A Chip-8 emulator written in C, using ncurses for the display. Written as a little side project, so there are some quick and dirty design decisions in here. It wuold have been better to use a struct for the processor, or to use C++ and make the whole thing object-oriented... but I didn't. Oh well.
Although it's more efficient to use a normal int for most things, I've decided to implement everything "internal" to the Chip-8 as being the exact width it should be. Whether this is a good decision is another matter, but I felt it was better to be as accurate as I could to the specification, at the expense of a little bit of overhead for the host processor to fiddle around with whatever slicing and shifting operations it needs to do to make this work.
See the CHIP-8 Wikipedia article and then read Cowgod's Chip-8 reference page. It's not a processor, I know, but since it behaves like one I'm calling this project an "emulator" anyway.
Requires ncurses. Simply do make. make clean works too, but it's a bit redundant when there's only one file.
./chip8if you don't want to run a program - a bit useless but hey, up to you../chip8 /path/to/program.ch8if you do. I don't know who owns the testing programs I used, so I won't put them here, but a very quick google search will turn up quite a few.
Program will start by drawing the frame that represents the display. To actually begin execution of the processor, press any key.
You should see a complete frame all the way around the display on startup. If you don't, kill the program, make the window bigger, and try again. Resizing while running isn't currently implemented.
Programs that require held down key presses don't work - accessing keyup events is apparently something that requires root permissions, so until I put a workaround in, this is broken.