nes-dono is a Nintendo Entertainment System (NES) emulator written in C++ with a graphical interface (using wxWidgets-3). It relies on SDL2 for video, audio and input. It's an attempt at cycle-accurate APU, CPU and PPU emulation. Currently, the CPU implementation is mostly complete and correct, while the APU and PPU implementations could be much improved.

• GUI
• Supported mappers are (AxROM, CNROM, MMC1, MMC3, NROM, UxROM).
• Audio output
• Save data reading/writing
• Save states

• Controller input support (non-functioning due to SDL and wxWidgets not playing nicely together).

The emulator passes the following tests:

• blargg_apu_2005.07.30, but not tests '09.reset_timing' and '11.len_reload_timing'
• blargg_nes_cpu_test5
• blargg_ppu_tests_2005.09.15b
• branch_timing_tests
• cpu_dummy_reads
• cpu_dummy_writes
• cpu_exec_space/test_cpu_exec_space_ppuio
• cpu_timing_test6
• instr_misc
• mmc3_test_2, but not test '6-MMC3_alt'
• oam_read
• oam_stress
• ppu_open_bus
• read_joy3
• scrolltest
• sprite_hit_tests_2005.10.05
• sprite_overflow_tests, but not tests '3.Timing' and '4.Obscure'

C++20 is required for compiling. Current external dependencies are wxWidgets and SDL2. I only supply Visual Studio solution files. The project settings were as follows:

C/C++ -- Additional Include Directories: F:\SDKs\wxWidgets-3.1.3\include\msvc; F:\SDKs\wxWidgets-3.1.3\include; F:\SDKs\SDL2-2.0.12\include

Linker -- Additional Library Directories: F:\SDKs\wxWidgets-3.1.3\lib\vc_x64_lib; F:\SDKs\SDL2-2.0.12\lib\x64;

Linker -- Input -- Additional Dependencies: SDL2.lib; SDL2main.lib;