy, written in Rust.
Support for DMG (only).
High accuracy (see Test suite below)
Accurate clock frequency: don't sync over frames or sound, but the clock frequency itself.
Battery saves support.
Save and load states.
Time travel backwards in time (Rewind)
Graphical interface for listing roms in a folder.
Debugger with a graphical interface:
Views for disassembly, registers, video RAM, etc...
Statically trace rom for executable memory ranges (and at runtime).
Add breakpoints at read, write, jump or execution of memory addresses.
Step code backwards.
Building and Running
GameRoy v0.2.0 Changelog:
add gameroy bench subcommand.
add a table view for the rom loading UI.
make UI dpi aware.
add a WebAssembly port.
add a Android port.
add button to change the rom folder (but only update config on Android).
fix STOP instruction (e2fb38d)
also load dropped file...
SameBoy v0.15.8 is released. SameBoy is a user friendly Game Boy and Game Boy Color emulator for macOS. SameBoy is extremely accurate and includes a wide range of powerful debugging features, making it ideal for both casual players and developers. In addition to accuracy and developer capabilities, SameBoy has all the features one would expect from an emulator – from save states to scaling filters. An SDL version is also available to Windows and Unix-like systems.
SameBoy v0.15.8 Changelog:
The button mapped to B, on both the keyboard and controllers, can now be used to return from menus in the SDL frontend
Fixed a bug that caused the new Cocoa debugger interface display glitched buttons on newer versions of macOS
SkyEmu is a low level GameBoy, GameBoy Color and Game Boy Advance emulator. Its primary focus is to provide a good user experience through a good mixture of tradeoffs of accuracy, performance, features and usability.
BGB v1.5.10 is released. BGB is a gameboy emulator which runs on Windows.
emulation of the GameBoy, GameBoy Color, and Super Gameboy
accurate emulation of the hardware, based on research with lots of test roms, useful for debugging/rom development. some highlights:
clock exact timing of LCD behavior/state changes
realistic initial ram values - random but with specific bit patterns, and simulated values left by bootroms (for example "nibbler (pd)" depends on this)
accurate emulation of LCD register writes during scanline (prehistorik man, demotronic demo)
emulation of inaccessible VRAM and OAM as on real hardware
10 sprites per line limit
clock exact emulation of sprites causing mode 3 to take longer
correct memory access timing (access happening at the last/second to last clock of an opcode)
accurate emulation of the differences between DMG and GBC, including timing differences, differences in hardware behavior, initial state, etc.
can run a GBC rom as on a DMG, and a...
SameBoy v0.15.6 is released. SameBoy is a user friendly Game Boy and Game Boy Color emulator for macOS. SameBoy is extremely accurate and includes a wide range of powerful debugging features, making it ideal for both casual players and developers. In addition to accuracy and developer capabilities, SameBoy has all the features one would expect from an emulator – from save states to scaling filters. An SDL version is also available to Windows and Unix-like systems.
SameBoy v0.15.5 Changelog:
All CGB revisions, as well as MGB, are now available in the libretro core
The debugger now guides users to use the help command
Both frontends can now selectively mute and unmute each of the 4 audio channels
Both frontends now support cartridge hot swapping
Fixed a bug where the libretro core sometimes ran at an incorrect speed after switching models
Fixed a minor DMA regression
Fixed a bug where the Cocoa Memory...
A new release of mGBA, version 0.9.3 is available. This version is a bugfix release, which contains many important fixes. Importantly, random freezing with the OpenGL display driver, mostly when using fast forward, which had only partially been fixed in 0.9.2, should now be properly fixed. An extensive list of changes follows after the cut.
GB I/O: Fix incrementing SGB controller when P14 is low (fixes #2202)
GB Video: Render SGB border when unmasking with ATTR/PAL_SET (fixes #2261)
GBA SIO: Fix SI value for unattached MULTI mode
GBA Video: Fix backdrop color if DISPCNT is first set to 0 (fixes #2260)
GBA Video: Don’t iterate affine backgrounds when disabled
GBA Video: Delay enabling backgrounds in bitmap modes (fixes #1668)
Hhugboy v1.3.1 is released. HhugBoy is a Game Boy (Color) emulator for Windows, based on GEST v1.1.1 by TM, with added support for unlicensed mappers, Unicode filenames, screenshots and some other stuff.
Hhugboy v1.3.1 Changelog:
New mapper support: New GB Color HKxxxx PCB (used for Pokémon hacks), Vast Fame secondary releases on GGB-81 PCB (and others)
Allow undersized save files to be read (to avoid saves being wiped when an "unlicensed compatibility mode" change results in a RAM size change)
A new release of mGBA, version 0.9.1, is available. This version is a bugfix release, which contains many important fixes for bugs not caught before 0.9.0 was released. Importantly, fixes for save states affecting both GBA and GBC, the OpenGL renderer lagging when fast-forwarding, and improved detection of Pokémon ROM hacks. An extensive list of changes follows after the cut.
ARM: Fix LDM^ with empty rlist (fixes #2127)
Core: Fix first event scheduling after loading savestate
GB Serialize: Fix switching speed modes when loading a state (fixes #2097)
GB: Fix skipping BIOS
GBA Memory: Fix loading Thumb savestates when in ARM mode
GBA Video: Fix window start on modes 3-5 with mosaic (fixes #1690)
GBA Video: Fix mode 3-5 overflow with mosaic (fixes #1691)
GBA: Fix non-USA 1.0 FireRed misdetecting as a ROM hack (fixes #2100)
GBA: Fix crash when ROM loading fails
GBA e-Reader: Fix bitmap short strip scanning
GBA Video: Fix mode 5 frame 1 caching...
e-Reader card scanning
New tool for converting between different save game formats
WebP and APNG recording
Separate overrides for GBC games that can also run on SGB or regular GB
Game Boy Player features can be enabled by default for all compatible games
Frame and I/O viewer support for Game Boy
Bug report tool for gathering information helpful for reporting bugs
Mute option in homebrew ports
Status indicators for fast-forward and mute in homebrew ports
VBA bug compatibility mode for ROM hacks that don’t work on real hardware
Read-only support for MBC6 flash memory
New unlicensed GB mappers: Pokémon Jade/Diamond, BBD, and Hitek
Stack tracing tools in ARM debugger (by ahigerd)
Command scripts for CLI debugger (by...