A GameBoy emulator developed by me.
The main goal of this project is to be able to play Pokemon on my own emulator on various platforms.
Install cargo-make
cargo install cargo-makeverify you have docker or podman installed
cargo make sdlor with more configuration options:
cargo build --release --package magenboy_sdl --features [optional_features]dbg- Enable debuggerstatic-sdl- will link statically to sdl2, On by default
Note to turn off on by default features pass
--no-default-featureswhen building
| Joypad | Keyboard |
|---|---|
| A | X |
| B | Z |
| Start | S |
| Select | A |
| Dpad Up | Up arrow |
| Dpad Down | Down arrow |
| Dpad Left | Left arrow |
| Dpad Right | Right arrow |
Edit the relevant settings in configuration.rs install arm-none-eabi-gcc and then run:
cargo make -e [rpi_revision] rpibm This command will do the folowing:
- Install the rust source to compile for toolchain
armv7a-none-eabihf:
rustup +nightly component add rust-srcUnfurtuantly armv7a-none-eabihf is a tier3 target for the Rust compiler so building for it requires the nightly toolchain - source
Notice We install the
armv7a-none-eabihftarget and not thearmv7a-none-eabitarget, as the later doesn't have support for hardware floats.
- Install Cargo Binutils:
cargo install cargo-binutils
rustup component add llvm-tools-preview- Builds the image
See - LibretroDocs
magenboy [path_to_rom] [other_optional_flags]See - RealMagenBoy
--bootrom [path to bootrom file]- Specify the path for a bootrom, also used to detect the system type to emulate--mode [mahcine type]- Sets the machine type to emualte in case of a missing bootrom (mode can be:CGB- Gameboy color |DMG- Original Gameboy) in case both flags are missing the system to auto detect the machine type--file-audio- Saves the audio to a file--full-screen- Full screen mode--no-vsync- Disable vsync--rom-menu [path to roms folder]- Opens an interactive dialog uopn start to choose the rom from the folder Choose a game with the Joypad bindings (Dpad and A to confirm)--shutdown-rpi- Requiresrpifeature, shutdown the RPi upon shutdown of the program
Currently only Raspberry Pi 4 is supported using the following instructions:
- Format a sd card and make a single
FAT32partition calledboot - Copy the file
config.txtto the root dir of the sd card - Copy the following files from the Raspberry Pi firmware repo onto the SD card:
- Copy
kernel7.imgonto the SD card - Connect all the peripherals (ili9341 display and gpio buttons)
- Insert the SD card to the RPI4 and boot it
Note: Should it not work on your RPi4, try renaming start4.elf to start.elf (without the 4)
on the SD card.
Currently Qemu doesn't support RPI4 in 32 bit mode, so in order to test it I added support for RPI2 mapping.
To change to RPI2 mode build with the rpi2 feature and not the default rpi4 feature.
running with qemu:
qemu-system-arm.exe -M raspi2b -serial null -serial mon:stdio -kernel path_to_elfNote Qemu takes the path to the elf generated by cargo not the image generated by binutils the UART output will be written to the console.
I think that not all the peripherals I use are implemented in QEMU so I used this mainly to debug boot and CPU initialization problems
- Rom (No MBC controller)
- MBC1
- MBC3
- MBC5
- CPU - Cycle accurate CPU
- PPU - Cycle accurate fifo PPU
- Timer - Mostly accurate timer
- APU - mostly accurate APU
- Tests
- Blargg's cpu_instrs
- dmg-acid2
- TurtleTests
- CPU cycle accurate
- mooneye-test-suite
- acceptance/ppu/intr_2_0_timing
- acceptance/ppu/intr_2_mode0_timing
- acceptance/ppu/intr_2_mode3_timing
- acceptance/ppu/intr_2_oam_ok_timing
- APU passes some of blargs dmg_sound tests
- Timer passes most of mooneye-test-suite
- cgb-acid2
- MagenTests
- The Pandocs
- gbops
- The GameBoy Programming Manual
- gbdev gameboy sound hardware
- Hactix's awsome blog post
- Nightshade's awsome blog post
- The Ultimate GameBoy Talk
- Nitty gritty Gameboy timing
- mgba gbdoc