A CHIP-8/SCHIP interpreter, written in C++17 with the use of SDL2 and Dear ImGui for UI. It's customizable and has debug capabilities!
Written just for fun.
- Full SCHIP support
- Sound support (Waveforms: sine, square and saw)
- Changeable frequency and dB level
- Display colors are in RGB and they can be changed
- Two keypad mappings: the original COSMAC VIP and the modern one (which is used by most other interpreters)
- You can set custom CPU frequency value
- You can change the RANDOM seed (useful for debugging)
- If some games don't have mood to function properly, you can try to make them feel better by touching these quirks:
BNNN: use V0 as the offsetDXYN: horizontal wrappingDXYN: vertical wrapping8XY6&8XYE: set VX to VY8XY1,8XY2and8XY3: reset VFFX55&FX65: increment the I registerDXY0: draw 8x16 sprite in lo-res mode
- Debug capabilities:
- Disassembler
- Set, edit and remove breakpoints (they can also be named)
- View stack
- View and modify registers
- Instruction executor
- Keypad, in which buttons are held until they are released by second click (useful in the STEP mode)
You can build simply by creating build directory, going to it and calling the cmake (e.g. cmake ..)
Optionally, you can install nchip8 by typing sudo cmake --install .
Just type ./nchip8 (or nchip8 if you've installed it)!
For certain games you may like to change the amount of cycles per second, colors, etc.
Ability to optionally disable flickering- Add pixel fading to smooth out the flickering
- Support for SCHIP
- Support for XO-CHIP
- More debug features
- Watch window
- Memory view (and editor)
- Logger
- Add more controls to the existing tools
- CLI options
- Some kind of library that has a list of games, and for each game one can specify quirks and other options.
List of most known CHIP-8 extensions