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website/content/museum/sega-mark-iii.md
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yann64andClaude Opus 5.5 de19014649 Content with the complete media download (15,344 files)
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-13 16:47:19 +02:00

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title, categories, params
title categories params
Sega Mark III
Consoles
name image company company_name tabs photos connectors emulators links videos comments related oc_id source
Mark III /media/museum/photos/sega_mark3_1s.jpg /companies/sega Sega
photos
connectors
emulators
links
videos
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SEGA MARK III Thanks to Rikard Ljungkvist for this picture /media/museum/photos/sega_mark3_1b.jpg
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BOTTOM Thanks to Rikard Ljungkvist for this picture /media/museum/photos/sega_mark3_bottom.jpg
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REAR 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 /media/museum/photos/sega_mark3_rear.jpg
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MARK III WITH CARTRIDGE /media/museum/photos/sega_mark3_2.jpg
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CONTROLLER /media/museum/photos/sega_mark3_controller.jpg
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SKETCH /media/museum/photos/sega_mark3_sketch.jpg
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A/V CONNECTOR PINOUT This is the same pinout as the Genesis / Megadrive "1", and Master System. /media/museum/connectors/genesis_md_sms_mkiii_video.gif
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JOYSTICK CONNECTOR Same pinout as the SG-1000 and the Master System /media/museum/connectors/sms_joystick.gif
title url platform text
Dega http://www.mameworld.net/easyemu/degatut.htm Windows SMS, Mark III and Game Gear emulator
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MEKA http://www.smspower.org/meka/ Windows Multi-system emulator (SG-1000, Mark III, SMS, SC-3000, Game Gear, Colecovision, Othello Multivision)
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Past-O-Rama http://www.system16.com/pastorama/ Windows Sega systems emulator
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Enri's Sega Mark III page http://www2.odn.ne.jp/~haf09260/Mark3/EnrM3.htm Very complete hardware information page along schematics
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GameFAQs http://www.gamefaqs.com/console/sms/game/22669.html Excellent site gathering several Sega Master System FAQs
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Henri's Home-Page http://www2.odn.ne.jp/~haf09260/Mark3/EnrM3.htm Sega MK III japanese page
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IGN.COM http://codes.ign.com/lists/20137/068/index.html A LOT of Sega Master System game codes
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MEKA Software Database http://www.smspower.org/meka/wip/meka.nam Very precise and useful software database (SMS, GG, Coleco, etc.)
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Official Mark III pages from Sega! http://www.sega.co.jp/archive/segahard/mk3/ Excellent. Lot of info here (specs, pix, soft lists, ads,etc.)
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Official Master System pages from Sega! http://www.sega.co.jp/archive/segahard/master/ Excellent. Lot of info here (specs, pix, soft lists, ads,etc.)
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Sega Mark III Web Page http://www6.airnet.ne.jp/tera/sega/ Nice japanese site full of info
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Sega Master System, the console legend http://www.geocities.com/snappa_fcw/sega.html SMS dedicated website. A lot of stuff here.
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SMS Power http://smspower.speedhost.com/ Excellent site supporting all Sega 8-bit systems
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UK Sega Master System page http://www.severedbbs.u-net.com/fletcher/SMS.html History, pictures and tech info
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www.alexkidd.com http://www.alexkidd.com/ FAQs, Game reviews, hardware & peripheral pics and info, ads, links and much more
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www.sega8bit.com http://www.sega8bit.com/ Featuring a games database, release and rarity information, plus the most active SMS related forums on the web
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Sega Master System TV commercial https://www.youtube.com/watch?v=S5vreoJLLRM Length: 31s
author date text
James Barber (United Kingdom) Wednesday 13rd June 2007 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..
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Peder Johnsen (Norway) Wednesday 8th October 2003 This is a cool machine.. would love to have it, since its the "original" Sega Master System Powerbase I
/museum/sega-master-system
/museum/sega-master-system-ii
/museum/sega-master-system-iii
/museum/sega-sg-1000
/museum/sega-sg-1000-mark-ii
806
url date
https://web.archive.org/web/20230316165040/http://www.old-computers.com/museum/computer.asp?c=806 2023-03-16

The Sega Mark III is the third version of the SG-1000 system and was only released in Japan. This system is in fact the original Japanese version of the Sega Master System.

Compared to the 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/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.