Mega-CD (Europe, PAL)
Mega-CD (Europe, PAL)

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Info
   
Setname:  megacd   
Year: 1993
Manufacturer: Sega
Status: preliminary  notworks
Type: Game Console
Parent: Sega CD (USA, NTSC)
Emulation info
   
Overall emulation:  preliminary   
Color emulation:  good  
Sound emulation:  good  
Graphics emulation:  good  
Savestates:  unsupported   

Tech info
Chips
M68000 ("maincpu")cpu 7600489 Hz
Z80 ("genesis_snd_z80")cpu 3546894 Hz
M68000 ("segacd:segacd_68k")cpu 12500000 Hz
Speaker ("lspeaker")audio
Speaker ("rspeaker")audio
YM2612 ("ymsnd")audio 7600489 Hz
SEGA VDP PSG ("snsnd")audio 3546894 Hz
CD/DA ("segacd:tempcdc:cdda")audio
RF5C68 ("segacd:rfsnd")audio 12500000 Hz
Screens
Screen ("megadriv")raster horizontal 256 x 224 @ 50.000000
Media devices
cdrom ("cdrom") cdrom cdrm chd, cue, toc, nrg, gdi, iso, cdr
Software lists
megacdoriginal


Show detailed info about 'Configurations' of this system
Configurations

NameValue
Player 1 Controller Joystick 3 Buttons
 Joystick 6 Buttons
Player 2 Controller Joystick 3 Buttons
 Joystick 6 Buttons

Romset info
ROM NameSizeCRC32SHA1Dump StateBIOS option
megacd_model1_bios_1_00_e.bin131072 529ac15af891e0ea651e2232af0c5c4cb46a0cae2ee8f356good
Sysinfo



Features


* Main Processor: Motorola M68000 (16-bit) 7.67 MHz
* Co-processor: Z80a at 3.58MHz
* RAM: 64k (Plus 64k Ram for sound)
* Video RAM: 64k
* Max Cart Size: ???
* Max resolution: 320 x 224
* Color palette: 512 total; 64 max on screen
* Max # of sprites: 80; 20 max per scanline
* Sound Chips: YM2612 and a 4 channel TI SN76489A-like "SEGA PSG" (integrated into VDP/ASIC)
* Sound: Stereo FM-based sound with 8-bit audio samples


Usage


MESS supports various MegaDrive / Genesis versions

* genesis [Sega Genesis (USA, NTSC)]
* megadriv [Sega MegaDrive (Europe, PAL)]
* megadrij [Sega MegaDrive (Japan, NTSC)]
* gensvp [Sega Genesis (USA, NTSC) with SVP] - this driver emulates a Genesis and the SVP add-on chip present in "Virtua Racing" carts.

Currently, the SVP emulation is only included in the dedicated driver gensvp. Therefore, only the USA version of "Virtua Racing" would start. To play the Japanese or the European version of the game, simply start gensvp emulation and then change region using the "Dip Switches", as described below.

Each driver require a cart dump (in one of the following formats: .bin, .gen, .md, .smd) in the "cartridge" (cart) device to run. You can launch emulation using, at command line

mess megadriv -cart "C:\pathtogame\gamename.smd"

Many cartridges compare their country codes with that of the console itself and may behave differently, or lock up, if the two types do not match. Therefore, it is suggested to use the "genesis" driver for US games, the "megadriv" driver for European games and the "megadrij" driver for Japanese games.

Region Settings

When emulating Genesis with SVP add-on, you can change the Console Region on the fly entering the "Dip Switches" menu, accessible by hitting TAB. You can choose between USA, Japan or Europe (or you can come back to the default region, i.e. USA).


Known Issues


The code is now based on HazeMD. Accuracy of the emulation is great. More in detail

* Cartridges up to 40MBit (5MByte) are supported, including the special mapper for Super Street Fighter II.

* The standard 3 and 6-button pads are fully supported. Other peripherals are not yet.

* Split screen effects and interlacing are fully supported.

* Sprite/layer priority should be perfect.

Few issues are known:

* Bass Masters Classic Pro Edition (U) [!] - Sega Logo is corrupt

* Bram Stoker's Dracula (U) [!] - Doesn't Work (HV Timing)

* Double Dragon 2 - The Revenge (J) [!] - Too Slow?

* International Superstar Soccer Deluxe (E) [!] - Single line Raster Glitch

* Lemmings (JU) (REV01) [!] - Rasters off by ~7-8 lines (strange case)

* Mercs - Sometimes sound doesn't work

* Some beta games without proper sound programs seem to crash because the z80 crashes

Non-bugs, confirmed on real Genesis

* Castlevania - Bloodlines (U) [!] - Pause text is missing on upside down level

* Blood Shot (E) (M4) [!] - corrupt texture in level 1 is correct...



History and Trivia


Although the Sega Master System had proved a success in Brazil and Europe, it failed to meet the same popularity in the North American or Japanese markets, which by the mid-to-late 1980s were both dominated by Nintendo. Hoping to increase their share, Sega set about creating a new machine that would be at least as powerful as the then most impressive hardware on the market - the 16-bit Commodore Amiga, Atari ST, and the Macintosh II home computers.

Since the Sega System 16 was very popular, Hayao Nakayama, Sega's CEO at the time, decided to make their new home system utilize a 16-bit architecture. The final design was ported to the arcade, and eventually used in the Mega-Tech, Mega-Play and System-C arcade machines.

The first name Sega considered for their console was the MK-1601, but they ultimately decided to call it the "Sega MegaDrive". The North American version went by the name "Genesis" due to a trademark dispute, while the South Korean versions were called "Super Gam*Boy" and "Super Aladdin Boy" (this was the Korean version of MegaDrive 2). The Korean-market consoles were licensed and distributed by Samsung Electronics.

Sega released the MegaDrive in Japan during Fall 1988. Despite being the first 16-bit console, capable of much better graphics than its concurrent PC-Engine and Famicom, the MegaDrive did not met the expected success, and the situation became even worse after Nintendo Super Famicom and NEC PC-Engine CD releases.

In North America, Sega released the Genesis in late 1989, followed the next year by the European release of the MegaDrive. In these markets the competition with other consoles was definitely more successful, in particular in Europe where the console could also exploit the success of the Sega Master System. Thanks to the release of games like "Sonic the Hedgehog", in 1991, Sega was definitely able to threaten Nintendo's up-to-then stranglehold on the number one console position.

In 1993, Sega released a redesigned version of the console at a newly reduced price, the "MegaDrive 2". By consolidating the internal chipset onto a smaller, unified motherboard, Sega was able to both physically reduce the size of the console and reduce the production costs.

Aside from the release of the Mega-CD (Sega CD in North America) and 32X add-ons for the MegaDrive, Sega's last big announcement came in the form of a partnership with Time Warner in the U.S. to offer a subscription-based service called Sega Channel, which would allow subscribers to "download" games on a month-by-month basis.

However, the Mega-CD and 32X add-ons failed to attract new users to the 16bit system: by mid 1994, Sega's console was not so popular anymore and with the announcement and release of newer, more powerful consoles, interest in the MegaDrive suffered greatly.

In 1996, less than a year after the debut of the Saturn, Sega discontinued the production of the MegaDrive and its associated accessories. This obviously angered consumers around the world who had bought the Sega CD and 32X attachments only to see Sega abandon all support.

Variations of the Sega MegaDrive

During its lifespan, the Sega MegaDrive and Genesis quite possibly received more officially licensed variations than any other console.

* Sega MegaDrive (Japan)
* Japanese-language settings
* Headphone jack
* AUX port marked A/V OUT
* 9-pin EXT. port
* Has a cartridge lock
* On the circular molding, in purple is the text "AV Intelligent Terminal High Grade Multipurpose Use". At the bottom of the circle is a purple square section with a red power indicator LED.
* "MegaDrive" is printed in white on the lower right of the console to the left of the Sega logo.
* The reset button and start button on the joypad are blue.
* Model number HAA-2510

* Sega MegaDrive (Europe, Australia, and New Zealand)
* Converted to display PAL 50 Hz signal
* English-language settings
* Unable to play Japanese MegaDrive games due to shape of cartridge and console. However, adapters were sold to play Japanese games in the European model.
* Cartridge lock removed
* The text "High Definition Graphics - Stereo Sound" located behind cartridge port (only found on earlier models).
* The reset button and the start button are white.
* Model number 1600-05 (original model), 1601-05 (second variation without "High Definition Graphics - Stereo Sound" text or EXT port)

* Sega MegaDrive (Brazil)
* Converted to display PAL-M (60 Hz) signal
* English-language settings
* Unable to play Japanese and European MegaDrive games due to region limitation. However, adapters were sold to play Japanese and European games in the Brazilian model.
* Cartridge lock removed
* Toymaker Tec Toy manufactured and distributed the console.
* The text "High Definition Graphics - Stereo Sound" located behind cartridge port (only found on earlier models).
* The reset button and the start button are white.

* Sega MegaDrive (Asia): This console is a variant of the European MegaDrive and often mistaken for a Japanese MegaDrive.
* No text printed around circle
* Larger "16-Bit" logo used
* Power panel magenta instead of white.
* "Start" and "Reset" button are blue
* Identical to European MegaDrive with PAL or NTSC output
* Used Japanese MegaDrive logo and packaging similar to the Japanese version
* Games packaged the same as European with the same labeling. However, the cartridges are shaped like Japanese MegaDrive games.
* Model number: 1601-15 (revision without the EXT port)

* Sega Genesis (North America)
* Headphone jack
* AUX port marked A/V OUT
* 9-pin EXT. port on early models
* Reset and start buttons are gray
* "Sega Genesis" in white on top of machine below cartridge slot
* Model number MK-1601 is made in Japan, newer revisions were made in Taiwan to cut production costs

* Samsung Super Gam*Boy (South Korea): The official Korean release was licensed and marketed by Samsung Electronics, as were the games.

* Sega MegaDrive 2 (Japan) [NOTE: This model was also released in Europe / Australia in certain packages.]
* New square shape
* No headphone jack
* One custom multi-output for picture and sound
* Red colored flaps on cartridge port
* The text "High Grade Multi Purpose Intelligent Terminal" located behind cartridge port.
* Packaged with six-button controller.
* No power LED

* Sega MegaDrive 2 (Europe, Australia, and New Zealand)
* New square shape
* No headphone jack
* A/V port switched to one custom multi-output for picture and sound (previously, only mono sound was used, as the stereo sound came through the headphone jack)
* Push-button power switch
* Power port smaller, and different AC adapter used
* RF modulator removed
* Has a red power LED between the power and reset buttons
* Auto-switching RF lead included
* Model number MK-1631-50

* Sega Genesis (North America, second model) [NOTE: This model was not officially named "Genesis 2".]
* New square shape
* No headphone jack
* One custom multi-output for picture and sound
* Has a red power LED between the power and reset buttons
* "Genesis" in square above cartridge slot
* Model number MK-1631

* Samsung Super Aladdin Boy (South Korea)
* Officially licensed Korean version of Sega MegaDrive 2
* Licensed and distributed by Samsung Electronics

* Sega Genesis 3 (North America): Announced in 1997 as a "budget" version, the Genesis 3 was manufactured by Majesco. In order to cut costs, the expansion port and circuitry were omitted, which made the Genesis 3 incompatible with the Sega CD, Sega 32X, Power Base Converter and Virtua Racing. It was released in 1998 as the "Genesis 3" in North America only. It originally retailed for $50 and was later lowered as far down as $19.99.
* Smaller square shape
* No expansion port
* No headphone jack
* No power LED
* One multi-output for picture and sound
* Does not support 32X or Power Base Converter
* "Sega Genesis 3" below cartridge slot
* Model number MK-1641

* Sega MegaDrive 3 (Brazil) [NOTE: This model looks like the North American Sega Genesis 2.]
* Lots of different versions with different built-in games.

Sega MegaDrive derived hardware

* The Victor/JVC Wondermega/X'eye: The Wondermega (named X'eye in North America) is a combined MegaDrive and Mega-CD sold by Victor (known as JVC outside Japan). It was never released in Europe.
* Improved sound capabilities
* MIDI port
* 2 microphone inputs
* S-video out (only in Wondermega, not in later X'eyes unless modded by user)
* Packaged with a CD called Game Garden that had Flicky and Pyramid. The CD player is compatible with CD-Gs.
* Another release came with Compton's Interactive Encyclopedia, Prize Fighter, and a Karaoke CD+G demo CD.
* Later Japanese pack had a platform game called 'Wonderdog' by Core.
* Supported the "Wonder CD" peripheral that allowed one to create music and connect to MIDI-enabled devices.
* Supported a music keyboard called the "Piano Player" that allowed users to create music and learn to use the keyboard.
* Later given a redesign with a softer, more curved look. Some of the extra features were removed, and the joypads were remodeled infrared joypads.

* Sega Multi-Mega/CDX: The Sega Multi-Mega (named CDX in North America) is an integrated MegaDrive/Genesis and Mega-CD/Sega CD console with the capability of also functioning as a portable CD player, aimed at the more affluent market. The British release sold at £350.
* No built-in screen.
* Could function as a portable CD player. CD control buttons are on the front of the console. A back-lit LCD displayed the track number. An extra line out port was provided for stereo equipment.
* Powered by 2 AA batteries when operated as a portable CD player. The unit must be powered by an AC adapter to play video games.

* The Mega Jet and Sega Nomad: The original technology behind the Genesis Nomad traces back to the Mega Jet, which was a semi-portable version of the MegaDrive that was used for in-flight entertainment by Japan Airlines. The device lacked its own screen, but could play MegaDrive cartridges when hooked up to a small monitor used on Japan Airlines flights. The unit featured a directional pad on the left side and six buttons on the right, similar to the layout of a game controller. A consumer version of Mega Jet was released by Sega of Japan on March 10, 1994. It was essentially the same as the unit that was used on JAL flights, meaning that it still lacked a screen and could not be powered on without an AC adapter. A mono DIN plug cord was added and the necessary AC adapter was included with the unit. No other additions or improvements were made. Sega followed it up in October 1995 with the Genesis Nomad for the American market, essentially a Mega Jet featuring a 3.25 inch color LCD screen, and a battery pack attached to the rear of the system, holding six AA batteries, making it completely portable, as opposed to simply being a small Genesis system. In addition to its other improvements over the Mega Jet, an A/V output plug was added to the top of the unit, allowing owners to play games on a television screen with a separate A/V cable. One particularly interesting feature was the ability for one player to play using a connected TV while another watched on the Nomad. The directional pad on the unit controlled all one-player games, and a port on the bottom allowed a second controller to be plugged in for two-player games. This meant that the Nomad could be a fully functional home system as well as a completely portable handheld solution with a pre-existing library of games available for it. While the Nomad won praise for its screen resolution and features, there were some problems. The 32X and Sega CD were not compatible with the unit, and Sega's Power Base Converter, used to play Sega Master System games on the Genesis/MegaDrive, was also incompatible. On paper, the Nomad was the perfect color portable. It had a full color, backlit display, and supported an estimated 600 titles already on the shelves in addition to being a functional home system. But despite the reduction of price, the handheld did not garner enough support to continue.

* Pioneer LaserActive with MegaDrive module: LaserActive was the name given to Pioneer's CLD-A100 LaserDisc player. The player was both a Laserdisc and CD player right out of the box, while the addition of add-on modules manufactured by Sega and NEC could make the unit function as a gaming system as well. Sega's PAC-S1 module, released at a price of ¥39,000, allowed users to play MegaDrive, Sega-CD and specially created Mega LD games through the player. The Mega LD games were briefly thought to be the next evolution in gaming, mainly because the massive storage capacity of the Laserdiscs they were printed on meant that games could be multiple times larger than before and include broadcast quality full-motion video and digital audio as well as surround sound, all features that have become commonplace on modern DVD-ROM based systems. An NEC module, PAC-N1, gave the unit the capability to play Turbografx 16 games. The addition of either module also made the unit compatible with either Sega or NEC brand control pads. A later module was released for the unit by Pioneer, allowing it to function as a full-feature Karaoke machine. Pioneer later engineered 3D glasses for the system (Kit GOL-1), the glasses required an adapter to be attached before they could function with the player, but each adapter could support a pair of the goggles, allowing 2 users to play in 3D simultaneously. The LaserActive unit unfortunately did not survive for long. Its high cost and the general market disinterest in Laserdisc made the system a hard sell.

* TeraDrive: The TeraDrive was an 80286 PC manufactured by IBM with an integrated MegaDrive. The system was released in Japan only. Three models were available and only the top-of-the-line model was supplied with a hard disk. A special monitor (sold separately) was available, which could display both 15 kHz RGB video signals from the MegaDrive hardware and the 31 kHz VGA output of the PC hardware, both from the VGA connector. The system also contained composite NTSC video and stereo RCA jacks for connection to a TV. Additionally, MegaDrive games could be played at the same time as the PC section is being used, and it was possible for the MegaDrive and PC hardware to interact with each other, as shown with the Puzzle Construction program. It was also possible for MegaDrive software to be run from the PC's RAM. Etymologically, TeraDrive is a pun on the terms "MegaDrive" and "tera", which equals 1*mega*mega.

* Amstrad Mega PC: The Mega PC was a system produced by Amstrad under license from Sega with MegaDrive and IBM-compatible PC functionality in one. The Mega PC was similar in concept to the Teradrive, but was an unrelated project.
* The PC section used an Intel i386SX running at 25 MHz. It had 1 MB of RAM and a 40 MB hard disk drive.
* Released in Europe and Australia around 1992-1993
* Cream-colored, with a sliding cover on the front to change between MegaDrive and PC modes.
* The output from the MegaDrive section was only available through the VGA connector, to the supplied dual-sync (15 kHz/31 kHz) monitor.
* Though the PC section is always running when the system is switched on, MegaDrive software cannot be used at the same time as PC software, due to the system having only one video output.
* Could also be used with a Mega CD with the use of a special connector only available from Amstrad.
* Most of the MegaDrive hardware is contained on an 8-bit ISA card, with AdLib-compatible sound on the same board.
* The Mega Plus was an updated version of the Mega PC. It used an Intel i486 at 33 MHz and 4 MB of RAM.

* Firebox Mini MegaDrive 6-in-1: Developed by Firebox, the Mini MegaDrive is around the same size as an average joystick, includes 6 built-in games and can plug directly into a television set without the need for an external power supply (the unit can run off an AA battery source). A single MegaDrive pad has a direct connection to the Mini MegaDrive, allowing the player to select 1 of the 6 in-built games to play, which include: Sonic the Hedgehog 1, Golden Axe, Kid Chameleon, Flicky, Dr. Robotnik's Mean Bean Machine and Altered Beast. One of its major drawbacks is the lack of a secondary controller, and the lack of ability to connect one, hence any 2-player games are only playable single player.

* Aiwa Mega CD: Probably the most unusual of any incarnation of the MegaDrive was a variant that was built around an Aiwa CD player. The unit was made up of two components - an Aiwa bookshelf-size CD radio and a dock which added the MegaDrive connections (excepting sound, which the main radio unit handled.) Oddly, Sega and Aiwa chose not to place the interface between the two on the sides that would connect, but instead opted to use a connection cable on the back. This variant of the MegaDrive is one of the rarest made, and only saw limited release into the Japanese market.

* Radica Games' Legends Sega Genesis: The Sega Genesis/MegaDrive was brought back to life by the USA company Radica Games Limited under its Play TV collection. It consists of a classic Genesis joypad with a video cable ready for plugging into a television to play a variety of games. Some models actually condense the Genesis/MegaDrive system onto a single chip, allowing a cartridge slot to be added. As of March 2006, there are at least seven versions of the gadget:
* Play TV Legends Sega Genesis, with the games Sonic 1, Altered Beast, Golden Axe, Kid Chameleon, Dr. Robotnik's Mean Bean Machine, and Flicky.
* Play TV Legends Sega Genesis Volume 2, with the games Sonic 2, Ecco the Dolphin, Gain Ground, The Ooze, Columns, and Alex Kidd & the Enchanted Castle.
* Play TV Legends Street Fighter 2, a pack of two 6-button pads with Street Fighter II and Ghouls 'n Ghosts.
* Play TV Legends Menacer, a collection of light gun games from the Menacer 6-in-1 cartridge, including Pest Control, Space Station Defender, Whack Ball, Front Line, Rockman's Zone, and Ready, Aim Tomatoes.
* Play TV Legends Outrun 2019, a racing wheel with the game included.
* Play TV Legends Super Sonic Gold, a collection of Sonic games, including Sonic the Hedgehog, Sonic the Hedgehog 2, Sonic Spinball and Dr. Robotnik's Mean Bean Machine.
* Arcade Legends Sensible Soccer Plus, a pack of two 3-button pads containing games from UK developer Sensible Software, including Sensible Soccer, Cannon Fodder and Mega Lo Mania.

Miscellaneous

* Some MSX machines released only in Arab countries by a company named Universal, which along with MSX software could also (allegedly) play MegaDrive games.
* The A330 MSX had a cartridge port on the top of the machine. It has "Painting", "Calendar", "Arabic Writing", and "English Writing" as its programs.
* The AX990 had 50 programs. They are likely to be an unofficial multicart or other MSX programs.

(info based on Wikipedia)

Links


* Genesis / MegaDrive Hardware infos -- http://cgfm2.emuviews.com/gen.php
* Wikipedia page -- http://en.wikipedia.org/wiki/Sega_Genesis


Other Emulators


* Kega Fusion -- http://www.eidolons-inn.net/tiki-index.php?page=Kega
* Gens -- http://www.gens.ws/ (various forks exist)
* HazeMD -- http://haze.mameworld.info/ (same emulation core as MESS)
* Xega -- http://xega.emucamp.com/



Edit the History info for this game.

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