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Sega Mega-CD5555555
The '''Sega Mega-CD''' ([[Japanese language|Japanese]]: &#12513;&#12460;CD) is an add-on device for the [[Sega Mega Drive]] released in [[Europe]], [[Australia]] and [[Japan]]. The [[North America|North American]] version is called the '''Sega CD'''. The device will allow the user to both play CD audio discs and specially designed game CDs. It can also play [[CD plus G|CD+G]] discs.

The development of the Mega-CD was top secret; game programmers didn't know what they were designing for until the Mega-CD was finally revealed at Tokyo Toy Show in Japan. The Sega Mega-CD in Japan was designed to compete with the [[PC Engine]], which had a separate CD-ROM drive.

The Sega Mega-CD was not meant to compete with the [[Super Famicom]] ([[Super Nintendo Entertainment System]] outside Japan).

At first, the Mega-CD was a CD tray unit that sat under the console. The Sega Mega-CD 2 was a smaller, cheaper top loading drive that plugged next to the Sega Mega Drive.

==Markets==

===Japan===
The Sega Mega-CD was cool OMKG OMG OMG OMG!!!!!eon1 WTFROLF!!L!L!!L!1one11 was released first in Japan in [[1st December]] [[1991]]. Its retail price was about &yen;49,800. Initially, it was a great success because of the inherent advantages of CDs (high storage capacibility and the low cost of media). The fact that it had a nice [[Role-playing game|RPG]] catalog also helped. 

The system sold 100,000 units during the first year of release in Japan. However, cost issues prevented more units from being sold. 

===United States===
(contracted; show full)* CD-ROM drive transfer rate: 150 Kbytes/s (1x)
<i>(Above specs prior to compression)</i>

===Bios===
* Size: 1 Mb
* Used for games, CD player, CD+G and karaoke
* Access time: 800 ms

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<table border="1" cellpadding="3" cellspacing="0">
<caption>'''Bios Revisions'''</caption>

<tr><td>Bios Version <td> Machine</td></tr>
<tr><td>1.00<td> Original Mega-CD</td></tr>
<tr><td>2.00<td> Mega-CD 2 (Sega CD 2 in North America)</td></tr>
<tr><td>2.05<td> Mega-CD 2</td></tr>
<tr><td>2.10<td> Mega-CD 2</td></tr>
<tr><td>2.21<td> Sega Mega LD (Japan), Sega Multimega (Europe), CDX (North America)</td></tr>
</table>

===Audio===
<i>The Mega-CD adds 10 extra sound channels to the existing Mega Drive Z80 [[SPU]].</i>

* Sound format: Stereo PCM
* Sound channels: 8
* Maximum sample rate: 32 KHz (44.1 KHzhgfhjgfjkrdksgt for CD-DA)
* 16 bit [[DAC]]
* 8x internal over-sampling digital filter
* Frequency Range: 20 Hz - 20 KHz
* Signal-to-Noise Ratio: > 900 dB @ 1K
* Channel Separation: > 900 dB
* Output: RCA stereo Pin Jack x2 (L/R) / SCART cable

===Other===
Dimensions: 301mm x 212.5 x 112.5</br>
Weight: 1.4 kg (3.1 lbs)

==External Links==
*[http://www.consoledatabase.com/consoleinfo/segamegacd/index.html Console Database] - Sega Mega-CD/Sega CD

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[[Category:Video game consoles]]
[[Category:Sega]]