Search Interactive Dreams

Third effort in complex CD-i Emulation

>> Thursday, October 1, 2009

After CD-Ice (2002) and CD-i Emulator (2005) there is a next interesting effort put in this third CD-i emulation project at MESS. Nobody knows how far it will come but it actually triggers the interest of CD-i Emulator again after three years of silence. We'll try to follow the developments close although I have to repeat cdifan's claim of how complex and difficult emulating the CD-i is, but it's a fact there is a start at MESS. User 'Just Desserts' with the help of cdifan (the author of CD-i Emulator) has done all the great work. Screens ate of the actual new MESS CD-i Emulator.

The technical story: "I'm not really sure how much farther I'll be able to go at this point, though. I'm pretty sure it now wants some sort of communication with the CDIC and SLAVE devices, both of which are completely undocumented, as far as I've been able to find. There are multiple CD-i revisions, all of which are pretty dissimilar, and will require a whole lot of work on a per-machine basis to emulate in MESS. I'm currently emulating the Mono Imodel (Philips 220 F2), which is arguably the simplest out of all of them. There is no MPEG decoder in the original base machines, just an external cartridge that is used by some (but not all) games, hence skirting around the MPEG patent issue for now.

"Of course, the screenshots sit on a throne of lies; it's only because I responded to the BIOS's initial 0xb0000000 inquiry with 0xb0000215. Interestingly, it doesn't seem to actually care about the disc base unless I reply with 0xb0004101, which makes sense as the BIOS I'm dealing with looks for bit 6 to be set in the second-least-significant byte. Ahh, progress.

The Mono I model that I'm emulating consists of an SCC68070-based processor, SLAVE (probably an MCU) + CDIC (both working together for CD tasks), some model of off-the-shelf RTC (I forget which, but it's documented in the driver), and an MCD212 video chip. I just submitted mouse movement support for the CD-i driver. I posted that C-Cube CL-450 documentation on the CD-interactive forums a few weeks ago. Sorry that it wasn't the C-Cube chip used in the CD-i for some reason, but I'm at least postive it was used in the Amiga CD32 MPEG module.

I'd also like to see a metric ton of PCB scans/photos to start towards "identifying" the custom chips in CD-I, although I'd venture to say you've done a ton of work. I see that incog and Arbee have stepped up to the plate, but you need to motivate your fanbase and collectors over at CD-interactive forums."

cdifan: "The SLAVE/IKAT interfaces are pretty simple and mostly deal with basic control of the CD drive (seek, start, stop, etc) and full control of pointing devices (except backside port), front display and buttons, and a small bit of machine control (reset). The difficult part is that these interface are referenced from many different drivers (one for each device type accessible via the SLAVE/IKAT), but it's not inherently hard to emulate, just a lot of work.

The main source of incompatibilities is, in my view, in the register and timing details of the CD+AUDIO controller chips. These chips are undocumented and reverse engineering of drivers only goes so far. I have in a few cases made instrumented drivers to run on the the real hardware and provide me with actual chip register access traces, but this is hard to do, the trace buffers are finite and you quickly drown in the data except for very simple test cases (which running a game with compat probs certainly is NOT).

All Philips-built players contain a download routine in the ROMs that you can use to download whatever you want into the player; it doesn't even have to be OS9. You may want to check out my "cdistub" program (it comes with assembly source) and the host program to go with it, "cdilink" (no source yet). Both can be found in the Downloads section of the CD-i Emulator site; they make it possible to upload the ROMs of any Philips CD-i player to a PC needing only the right cable. No need to burn ROMs :-)"

So far the story updated October 3th. Nobody knows where it will end but it's great news in the small world of CD-i.

0 reacties:

Post a Comment

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

  © Interactive Dreams Version 5 by The Black Moon Project 2013

Back to TOP