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yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import) 
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Sega Mega Drive II
Consoles
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Mega Drive II /media/museum/photos/md_ii_s.jpg /companies/sega Sega
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SEGA MEGADRIVE II /media/museum/photos/md_ii.jpg
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FRONT /media/museum/photos/md_ii_face.jpg
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FRONT #2 /media/museum/photos/md_ii_face2.jpg
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TOP /media/museum/photos/md_ii_top.jpg
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POWER BUTTON /media/museum/photos/md_ii_power.jpg
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BOX /media/museum/photos/megadrive_ii_box.jpg
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BOX - BACK /media/museum/photos/megadrive_ii_box_back.jpg
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GENESIS II BOX /media/museum/photos/sega_genesis2_box_1.jpg
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GENESIS II BOX # 2 /media/museum/photos/sega_genesis2_box_2.jpg
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THE ACTION CHAIR The action chair is a rare item. Connected to a Genesis/Megadrive, it acts as a controller! When you lean backward/forward it tells the Genesis to go down/up and when you lean left/right it tells to go left/right. Two handles on each side offer two buttons each, resulting in 4 buttons : START, SELECT, A & B. The Action Chair is basically a chair mounted on a controller. It is thus possible to play all games with it, though it is more convenient to play games like After Burner II, Space Harrier II, Super Thunder Blade, Hang on, Road Rash, Super Monaco GP, etc. Thanks to **Spycal** for this picture /media/museum/hardware/sega_action-chair.jpg
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DOCUMENTATION Page 1 Thanks to **Spycal** for this picture /media/museum/hardware/sega_action-chair_doc_1.jpg
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DOCUMENTATION Page 2 Thanks to **Spycal** for this picture /media/museum/hardware/sega_action-chair_doc_2.jpg
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THE UNIT This is the second version of the Mega CD, especially designed to be used with the Genesis / Megadrive II system. The MegaCD was released in 1991 in Japan, in 1992 in the USA and in 1993 in Europe. This very expensive addon was meant to fight the Nintendo SNES which was just released, and alternatively the NEC CD based systems... The main interest of the MegaCD was that if enabled bigger games and FMV movies/music. Despite this, movie based games were often boring, offering very little interaction with the player. Finaly there were not a lot of games produced for the MegaCD. /media/museum/hardware/megacd_ii_seul.jpg
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PICTURE #2 /media/museum/hardware/megacd_ii_seul_profil.jpg
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GENESIS / MEGADRIVE II FITTED ON THE MEGACD II /media/museum/hardware/megacd_ii_side.jpg
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CLOSE UP /media/museum/hardware/megacd_ii_close.jpg
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CLOSE UP #2 /media/museum/hardware/megacd_ii_profil.jpg
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A/V CONNECTOR PINOUT This is the same pinout found on the Nomad and the 32x. /media/museum/connectors/gen2_md2_nomad_32x_video.gif
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3 BUTTONS JOYSTICK The joystick port uses a multiplexing technique based on the 74HC157 chip (high-speed cmos quad 2-line to 1-line multiplexer) built-in the controller. There are 2 inputs for each 4 outputs of the chip. The console can determine which function is read by setting the *select* signal to 0v (logic low) or +5v (logic high). **Fun fact :** Atari 2600 joysticks could be used in the Genesis joystick ports. The button of the Atari joystick was the "B" button on a Sega Genesis, and the direction buttons are fully functional. /media/museum/connectors/genesis_joystick.gif
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Gens http://gens.consolemul.com/ Windows Excellent Genesis emulator
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KEGA http://www.eidolons-inn.net/kega/ Windows Kega is a Sega SG1000, SC3000, Master System, Game Gear, Genesis/Megadrive and SegaCD/MegaCD emulator for Win9x/ME/2000/XP
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Wgens http://emu.makii.pl/pokazpliki.php3?tematy=smd Windows Sega Megadrive emulator
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GameFAQs http://www.gamefaqs.com/console/genesis/ All sort of FAQs related to the Genesis / megadrive (games, hardware, etc.)
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GameWinners.com http://www.gamewinners.com/GEN/ Great cheat codes archive !
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GAMEX.COM http://www.gamesx.com/avpinouts/genesisav.htm Genesis / Megadrive video pinouts
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Genesis Collective http://www.genesiscollective.com/ Giant software database, full of useful info
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IGN.COM http://codes.ign.com/ A LOT of Genesis game codes
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Megadrive FAQ http://www.classicgaming.com/museum/faqs/megadfaq.shtml Megadrive FAQ hosted by Classicgaming.com
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Official 32X pages from Sega! http://www.sega.co.jp/archive/segahard/32x/ Excellent. Lot of info here (specs, pix, soft lists, ads,etc.)
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Official Mega Drive pages from Sega! http://www.sega.co.jp/archive/segahard/md/ Excellent. Lot of info here (specs, pix, soft lists, ads,etc.)
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Official Sega CD pages from Sega! http://www.sega.co.jp/archive/segahard/mcd/ Excellent. Lot of info here (specs, pix, soft lists, ads,etc.)
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SEGA CD FAQ http://www.classicgaming.com/museum/faqs/segacdfaq.shtml Sega CD FAQ hosted by classicgaming.com
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The Dump http://www.classicgaming.com/thedump/genesis/ Box arts, covers, reviews and more
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The McDonald Family Homepage http://www.billnkaz.demon.co.uk/segalist.htm How to build a RGB to D-SUB video cable for your Genesis / Megadrive 1. Also a big cheat file is available
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Video Game Music Archive http://www.vgmusic.com/music/console/sega/genesis/ Sega Genesis music files directory !!!
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Zophar's Domain http://www.zophar.net/genesis.html Nice emulator list & some interestinf game info to download
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Web Wiz CAPTCHA http://www.webwizcaptcha.com Sega dedicated newsgroup
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Sega Genesis TV commercial https://www.youtube.com/watch?v=Nd-tH9fKuOo Length: 30s
/museum/sega-genesis
/museum/sega-genesis-2
/museum/sega-genesis-3
/museum/sega-mega-drive
/museum/sega-nomad
/museum/sega-wondermega
/software/nfl-quarterback-club-32x
/software/rbi-baseball-95-32x
/software/toughman-contest-32x
/software/virtua-fighter-32x
/software/world-series-baseball-32x
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https://web.archive.org/web/20230530201936/http://www.old-computers.com/museum/computer.asp?c=843 2023-05-30

The Mega Drive II is basically just a re-designed Mega Drive.

The Mega Drive II was much smaller and squarer then the original Mega Drive. It did not have the headphone jack, volume control or RF TV output. The A/V port changed to a custom multi out port that now provided stereo sound to T.V's (previously only mono was output by the Mega Drive, the headphone jack had to be used for stereo sound). The power lead port was made smaller and a different AC adapter was used. Finaly the power switch was changed to a push button.

Both the original Mega Drive and the Mega Drive II could be connected to a Sega CD and 32X add-ons. The Mega CD was even remodeled to better fit the Mega Drive II. A specific version of the Mega Adapter/Master System Converter was also designed.

Adapted from Miles Mason's Genesis 2/Megadrive II text

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