Try this build.
It's HPC Doom, so you'll need a wad (you tried it earlier though)
http://home.freeuk.com/gamefreaks/d_mips.zip
Theres some major updates now though.
1) Put the wad in a folder called 'HPC Doom' (no speech marks)
This can be on a storage card if you wish.
2) IMPORTANT! To activate the MP770 fix, put a file called MP770.fix in the directory you have the wad in. This can be any type of file. My advice is use a blank PocketWord document. Don't forget to change the extension too, so it is NOT MP770.fix.doc.
You'll know if it worked as it'll show on the screen.
3) You must name your wad file according to what type it is. All Doom wad versions are now fully supported.
Call your wad:
Doom1.wad: Shareware
Doom.wad: Registered (3 episodes)
Doomu.wad: Retail (4 episodes)
Doom2.wad: Commercial (DoomII)
Tnt.wad: TNT
Plutonia.wad:Plutonia experiment
Let me know if it works...
What if everything is an illusion and nothing exists? In that case, I definitely overpaid for my carpet. -Woody Allen