This is a really simple implementation of a Chip8 emulator.

I chose to make it an interpreting and not a recompiling emulator for the sake of simplicity (as a static recompiling one has its downfall for self-modifying code, a dynamic one should be chosen instead - which would mean a lot of work) but I might change this in the future.

Implementation choices:

1. use base size int over short or long
   • reduces amount of code the compiler generates to convert between different integer lengths;
   • may also reduce the memory access time, as some CPUs work fastest when reading/writing data of the base size;
2. use for(;;) instead of while(CPUIsRunning) or while(1)
   • while(CPUIsRunning) can terminate the loop at any moment by setting the variable to 0, which is good, but checking the variable on each pass can waste quite a lot of CPU time;
   • while(1) is clearly a bad choice, as some compilers will generate code checking whether 1 is true or not;
3. make memory read/write directly to an array and not through a function
   • this will avoid the overhead associated with a function call;
   • it is just possible because we are not using, for example, paged memory;