What about converting a few of these ready made HardFiles to PSP R.I.S.S. Format?
http://www.whdownload.com/games.php?name=%&sort=0&dir=0My suggestions for games from here are:
All New World Of Lemmings (AGA)
Aquatic Games, The: Starring James Pond and the Aquabats "Although, I'm sure we have this already"
Arkanoid "We are in the need for some Arcade stuff"
Arkanoid (NTSC)
Arkanoid: Revenge Of Doh
Beastlord "Haven't played that Demo I have for years"
Body Blows "Yes, we must have a Streets of Rage style game in there"
Body Blows (AGA)
Body Blows Galactic
Body Blows Galactic (AGA)
Bubble And Squeak
Bubble And Squeak (AGA)
Bubble And Squeak (CD32)
Bubble Dizzy
Cannon Fodder
Cannon Fodder (CD32)
Cannon Fodder 2
Cannon Fodder 2 (De)
Cannon Fodder 2 (Fr)
Cannon Fodder 2
Cannon Fodder Plus
Cannon Soccer
Captain Dynamo
Captain Planet And The Planeteers "Although we already have this one, I'm going through the whole lot"
Chuck Rock
Chuck Rock II: Son Of Chuck
Chuck Rock II: Son Of Chuck (CD32)
Cool Spot
Crystal Kingdom Dizzy
Defender (Ratsoft) "If it's that one on the PD Disks"
Defenders Of The Earth "Proper old Cartoon, wonder if the game is any good?"
Deluxe Pacman
Deluxe Pacman (AGA)
Desert Strike: Return To The Gulf
Dizzy - Prince Of The Yolkfolk
Dizzy Collection
Dizzy Panic
Donkey Kong
Dr. Mario
Dyna Blaster
Holiday Lemmings 1993
Holiday Lemmings 1994
James Pond 2: Codename RoboCod (AGA)
James Pond 2: Codename RoboCod (CD32)
James Pond 3: Operation Starfi5h (AGA)
James Pond 3: Operation Starfi5h (CD32)
James Pond: Underwater Agent
Jungle Strike (1 MB)
Jungle Strike (2 MB)
Jungle Strike (CD32)
Jurassic Park
Jurassic Park (AGA)
Knightmare "If it's a game version of that Challenge TV/ITV show"
Krusty's Super Fun House "Everybody loves The Simpsons"
Lemmings (1 Disk)
Lemmings (2 Disk)
Lemmings (CDTV)
Lemmings 2: The Tribes (1 MB)
Lemmings 2: The Tribes (512 KB)
Lotus Esprit Turbo Challenge
Lotus Esprit Turbo Challenge (CD32)
Lotus III: The Ultimate Challenge
Lotus Turbo Challenge 2
Lotus Turbo Challenge 2
Magicland Dizzy
Micro Machines
Mortal Kombat
Mortal Kombat (Censored)
Mortal Kombat II (1 MB)
Mortal Kombat II (2 MB)
Mr. Nutz: Hoppin' Mad
New Year Lemmings 1991/92
Not Very Festive Fodder
Oh No! More Lemmings
Primal Rage (AGA)
Puggsy
Rick Dangerous
Rick Dangerous II
Rise Of The Robots (AGA)
Rise Of The Robots (CD32)
Road Rash
Sensible Golf
Sensible Soccer 92/93 Meets Bulldog Blighty
Sensible Soccer v1.1 - European Champions
Sensible Soccer v1.1 - European Champions - 92/93 Season
Sensible Soccer v1.2 - International Edition: World Champions
Sensible Soccer v1.2 - International Edition: World Champions (CD32)
Sensible Train-spotting
Sensible World Of Moon Soccer
Sensible World Of Soccer
Sensible World Of Soccer 95/96
Sensible World Of Soccer 95/96 - European Championship Edition
Sensible World Of Soccer 96/97
Sensible World Of Soccer 97/98
Sensible World Of Soccer v1.1
Sensible World Of Soccer World Cup 98
Shadow Fighter
Shadow Fighter (AGA)
Shadow Fighter (CD32)
Shadow Fighter (CD32)
Simpsons, The - Bart vs. The Space Mutants (1 Disk) "Try to find 2 Disk if you can"
Simpsons, The - Bart vs. The World
Skidmarks
Skidmarks (AGA)
Speedball
Speedball 2: Brutal Deluxe (CD32)
Star Wars
Star Wars: Return Of The Jedi
Street Fighter
Street Fighter II: The World Warrior
Striker (Rage)
Stunt Car Racer
Stunt Car Racer TNT (The New Tracks)
Stunt Track Racer
Super Skidmarks (CD32)
Super Street Fighter II Turbo (AGA)
Super Street Fighter II Turbo (CD32)
Super Street Fighter II: The New Challengers
Super Street Fighter II: The New Challengers (AGA)
Treasure Island Dizzy
Treasure Island Dizzy (CD32)
Unsensible Soccer
Worms (1 MB)
Worms (2 MB)
Worms (CD32 1 MB)
Worms (CD32 2 MB)
Worms: The Director's Cut (AGA)
X-Mas Lemmings (Demo 1991)
X-Mas Lemmings (Demo 1992)
Zool 2
Zool 2 (AGA)
Zool: Ninja Of The ''Nth'' Dimension
Zool: Ninja Of The ''Nth'' Dimension (AGA)
Zool: Ninja Of The ''Nth'' Dimension (CD32)
And a few more not on the site.
WWF WrestleMania "Since the regular ADF format doesn't work, so lets try this way instead?"
WWF European Rampage "Same as the above"
Assasins PD Collection
Angula PD Collection