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|title = PlayStation 4Sega Dreamcast|logo = PS4DreamcastConsole.png|developer = [[:SonySega]]|type = [[:Category:ConsolesHome consoles|Home video game console]]|generation = [[:Category:EighthSixth-generation_video_game_consolesgeneration video game consoles|Eighth Sixth generation]]|release = 20131998|discontinued = 2001|predecessor = [[PlayStation 3 emulatorsSega_Saturn_emulators|PlayStation 3Sega Saturn]]|emulated = {{~✓}}

 The '''PlayStation 4[[wikipedia:Sega Dreamcast|Dreamcast]]''' (PS4) is an eightha sixth-generation console produced released by Sony Computer Entertainment [[wikipedia:Sega|Sega]] on November 1527, 2013 1998 in Japan and later on September 9, 1999 in NA. It retailed for {{Inflation|USD|399199.99|20131999}}. It has had a semiHitachi SH-custom 8-core AMD x86-64 Jaguar 4 RISC CPU at 1200 MHz with 16 MB of RAM and 8 MB of VRAM.6 GHzIt had a PowerVR2 GPU at 100 MHz, whereas one which theoretically was capable of the cores is utilised separately only for lowpushing 3 million polygons/second on-power, background tasksscreen. The CPU There is shared on an APU chip a 2 MB audio RAM, which complemented a powerful 67 MHz Yamaha AICA sound processor, with a semi32-custom AMD GCN Radeon GPUbit ARM7 RISC CPU core. They are supported by 8 GB The audio chip could generate 64 voices with PCM or ADPCM codec and provided ten times the performance of GDDR5 RAM at 2the [[Sega Saturn emulators|Saturn's]] sound system.75 GHz, while 256 MB of DDR3 RAM is used only for background tasks. Notably, it is the first PlayStation console to use Sega also released the '''[[wikipedia:x86Sega NAOMI and variants|x86Naomi]] architecture''', making it easier an arcade system board with similar components to program for than the Dreamcast. Sammy's '''[https://segaretro.org/Atomiswave Atomiswave]''' arcade board was also based on the Dreamcast and Naomi. Sega collaborated with Microsoft on the Dreamcast's development, and this partnership would continue later with the [[PlayStation 3 Xbox emulators|PlayStation 3Xbox]] while also having . What came out of this was the same architecture as PCspossibility for games to be developed for an optimized version of '''Windows CE''' (with DirectX) on each disc. However, Windows CE wasn't mandatory to use and most developers opted for Sega's development tools instead out of convenience. Even in major emulators, this aspect isn't implemented (or implemented well).

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! scope="col"|[[libretro|Libretro Core]]! scope="col"|Naomi! scope="col"|Atomiswave! scope="col"|Windows CE! scope="col"|<abbr title="Free/Libre and Open-SourceSoftware">FLOSS</abbr>

|[https://github.com/devofspine/spinedemo Spine[DEmul]]|align=left|{{Icon|LinuxWindows}}|[httpshttp://githubdemul.emulation64.com/devofspinedownloads/spinedemo/releases Git{{DEmulVer}}]|{{✗}}||{{✓}} ||{{✓}} ||{{✓}}||{{✗}} ||{{✗}} ||{{✓}}

|[[Orbitalredream]]|align=left|{{Icon|Windows|Linux|macOS}}|[https://githubredream.comio/AlexAltea/orbital Gitdownload {{RedreamVer}}] | {{✗}} ||{{✗}} ||{{✓}}||{{✓}}||{{✗}} ||{{✓}} ||{{✓}}

|GPCS4[[Flycast]]|align=left|{{Icon|Windows|Linux|macOS}}|[https://flyinghead.github.comio/Inoriflycast-builds/GPCS4 GitCI Builds]<br/>[https://flathub.org/apps/details/org.flycast.Flycast nightly]<small> (Flathub)</small>|{{✓}}||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}}||{{✗✓}}

|PS4Delta[http://flycast.dojo.ooo/ Flycast Dojo]|align=left|{{Icon|Windows|Linux|Fightcade}}|[https://github.com/Force67blueminder/ps4delta Gitflycast-dojo/ git]|{{✗}}||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}}||{{✗✓}}

|RPCS4[[reicast]]|align=left|{{Icon|Windows|Linux}}|[httpshttp://githubbuilds.reicast.com/RPCS4CI Builds]<small> (Not Working)</small><br/>[https:/rpcs4 Git/snapcraft.io/reicast r8.1]<small> (Snap Store)</small>|{{✗}}||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}}||{{✗}}

;Spine[[DEmul]]:A high level emulator thatHas the highest compatibility and accuracy, but it's expected to run fifty Windows-only and closed-source. It supports Windows CE games,<ref>[https://www.youtube.com/watch?v=aCJsV6ez0LQ spine - Still Alive] on YouTube.</ref> after the publicly released demo was the first to go but in-game on two general, they run worse than standard Dreamcast titles. In a stark contrast from It's also more resource-intensive than other closed source emulators.;[[redream]]: Multi-platform and easy to use, Spine is Linuxbut it's closed-exclusive;<ref>source. Compatible with [https://www.redditredream.comio/r/emulation/comments/byohyx/spinedemo_20190609/eqoruje devofspinecompatibility 90+% of the Dreamcast library] on Reddit. "No source code at the moment though I plan to make it open source at some point."</ref> the creator (Windows CE now supported), has opted not a good user interface, is easy to release the source code out of cautionset up, and can run without a BIOS.<ref>Runs on [https://wwwyoutu.be/rywLHa1i9yk?t=529 low-end machines] provided that they support OpenGL 3.reddit1.com/r/emulation/comments/bwz7we/spine_ps4_emulator_another_fake_more_info_in/eqakwsz/ devofspineThere's a payware premium version that provides high-definition rendering and additional slots for save states.;[[nullDC]] : Can run a lot of games at great speed on Reddit. "I wouldnmid-end PC and it't mind s open sourcing -source, however, it at some point in time but there are several things that stop me from doing this in 's no longer developed and the near futuremore recent forks have improved upon it.: ;[[reicast]]: Eventually, nullDC's author forked his own project into reicast, with the main objective to widen platform availability to smartphones and tablets. While wider availability is generally a) there are some parts good thing, this resulted in cutting accuracy corners from the code that are a mess and I wouldn't feel comfortable releasing them for public consumption, b) I enjoy nullDC codebase to achieve the freedom speed goals necessary to develop it run on these platforms. Advancements in mobile hardware should have led to the way I want removal of such "hacks"; however lack of developer resources and interest led tolong delays in Reicast development, c) I would be a bit afraid of losing control, open source brings and the codebase remained virtually untouched for years before the RetroArch team began working with it as part of a risk "Reicast core", later named Flycast.:;[[flycast]]: Fork of forks for example and I wouldn't like to see my work used to do for example reicast available as a Windows exclusive variant, standalone emulator and d) PS4 is still a current gen console." (Edited)</ref> It uses as a [[Winelibretro]]core. Libretro collaborators, primarily [https://github.com/flyinghead/reicast-like approachemulator flyinghead], dramatically improved Reicast in areas such as graphics, input, system clock, and its authenticity was verified by lead Orbital developer AlexAlteaDreamcast VMU.Atomiswave and NAOMI SH-4-based arcade systems have also been added to great fanfare<refname="flycastnaomi">[https://www.redditgithub.com/rlibretro/emulationflycast/commentsissues/bz4ikp136</orbital_a_playstation_4_emulator_that_is/eqq6lxt/ AlexAltea] on Redditref>, along with support for MAME's popular CHD format. Even full MMU support, which is needed to run WinCE-based games such as "Armada"I've analyzed the Spine demo in IDA Pro (reverse engineering tool), "Half-Life" and everything checks out. It's obviously "SEGA Rally Championship 2", has recently been tackled through an experimental branch (anyone following Dreamcast emulation over the years understands what a very early release, lots of unimplemented parts, but it's realtough nut this is to crack). More importantlyAside from some audio stuttering issues in games such as "Looney Toons Space Race" and "Resident Evil: Code Veronica", we have tested it locally this is a highly compatible and it worksaccurate emulator."</ref>

;[[OrbitalMakaron]]:An openOne of the only two closed-source low-level emulator based on [[QEMU]], Orbital uses existing hypervisors like Intel HAXM to speed up performance. A surprising amount of progress has been made for an emulator of its kind, having to emulate the kernel used by the PS4; It's currently stuck at the console's Safe Mode<ref>https://www.youtube.com/watch?v=IBBHisNM74o</ref> and, thus, Dreamcast emulators that can't boot any properly play Windows CE games yet.

;GPCS4==Emulation issues==:A compatibility layer for For the PlayStation 4. Currentlyemulators that are either mature or maturing, it can show the logos in Nier: Automata and ran its first commercial game called ''We are Doomed'' in February 2020. Appears to be only a side project to test 3D graphics and may or may not become anything serious. Reasons to follow this project are the growing pool very large percentage of contributors; games work well, but some games still have problems and that it works on Windows, unlike Spineglitches.

;PS4Delta==VMU emulators==:A compatibility layer for While some Dreamcast emulators can leverage the screen of the VMU while the PlayStation 4. It's currently unable game is running, none of them allow you to boot any commercial gamesplay the minigames developed for it. For more information, visit See the devs main page on VMU emulation [[https://discord.gg/yVbPkmc Discord serverSega VMU emulators|here]]. The server itself is not very active to the public because most talk is being done in private between the developers.

;RPCS4==Downloads==:RPCS4 is a private project being worked on by one of the original developers of * [[RPCS3Emulator_Files#Dreamcast|BIOS]], DH. Work is being done in private, so there is little public information about it. Accordingly to DH, it currently runs on unix-like OS, and is able to run PS4 games (without graphics) and display errors. <ref>https://www.reddit.com/r/pcgaming/comments/cxx5h3/we_are_team_rpcs3_the_playstation_3_emulator_we/eyoqzes/</ref> The Github page hasn't been updated and appears to only be there as a placeholder until an actual release.

===Potential Roadblocks=References==Due to the PS4's x86 architecture and FreeBSD-based operating system, emulators for the device will by and large be very unconventional. Despite the x86's instruction set being '''huge'''<ref>{{cite web | url= https://en.wikipedia.org/wiki/x86_instruction_listings | title= x86 instruction listings | Wikipedia}}<references /ref>, a trait that would typically lead to years of development time by emulators, it opens the ability for pre-existing hypervisors to do the heavy lifting, eliminating the need for a recompiler. There is also, as of writing this, little to no documentation on the GPU (a modified Radeon 7970M with disabled stream processors) used in the PS4's APU, and it will require a complete re-implementation by emulator developers. End-users may wish to preform a preliminary dump of the required files from their PS4 using the [https://phi.nz/orbital/tools/dumper/ Orbital Dumper]

[[Category:Very early emulationHome consoles]][[Category:Sony Sega consoles]][[Category:Eighth-generation_video_game_consolesSega Dreamcast emulators|*]][[Category:PlayStation 4 emulatorsSixth-generation video game consoles]]