Sunday, July 5, 2009

Q&A CD-i Emulator: Interest in particular titles? Wii port?

A few questions to the author of CD-i Emulator.
What products were you involved in developing for the CD-i in its heyday? Do you have a particular interest in emulating those titles first?

"I'm glad you're appreciating the work done on CD-i Emulator; it seems to be somewhat out of fashion. I was involved in two main types of CD-i products: games and educational/professional titles. For several games I did some finish-up programming, but it was never really my area; my involvement was usually on the tech support side for these products (video playback, sound mixing, real-time process scheduling, reclaiming system memory, minimizing system calls, etc).
I did more or less the same for "Frog Feast", again.

On the educational/professional titles I did most of the CD-i programming for a number of titles, some of which I'm quite proud of for their technical achievements. There are also numerous products for which I performed the tech support role. I could list some names, but that would be telling...

I did use some of the above titles as principal testcases for CD-i Emulator; in the early phases of emulation it helped a lot to have a good knowledge of the inner workings of the title being emulated, because it would allow informed guesses as to where the problems where when something hung. Alas, some of "my" titles still don't work, mostly because of the somewhat missing cartridge support (my dev version has a skeleton emulation, but it's not enough yet for these titles). "


How compliant/compatable is Phillips 68000-like cpu compared to the Motorolla 68000 in the Sega Genesis? Besides being 6 or 7 kHz faster? Does it have the same instructions? or more?

"I don't know anything about the Sega Genesis, but I do know the the Philips 68070 CPU is almost a vanilla Motorola 68000, except in a few very dark corners (which the documentation warns against; the system is specified to have "a Motorola 68000 compatible CPU"). It has the same instructions except for a few housekeeping ones. "

I enjoy Wii Homebrew, and I believe the Wii is a proper system for official re releases of CD-i titles because of the Input output systems (and the controller.) Regarding the Wii, is it powerful enough to run your code? And how easy is it to port a CD-i title to another system? Are they any contractual conflicts in porting CD-i titles to other systems?

"Regarding the Wii, interesting that you should mention that. Some time ago I've had some talks with a publisher that was interested in porting CD-i Emulator to the several game platforms, including the Wii, but it didn't work out for various reasons. I think the Wii is powerful enough but it would have to be tested to know for sure.

Porting a CD-i title to another system can be very easy or very hard; it depends highly on the technical details of the title. CD-i video hardware does some exotic things that even modern graphics hardware doesn't, but it can all be emulated in software (as I've proved). The video emulation is actually the most cpu-intensive task of the emulation.

There are contractual conflicts; I believe the distribution rights for most CD-i titles are now owned by Infogrames / Atari. I have no idea what their current thoughts are on ports, whether authorized or even unauthorized. "

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CD-i Games Index A-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

Compact Disc Interactive

Compact Disc Interactive

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 

CD-i Games Index 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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