* CPU: 16-bit 68070 CISC Chip at 15.5 MHz
* RAM: 1.5MB (main)
* Graphic Modes: 384 x 280 up to 768 x 560
* Colors: 16.7 million (palette), 32,768 (on screen)
* Sound: ADPCM eight channel sound, 16-bit stereo sound
* Peripherals: MPEG 1 Cartridge Plug-In for VideoCD and Digital Video, I/O port splitter, S-video cable
* Controllers: CD-i mouse, Roller controller, CD-i trackball, Touchpad controller, Gamepad controller (Gravis PC GamePad), IR wireless controller
* OS: CD-RTOS (based on Microware's OS-9)
(Specifications above refer to Philips players. The general CD-i specs only required a player to have a 68000-based CPU running at least at 15 MHz, at least 1 MB of RAM, a single speed CD-drive, dedicated audio and video decoding chips, at least 8 KB of non-volatile storage memory and the dedicated operating system called CD-RTOS.)
MESS supports CD-ROM images in .chd format for cdi emulation, using the "cdrom" (cdrm) device (read this tutorial by Guru -- http://www.mameworld.net/gurudumps/tutorials/dumping_cds_&_hdds/index.html to learn how to create an accurate CHD from your CD-i CD-ROM).
History and Trivia
CD-i, or Compact Disc Interactive, is the name of an interactive multimedia CD player developed and marketed by Philips. The system was using a custom standard for multimedia CDs, called CD-i or Green Book, which was co-developed by Philips and Sony in 1986. The first Philips CD-i player, released in 1991, is capable of playing interactive CD-i discs, Audio CDs, CD+G (CD+Graphics), and all kinds of Video-CDs (both Karaoke-CDs 1.0 and Video-CDs 1.1 and 2.0), though the latter requires an optional "Digital Video Card" to provide MPEG-1 decoding.
In addition to video games, CD-i received a large amount of learning games aimed at children from infancy to adolescence and of non-games interactive software like encyclopedias or travel guides.
Although extensively marketed by Philips, consumer interest in CD-i titles remained low. By 1994, sales of CD-i systems had begun to slow, and in 1998 the product line was dropped.
During all the 90s though, the biggest success for CD-i was in professional applications. CD-i was used in a wide variety of corporate and institutional environments, in such areas as: point-of-information, site-based advertising, training, educational and background music, thanks to the simplicity in both setup and use (the main advantage of CD-i over interactive discs for PCs was the full compatibility among all the CD-i players, with nothing like "minimum requirements" for newer software). Player Models
Philips marketed several CD-i player models:
* The CD-i player 200 series, which includes the 205, 210, and 220 models and the U.S. model 910, was designed for general consumption being the most basic model in the series.
* The CD-i player 300 series, which includes the 310, 350, 360, and 370 models, consisted of portable players designed for the professional market and not available to home consumers.
* The CD-i player 400 series, which includes the 450, 470, 490 models, consisted of slimmed-down units aimed at console and educational markets.
* The CD-i player 600 series, which includes the 601, 602, 604, 605, 615, 660, and 670 models, was designed for professional applications and software development including support for floppy disk drives, keyboards and other computer peripherals.
There also exist a number of hard-to-categorize models, such as the 740 model, the most advanced consumer CD-i player; the FW380i, an integrated mini-stereo and CD-i player; the 21TCDi30, a television with a built-in CD-i device; and the CD-i 180/181/182 modular system, the first models ever produced. Other manufacturers
Besides Philips, several other manufacturers produced CD-i players, including Magnavox, GoldStar / LG Electronics ("GDI 700", "GDI 750", "GDI 1000", "GPI 1100" and "GPI 1200"), Digital Video Systems ("Video Engine 2000"), Memorex ("CDI 2200"), Grundig ("CDI 100V" and "CDI 110E"), Sony ("Intelligent Discman IVO-V10" and "IVO-V11", portable CD-i players), Kyocera ("Pro 1000S"), NBS (a portable CD-i player called the "Lookman ID"), Highscreen, and Bang & Olufsen (a television with a built-in CD-i device).
Also, prototypes were made by Pioneer and Matsushita (Panasonic), but their players were never actually taken in production.
Finally, I2M produced the "PC/CD-i card", a CD-i interface board which allowed for full CD-i functionality on a computer system. Disc Formats
CD-i players were compatible with a huge amount of disc formats. Below, we try to list and briefly describe them:
* CD-i disc: this is a type of CD with audio, video and program content that can be played on a CD-i player and that fulfills the official CD-i specs, as laid down in the Green Book.
* CD-i Ready disc: this is a kind of disc, usually containing Audio data, where the program data are stored in a different track than the one defined in the CD-i specs, in order to avoid problems in CD-Audio players where playing the program track as if it was an audio track might result in equipment damages; strictly speaking this is not a CD-i disk, since it does not follow the rules of the Green Book for placing CD-Audio data, but they can be read correctly by all CD-i players ever produced.
* CD-Digital Audio or CD-DA disc: Compact Disc Digital Audio is the official name of the original music CD; as per specs, any CD-i player should be able to play back CD-Digital Audio discs, offering a player shell which is activated whenever a CD-Audio disc is loaded.
* CD+Graphics disc: CD+Graphics or CD+G is an extension to CD-Audio discs, defined by Philips and JVC, to allow for the storage of simple graphics in the subcode channels of each sector on a CD-Audio disc; this kind of disk was mainly used in Japan for karaoke-like applications and are compatible with most Philips CD-i players.
* CD-BGM disc: CD-BGM or CD-BackGround Music is a type of CD defined by Philips, Sanyo and Shinano-Kenshi in the mid 80s and it was used to store up to 10 hours of audio to use a background music in stores, shopping malls, etc.; although dedicated professional CD-BGM players were made available to play the discs (of which the Philips BMS 3000 was the most well-known), every CD-BGM disc also needed to include a CD-i application to allow for playback on a CD-i player.
* CD-i Bridge disc: A CD-i Bridge disc is a CD-ROM/XA disc which includes a CD-i application for playback on a CD-i player and which is based on the ISO-9660 file system to allow for the usage on other platforms like PC or Macintosh; well-known examples of CD-i Bridge discs are Photo-CD, Karaoke-CD and Video-CD, but it is also allowed to use the CD-i Bridge disc "specification" to make a dedicated disc type, as long as the disc is based on the ISO-9660 filesystem and it includes an application for playback on a CD-i player.
* Karaoke-CD disc: Karaoke-CD is the old name of the Video-CD standard, it dates back to 1993 when the standard was set up by Philips and JVC, and it was mainly intended for karaoke applications in Japan; the system uses MPEG-1 audio and video, and is based on the CD-i Bridge specification.
* Video-CD disc: evolution of the Karaoke-CD, this kind of discs contains up to 75 minutes of VHS quality video with accompanying sound in CD quality; audio and video are coded according to the MPEG-1 standard and the disc layout is based on the CD-i Bridge specification to allow for the playback on a variety of devices like CD-i players and dedicated Video-CD players. Both versions of the Video-CD format (v1.1 and 2.0) work on a CD-i player
* Photo-CD disc: The Photo-CD system was defined jointly by Philips and Kodak in 1991 and allows for the storage of very high quality photographic images on a compact disc; the system is based on the CD-i Bridge specification to allow for the playback of Photo-CD discs on CD-i players, Photo-CD players and other systems. Several version of Photo-CD were available and CD-i players can play all of them: Photo-CD Master (the regular format), Pro Photo-CD Master (but very high resolutions allowed by these discs were not available on CD-i), Photo-CD Portfolio (zoom features work on CD-i as long as the appropriate CD-i application is stored on the disc), Catalog Photo-CD and Medical Photo-CD.
CD-i players, like all CD-Audio players, are also able to read the audio parts of the following kind of discs:
* HDCD (High Density CD),
* CD-Video (audio + laserdisc video),
* CD-MIDI (audio with MIDI info in subcode channels),
* CD-Text (audio with songs/artists info in subcode channels).
On the other hand, they are not compatible with the following kind of discs:
* CD-Extra/CD-Plus/Enhanced CDs (CD-Audio with data tracks),
* Kodak's Picture-CD
* Corel's and Adaptec's Picture-CD
* Sony Electronic Books (Data Discman discs),
* Super Video-CD (Video-CDs based on MPEG-2),
* Super Audio-CD (except if they use the CD-compatible layer).
(info based on Wikipedia and ICDiA FAQs)
* Philips CD-i reference site -- http://www.philipscdi.com/
* The New International CD-i Association -- http://www.icdia.co.uk/
* Wikipedia page -- http://en.wikipedia.org/wiki/CD-i
* CD-i Emu -- http://www.cdiemu.org/