jmckiern/nes-emulator

A NES (Nintendo Entertainment System) emulator written in C++

Hi there 👋

nes-emulator's Issues

Add Mapper: MMC3

Replace direct calls to Tick() with dummy reads and writes

I'm not actually sure if this is necessary

Run test roms on CI

Add Mapper: CNROM

Reorganize tests

• Add option to run tests without window
• Add bash/batch script for testing?

Separate (NES) Console class from glfw window

Add ini for controls

Checkout https://github.com/jtilly/inih

Change controller buttons to a std::map

https://stackoverflow.com/questions/138600/initializing-a-static-stdmapint-int-in-c

Implement unsupported/undocumented opcodes

Remove console window

Add auto run of tests

Take screenshot after x number of cycles/seconds and compare the hash of this with a stored hash value

Rework Peripherals

Currently too slow

Remove use of simple arrays for memory

Create constants and use instead of magic numbers

Add Sound support

Swap from SDL to an audio specific library

Fix VBL bug

Currently fails vbl_nmi_timing/vbl_timing with Error 8: Reading 1 PPU clock before VBL should suppress setting

Add Mapper: UNROM

Add frame limiter

Redesign use of log

Separate mappers from gamepak

Add Mapper: MMC1

Add menubar

File
--Open
--Input Settings
--Exit

Potential libraries to use: FLTK/TK

Add multithreading

Display, console, and input all in their own threads

Add support for color emphasis

Including in Monochrome Mode

Add scrolling

Debug build on msvc display bugged

It looks like an incorrect nametable for PPU::LoadBGTile().
This could be due to an uninitialised value

Make code compatible with IDEs and OSs

Add Licence

Instruction 0xf3c5 = BIT 0x58a9 of Ice Climbers

This should be invalid since mapper 0 has no expansion rom

Reorganise code

Folders:

• build/ - made on compilation
• lib/ - external code used - both headers and c++ files (e.g. glfw, Nes_Snd_Emu)
• src/ - Only my code

Make throwing exceptions actually useful

Add Mapper: NROM

Add JoyPad support in GLFW

So a controller can be used instead of the keyboard

Add other code analysis tool to automation

For example: cppcheck, valgrind, lcov, codecov...

Add full sound support

Update README

• Add screenshots
• Mappers supported
• % games supported
• How to build
• How to use

Add automated input for TAS/testing

Sprite hitboxes are ~8 pixels (or maybe just 1 tile?) to right in Mario Bros

This might also explain the lack of similarity on Donkey Kong in the demo between my emulator and Mesen

Check if the two CMake files can be simplified

There's no point in compiling 90% of the files twice...

Donkey Kong different to Mesen

The output for Donkey Kong on this emulator is different to that from Mesen.
Looking at the logs it turns out that this difference is due to a difference in a return value from reading PPUSTATUS $2002 (on the 16336th instruction). Specifically, the difference in bit 7.

This is due to V Blank timing #17.

Add ability for swapping games without having to destroy GamePak object?

Add a second controller