Thanks to Peter van Sebille Doom for the P800 is here in the form of EDoom. The port is supports, game save/load and it has 8 channel sound support and can be configured to either rotate the screen to the left or right. See the full story for some screenshots and more infotmation. Oh and did I mention its free!

The game can be found here http://www.yipton.net/

On this site you will fin information about the controls and the wad files needed to run the game.