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Rastersoft returns to CD-i /Frog Feast CD-i version resumed *update*

>> Thursday, July 5, 2007

Charles just posted here some new updates about the CD-i version of Frog Feast. "Frog Feast is definitely being worked on again (Thanks Mr. Bivins). The issue remaining is if Frog Feast will use Balboa or be programmed directly at the system level. Programming it at the system level would allow reuse of the code on more games, assuming Frog Feast sold well enough. But, would also take longer to develop. Thanks to cd-i fan, I've got code running outside of Balboa. I am more than likely going to use this method, as I have access to a 8 bit frame buffer. It's just a matter of optimizing the code."

CDoty even hinted at some more plans with CD-i after Frog feast has been finished: "Once Frog Feast is released, I have another game in mind. But, I'll wait until Frog Feast is done before even hinting at it.

Balboa isn't the ideal programming environment for CD-I games. (This probably isn't news to any old CD-I programmer) Thanks to cd-i fan, I've switched to using the CD-RTOS functionality. This gives me direct access to an 8 bit video buffer. Getting decent speed out of the system will be just a matter of optimizing the routines or design. Frog Feast shouldn't take more than a month or two to adapt to the new system. I found an article, from cd-i fan, that discusses the design of The Apprentice. The article discusses how the features were inplemented within the hardware of the CD-I."

Update: "The most difficult part of programming a system is getting the initial code going. I managed, with the help of CD-I Fan, to get some initial code running for the CD-I CD RTOS. The demo does not use any functionality of Balboa. The old demo used Balboa. I converted an old demo to run on the CD-I. It can be downloaded from The demo runs correctly on a NTSC or PAL game system, with the screen centered in either mode. This includes a good starting point for a graphical system for Frog Feast. I got a CDI-370 in today. This will make it easy to test out a game in either NTSC or PAL, since it can be switched between modes,and displays correctly in either mode on the built it LCD." So please report your experiences with this CD-i demo, including the info of your type of CD-i player!

I was pretty disappointed and discouraged at the performance under Balboa. Part of that was me not fully understanding how to use the CD-I hardware. Since switching to the CD-RTOS, I am happy with the performance. And, I understand the hardware a lot better. The load time for the demo should be comparable to Frog Feast. CD-I fan has given me a bunch of tips on speeding up file loading, and the CD-I in general. I will probably implement a compressed file system, which will reduce the load time futher.

Great news! We will follow the trail of developments as close as possible ;)

If you want to know what Frog Feast is all about: Check out this video of the Neo Geo CD version, which is already finished:

Update July 9th: I've uploaded my test report of the Chaos89 Rastersoft CD-i demo, and I made a video of it. Check this post for the results!

20 reacties:

Daan,  July 4, 2007 at 7:51 PM  

what article about the apprentice do you mean?
I'm looking forward to any progress in Frog Feast by the way, CD-i is definately a challenging system :)

Charles July 4, 2007 at 9:42 PM  

This page:

Joe,  July 6, 2007 at 11:14 AM  

excellent news! Thanks for the update!

Charles July 7, 2007 at 5:58 AM  

Ok, in testing out the CD-RTOS routines, I converter on old demo to the CD-I. It can be downloaded from or directly at

I need people to test out this file. It's been tested on a CD-I 370 in PAL and NTSC, and a Philips and Magnavox CD-I 450.

Charles July 7, 2007 at 8:03 AM  

A big thanks goes to CD-Fan who was a big help in getting this to work. He's is the encyclopedia of the CD-I.

Bas July 7, 2007 at 10:49 AM  

Great work, Charles, I downloaded the file and I'll check it with my 490 CD-i player this weekend (probably sunday), I'll post my experiences right here.

Bas July 7, 2007 at 12:27 PM  

*update* the latest info has been added to the Frog Feast news archive!

David,  July 7, 2007 at 12:45 PM  

Good to see Alan back! He posted the following on the Frog Feast blog: "Hi Charles, I've been a cd-i owner for 13 years and posted comments on Blackmoon & Le Monde du cdi. I just wanted to say that I'm SO HAPPY that you are creating a new game for our very much underrated system. I'm sure this game will be a BIG SUCCESS, because cd-i is still popular worldwide (just check out e-bay). I CAN'T WAIT for this game to be released. Do you think it may be ready in time for Christmas? Please please stick with the production - over the years cd-i has had so many games in the pipeline which have never seen the light of day; this has lead to many disappointed cd-i gamers. Put me down as your first order for this game :-)

Very Best Wishes,

Bas July 8, 2007 at 6:43 PM  

Hey Charles, which program have you used to burn the image? I used WinISO and Discjuggler, but both say the file is not a valid image. So either the file is corrupt or I used the wrong program. Any help?

Charles July 8, 2007 at 10:13 PM  

I use Nero, but it's a binary file and should work with any burning software. Are you loading the cue or the bin? It's a Mode2/2352 bin file, same as a PSX disk image, and not an Mode1/2048 iso file.

Charles July 8, 2007 at 10:21 PM  

A workaround would be to use Daemon tools ( to mount the cue file (the bin file is loaded based on the cue file), and do a CD-CD copy in DiscJuggler.

The only version of Daemon tools I've used is 3.47.

Bas July 9, 2007 at 6:37 AM  

Right, I used the Mode 1 option (I don't known the difference between mode 1 and 2), I hope that's it. I'll give it another try tonight! thanks!

Bas July 9, 2007 at 4:40 PM  

Another update about Frog Feast has been added! Charles, I'm checking out the demo right now.

Bas July 9, 2007 at 9:52 PM  

OK Charles, it all worked. I made a video to show how it looks: Look at this post:
The link now is also in the post. Let me know any feedback!

Charles July 10, 2007 at 8:03 PM  

Looks like it's running pretty well. That's good news.

I've updated the Blog about Frog Feast. I should have a demo available in the next day or two. If everything goes well, it should be able to show the game play, minus being able to control the frog. Sound will come after that.

Charles July 11, 2007 at 8:30 AM  
This comment has been removed by the author.
Charles July 11, 2007 at 8:31 AM  

The first working demo of the new Frog Feast is up. There is no user input. But, it does display the credit screens seen in other versions, and the title screen with sprites and text. I haven't implemented input in this version. That is next on the agenda.

Bas July 11, 2007 at 9:06 AM  

Excellent! My first opportunity to test this is friday I guess, but you'll hear the results. So this is somewhat the same as the first CD-i demo we saw last year, only written using a different coding library?

CDoty July 11, 2007 at 2:50 PM  

This has more functionality than the first CD-I demo. Once I add in user input, the game should start playing. Probably with issues, but it should show signs of the game.

This is written using direct calls into the OS, based on the Green Book standard. Wbich is about as low level as you can go on a CD-I player, and still remain in compliance with the Green Book standard.

Sky-John,  July 11, 2007 at 4:36 PM  

Exciting news, can't wait to test it!

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Games 0-F

3rd Degree - PF Magic
7th Guest, The - Philips Freeland Studios
Accelerator - SPC/Vision
Adventure of the Space Ship Beagle, The - Denshi Media Services
Affaire Morlov, L' - Titus
Alfapet - Adatek
Alice in Wonderland - Spinnaker
Alien Gate - SPC Vision
Alien Odyssee - Argonaut
Aliens Interactive CD-i - Dark Vision Interactive
Ange et le Demon, L' - Smart Move
Apprentice, The - SPC Vision
Apprentice 2, The - Marvin's Revenge - SPC Vision
Arcade Classics - Philips ADS / Namco
Asterix - Caesar’s Challenge - Infogrames
Atlantis - The Last Resort - PRL Redhill (Philips ADS)
Axis and Allies - CapDisc
Backgammon - CapDisc
Battle Chess - Accent Media (for Interplay)
Battleship - CapDisc
Big Bang Show - Infogrames
BMP Puzzle - Circle (for ZYX)
Brain Dead 13 - Readysoft
Burn:Cycle - Trip Media
Caesar's World of Boxing - Philips POV
Caesar's World of Gambling - CD-I Systems
Cartoon Academy - Bits Corporation
CD-i mit der Maus - SPC Vision
CD Shoot - Eaglevision Interactive Productions
Change Angels Kick-off - HMO
Chaos Control - Infogrames
Christmas Country - Creative Media
Christmas Country - The Lost Levels - Creative Media
Christmas Crisis - DIMA
Clue - 3T Productions
Clue 2 - The mysteries continue - 3T Productions
Connect Four - CapDisc
Creature Shock - Argonaut (for Virgin)
Crime Patrol - CapDisc
Crow, The - Philips POV
Cyber Soldier Sharaku - Japan Interactive media
Dame was Loaded, The - Beam Software
Dark Castle - Philips POV
Dead End - Cryo
Defender of the Crown - Philips POV
Deja Vu - Icom Simulations
Deja Vu 2: Lost in Las Vegas - Icom Simulations
Demolition Man - Virgin Interactive Entertainment
Demon Driver - Haiku Studios
Discworld - Teeny Weeny Games
Dimo's Quest - SPC Vision
Domino - Wigant Interactive Media
Down in the Dumps - Haiku Studios
Dragon's Lair - Superclub / INTL CDI
Dragon's Lair 2- Time Warp - Superclub / INTL CDI
Drug wars - Crime Patrol II - CapDisc
Dungeons & Dragons - PF Magic
Earth Command - Visionary Media
Effacer - CapDisc
Escape from Cybercity - Fathom Pictures
Evidence - Microids
Falco & Donjon & The Sword of Inoxybur - BMi / Zephyr Studio
Family Games I - DIMA
Family Games II - Junk Food Jive - DIMA
Felix the Cat - Philips Sidewalk Studio
Flashback - Delphine/Tiertex (for US Gold)
Flinstones Wacky Inventions - Philips Funhouse
Fort Boyard: The Challenge - Microids
Frog Feast - Rastersoft

CD-i Games Index G-M

Go - CapDisc
Golden Oldies - SPC Vision
Golden Oldies II - SPC Vision
Golgo 13 - Japan Interactive Media
Great day at the races, A - CD-I Racing, Dove Films, Total Vision
Guignols de l'Info, Les - Canal+ Multimedia / INTL CDI
Heart of Darkness - Amazing Studio (for Virgin)
Hitchhiker's Guide to the Galaxy, The - Philips Kaleidoscope
Holland Casino CD-i - HMO
Hotel Mario - Philips Fantasy Factory
Inca - Coktel Vision
Inca 2 - Coktel Vision
International Tennis Open - Infogrames
Jack Sprite vs. The Crimson Ghost - PF Magic
Jeopardy - Accent Media
Jigsaw - Novalogic
Joe Guard - DIMA
John Dark: Psychic Eye - CapDisc
Joker's Wild!, The - Accent Media
Joker's Wild Jr., The - Accent Media
Kether - Infogrames
Kingdom - The far reaches - CapDisc
Kingdom 2 - Shadoan - CapDisc
Labyrinth of Crete - Philips Funhouse
Laser Lords - Spinnaker
Last Bounty Hunter, The - CapDisc
Legend of the Fort - Microids
Lemmings - DMA Design / Psygnosis
Lettergreep - Wigant Interactive Media
Lingo - SPC Vision
Link - The faces of evil - Animation Magic
Lion King, The - Virgin Interactive Entertainment
Litil Divil - Gremlin Graphics
Litil Divil 2: Limbo Years - Gremlin Graphics
Lords of the rising sun - Philips POV
Lost Eden - Cryo (for Virgin)
Lost Ride, The - Formula (Lost Boys)
Lucky Luke - The video game - SPC Vision
Mad Dog McCree - CapDisc
Mad Dog McCree II: The lost gold - CapDisc
Magic Eraser - Circle (for ZYX)
Mah-Jong - Japan Interactive Media
Making the Grade - 3T Productions
Man Before Man - Cryo
Marco Polo - Infogrames
Mario Takes America - CIGAM
Master Labyrinth - AVM AG/HQ
Mega Maze - CapDisc
Memory Works, The - Compact Disc Incorporated
Merlin's Apprentice - Philips Funhouse
Microcosm - Philips Freeland Studios
Micro Machines - Codemasters
Monty Python's Invasion from the Planet Skyron - Daedalus CD-i Productions
Mutant Rampage - Body Slam - Animation Magic
Myst - Sunsoft (for Cyan)
Mystic Midway - Rest in pieces - Philips POV
Mystic Midway 2 - Phantom Express - Philips POV

Compact Disc Interactive

Compact Disc Interactive

Games N-Z

Name that tune - Philips Fantasy Factory
New Day - Bits Corporation
NFL Hall of Fame Football - Philips POV
Othello - HMO
Pac Panic - Philips ADS / Namco
Palm Springs Open - ABC Sports / Fathom Pictures
Pool - SPC Vision
Pinball - CapDisc
Plunderball - ISG Productions
Power Hitter - ABC Sports / Fathom Pictures
Power Match - Two's Company
Pursue - BEPL
Pyramid Adventures - Compact Disc Incorporated
RAMRaid - PRL Redhill
Return To Cybercity - Fathom Pictures
Riddle of the Maze, The - Fathom Pictures
Riqa - Bits Corporation
Rise of the Robots - Mirage Technologies
Sargon Chess - Spinnaker
Scotland Yard Interactive - AVM AG/HQ
Secret Mission - Microids
Secret Name of Ra, The
Shaolin's Road - Infogrames
Skate Dude - Viridis
Smurfen, De - De Telesmurf - Infogrames
Solar Crusade - Infogrames
Solitaire - BEPL
Space Ace - Superclub / INTL CDI
Space Ranger - Studio Interactive
Special Operations Squadron - SPC Vision
Sport Freaks - SPC Vision
Star Trek - Philips POV
Star Wars: Rebel Assault - LucasArts
Steel Machine - SPC Vision
Striker Pro - Rage
Strip Poker Live - Greenpig Production
Strip Poker Pro - Interactive Pictures
Super Fighter - The Super Fighter Team / C&E
Super Mario's Wacky Worlds - NovaLogic
Surf City - Philips Sidewalk Studios
Tangram - Eaglevision Interactive Productions
Taco's Toyroom Troopers - Creative Media
Tankdoodle - Creative Media
Tetris - Philips POV
Tetsuo Gaiden - Creative Media
Text Tiles
Thieves' World - Electronic Arts
Tic-tac-toe - BEPL
Tox Runner - ISG Productions
Treasures of Oz - Philips Kaleidoscope
Ultra CD-i Soccer - Krisalis
Uncover featuring Tatjana - SPC Vision
Uninvited - Icom Simulations
Video Speedway - ISG Productions
Vinnie the Pinguin - Pandemonium Labs
Voyeur - Philips POV
Voyeur 2 - Philips POV
Whack-a-Bubble - Creative Media
What's it worth - Marshall Cavendish Multimedia / Spice
Who shot Johnny Rock? - CapDisc
Wordplay - BEPL
World Cup Golf - US Gold
Zaak Sam, De - Toneelschool NL
Zelda - The wand of Gamelon - Animation Magic
Zelda's Adventure - Viridis
Zenith - Radarsoft
Zombie Dinos From The Planet Zeltoid - Philips POV

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