CD-i: Difference between revisions
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# | {{Infobox information appliance | ||
| image = CD-i-910-Console-Set.png | |||
| image_size = | |||
| manufacturer = [[Philips]], [[Sony]] | |||
| type = [[:Category:Home video game consoles|Home video game console]]<br />[[data storage device|Media player]] | |||
| generation = [[:Category:Fourth-generation video game consoles|Fourth]] | |||
| release_date = NA: December 3, 1991<br/>JP: April 25, 1992<br/>EU: July 10, 1992 | |||
| discontinued = 1998 | |||
| predecessor = [[Philips Videopac + G7400]] (spiritual) | |||
| caption = Philips CDI 220, with its game controller | |||
| emulated = {{~}} | |||
| emulated notes = Many full-motion CD-i games still can't be emulated; see the "Hardware features and accessories" section. | |||
| emulated notes link = #Hardware_features_and_accessories | |||
}} | |||
'''CD-i''' ('''Compact Disc Interactive'''), is a disk format and media player developed and released by [[wikipedia:Philips|Philips]]. The main system ran on Microware [[wikipedia:OS-9|OS-9]] and had a Philips SCC68070 CPU at 15.5 MHz with 1MB of RAM. It has many [[#Hardware variants|hardware variants]], and some third-party manufacturers even produced their own [[Home media players|media players]] based on the CD-i format and technology. | |||
The CD-i was never meant to be a video game console, it was designed to be a "Interactive Multimedia" CD player, targeted mainly at people with disposable income. When the system started to show signs of being a major flop for Philips, they pivoted the direction of the CD-i into the uncharted territories of video games. | |||
The CD-i is best known nowadays for being home to a port of [https://www.mobygames.com/game/45865/tetris/ Tetris] with a new-age Jim Andron soundtrack, and [https://www.mobygames.com/game/21133/zeldas-adventure/ four] [https://www.mobygames.com/game/21134/zelda-the-wand-of-gamelon/ particularly] [https://www.mobygames.com/game/21409/link-the-faces-of-evil/ notorious] [https://www.mobygames.com/game/21411/hotel-mario/ games] loosely based on Nintendo copyrights, which were mainly made possible by Philips's prior attempts to develop a CD add-on for the [[Super Nintendo emulators|SNES]]. Their takes on Nintendo intellectual property have earned so much infamy over the years that you would be hard-pressed to find anyone who doesn't immediately think of them whenever you mention the CD-i. However, there were a few cult classic games for the system as well. | |||
__TOC__ | |||
==Emulators== | |||
{|class="wikitable" style="text-align:center;line-height:1.5;width:74%;font-size:90%;" | |||
|+Before editing, review the [[Getting involved]] and [[Recommended emulators|Recommended]] pages. See [[Computer_specifications#Recommended_Specifications|system requirements]] page for performance demand of the emulators.<br/>See tables for <span style="font-weight: bold; color: #CC0000; border: 1px solid #CC0000; padding: 2px;">[[#Enhancements|enhancements]], [[#Hardware_features_and_accessories|hardware features and accessories]] and [[#Hardware variants|hardware variants]].</span><br/>For more details such as [[licensing]], [[Source_code#Language_levels|programming language]], [[High_and_low-level_emulation|emulation method]], visit each emulator’s dedicated page. | |||
! scope="col"|Name | |||
! scope="col"|Platform(s) | |||
! scope="col"|Latest version | |||
! scope="col"|[[Licensing|License]] | |||
! scope="col"|Active | |||
! scope="col"|Compatibility | |||
! scope="col" |[[Recommended emulators|Recommended]] | |||
|- | |||
! colspan="11" |x86 | |||
|- | |||
| [[CD-i Emulator]] | |||
| align=left|{{Icon|Windows}} | |||
| [https://www.cdiemu.org/download/cdiemu-0.5.3-beta9.zip {{CD-i EmulatorVer}}]<br/>[https://tgames.fr/tgames/cdiemu-0.5.3-beta8-Patched.zip 0.5.3 beta 8 (Patched)] | |||
|{{Red}} {{License|Proprietary}} ||{{✓}} | |||
|{{Emulator compatibility|link=https://www.cdiemu.org/?body=site/players060.htm|10|37}} | |||
|{{~}} | |||
|- | |||
| [https://docs.libretro.com/library/same_cdi/ Same CDi<br/><small>same_cdi_libretro</small>] | |||
| align=left|{{Icon|Windows|Linux|macOS|FreeBSD}} | |||
| [https://buildbot.libretro.com/nightly/ libretro core] | |||
|{{Green}} {{License|GPLv2}} ({{License|Copyleft}}) | | |||
|{{✓}} | |||
| | |||
|{{~}} | |||
|- | |||
| [[MAME]] | |||
| align=left|{{Icon|Windows|Linux|macOS|FreeBSD}} | |||
| [http://www.mamedev.org/release.html {{MAMEVer}}] | |||
|{{Green}} {{License|GPLv2}}<br>{{License|BSD3}} ||{{✓}} | |||
| ||{{~}}[https://github.com/mamedev/mame/blob/master/src/mame/philips/cdi.cpp *] | |||
|- | |||
| [https://mamedev.emulab.it/haze/ TinyCDi] | |||
| align=left|{{Icon|Windows}} | |||
| ? | |||
|{{Red}} {{License|Proprietary}} ||{{✗}} | |||
| | | |||
|{{✗}} | |||
|- | |||
| [https://github.com/Stovent/CeDImu CeDImu] | |||
| align=left|{{Icon|Windows|Linux}} | |||
| None (pre-alpha) | |||
|{{?}} ||{{~}} | |||
| ||{{✗}}<small>(WIP)</small> | |||
|- | |||
| [https://web.archive.org/web/20010926085947/http://cdice.emuhq.com:80/ CD-iCE] | |||
| align=left|{{Icon|Windows|Linux}} | |||
| [https://www.zophar.net/cd-i/cd-ice.html 2001-08-20] | |||
|{{Red}} {{License|Proprietary}} ||{{✗}} | |||
| ||{{✗}} | |||
|- | |||
! colspan="11" |ARM | |||
|- | |||
|[[Provenance]] | |||
|align=left|{{Icon|iOS|iPadOS}} | |||
|[https://apps.apple.com/us/app/provenance-app/id1596862805 {{ProvenanceVer}}]</br>[https://github.com/Provenance-Emu/Provenance/releases git]|| ||{{Ya}} | |||
| | |||
|{{Dunno}} | |||
|- | |||
| [https://docs.libretro.com/library/same_cdi/ Same CDi<br/><small>same_cdi_libretro</small>] | |||
| align=left|{{Icon|Android|iOS}} | |||
| [https://buildbot.libretro.com/nightly/ libretro core] | |||
|{{Green}} {{License|GPLv2}} ({{License|Copyleft}}) ||{{✓}} | |||
| ||{{~}} | |||
|- | |||
! colspan="11" |[[FPGA]] | |||
|- | |||
| CDi_MiSTer | |||
| align=left|[[MiSTer]] | |||
| [https://github.com/MiSTer-devel/CDi_MiSTer/releases dvc_rc0] | |||
|{{Green}} {{License|GPLv3}} ({{License|Copyleft}}) ||{{✓}} | |||
| ||{{✓}} | |||
|} | |||
===Comparisons=== | |||
;[[MAME]] | |||
:This [[multi-system emulators|multi-system emulator]] includes a driver for the CD-i, although support is incomplete as it still has no [[#Digital Video Cartridge|DVC emulation]].<ref>https://github.com/mamedev/mame/issues/1170</ref> Starting the game from disc is recommended; this can be done with the built-in frontend by picking the specific game or through a soft reset after mounting the disc. MAME is also currently the only program to provide CD-i emulation through a [[libretro]] core, which makes it the easiest and the most stable method of emulating the CD-i for now. Compared to CD-i Emulator, MAME is generally easier to control and can better emulate the audio for some games. | |||
:;[https://docs.libretro.com/library/same_cdi/ Same CDi] | |||
::SAME CDi is a S(ingle) A(rcade) M(achine) E(mulator) for libretro, just like [[Neo_Geo_and_variants#Emulators|NeoCD <small>(neocd_libretro)</small>]] forked from MAME libretro, which is in turn a fork of MAME. It includes only the Philips CD-i driver, and simplifies the loading of CD content to provide a 'plug-and-play' experience. | |||
:;[https://mamedev.emulab.it/haze/ TinyCDi] | |||
::An unofficial build of [[MESS]] from 2009 made by one of MAME's active developers, Haze. This build is named such that it only focuses on the CD-i. It uses a fixed game list. Some games have more issues than they have on the official MAME build. | |||
;[[CD-i Emulator]] | |||
:This emulator by CD-i Fan is currently closed-source donationware, with vague plans to move to [[Licensing#Open-core software|open-core]] at a future date.<ref>https://github.com/cdifan/cdiemu</ref> The public beta releases unfortunately handle free trial timing in a way that makes them unusable (without cracking, anyway) after set calendar dates; for the latest beta, 0.5.3 beta 9, this will be on 1st July 2026. The current betas do have proof-of-concept [[#Digital Video Cartridge|DVC emulation]], although compatibility may still be an issue.<ref>http://www.cdiemu.org/site/relnotes.htm</ref> Despite the long time between releases, this emulator is likely still in active development as of 2025, with work being done on the next version (likely called 0.6) that reportedly supports most of the DVC games and also has several other improvements.<ref>https://www.theworldofcdi.com/cd-i-emulation/cd-i-emulator-053beta5-titles-compatibilities/</ref> As a sneak peak you can already look at the [https://www.cdiemu.org/site/players060.htm Player Support for CD-i Emulator version 0.6.0 page.] | |||
;CeDImu | |||
:A much newer independent project being actively developed by Stovent, largely based on an unofficial documentation set written by CD-i Fan (the creator of CD-i Emulator).<ref>https://github.com/cdifan/cdichips</ref> As of 2025, it was still active but currently in pre-alpha status, so don't expect it to boot any games just yet. | |||
;CD-iCE | |||
:One of the earliest CD-i emulators. It doesn't need a BIOS, but it was only developed to be able to play Rise of the Robots and does not support anything else. | |||
==Enhancements== | |||
{| class="wikitable sortable" style="text-align:center;width:100%" | |||
|+Please only include recommended emulators in this table. Do not bump or spam GitHub threads, issues, or feature request pages. | |||
! colspan=2 style="width:50%" | Name | |||
!CD-i Emulator | |||
! Same CDi | |||
! MAME | |||
|- | |||
| rowspan="2" |Controls | |||
|[[Input_lag|Input lag-mitigating technique]] | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
|[https://docs.retroachievements.org/general/tutorials/turbo-button.html Turbo button] | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
| rowspan="3" | Graphics | |||
| [[Resolution|Resizable internal resolution]] | |||
| colspan="3" |For emulation of 2D systems, the resolution can only be upscaled, making the pixels more apparent. | |||
|- | |||
| [[Texture_packs#Sprite_Replacement_.282D.29|Sprite Replacement]] | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| [[Widescreen_hacks|Widescreen hack]] | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| rowspan="4" |Performance | |||
|[https://blurbusters.com/frame-generation-essentials-interpolation-extrapolation-and-reprojection/ Frame generation technologies]<br /><small>([https://store.steampowered.com/app/993090/Lossless_Scaling/ LSFG], [https://github.com/NVIDIAGameWorks/Streamline/blob/main/docs/ProgrammingGuideDLSS_G.md DLSS-FG] and [https://nvidia.custhelp.com/app/answers/detail/a_id/5621/~/enabling-smooth-motion-in-nvidia-app SM], [https://www.techpowerup.com/316835/extrass-framework-paper-details-intels-take-on-frame-generation XeSS-FG], [https://community.amd.com/t5/gaming/amd-fluid-motion-frames-is-out-now-on-amd-radeon-rx-7000-series/ba-p/634372 AFMF] and [https://gpuopen.com/fidelityfx-super-resolution-3/#:~:text=Features-,Frame%20Generation,-Insert%20interpolated%20frames FSR FG])</small> | |||
| colspan="3" |<small>Implementing frame generation technology in an emulator is unfortunately quite challenging and unlikely to be feasible in the near future, however post-processing techniques such as [[Wikipedia:Motion_interpolation|motion interpolation]] is quite possible. [[Input_lag|Input latency]] will be a crucial factor, but its impact likely varies depending on the specific technique employed, it's recommended to use '''after applying the "Internal Framerate Hack"'''.<br/>While '''AFMF''' or '''LSFG''' can be used with MAME, please be aware that some visual glitches and artifacts may occur at this time. | |||
|- | |||
| [[30/60_FPS_cheat_codes|Internal frame rate hack]] | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| [[Overclocking|Overclock]] | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| Preload [[Wikipedia:Template:Disk_images|optical disc image]] to RAM<br /><small>For users with sluggish multi-platter HDDs or plagued by horrible seek times, this enhancement '''might''' offer smoother experience, potentially reduced power consumption; it also shines when disc images reside on a network drive.<br />Although keep in mind that preloading image would take some time, and it will require additional amount of RAM capacity.</small> | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| rowspan="6" |Post-processing | |||
|{{Enhancements/Post-processing/AI-powered filter compatible}} | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| {{Enhancements/Post-processing/Filters}} | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Ya}} | |||
|- | |||
|[[High_dynamic_range#Inverse_tone_mapping|Inverse tone mapping compatible]] | |||
|{{Dunno}} | |||
| {{Ya}}[https://www.libretro.com/index.php/category/hdr/ *] | |||
| {{Dunno}} | |||
|- | |||
| [[Wikipedia:Category:Anti-aliasing_algorithms|Post-rendering anti-aliasing]]<br /><small>(FXAA, TXAA and MLAA/SMAA)</small> | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Dunno}} | |||
|- | |||
| [[Wikipedia:Comparison_gallery_of_image_scaling_algorithms|Post-rendering scaling]]<br /><small>(Sharp bilinear, Lanczos and [[Wikipedia:GPUOpen#FidelityFX_Super_Resolution|FSR 1]])</small> | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Ya}} | |||
|- | |||
| {{Enhancements/Post-processing/Shader chain}} | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Ya}} | |||
|- | |||
| rowspan="11" |Quality of life | |||
|Automatic updater | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Dunno}} | |||
|- | |||
| [[Frontends#Graphical_User_Interfaces_.28GUIs.29|Big Picture Mode]] | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Ya}} | |||
|- | |||
| Built-in [[Cheats_and_patches|cheat manager]] | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| Built-in [http://forum.arcadecontrols.com/index.php/topic,106405 custom resolution/CRTSwitchRes]<br /><small>For using this on Windows, you need [http://geedorah.com/eiusdemmodi/forum/viewtopic.php?pid=1009#p1009 CRT Emudriver].<br />Another option is using EDID editor tool such as "Custom Resolution Utility".</small> | |||
| colspan="3" |Exclusive to [https://docs.libretro.com/guides/crtswitchres/ libretro cores] and [[GroovyMAME]] at the moment.<br />Also there is a [https://github.com/psakhis/Groovy_MiSTer project] for achieving software emulators like libretro cores and GroovyMAME send the raw RGB data over a network to a core running on MiSTer, it basically turns the MiSTer into a GPU for the emulator allowing for easy setup and use with CRT TVs/Arcade monitors. | |||
|- | |||
| Built-in [[Mods,_hacks_and_fan-translations#Built-in mod editor and manager for emulators|mod editor and manager]] | |||
|{{Dunno}} | |||
| {{Na}} | |||
| {{Na}} | |||
|- | |||
| Built-in [[Cheats_and_patches|patch manager]] | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| Command-line options | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Ya}} | |||
|- | |||
|Pause/Resume emulation | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| Per-game profiles | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Ya}} | |||
|- | |||
|[https://www.portablefreeware.com/faq.php#portable Portable] and [https://www.portablefreeware.com/faq.php#stealth stealth]<br /><small>Useful enhancement feature for non-personal computer use or plug-and-play scenarios. However, the software may still require the necessary [[Computer_specifications#Operating_System|prerequisites and dependencies]] for your operating system if it is not statically linked.</small> | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Ya}} | |||
|- | |||
| [[Save_disk_space_for_ISOs|Streamable compression format]] | |||
|{{Dunno}} | |||
| {{Ya}} | |||
| {{Ya}} | |||
|- | |||
| rowspan="6" |[https://tasvideos.org/Emulatorresources/Features TAS features] | |||
|Fast forward/Turbo speed | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
|Frame step<br /><small>(forwards and backwards)</small> | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
|[[Wikipedia:Macro_(computer_science)|Macros/Scripts]]/[https://tasvideos.org/LuaScripting Lua] | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
|[https://tasvideos.org/Movies Movie recording/playback] | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
|Rewind | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
|Save states | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
| rowspan="9" |Misc. | |||
|[[Sound and audio#Ambient_sounds_simulation|Ambient sounds simulation]]<br /><small>Simulation of audio from original hardware and environments, such as mechanical hard drive, floppy diskette, and optical drive noises (e.g., head seeks, spin-up/down, tray loading, disc spinning, and clicking), variable CRT flyback transformer whine (the classic high-pitched "coil whine" that dynamically changes pitch based on screen brightness and content), arcade cabinet effects (e.g., fan hum or button rattles), and other background ambient noises.</small> | |||
|{{Dunno}}||{{Na}} | |||
|{{Na}} | |||
|- | |||
|[[Sound and audio#Audio filters and presets|Audio filters and presets]]<br /><small>Simulation of characteristic playback limitations and coloration of vintage consumer audio hardware, such as CRT television speakers, arcade cabinets, handheld consoles, early PC sound outputs, and low-fidelity integrated speakers. These filters are not intended to be perfectly accurate recreations, but rather to evoke the tonal qualities, distortion, bandwidth limits, resonance, and compression associated with 8-bit and 16-bit era devices. Examples include mono or narrow stereo output, reduced frequency response, speaker cone distortion, mild saturation, aliasing, and preset lo-fi profiles inspired by classic TVs, portable game systems, radios, and retro multimedia hardware.</small> | |||
| colspan="3" |Exclusive to [https://github.com/RetroCrisis/Retro-Crisis-Audio-Filters libretro cores] at the moment. | |||
|- | |||
| [[Wikipedia:Category:Debugging|Debug features]] | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| [[Virtual_reality#VR_game_room_simulations|EmuVR support]] | |||
| colspan="3" |Exclusive to [https://www.emuvr.net/wiki/Installation_Guide#Downloads libretro cores] at the moment. | |||
|- | |||
| Free Look<br /><small>Free Look is a enhancement feature that allows manipulation of the in-game camera.</small> | |||
| colspan="3" |<small>While freecam would be technically possible, it will require per-game patches.<br />Said patches would require a significant amount of time to reverse the game's engine, which means that only someone talented with enough dedication to a single game could do it.</small> | |||
|- | |||
| [[Netplay]] | |||
|{{Dunno}} | |||
| {{Dunno}} | |||
| {{Dunno}} | |||
|- | |||
| [[RetroAchievements]] | |||
|{{Dunno}} | |||
| {{Na}} | |||
| {{Na}} | |||
|- | |||
|Rich Presence (RPC)<br/><small>Allows the emulator to share real-time game session details (e.g., current game title, level, boss, playtime, or custom status) with external applications. This enables features such as displaying what you're playing on your profile, inviting friends to spectate, or triggering join-in-progress functionality where supported.</small> | |||
|{{Dunno}}||{{Ya}} | |||
|{{Dunno}} | |||
|- | |||
|Screen translator<br /><small>Using optical character recognition (OCR) and other techniques, this feature can provide live translation of in-game text, text-to-speech for visually impaired users, and more — either on demand or automatically.</small> | |||
| colspan="3" |You can use [https://docs.libretro.com/guides/ai-service/ RetroArch's AI Service] or the standalone offline [https://github.com/bquenin/interpreter bquenin's Interpreter]. | |||
|} | |||
==Hardware features and accessories== | |||
{|class="wikitable sortable" style="text-align:center;width:100%" | |||
|+Please only include recommended emulators in this table. Do not bump or spam GitHub threads, issues, or feature request pages. | |||
! colspan=2 style="width:50%" | Name | |||
! CD-i Emulator | |||
! Same CDi | |||
! MAME | |||
|- | |||
| colspan=2 | [[Disc Drive emulation|CD-i Player]] | |||
|{{Dunno}} | |||
|{{Na}} | |||
|{{Dunno}} | |||
|- | |||
| colspan=2 | [[Early_online_services#CD-Online_.28Philips_CD-i.29|CD-Online]] | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|{{Dunno}} | |||
|- | |||
| colspan=2 | [[#Digital_Video_Cartridge|Digital Video Cartridge]] | |||
|{{~}}[https://www.cdiemu.org/site/dvcarts.htm *] | |||
|{{Na}}[https://github.com/libretro/same_cdi/issues/7][https://github.com/zach-morris/same_cdi/issues/14] | |||
|{{Na}}[https://github.com/mamedev/mame/issues/1170 *] | |||
|} | |||
===Digital Video Cartridge=== | |||
The one and only expansion card officially sold for the CD-i was the '''MPEG Digital Video Cartridge''' (DVC), a hardware MPEG-1 video decoder which enabled CD-i Digital Video and [[wikipedia:Video CD|Video CD]] playback as well as enhanced FMV capabilities for games that support it (similarly to the [[Sega_Saturn_emulators#Hardware_features_and_accessories|Sega Saturn's Video CD Card]]). As of 2025, there is no emulator that fully supports the DVC, and several games that require MPEG-1 video decoding will be pretty much unplayable without that support. To know whether your chosen games require the DVC, either check the "DVC status" column of [[wikipedia:List of CD-i games#Games|Wikipedia's CD-i game list]], or check [https://github.com/mamedev/mame/blob/master/hash/cdi.xml MAME's CD-i hash list] for games where the list includes <code><sharedfeat name="compatibility" value="DVC" /></code>. [https://github.com/MiSTer-devel/CDi_MiSTer CDi_MiSTer] FPGA core partially supports DVC emulation. | |||
{| class="wikitable" | |||
! Model !! RAM !! Region !! Notes | |||
|- | |||
| '''22ER9141 (AH00)''' || 1MB || PAL || The initial consumer DVC. Uses the Motorola 68000-based architecture. | |||
|- | |||
| '''22ER9141 (AH01)''' || 1MB || NTSC || North American equivalent to the AH00. | |||
|- | |||
| '''22ER9956 (AH02)''' || 1MB || Universal || An updated revision with improved microcode for better synchronization. | |||
|- | |||
| '''22ER9956 (AH03)''' || 1MB || Universal || The final major revision. Often considered the most stable for software compatibility in emulators like [[MAME]] and [[Celine]]. | |||
|} | |||
==Hardware variants== | |||
CD-i has many hardware variants, and some third-party manufacturers even produced their own [[Home media players|media players]] based on the CD-i format and technology.[https://www.cdiemu.org/?body=site/dvcarts.htm] | |||
===Internal Board Revisions=== | |||
The underlying architecture of CD-i players changed drastically over the platform's lifespan to reduce costs and consolidate chips. Knowing the board type is critical for emulation, as it dictates which chips (like the VDSC or CDIC) are present. | |||
{| class="wikitable" | |||
! Board !! Description !! Chips !! Used In | |||
|- | |||
| '''JNMS''' || Original Japanese New Media System board (?) || VSR + 2xVSC and CDIC || CD-i 180 development player | |||
|- | |||
| '''Maxi-MMC''' || Original MultiMedia Controller board || VSR + 2xVSC and CDIC + SLAVE || CD-i 601 and CD-i 602 professional players | |||
|- | |||
| '''Mini-MMC''' || Miniature MultiMedia Controller board || VSD + 2xVSC and CDIC + SLAVE || CD-i 605 and CD-i 205/910 players | |||
|- | |||
| '''Mono-I''' || First generation Monoboard || VDSC and CDIC + SLAVE || 2nd generation consumer players | |||
|- | |||
| '''Mono-II''' || Second generation Monoboard || VDSC and DSP + SLAVE || 3rd generation consumer players | |||
|- | |||
| '''Mono-III''' || Third generation Monoboard || VDSC and CIAP + IKAT || 4th generation consumer players | |||
|- | |||
| '''Mono-IV''' || Fourth generation Monoboard || VDSC and CIAP + IKAT || 5th generation consumer players | |||
|- | |||
| '''Mono-V''' || Fifth generation Monoboard || Chips used unknown || Skipped; never went into production | |||
|- | |||
| '''Mono-VI''' || Sixth generation Monoboard (One-Chip CD-i) || VDSC and CIAP + IKAT || 6th generation consumer players (untested) | |||
|- | |||
| '''Roboco''' || Smaller footprint variation of Mono-III board || VDSC and CIAP + IKAT || Small form-factor consumer players | |||
|- | |||
| '''Goldstar''' || Various Goldstar boards using 68340 processor (formerly called PCDI boards) || VDSC and CD/AP + RCHIP || CD-i 370 / GPI-1200M portable consumer and some rebranded consumer players | |||
|} | |||
===Philips Models (First-Party)=== | |||
Philips released several "series" of players, each with slightly different internal BIOS and board revisions. The numbers following the slash (e.g., /00, /17) generally indicate regional variations or minor hardware revisions. | |||
* '''100 Series (180):''' The original "professional" and early consumer units (180/20/37). These often have a distinct, older BIOS look and feel. | |||
* '''200 Series (200 / 205 / 210 / 220):''' The most common consumer units. They resemble high-end VCRs. | |||
** Models include: 200/00/17/20/37/40/57, 205/00, 210/00/17/20/25/37/40/57/60/77, 220/00/17/20/37/40/57/60/77/80/97. | |||
** ''Notes:'' The CD-i 200 is the USA version of the CD-i 210. The CD-i 210/00 is internally a CD-i 220/20 in a different case with some features missing. | |||
* '''300 Series (350 / 360 / 370):''' Portable "Professional" units. The 370 is notable for its built-in screen. | |||
** Models include: 350/00, 360/00, 370/00. | |||
** ''Notes:'' The CD-i 360 is a CD-i 350 with a larger screen. The CD-i 370 is actually a rebranded Goldstar GPI-1200M. | |||
* '''400 & 500 Series (450 / 470 / 490 / 550):''' Budget-friendly, "cost-reduced" consumer models. They are smaller and often used the AH03 DVC integrated directly into the board in later revisions. | |||
** Models include: 450/00/17, 470/00/17/20/37, 490/00/17, 550/00/17. | |||
** ''Notes:'' The CD-i 550 is essentially a CD-i 450 with the Digital Video Cartridge built-in. | |||
* '''600 Series (601 / 602 / 604 / 605 / 615 / 660 / 670):''' Professional-grade units intended for kiosks and developers. These often include floppy disk drive support and additional serial ports. | |||
** Models include: 601/00, 602/00, 604/00, 605/00/20, 615/00, 660/00, 670/00. | |||
* '''700 Series (740):''' Models include 740/00/17/20/37. | |||
* '''900 Series (910):''' Models include 910/00. The CD-i 910 is the USA version of the CD-i 205. | |||
* '''Combo / Hybrid Units:''' Philips also integrated CD-i tech into other home electronics. | |||
** '''FW380i/00:''' A mini-system audio stereo with integrated CD-i. | |||
** '''21TCDI30/00:''' A television set containing a built-in CD-i 210/40. | |||
===Third-Party Manufacturers=== | |||
Because CD-i was intended as a universal standard (like [[Home media players|VHS or Audio CD]]), several other companies produced hardware: | |||
* '''Goldstar / LG:''' | |||
** '''GDI 750 / GDI 1000''' (00/17): Rebranded Philips CD-i 450 units. | |||
** '''GPI-1200M/00:''' A portable unit (also rebranded by Philips as the 370). | |||
** '''LG GDI-700/00'''. | |||
* '''Magnavox:''' Primarily rebranded Philips units for the North American market (e.g., Magnavox CD-i 200). | |||
* '''Sony:''' Produced the ''' Sony IVO-V10''' (Intelligent Video), a portable player aimed at industrial and educational use. | |||
* '''Samsung:''' Released the '''Samsung DV-5500''', which is highly sought after by collectors for its unique build quality. | |||
* '''Kyocera:''' Produced the '''Kyocera Pro 1000'''. | |||
* '''Bang & Olufsen:''' Integrated CD-i technology into the '''Beocenter AV 9000''' high-end television/media system. | |||
* '''DVS:''' Released the '''VE-200/00'''. | |||
* '''DMB Korea:''' Released the '''DMB-1000/00'''. | |||
===Emulation Considerations=== | |||
* '''BIOS Matching:''' Most CD-i emulators require a specific BIOS file that matches the hardware model. For general gaming, a Philips 220 or 450 BIOS is recommended. The board type (Mono-I vs Mono-IV, etc.) dictates which emulation profiles will boot successfully. | |||
* '''DVC Emulation:''' To play games marked as "Digital Video Required," the emulator must have a DVC ROM (like the AH00, AH01, AH02, or AH03) mapped to the system. Without this, the system will prompt the user to "Insert Digital Video Cartridge" or simply crash to the shell. | |||
* '''NVRAM:''' The CD-i uses Timekeeper RAM (NVRAM) to store save games. In real hardware, these batteries eventually die; emulators handle this by creating a separate `.nv` or `.srm` file. | |||
==External links== | |||
*[https://github.com/MiSTer-devel/CDi_MiSTer CDi_MiSTer] | |||
*[https://github.com/TobiFlex/TG68K.C TG68K.C] | |||
*[https://opencores.org/projects/68hc05 68hc05] | |||
*[https://github.com/cdifan/cdichips cdichips] | |||
*[http://www.icdia.co.uk/microware/index.html icdia: Microware OS-9 Documentation] | |||
*[https://github.com/Stovent/CeDImu/blob/master/src/CDI/OS9/SystemCalls.hpp CeDImu: SystemCalls.hpp] | |||
*[https://github.com/mamedev/mame/blob/master/src/mame/philips/cdi.cpp MAME's cdi.cpp] | |||
==References== | |||
<references/> | |||
{{Philips}} | |||
[[Category:68k-based]] | |||
[[Category:CD-ROM-based]] | |||
[[Category:Discontinued video game consoles]] | |||
[[Category:Fourth-generation video game consoles]] | |||
[[Category:Home video game consoles]] | |||
Revision as of 21:12, 20 July 2026
| |
| Philips CDI 220, with its game controller | |
| Manufacturer | Philips, Sony |
|---|---|
| Type | Home video game console Media player |
| Generation | Fourth |
| Release date | NA: December 3, 1991 JP: April 25, 1992 EU: July 10, 1992 |
| Discontinued | 1998 |
| Predecessor | Philips Videopac + G7400 (spiritual) |
| Emulated | [#Hardware_features_and_accessories ~][note 1] |
CD-i (Compact Disc Interactive), is a disk format and media player developed and released by Philips. The main system ran on Microware OS-9 and had a Philips SCC68070 CPU at 15.5 MHz with 1MB of RAM. It has many hardware variants, and some third-party manufacturers even produced their own media players based on the CD-i format and technology.
The CD-i was never meant to be a video game console, it was designed to be a "Interactive Multimedia" CD player, targeted mainly at people with disposable income. When the system started to show signs of being a major flop for Philips, they pivoted the direction of the CD-i into the uncharted territories of video games.
The CD-i is best known nowadays for being home to a port of Tetris with a new-age Jim Andron soundtrack, and four particularly notorious games loosely based on Nintendo copyrights, which were mainly made possible by Philips's prior attempts to develop a CD add-on for the SNES. Their takes on Nintendo intellectual property have earned so much infamy over the years that you would be hard-pressed to find anyone who doesn't immediately think of them whenever you mention the CD-i. However, there were a few cult classic games for the system as well.
Emulators
| Name | Platform(s) | Latest version | License | Active | Compatibility | Recommended | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| x86 | ||||||||||
| CD-i Emulator | 0.5.3 beta 10 0.5.3 beta 8 (Patched) |
Proprietary | ✓ | 27.03% 10 out of 37 reported titles |
~ | |||||
| Same CDi same_cdi_libretro |
libretro core | GPLv2 (Copyleft) | | ✓ | ~ | ||||||
| MAME | 0.289 | GPLv2 BSD-3-Clause |
✓ | ~* | ||||||
| TinyCDi | ? | Proprietary | ✗ | ✗ | ||||||
| CeDImu | None (pre-alpha) | ? | ~ | ✗(WIP) | ||||||
| CD-iCE | 2001-08-20 | Proprietary | ✗ | ✗ | ||||||
| ARM | ||||||||||
| Provenance | 3.3.0 git |
✓ | ? | |||||||
| Same CDi same_cdi_libretro |
libretro core | GPLv2 (Copyleft) | ✓ | ~ | ||||||
| FPGA | ||||||||||
| CDi_MiSTer | MiSTer | dvc_rc0 | GPLv3 (Copyleft) | ✓ | ✓ | |||||
Comparisons
- MAME
- This multi-system emulator includes a driver for the CD-i, although support is incomplete as it still has no DVC emulation.[1] Starting the game from disc is recommended; this can be done with the built-in frontend by picking the specific game or through a soft reset after mounting the disc. MAME is also currently the only program to provide CD-i emulation through a libretro core, which makes it the easiest and the most stable method of emulating the CD-i for now. Compared to CD-i Emulator, MAME is generally easier to control and can better emulate the audio for some games.
- Same CDi
- SAME CDi is a S(ingle) A(rcade) M(achine) E(mulator) for libretro, just like NeoCD (neocd_libretro) forked from MAME libretro, which is in turn a fork of MAME. It includes only the Philips CD-i driver, and simplifies the loading of CD content to provide a 'plug-and-play' experience.
- TinyCDi
- An unofficial build of MESS from 2009 made by one of MAME's active developers, Haze. This build is named such that it only focuses on the CD-i. It uses a fixed game list. Some games have more issues than they have on the official MAME build.
- CD-i Emulator
- This emulator by CD-i Fan is currently closed-source donationware, with vague plans to move to open-core at a future date.[2] The public beta releases unfortunately handle free trial timing in a way that makes them unusable (without cracking, anyway) after set calendar dates; for the latest beta, 0.5.3 beta 9, this will be on 1st July 2026. The current betas do have proof-of-concept DVC emulation, although compatibility may still be an issue.[3] Despite the long time between releases, this emulator is likely still in active development as of 2025, with work being done on the next version (likely called 0.6) that reportedly supports most of the DVC games and also has several other improvements.[4] As a sneak peak you can already look at the Player Support for CD-i Emulator version 0.6.0 page.
- CeDImu
- A much newer independent project being actively developed by Stovent, largely based on an unofficial documentation set written by CD-i Fan (the creator of CD-i Emulator).[5] As of 2025, it was still active but currently in pre-alpha status, so don't expect it to boot any games just yet.
- CD-iCE
- One of the earliest CD-i emulators. It doesn't need a BIOS, but it was only developed to be able to play Rise of the Robots and does not support anything else.
Enhancements
| Name | CD-i Emulator | Same CDi | MAME | |
|---|---|---|---|---|
| Controls | Input lag-mitigating technique | ? | ? | ? |
| Turbo button | ? | ? | ? | |
| Graphics | Resizable internal resolution | For emulation of 2D systems, the resolution can only be upscaled, making the pixels more apparent. | ||
| Sprite Replacement | ? | ? | ? | |
| Widescreen hack | ? | ? | ? | |
| Performance | Frame generation technologies (LSFG, DLSS-FG and SM, XeSS-FG, AFMF and FSR FG) |
Implementing frame generation technology in an emulator is unfortunately quite challenging and unlikely to be feasible in the near future, however post-processing techniques such as motion interpolation is quite possible. Input latency will be a crucial factor, but its impact likely varies depending on the specific technique employed, it's recommended to use after applying the "Internal Framerate Hack". While AFMF or LSFG can be used with MAME, please be aware that some visual glitches and artifacts may occur at this time. | ||
| Internal frame rate hack | ? | ? | ? | |
| Overclock | ? | ? | ? | |
| Preload optical disc image to RAM For users with sluggish multi-platter HDDs or plagued by horrible seek times, this enhancement might offer smoother experience, potentially reduced power consumption; it also shines when disc images reside on a network drive. Although keep in mind that preloading image would take some time, and it will require additional amount of RAM capacity. |
? | ? | ? | |
| Post-processing | AI-powered filter (Freestyle) |
? | ? | ? |
| Filters | ? | ✓ | ✓ | |
| Inverse tone mapping compatible | ? | ✓* | ? | |
| Post-rendering anti-aliasing (FXAA, TXAA and MLAA/SMAA) |
? | ✓ | ? | |
| Post-rendering scaling (Sharp bilinear, Lanczos and FSR 1) |
? | ✓ | ✓ | |
| Shader chain | ? | ✓ | ✓ | |
| Quality of life | Automatic updater | ? | ✓ | ? |
| Big Picture Mode | ? | ✓ | ✓ | |
| Built-in cheat manager | ? | ? | ? | |
| Built-in custom resolution/CRTSwitchRes For using this on Windows, you need CRT Emudriver. Another option is using EDID editor tool such as "Custom Resolution Utility". |
Exclusive to libretro cores and GroovyMAME at the moment. Also there is a project for achieving software emulators like libretro cores and GroovyMAME send the raw RGB data over a network to a core running on MiSTer, it basically turns the MiSTer into a GPU for the emulator allowing for easy setup and use with CRT TVs/Arcade monitors. | |||
| Built-in mod editor and manager | ? | ✗ | ✗ | |
| Built-in patch manager | ? | ? | ? | |
| Command-line options | ? | ✓ | ✓ | |
| Pause/Resume emulation | ? | ? | ? | |
| Per-game profiles | ? | ✓ | ✓ | |
| Portable and stealth Useful enhancement feature for non-personal computer use or plug-and-play scenarios. However, the software may still require the necessary prerequisites and dependencies for your operating system if it is not statically linked. |
? | ✓ | ✓ | |
| Streamable compression format | ? | ✓ | ✓ | |
| TAS features | Fast forward/Turbo speed | ? | ? | ? |
| Frame step (forwards and backwards) |
? | ? | ? | |
| Macros/Scripts/Lua | ? | ? | ? | |
| Movie recording/playback | ? | ? | ? | |
| Rewind | ? | ? | ? | |
| Save states | ? | ? | ? | |
| Misc. | Ambient sounds simulation Simulation of audio from original hardware and environments, such as mechanical hard drive, floppy diskette, and optical drive noises (e.g., head seeks, spin-up/down, tray loading, disc spinning, and clicking), variable CRT flyback transformer whine (the classic high-pitched "coil whine" that dynamically changes pitch based on screen brightness and content), arcade cabinet effects (e.g., fan hum or button rattles), and other background ambient noises. |
? | ✗ | ✗ |
| Audio filters and presets Simulation of characteristic playback limitations and coloration of vintage consumer audio hardware, such as CRT television speakers, arcade cabinets, handheld consoles, early PC sound outputs, and low-fidelity integrated speakers. These filters are not intended to be perfectly accurate recreations, but rather to evoke the tonal qualities, distortion, bandwidth limits, resonance, and compression associated with 8-bit and 16-bit era devices. Examples include mono or narrow stereo output, reduced frequency response, speaker cone distortion, mild saturation, aliasing, and preset lo-fi profiles inspired by classic TVs, portable game systems, radios, and retro multimedia hardware. |
Exclusive to libretro cores at the moment. | |||
| Debug features | ? | ? | ? | |
| EmuVR support | Exclusive to libretro cores at the moment. | |||
| Free Look Free Look is a enhancement feature that allows manipulation of the in-game camera. |
While freecam would be technically possible, it will require per-game patches. Said patches would require a significant amount of time to reverse the game's engine, which means that only someone talented with enough dedication to a single game could do it. | |||
| Netplay | ? | ? | ? | |
| RetroAchievements | ? | ✗ | ✗ | |
| Rich Presence (RPC) Allows the emulator to share real-time game session details (e.g., current game title, level, boss, playtime, or custom status) with external applications. This enables features such as displaying what you're playing on your profile, inviting friends to spectate, or triggering join-in-progress functionality where supported. |
? | ✓ | ? | |
| Screen translator Using optical character recognition (OCR) and other techniques, this feature can provide live translation of in-game text, text-to-speech for visually impaired users, and more — either on demand or automatically. |
You can use RetroArch's AI Service or the standalone offline bquenin's Interpreter. | |||
Hardware features and accessories
| Name | CD-i Emulator | Same CDi | MAME | |
|---|---|---|---|---|
| CD-i Player | ? | ✗ | ? | |
| CD-Online | ? | ? | ? | |
| Digital Video Cartridge | ~* | ✗[1][2] | ✗* | |
Digital Video Cartridge
The one and only expansion card officially sold for the CD-i was the MPEG Digital Video Cartridge (DVC), a hardware MPEG-1 video decoder which enabled CD-i Digital Video and Video CD playback as well as enhanced FMV capabilities for games that support it (similarly to the Sega Saturn's Video CD Card). As of 2025, there is no emulator that fully supports the DVC, and several games that require MPEG-1 video decoding will be pretty much unplayable without that support. To know whether your chosen games require the DVC, either check the "DVC status" column of Wikipedia's CD-i game list, or check MAME's CD-i hash list for games where the list includes <sharedfeat name="compatibility" value="DVC" />. CDi_MiSTer FPGA core partially supports DVC emulation.
| Model | RAM | Region | Notes |
|---|---|---|---|
| 22ER9141 (AH00) | 1MB | PAL | The initial consumer DVC. Uses the Motorola 68000-based architecture. |
| 22ER9141 (AH01) | 1MB | NTSC | North American equivalent to the AH00. |
| 22ER9956 (AH02) | 1MB | Universal | An updated revision with improved microcode for better synchronization. |
| 22ER9956 (AH03) | 1MB | Universal | The final major revision. Often considered the most stable for software compatibility in emulators like MAME and Celine. |
Hardware variants
CD-i has many hardware variants, and some third-party manufacturers even produced their own media players based on the CD-i format and technology.[3]
Internal Board Revisions
The underlying architecture of CD-i players changed drastically over the platform's lifespan to reduce costs and consolidate chips. Knowing the board type is critical for emulation, as it dictates which chips (like the VDSC or CDIC) are present.
| Board | Description | Chips | Used In |
|---|---|---|---|
| JNMS | Original Japanese New Media System board (?) | VSR + 2xVSC and CDIC | CD-i 180 development player |
| Maxi-MMC | Original MultiMedia Controller board | VSR + 2xVSC and CDIC + SLAVE | CD-i 601 and CD-i 602 professional players |
| Mini-MMC | Miniature MultiMedia Controller board | VSD + 2xVSC and CDIC + SLAVE | CD-i 605 and CD-i 205/910 players |
| Mono-I | First generation Monoboard | VDSC and CDIC + SLAVE | 2nd generation consumer players |
| Mono-II | Second generation Monoboard | VDSC and DSP + SLAVE | 3rd generation consumer players |
| Mono-III | Third generation Monoboard | VDSC and CIAP + IKAT | 4th generation consumer players |
| Mono-IV | Fourth generation Monoboard | VDSC and CIAP + IKAT | 5th generation consumer players |
| Mono-V | Fifth generation Monoboard | Chips used unknown | Skipped; never went into production |
| Mono-VI | Sixth generation Monoboard (One-Chip CD-i) | VDSC and CIAP + IKAT | 6th generation consumer players (untested) |
| Roboco | Smaller footprint variation of Mono-III board | VDSC and CIAP + IKAT | Small form-factor consumer players |
| Goldstar | Various Goldstar boards using 68340 processor (formerly called PCDI boards) | VDSC and CD/AP + RCHIP | CD-i 370 / GPI-1200M portable consumer and some rebranded consumer players |
Philips Models (First-Party)
Philips released several "series" of players, each with slightly different internal BIOS and board revisions. The numbers following the slash (e.g., /00, /17) generally indicate regional variations or minor hardware revisions.
- 100 Series (180): The original "professional" and early consumer units (180/20/37). These often have a distinct, older BIOS look and feel.
- 200 Series (200 / 205 / 210 / 220): The most common consumer units. They resemble high-end VCRs.
- Models include: 200/00/17/20/37/40/57, 205/00, 210/00/17/20/25/37/40/57/60/77, 220/00/17/20/37/40/57/60/77/80/97.
- Notes: The CD-i 200 is the USA version of the CD-i 210. The CD-i 210/00 is internally a CD-i 220/20 in a different case with some features missing.
- 300 Series (350 / 360 / 370): Portable "Professional" units. The 370 is notable for its built-in screen.
- Models include: 350/00, 360/00, 370/00.
- Notes: The CD-i 360 is a CD-i 350 with a larger screen. The CD-i 370 is actually a rebranded Goldstar GPI-1200M.
- 400 & 500 Series (450 / 470 / 490 / 550): Budget-friendly, "cost-reduced" consumer models. They are smaller and often used the AH03 DVC integrated directly into the board in later revisions.
- Models include: 450/00/17, 470/00/17/20/37, 490/00/17, 550/00/17.
- Notes: The CD-i 550 is essentially a CD-i 450 with the Digital Video Cartridge built-in.
- 600 Series (601 / 602 / 604 / 605 / 615 / 660 / 670): Professional-grade units intended for kiosks and developers. These often include floppy disk drive support and additional serial ports.
- Models include: 601/00, 602/00, 604/00, 605/00/20, 615/00, 660/00, 670/00.
- 700 Series (740): Models include 740/00/17/20/37.
- 900 Series (910): Models include 910/00. The CD-i 910 is the USA version of the CD-i 205.
- Combo / Hybrid Units: Philips also integrated CD-i tech into other home electronics.
- FW380i/00: A mini-system audio stereo with integrated CD-i.
- 21TCDI30/00: A television set containing a built-in CD-i 210/40.
Third-Party Manufacturers
Because CD-i was intended as a universal standard (like VHS or Audio CD), several other companies produced hardware:
- Goldstar / LG:
- GDI 750 / GDI 1000 (00/17): Rebranded Philips CD-i 450 units.
- GPI-1200M/00: A portable unit (also rebranded by Philips as the 370).
- LG GDI-700/00.
- Magnavox: Primarily rebranded Philips units for the North American market (e.g., Magnavox CD-i 200).
- Sony: Produced the Sony IVO-V10 (Intelligent Video), a portable player aimed at industrial and educational use.
- Samsung: Released the Samsung DV-5500, which is highly sought after by collectors for its unique build quality.
- Kyocera: Produced the Kyocera Pro 1000.
- Bang & Olufsen: Integrated CD-i technology into the Beocenter AV 9000 high-end television/media system.
- DVS: Released the VE-200/00.
- DMB Korea: Released the DMB-1000/00.
Emulation Considerations
- BIOS Matching: Most CD-i emulators require a specific BIOS file that matches the hardware model. For general gaming, a Philips 220 or 450 BIOS is recommended. The board type (Mono-I vs Mono-IV, etc.) dictates which emulation profiles will boot successfully.
- DVC Emulation: To play games marked as "Digital Video Required," the emulator must have a DVC ROM (like the AH00, AH01, AH02, or AH03) mapped to the system. Without this, the system will prompt the user to "Insert Digital Video Cartridge" or simply crash to the shell.
- NVRAM: The CD-i uses Timekeeper RAM (NVRAM) to store save games. In real hardware, these batteries eventually die; emulators handle this by creating a separate `.nv` or `.srm` file.
External links
- CDi_MiSTer
- TG68K.C
- 68hc05
- cdichips
- icdia: Microware OS-9 Documentation
- CeDImu: SystemCalls.hpp
- MAME's cdi.cpp
References
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