Ethernes, quick try of writing an emu…
Hi ! 
For last two weeks, I worked on a small project of NES emulator for PC. I had never coded an emu before, and it was a great experience and training. I don’t have time to continue this project, and it was designed to be a quick project, for training purposes (before working on Desmume).
Working:
- 6502 core (documented instructions only). All instructions seems to be working.
- PPU cycling and Vblank, BG display (There is a bug with color tables).
Not working:
- PPU sprites.
- Commercial games (even Mario crashes
).
My computer’s CPU is 1,5Ghz and I get a framerate of 150fps with this emu: I think it’s not good, seeing the NES’ cpu is about 1Mhz.
You can have a look at the source code (C++) here: http://thoduv.drunkencoders.com/ethernes/ethernes.zip
If you are skilled in emu developpement, and you see in the code some things that are bad in coding an emu, you can told me !