--- title: Sega Mark III categories: - Consoles params: name: Mark III company: /companies/sega company_name: Sega tabs: - photos - connectors - emulators - links - videos photos: - title: SEGA MARK III subtitle: '' text: Thanks to Rikard Ljungkvist for this picture image: null - title: BOTTOM subtitle: '' text: Thanks to Rikard Ljungkvist for this picture image: null - title: REAR subtitle: '' text: |- From left to right: \- RGV video output\ \- Channel select switch\ \- RF video output\ \- Power in\ \- Power on/off switch Thanks to Rikard Ljungkvist for this picture image: null - title: MARK III WITH CARTRIDGE subtitle: '' text: '' image: null - title: CONTROLLER subtitle: '' text: '' image: null - title: SKETCH subtitle: '' text: '' image: null connectors: - title: A/V CONNECTOR PINOUT subtitle: '' text: This is the same pinout as the Genesis / Megadrive "1", and Master System. image: null - title: JOYSTICK CONNECTOR subtitle: '' text: Same pinout as the SG-1000 and the Master System image: null emulators: - title: Dega url: http://www.mameworld.net/easyemu/degatut.htm platform: Windows text: SMS, Mark III and Game Gear emulator - title: MEKA url: http://www.smspower.org/meka/ platform: Windows text: Multi-system emulator (SG-1000, Mark III, SMS, SC-3000, Game Gear, Colecovision, Othello Multivision) - title: Past-O-Rama url: http://www.system16.com/pastorama/ platform: Windows text: Sega systems emulator links: - title: Enri's Sega Mark III page url: http://www2.odn.ne.jp/~haf09260/Mark3/EnrM3.htm text: Very complete hardware information page along schematics - title: GameFAQs url: http://www.gamefaqs.com/console/sms/game/22669.html text: Excellent site gathering several Sega Master System FAQs - title: Henri's Home-Page url: http://www2.odn.ne.jp/~haf09260/Mark3/EnrM3.htm text: Sega MK III japanese page - title: IGN.COM url: http://codes.ign.com/lists/20137/068/index.html text: A LOT of Sega Master System game codes - title: MEKA Software Database url: http://www.smspower.org/meka/wip/meka.nam text: Very precise and useful software database (SMS, GG, Coleco, etc.) - title: Official Mark III pages from Sega! url: http://www.sega.co.jp/archive/segahard/mk3/ text: Excellent. Lot of info here (specs, pix, soft lists, ads,etc.) - title: Official Master System pages from Sega! url: http://www.sega.co.jp/archive/segahard/master/ text: Excellent. Lot of info here (specs, pix, soft lists, ads,etc.) - title: Sega Mark III Web Page url: http://www6.airnet.ne.jp/tera/sega/ text: Nice japanese site full of info - title: Sega Master System, the console legend url: http://www.geocities.com/snappa_fcw/sega.html text: SMS dedicated website. A lot of stuff here. - title: SMS Power url: http://smspower.speedhost.com/ text: Excellent site supporting all Sega 8-bit systems - title: UK Sega Master System page url: http://www.severedbbs.u-net.com/fletcher/SMS.html text: History, pictures and tech info - title: www.alexkidd.com url: http://www.alexkidd.com/ text: FAQs, Game reviews, hardware & peripheral pics and info, ads, links and much more - title: www.sega8bit.com url: http://www.sega8bit.com/ text: Featuring a games database, release and rarity information, plus the most active SMS related forums on the web videos: - title: Sega Master System TV commercial url: https://www.youtube.com/watch?v=S5vreoJLLRM text: 'Length: 31s' comments: - author: James Barber (United Kingdom) date: Wednesday 13rd June 2007 text: Hey Peder I actually have two of these now, it is a cool machine so light and small and quite stylish but the RGB output is quite dark for some reason unless the one I have been playing on is faulty.. nice machine.. - author: Peder Johnsen (Norway) date: Wednesday 8th October 2003 text: This is a cool machine.. would love to have it, since its the "original" Sega Master System Powerbase I related: - /museum/sega-master-system - /museum/sega-master-system-ii - /museum/sega-master-system-iii - /museum/sega-sg-1000 - /museum/sega-sg-1000-mark-ii oc_id: 806 source: url: https://web.archive.org/web/20230316165040/http://www.old-computers.com/museum/computer.asp?c=806 date: '2023-03-16' --- The Sega Mark III is the third version of the [SG-1000](/museum/sega-sg-1000/) system and was only released in Japan. This system is in fact the original Japanese version of the [Sega Master System](/museum/sega-master-system/). Compared to the [SG-1000 Mark II](/museum/sega-sg-1000-mark-ii/) the case has been redesigned again, a video monitor output has been added, and the system is equiped with a card slot which was also found on the first version of the Master System. The Mark III is backwards compatible with the SG-1000 cartridges. The system has an expansion port that can be used by add-ons, such as the FM sound unit or the Telecon Pack (wireless video signal). The controllers (two joypads), can still be stored on each side of the system. Many other add-ons were available (not using the expansion port though), such as several different controllers, 3D Glasses, keyboard, graphic board, etc. When Sega decided to market the Mark III abroad they redesigned the case and sold it as the Sega Master System. Though superior technically, the SMS/Mark III was eclipsed by the great success of the [NES](/museum/nintendo-nes/)/Famicom.
We need more info about this console ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.