Gallery: Sega Genesis Teardown

Sega’s Mega Drive was first born in 1988, made its way to the US a year later and at last to Europe in 1990. In the United States, it got a change of name: Genesis. At the time, the 16-bit marvel was just amazing, giving us an almost perfect home version of Streetfighter II and […]

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Sega's Mega Drive was first born in 1988, made its way to the US a year later and at last to Europe in 1990. In the United States, it got a change of name: Genesis. At the time, the 16-bit marvel was just amazing, giving us an almost perfect home version of Streetfighter II and the iconic (and dizzying) Sonic the Hedgehog. I had one, and I loved it.

So imagine how I felt when I found one on the street corner this past weekend, sitting alone without controllers, cables or games, but in otherwise perfect condition. That's how we recycle in Barcelona -- we leave things on the street -- so I grabbed it, took it home and opened it up. Guess what's inside? Not much:

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This is the control center. You have headphone volume (also used to hook the machine up to a stereo), a reset button and a cartridge lock which, I have discovered, works by stopping the double flap on the game cart slot from opening.

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The underside. Not much here but patent numbers and and a slide-off hatch to access an expansion port on the side.
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The controller ports, just like VGA sockets. At this time you only ever got two ports, so you'd have to buy a 4-way multitap adapter to add more players.
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The logo. If I remember right, only the early models had that hideous burgundy-colored strip below the cart-slot (in my photo, it has come out pinker than it really is). In later models it changed to white.
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In and out. This is where you would hook up to the TV, providing a stunningly high resolution of 224 lines (US NTSC) and 240 lines (PAL). One great hack was to buy a US model and hook it up to a TV capable of accepting an NTSC signal. Because NTSC runs at 60Hz and PAL at 50Hz, doing this would give your games a 20% speed-boost. I owned a US SNES which I used for this purpose.
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No torx screws here. The Mega Drive is held together with plain ol' Philips-head screws.
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The innards, most notable by the amount of empty space and lack of fans. The old Motorola 68000 chip must have run a lot cooler than today's power-guzzlers.

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The chip.
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Close-up: It's like a tiny cityscape in there.
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The reverse of the circuit board. And finally, just because I can:
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Yes, it works: I just slid an iPod dock inside, secured it with gaffer tape and ran the USB cable out of a hole. Once the circuitry is out of the way, there is plenty of room in there for modding. I considered putting the guts of active speaker system in there to make a standalone iPod music center, but it's just more junk taking up space. This Mega Drive will be going back to the street from where it can find a new home.


Photos by Charlie Sorrel under a Creative Commons Attribution-Share Alike 3.0 Unported License.