For those interested in all of Carmack's clever hacks in the Wolfenstein and Doom source code that made it possible to run these games on PCs of the day, the Ga

For those interested in all of Carmack's clever hacks in the Wolfenstein and Doom source code that made it possible to run these games on PCs of the day, the Game Engine Black Books are a great read (they are also free): http://fabiensanglard.net/gebb/index.html http://fabiensanglard.net/gebb/index.html