Posted on December 21st, 2016. In the previous post we looked at how to emulate a CHIP-8 CPU with Common Lisp. But a CPU alone isn't much fun to play, so in this post we'll add a screen to the emulator with Qt. The full series of posts so far: CHIP-8 in Common Lisp: The CPU CHIP-8 in Common Lisp: Graphics CHIP-8 in Common Lisp: Input CHIP-8 in Common Lisp: Sound CHIP-8 in Common Lisp: Disassembly