Quagmire is an emulation of an impossible 8bit processor, where all memory is addressed in 2 dimensions, and is represented by pixel value. Program execution threads can run up, down, left or right. Sections of code are visible in memory, as are the processes as they run. Unlike a normal computer the internal process of the machine is visible. Programs are drawings.
In this system, crashes can be viewed as they occur, processes can write all over each other, or themselves. Lost threads of execution wander through memory, running any data they meander over.