A C64 Emulator in C++

The emulation will be operation accurate, but not cycle accurate. I don't think this will be much of an issue, because it only boils down to when an interrupt occurs (stop current operation or finish current operation)

 while( true ){
  t_start = now();
  for cycles in frame
  {
    processInterupts(); 
    CPU->doOperation();
    VICII->doOperation();
  }
  
  transferFrameToX11_Thread();
  t_end = now();
  sleep( frameTime - (t_end - t_start) );
 }

• processInterrupts() will have to collect stuff from both the VICII (Raster Interupt) or the X11_Thread (keyboard interaction?)
• CPU->doOperation() will perform an entire operation in an atomic fashion. Interrupt will happend after the current operation.
• VICII->doOperation() will can stall the CPU, this will increase the "cycles" variable with "stolenCycles"
• There will also be a memory object that will have to be connected. Interrupt will be put into a priority queue.
• XLib will be used to render stuff.

• Basic graphics output via X11: a character ROM is loaded to the correct location and you can run "hello world".
• The CPU is up and running. Instructions have been mostly verified using unittests (no, I don't have coverage results).
• You can run bouncingBall, a small demo using way too many jumps, bouncing a ball across the screen

• Memory map: make sure everything is where it should be, add paging, ...
• Memory map: implement that registers of the VICII are correctly updated from memory writes
• VIC-II: really implement to required display modes, update to the correct colors (the current ones are looking bad).
• SID: sounds make the games so much better
• Kernal: write the kernal functions