Editing PlayStation (console) (section)

===Functionality===
In addition to playing games, most PlayStation models are equipped to play audio CDs; the Asian model SCPH-5903 can also play [[Video CD]]s.{{sfn|West|1997|p=24}} Like most CD players, the PlayStation can play songs in a programmed order, shuffle the playback order of the disc and repeat one song or the entire disc. Later PlayStation models use a music visualisation function called SoundScope. This function, as well as a memory card manager, is accessed by starting the console without either inserting a game or closing the CD tray, thereby accessing a [[graphical user interface]] (GUI) for the PlayStation BIOS.<ref name=edgehistory/> The GUI for the PS One and PlayStation differ depending on the firmware version: the original PlayStation GUI had a dark blue background with rainbow graffiti used as buttons, while the early PAL PlayStation and PS One GUI had a grey blocked background with two icons in the middle.{{sfn|Perry|1995|p=53}}

PlayStation [[Video game console emulator|emulation]] is versatile and can be run on numerous modern devices.<ref>{{cite web |last1=Swann |first1=Graham |title=Investigating the PSP's PSone emulator |url=https://www.eurogamer.net/articles/investigating-the-psps-psone-emulator-article |website=[[Eurogamer]] |publisher=[[Future plc]] |access-date=29 December 2021 |archive-url=https://web.archive.org/web/20210419115807/https://www.eurogamer.net/articles/investigating-the-psps-psone-emulator-article |archive-date=19 April 2021 |location=[[Bath, Somerset|Bath]] |language=en |date=2 February 2007|url-status=live}}</ref><ref>{{cite web |last1=Rivera |first1=Joshua |title=Here's the Xbox Series S Running PS1 games in 4K |url=https://www.polygon.com/22629340/xbox-series-s-running-playstation-1-games-in-4k |website=[[Polygon (website)|Polygon]] |publisher=[[Vox Media]] |access-date=29 December 2021 |archive-url=https://web.archive.org/web/20211130051945/https://www.polygon.com/22629340/xbox-series-s-running-playstation-1-games-in-4k |archive-date=30 November 2021 |location=[[New York City]] |date=17 August 2021|url-status=live}}</ref> [[Bleem!]] was a commercial emulator which was released for [[IBM PC compatible|IBM-compatible PCs]] and the Dreamcast in 1999. It was notable for being aggressively marketed during the PlayStation's lifetime, and was the centre of multiple controversial lawsuits filed by Sony. Bleem! was programmed in [[assembly language]], which allowed it to emulate PlayStation games with improved visual fidelity, enhanced resolutions, and filtered textures that was not possible on original hardware.<ref name="bleem">{{cite web |last1=Hosie |first1=Ewen |title=The history of bleem! |url=https://www.eurogamer.net/articles/2017-12-11-the-history-of-bleem |website=[[Eurogamer]] |publisher=[[Future plc]] |access-date=29 December 2021 |archive-url=https://web.archive.org/web/20211103221642/https://www.eurogamer.net/articles/2017-12-11-the-history-of-bleem |archive-date=3 November 2021 |location=[[Bath, Somerset|Bath]]|url-status=live |language=en |date=11 December 2017}}</ref> Sony sued Bleem! two days after its release, citing [[copyright infringement]] and accusing the company of engaging in [[unfair competition]] and [[patent infringement]] by allowing use of PlayStation BIOSs on a Sega console.<ref>{{cite web|title=Sony Computer Entertainment America v. Bleem|date=14 February 2000|url=https://scholar.google.co.uk/scholar_case?case=11837224078052556056&hl=en&as_sdt=6&as_vis=1&oi=scholarr|volume=214|pages=1022|publisher=United States Court of Appeals, Ninth Circuit|via=[[Google Scholar]]|access-date=3 November 2021|archive-date=3 November 2021|archive-url=https://web.archive.org/web/20211103221638/https://scholar.google.co.uk/scholar_case?case=11837224078052556056&hl=en&as_sdt=6&as_vis=1&oi=scholarr|url-status=live}}</ref> Bleem! were subsequently forced to shut down in November 2001.<ref>{{cite web |last1=Bramwell |first1=Tom |title=Game Over for bleem |url=https://www.eurogamer.net/articles/article_31440 |website=[[Eurogamer]] |publisher=[[Future plc]] |access-date=29 December 2021 |location=[[Bath, Somerset|Bath]] |language=en |date=19 November 2001|url-status=live|archiveurl=https://web.archive.org/web/20211229191653/https://www.eurogamer.net/articles/article_31440|archivedate=29 December 2021}}</ref>