Sega Mega-CD

Sega Mega-CD

Manufacturer: Sega

Release	Date	RRP	Code
JP	1991-12-12	¥49,80049,800	HAA-2910
US	1992-11^[1]^[2]	$299.95299.95^[1]	1690
DE	1993-09^[5]	DM 529,-529,-^[5]	MK-4102-50
ES	1993-09		MK-4102-50
FR	1993-09	1,990F1,990^[6]	MK-4102-50
UK	1993-04-02^[3]	£269.99269.99^[3]	1690-18
SE	1993-05-27	3,495 kr3,495	1690-18
IT	1993-04		1690-18
AU	1993-04-19	$699699	1690-18
BR	1993-10^[4]
KR	1993-03	₩398,000398,000	SPC200CR
TW	199x
AS	199x		1690-11

The Sega Mega-CD (メガＣＤ), known as the Sega CD in North America and Brazil, and CD Aladdin Boy (CD 알라딘 보이) in South Korea, is a hardware add-on developed by Sega for the Sega Mega Drive.

As the names suggest, it allows a Mega Drive to run compact discs, be it proprietary Mega-CD software, audio CDs or CD+G discs. It also acts as an upgrade to the Mega Drive hardware, sporting an extra processor and extra RAM. The Mega-CD was first released in 1991 and was supported alongside regular Mega Drive cartridges.

Hardware

The Mega-CD comes in many forms, but in all cases the hardware adds the capability of reading compact discs, technology which in the late 1980s and early 1990s, was becoming a more affordable storage option than the traditional video game ROM cartridge of previous console generations.

A traditional Mega-CD does not act as a stand-alone unit, and needs to be hooked up to a Mega Drive via the expansion port located on the right hand side of the console. Mega-CDs do, however, require their own AC adaptor, meaning that in order to play Mega-CD games, two sockets will be occupied by the upgraded console.

Though one would expect the Mega-CD to simply give the Mega Drive access to compact discs, it in fact adds extra processors, memory and audio features as well, all of which can only be utilised by CD software. The Mega-CD does not, however, solve the issue of graphics, which aside from the ability to scale and rotate sprites on the fly, remain identical to the standard Mega Drive system.

The Mega-CD also offers stereo sound RCA connectors. The Mega Drive on its own will output a monaural audio signal to the television, with stereo only being available through the headphone port located at the front of the console. An external connection from the Mega Drive to the Mega-CD will allow all games to play through the television in stereo.

The Mega-CD can be used in conjunction with a Sega 32X to run one of the six Sega Mega-CD 32X games. Alternatively it can be used to just play regular 5-inch or 3-inch audio CDs.

Models

Main article: Mega-CD consoles.

Like the Mega Drive, there were two major revisions of the add-on by Sega and several special combination units.

Mega-CD

The original Mega-CD utilises a CD tray, and sits underneath the Mega Drive (or Mega Drive 2). It is a reasonably large add-on designed to be permanently attached to the console at all times.

Japanese model
North American model
European/Australian model
South Korean model

JP (Mega Drive)
JP (Mega Drive 2)
US (Genesis)
US (Genesis (2))
EU (Mega Drive)
EU (Mega Drive II)
KR (Super Aladdin Boy)
KR (Super Aladdin Boy II)

Mega-CD 2

A cost-reduced model of the Mega-CD was produced and released around the same period as the cost-reduced Mega Drive 2. In Japan, the system debuted on the 23rd April, 1993^[7], with a US release around Summer CES 1993 and August 1993 for Europe^[8].

This version sits on the right hand side of the Mega Drive, though continues to act as a new base for the console, and is a top-loading device. Fewer mechanical parts means less is likely to go wrong with a Mega-CD 2, and is designed to look sleeker and more appealing. The Mega-CD 2 is designed primarily with the Mega Drive 2 in mind, however a plastic extension piece was included to add extra support with an original Mega Drive attached.

Japanese/Asian model
North American/Brazilian model
European/Australian model
South Korean model

JP (Mega Drive)
JP (Mega Drive 2)
US (Genesis)
US (Genesis (2))
EU (Mega Drive)
EU (Mega Drive II)
KR (Super Aladdin Boy)
KR (Super Aladdin Boy II)

Mega Drive combos: JVC Wondermega/X'eye, Pioneer LaserActive, Sega Multi-Mega, and Aiwa Mega CD

Main articles: Wondermega, LaserActive, Sega Multi-Mega, Aiwa Mega CD.

Combination Mega Drive/Mega-CD units were developed over the course of the Mega-CD's lifetime. The Wondermega and LaserActive are standalone consoles; the LaserActive also plays LaserDiscs. The Multi-Mega is a portable audio CD player that can play Mega Drive and Mega-CD games when plugged in to wall power and a TV. The Aiwa Mega CD is a Mega Drive/Mega-CD packed into Aiwa's consumer-level portable CD stereos.

Technical specifications

See Sega Mega Drive technical specifications.

The following are upgrades over the Sega Mega Drive technical specifications.

CPU

Main CPU: Motorola 68000 16-bit processor running at 12.5 MHz
- Same as the Mega Drive/Genesis. Acts as a co-processor along with the Genesis CPU.
- Bus width: 16-bit
- Instruction set: 16-bit and 32-bit instructions, 16 registers
- Performance: 2.19 MIPS
Co-processor: Motorola 68000 (Mega Drive CPU) running at 7.67 MHz
- Bus width: 16-bit
- Performance: 1.34225 MIPS

Graphics

GPU graphics processor: Sega 315-5548 Custom ASIC^[9]
- Bus width: 32-bit (2x 16-bit)
- Bus clock rate: 6.25 MHz (25 MB/s bandwidth)
Number of simultaneous colors on screen: 64 (default)
- Using programming tricks, this limit is increased to 128–256 colors via raster effects.
- 128–256 colors can be displayed on screen using HAM techniques^[10]
Planes: 5 layers
- Sega CD FMV layer
- 3 enhanced Mega Drive layers (sprite layer, 2 tile layers)
- Mega Drive back screen
Full motion video: Video size from 1/4 to full screen, advanced compression scheme, software-based upgrade
- On-screen colors available in Cinepak and TruVideo modes: 128–256 colors
Sprites/Tilemaps: The Mega-CD features enhancement effects such as scaling and rotation, similar to Sega's Super Scaler arcade hardware and that of the "Mode 7" effect employed by the Super NES. While Mode 7 only supports the scaling and rotation of tilemap backgrounds, the Sega CD supports the scaling and rotation of both the sprites and the tilemap backgrounds.^[11]
DMA transfer rates: 3.467179 MB/s (VRAM), 6.934358 MB/s (CRAM/VSRAM)
- Transfer rates during active display: 1.625 MB/s (VRAM), 3.25 MB/s (CRAM/VSRAM)
Read/Write fillrate: 6.934358 MPixels/s
- Write fillrate during active display: 3.25 MPixels/s
3D polygon graphics:^[12]
- Vertex transformations: 16,000 vertices/sec^{[n 1]}
- Polygon transformations: 5000 triangles/sec,^{[n 2]} 4000 quads/sec^{[n 3]}
- Framebuffer rendering: 256×160, double-buffered, 15–30 FPS^{[n 4]}
- Flat shading: 3300 polygons/sec (32-pixel triangles),^{[n 5]} 2100 polygons/sec (64-pixel quads)^{[n 6]}
- Texture mapping: 2000 polygons/sec^{[n 7]}

Sound

The Mega-CD adds 10 sound channels to the 10 provided by the Mega Drive's sound chips.

CD Digital Audio
- 2-channel stereo
- 44.1 kHz sampling rate
- 16-bit PCM audio depth
Ricoh RF5C164 (315-5476A) PCM chip provides 8 sound channels:^[9]
- Sound format: 8-bit sign/magnitude monaural PCM (with "stereo" support by allowing each channel to have different volumes on both left and right channels)
- Maximum sample rate: 32 kHz
- PCM audio depth: 16-bit^[11]
- Bus width: 8-bit

Other specifications:

16-bit DAC
8x internal over-sampling digital filter
Frequency Range: 20 Hz - 20 KHz
Signal-to-Noise Ratio: > 90 dB @ 1K
Channel Separation: > 90 dB
Input: Mixer cable for Genesis Model 1 compatibility.
Output: Stereo RCA connectors.

Memory

System RAM: 856 KB^[13]
- Main RAM: 4 Mbit (512 KB)
- VRAM: 2 Mbit (256 KB)
- PCM audio samples: 512 Kbit (64 KB)
- CD-ROM data cache: 128 Kbit (16 KB)
- Internal Backup RAM: 64 Kbit (8 KB)
System Boot ROM: 1 Mbit (128 KB)
External Memory Card: 1 Mbit (128 KB) CD BackUp RAM Cart
System RAM bandwidth: 62.5 MB/sec (3 buses, 56-bit bus width)^[13]
- Main RAM: 25 MB/sec (16-bit, 12.5 MHz, FPM DRAM)^[14]
- VRAM: 25 MB/sec (32-bit, 6.25 MHz, PSRAM)^[15]
- Audio RAM: 12.5 MB/sec (8-bit, 12.5 MHz, SRAM)^[16]

Storage

500 MB CD-ROM discs (equivalent to 62 min of audio data)
Access time: 800 ms
1/4 screen B/W footage video: 1.5 to 4 hours
1/4 screen color footage: 45 minutes
CD-ROM drive transfer rate: 150 Kbytes/s (1x)

(Above specs prior to compression)

Boot ROM

Size: 1 Mb (128 KB)
Used for games, CD player, CD+G viewing, karaoke (limited to Japanese systems) and regional lockout
Region codes: "NA" = North America (NTSC), "EU" = Europe (PAL)

Boot ROM Revisions
Boot ROM Version	Machine	Download	CRC32
0.98	Pioneer LaserActive	0.98 (NA) ^(info) ("Us lsr 930329.zip" does not exist)	8c3e3945
0.98	Pioneer LaserActive	0.98 (Asia) ^(info) ("Jp lsr 930329.zip" does not exist)	9f5771d2
1.00	Sega/Mega CD Model 1 Victor WonderMega 1 (Asia) Sega WonderMega (Asia)	1.00g (Asia, NTSC) ^(info) ("BIOS Mega CD Japan 1.00g.7z" does not exist)	3beb1ac2
		1.00l (Asia, NTSC) ^(info) ("BIOS Mega CD Japan 1.00l.md.zip" does not exist)	f18dde5b
		1.00o (Asia, NTSC) ^(info) ("BIOS Mega CD Japan v1.00o.7z" does not exist)	1d9756a3
		1.00p (Asia, NTSC) ^(info) ("Jp mcd1 911217.zip" does not exist)	9d2da8f2
		1.00s (Asia, NTSC) ^(info) ("BIOS Mega CD Japan 1.00S.md.zip" does not exist)	79f85384
		1.00s (Asia, PAL) ^(info) ("Jp mcd1 911228.zip" does not exist)	550f30bb
		1.00w (Sega WonderMega Bios) ^(info) ("Jp wmg 920206.zip" does not exist)	d21fe71d
		1.00 (NA) ^(info) ("BIOS Sega CD USA 1.00.md.zip" does not exist)	e7e3afe2
		1.00 (EU) ^(info) ("Eu mcd1 921027.zip" does not exist)	529ac15a
1.04	Pioneer LaserActive	1.04 (NA) ^(info) ("Us mld 930922.zip" does not exist)	2ed602d7
1.05	Pioneer LaserActive	1.05 (Asia) ^(info) ("Jp lsr 930810.zip" does not exist)	b24b919d
1.10	Sega CD Model 1 (minor update)	1.10 (NA) ^(info) ("Us scd1 921011.zip" does not exist)	c6d10268
1.11	Mega CD Model 2 (Japan sample/prototype)	1.11 (JP) ^(info) ("Jp mcd2 920501.zip" does not exist)	4be18ff6
2.00	Sega/Mega CD 2 Victor WonderMega 2 (Asia) JVC X'Eye (NA)	2.00 (1^st NA version) ^(info) ("Us scd2 930314.zip" does not exist)	8af65f58
		2.00w (2^nd NA version) ^(info) ("Us scd2 930601.zip" does not exist)	9f6f6276
		2.00c (Asian version) ^(info) ("Jp mcd2 921222.zip" does not exist)	dd6cc972
		2.00 (1^st EU version) ^(info) ("Eu mcd2 930330.zip" does not exist)	0507b590
		2.00w (2^nd EU version) ^(info) ("Eu mcd2 930601.zip" does not exist)	4d5cb8da
		2.00 (X'Eye) ^(info) ("Us xeye 931227.zip" does not exist)	290f8e33
		2.00 (Wondermega) ^(info) ("Wondermega 2.00 Bios.zip" does not exist)	2b19972f¹
2.11	Sega/Mega CD 2, Aiwa CSD G1M (Japan)	2.11w (NA) ^(info) ("Us scd2 930621.zip" does not exist)	2e49d72c
2.11	Sega/Mega CD 2, Aiwa CSD G1M (Japan)	2.11c (JP) ^(info) ("Aiwa_CSD_GM1_Bios.zip" does not exist)	12154531
2.21	Sega Multimega (Europe & Japan), CDX (North America), Linguaphone Education Gear (Japan)	2.21x (MultiMega, EU) ^(info) ("Eu mmg 930916.zip" does not exist)	aacb851e
2.21		2.21x (CDX) ^(info) ("Us cdx 930907.zip" does not exist)	d48c44b5

¹ The ZIP file contains two dumps, a "good" dump and a "bad" dump. The "bad" dump has an incorrect HINT vector, but is otherwise identical to the "good" dump. The CRC32 listed here is for the "good" dump.

Other

Dimensions: 301mm x 212.5 x 112.5
Weight: 1.4 kg (3.1 lbs)

History

Main article: History of the Sega Mega-CD.

Games

List of games

Main article: List of Mega-CD games.

The five games marked with an asterisk(*) were later released in enhanced form, requiring both the Mega-CD and 32X to be played, and taking advantage of the latter's improved graphics (see Sega Mega-CD 32X).

3 Ninjas Kick Back / Hook (1994)
3x3 Eyes: Seima Densetsu (1993)
AX-101 (1994)
A-Rank Thunder Tanjouhen (1993)
The Adventures of Batman & Robin (1995)
The Adventures of Willy Beamish (1993)
After Armageddon Gaiden (1994)
After Burner III (1992)
Aisle Lord (1992)
Alshark (1993)
Android Assault: The Revenge of Bari-Arm (1994)
Anetto Futatabi (1993)
The Animals (1994)
Aoki Ookami to Shiroki Mejika: Genchou Hishi (1993)
Arcus I.II.III (1993)
Arslan Senki (1993)
Bakuden: The Unbalanced Zone (1994)
Batman Returns (1993)
Battle Frenzy (1995)
Battlecorps (1993)
BC Racers (1995)
Bill Walsh College Football (1993)
Black Hole Assault (1992)
Bouncers (1995)
Bram Stoker's Dracula (1993)
Brutal: Paws of Fury (1993)
Burai: Hachigyoku no Yuushi Densetsu (1992)
Cadillacs and Dinosaurs: The Second Cataclysm (1994)
Capcom no Quiz Tonosama no Yabou (1992)
Captain Tsubasa (1994)
Chuck Rock II: Son of Chuck (1992)
Chuck Rock (1992)
Cliffhanger (1993)
Cobra Command (1992)
Colors of Modern Rock (1993)
Compton's Interactive Encyclopedia (1994)
Corpse Killer (1994)*
Cosmic Fantasy Stories (1992)
Crime Patrol (1994)
Cyborg 009 (1993)
Daihoushinden (1994)
Dark Seed (1993)
Dark Wizard (1993)
Death Bringer: The Knight of Darkness (1992)
Demolition Man (1995)
Detonator Orgun (1992)
Devastator (1993)
Double Switch (1995)
Dracula Unleashed (1993)
Dragon's Lair (1994)
Dune (1993)
Dungeon Explorer (1994)
Dungeon Master II: Skullkeep (1994)
Dynamic Country Club (1993)
Earnest Evans (1991)
Earthworm Jim: Special Edition (1995)
Ecco the Dolphin (1993)
Ecco the Dolphin CD (1995)
Ecco: The Tides of Time (1994)
Egawa Suguro no Super League (1993)
ESPN Baseball Tonight (1994)
ESPN National Hockey Night (1994)
ESPN NBA Hangtime '95 (1994)
ESPN Sunday Night NFL (1994)
Eternal Champions: Challenge from the Dark Side (1994)
Eye of the Beholder (1994)
F-1 Circus CD (1994)
Fahrenheit (1995)*
Fatal Fury Special (1995)
Fhey Area (1992)
FIFA International Soccer (1994)
Final Fight CD (1993)
Flashback: The Quest for Identity (1993)
Flink (1994)
Formula One World Championship: Beyond the Limit (1994)
Frog Feast (2005)
Funky Horror Band (1991)
Gambler Jikko Chuushinha 2 (1992)
Game no Kanzume: Sega Games Can Vol. 1 (1994)
Game no Kanzume: Sega Games Can Vol. 2 (1994)
Genei Toshi: Illusion City (1993)
Ground Zero: Texas (1993)
Heart of the Alien (1994)
Heavy Nova (1991)
Heimdall (1994)
Hook (1992)
INXS (1992)
Iron Helix (1994)
Ishii Hisaichi no Daisekai (1994)
Jaguar XJ220 (1993)
Jango World Cup (1993)
Jeopardy! (1994)
Joe Montana's NFL Football (1993)
Jurassic Park (1993)
Keio Flying Squadron (1993)
Kids on Site (1994)
Kris Kross (1992)
The Lawnmower Man (1994)
Lethal Enforcers II: Gun Fighters (1994)
Lethal Enforcers (1993)
Links: The Challenge of Golf (1995)
Loadstar: The Legend of Tully Bodine (1994)
Lords of Thunder (1995)
Lunar: Eternal Blue (1994)
Lunar: The Silver Star (1992)
Mad Dog II: The Lost Gold (1994)
Mad Dog McCree (1993)
Mahou no Shoujo: Silky Lip (1992)
Mansion of Hidden Souls (1993)
Marko's Magic Football (1994)
Marky Mark and the Funky Bunch (1992)
Masked Rider (1994)
Mega Schwarzschild (1993)
MegaRace (1994)
Mickey Mania: The Timeless Adventures of Mickey Mouse (1994)
Microcosm (1994)
Midnight Raiders (1994)
Might and Magic III: Isles of Terra (1993)
Mighty Mighty Missile! (2005)
Mighty Morphin Power Rangers (1994)
Mortal Kombat (1994)
My Paint: The Animated Paint Program (1993)
NBA Jam (1993)
NFL Football Trivia Challenge (1994)
NFL's Greatest: San Francisco vs. Dallas 1978-1993 (1993)
NHL '94 (1993)
Night Striker (1993)
Night Trap (1992)*
The Ninja Warriors (1993)
Nostalgia 1907 (1993)
Novastorm (1993)
Panic! (1993)
Pitfall: The Mayan Adventure (1994)
Popful Mail (1994)
Power Factory featuring C+C Music Factory (1992)
Power Monger (1994)
Prince of Persia (1993)
Prize Fighter (1995)
Pro Yakyuu Super League CD (1992)
Psychic Dectective vol. 3: Psychic Detective Aya (1993)
Psychic Dectective vol. 4: Psychic Detective Orgel (1993)
Puggsy (1993)
Quiz Scramble Special (1992)
Racing Aces (1993)
Radical Rex (1994)
Ranma ½: Byakuran Aika (1993)
RDF Global Conflict (1995)
Record of Lodoss War (1994)
Revenge of the Ninja (1993)
Revengers of Vengeance (1993)
Rise of the Dragon (1992)
Road Avenger (1992)
Road Rash (1995)
Robo Aleste (1993)
Romance of the Three Kingdoms III: Dragon of Destiny (1993)
Samurai Shodown (1995)
The Secret of Monkey Island (1993)
Sega Classics Arcade Collection (1993)
Sengoku Denshou (1993)
Sensible Soccer (1993)
Sewer Shark (1992)
Shadow of the Beast II (1994)
Shadowrun (1996)
Sherlock Holmes: Consulting Detective Vol. II (1992)
Sherlock Holmes: Consulting Detective (1992)
Shin Megami Tensei (1994)
Shining Force CD (1994)
Silpheed (1993)
SimEarth (1993)
Slam City with Scottie Pippen (1992)*
The Smurfs (1995)
Snatcher (1994)
Sol-Feace (1991)
Sonic the Hedgehog CD (1993)
Soulstar (1994)
Space Ace (1993)
The Space Adventure (1995)
Spider-Man vs. The Kingpin (1993)
Star Strike (2000)
Star Wars Chess (1993)
Star Wars: Rebel Assault (1994)
StarBlade (1994)
Stellar Fire (1993)
Supreme Warrior (1994)*
Surgical Strike (1995)*
Syndicate (1993)
Tenbu: Mega CD Special (1992)
Tenka Fubu (1991)
The Terminator (1994)
Theme Park (1995)
The Third World War (1993)
Thunderhawk (1993)
Time Gal (1992)
Tomcat Alley (1994)
Trivial Pursuit (1994)
Ultraverse Prime / Microcosm (1994}
Urusei Yatsura: Dear My Friends (1994)
Vay (1993)
Warau Salesman (1993)
Wheel of Fortune (1994)
Who Shot Johnny Rock? (1993)
Wild Woody (1995)
Wing Commander (1994)
Winning Post (1993)
Wirehead (1995)
Wolfchild (1993)
Wonder Dog (1992)
World Cup USA 94 (1994)
WWF Rage in the Cage (1993)
Yumimi Mix (1993)

Launch titles

Spain

Italy

Sol-Feace/Cobra Command (pack-in)

Brazil

Magazine articles

Main article: Sega Mega-CD/Magazine articles.

Promotional material

Print advertisements

BR
ES (teaser; 1)
1993 07 - Teaser Mega CD.jpg

ES (teaser; 2)
ES (launch; 1)
1994 07 - Mega CD.jpg

ES (5)
1994 11 - Mega CD.jpg

ES (5)
1995 06 - Mega CD.jpg

ES (6)
1995 09 - Mega CD.jpg

ES (7)
1995 12 - Mega CD.jpg

ES (8)
Samsung megacd2.jpg

KR (Mega-CD 2)

Print advert in Sega Visions (US) #10: "November/December 1992" (1992-xx-xx)
also published in:

Electronic Gaming Monthly (US) #44: "March 1993" (1993-xx-xx)^[18]

Print advert in Electronic Gaming Monthly (US) #41: "December 1992" (1992-xx-xx)
also published in:

Electronic Gaming Monthly (US) #43: "February 1993" (199x-xx-xx)^[19]

Print advert in Sega Visions (US) #15: "October/November 1993" (1993-xx-xx)

Print advert in GamePro (US) #54: "January 1994" (199x-xx-xx)
also published in:

Sega Visions (US) #17: "February/March 1994" (199x-xx-xx)^[20]

Print advert in Game Players (US) #0710: "Vol. 7 No. 10 October 1994" (1994-xx-xx)
also published in:

Sega Visions (US) #21: "October/November 1994" (1994-xx-xx)^[21]
GamePro (US) #64: "November 1994" (1994-xx-xx)^[22]
Sega Visions (US) #22: "December/January 1994/1995" (1994-xx-xx)^[23]

Print advert in Computer & Video Games (UK) #158: "January 1995" (1994-12-15)

Print advert in Computer & Video Games (UK) #169: "December 1995" (1995-11-10)
also published in:

Mean Machines Sega (UK) #40: "February 1996" (1995-12-xx)^[24]
Sega Pro (UK) #57: "May 1996" (1996-03-21)^[25]

Print advert in Mega Force (FR) #21: "Octobre 1993" (1993-10-08)

Print advert in Sega Magazin (DE) #1: "September/Oktober 1993" (1993-09-01)

Print advert in Todo Sega (ES) #5: "Agosto 1993" (1993-0x-xx)

Print advert in Micromanía (segunda época) (ES) #64: "Septiembre 1993" (1993-0x-xx)

Print advert in Micromanía (segunda época) (ES) #65: "Octubre 1993" (1993-xx-xx)
also published in:

Micromanía (segunda época) (ES) #66: "Noviembre 1993" (1993-1x-xx)^[26]

Print advert in Micromanía (segunda época) (ES) #67: "Diciembre 1993" (1993-1x-xx)

Print advert in Mega Force (ES) #21: "Enero 1994" (1994-xx-xx)

Print advert in Mega Force (ES) #24: "Abril 1994" (1994-xx-xx)
also published in:

Todo Sega (ES) #14: "Mayo 1994" (1994-0x-xx)^[27]

Print advert in Megazone (AU) #28: "June 1993" (1993-0x-xx)
also published in:

Megazone (AU) #30: "August 1993" (1993-08-04)^[28]

Print advert in Megazone (AU) #29: "July 1993" (1993-0x-xx)
also published in:

Megazone (AU) #30: "August 1993" (1993-08-04)^[29]
Megazone (AU) #31: "September 1993" (1993-0x-xx)^[30]

Retailers

Print advert in GamesMaster (UK) #4: "April 1993" (1993-03-18)

Television advertisements

JP
US
US (Chill E.B.)
UK (Sega TV)
UK or AU?
UK (Horiscope)

Artwork

Japanese logo
North American logo
European/Australian logo

Patents

USD351385

External links

Sega CD Development Guide

Notes

↑ [767 cycles per vertex 767 cycles per vertex]
↑ [2301 cycles per triangle polygon 2301 cycles per triangle polygon]
↑ [3068 cycles per quad polygon 3068 cycles per quad polygon]
↑ [40 KB memory, 614.4 KB/s (15 FPS) to 1.2288 MB/s (30 FPS) bandwidth, 2.383275 CPU cycles per byte VRAM DMA transfer, 1.464285 MHz (15 FPS) to 2.928568 MHz (30 FPS) DMA, 9.571432 MHz (30 FPS) to 11.035715 MHz (15 FPS) remaining for polygons 40 KB memory, 614.4 KB/s (15 FPS) to 1.2288 MB/s (30 FPS) bandwidth, 2.383275 CPU cycles per byte VRAM DMA transfer, 1.464285 MHz (15 FPS) to 2.928568 MHz (30 FPS) DMA, 9.571432 MHz (30 FPS) to 11.035715 MHz (15 FPS) remaining for polygons]
↑
[32-pixel polygons, 15 FPS, scanline rendering, 250 cycles/scanline per poly, 3301 cycles/poly (4 scanlines)
- Polygon memory: 40 bytes per polygon, 8.594 KB memory (220 polygons per frame), 132 KB/s bandwidth (3300 polygons/sec)
32-pixel polygons, 15 FPS, scanline rendering, 250 cycles/scanline per poly, 3301 cycles/poly (4 scanlines)
- Polygon memory: 40 bytes per polygon, 8.594 KB memory (220 polygons per frame), 132 KB/s bandwidth (3300 polygons/sec)]
↑ [64-pixel polygons, 15 FPS, 250 cycles/scanline per poly, 5068 cycles/poly (8 scanlines) 64-pixel polygons, 15 FPS, 250 cycles/scanline per poly, 5068 cycles/poly (8 scanlines)]
↑
[ASIC's sprite/texture scaling and rotation capabilities can be used for texture mapping rasterization
- CPU cycles: 2 ASIC command cycles per texel, 128 ASIC command cycles per 8×8 texel texture, 77 cycles DMA transfer (32 bytes) per 8×8 texel texture, 5273 cycles (205 texture cycles) per 8×8 texel polygon
- Polygon/Texture memory: 72 bytes per textured polygon, 9.844 KB memory (140 polygons per frame), 151.2 KB/s bandwidth (2100 polygons/sec)
ASIC's sprite/texture scaling and rotation capabilities can be used for texture mapping rasterization
- CPU cycles: 2 ASIC command cycles per texel, 128 ASIC command cycles per 8×8 texel texture, 77 cycles DMA transfer (32 bytes) per 8×8 texel texture, 5273 cycles (205 texture cycles) per 8×8 texel polygon
- Polygon/Texture memory: 72 bytes per textured polygon, 9.844 KB memory (140 polygons per frame), 151.2 KB/s bandwidth (2100 polygons/sec)]

References

Sega Mega-CD
Topics	Technical specifications \| History \| Magazine articles \| Promotional material
Hardware	Mega CD (Asia \| North America \| Western Europe \| Eastern Europe \| South America \| Australasia \| Africa) Sega Multi-Mega (Asia \| North America \| Europe \| South America \| Australasia) Wondermega \| LaserActive \| CSD-G1M
Misc. hardware	CD BackUp RAM Cart \| Mega-CD Karaoke \| Pro CDX
Development tools	SNASM Mega-CD \| PsyQ Mega-CD SDK \| PSY-Q CD Emulation System (Mega-CD)
Unreleased hardware	Game Genie

Sega Mega Drive
Topics	Technical specifications (Hardware comparison) \| History \| List of games \| Magazine articles \| Promotional material \| Merchandise \| Cartridges \| TradeMark Security System
Hardware	Japan \| North America \| Western Europe \| Eastern Europe \| South America \| Asia \| South Korea \| Australasia \| Africa EZ Games \| Genesis 3 \| LaserActive \| Mega Jet \| Mega PC \| Mega Play \| Mega-Tech System \| Mega 6 \| Nomad \| Teradrive \| Mega Drive Mini \| Mega Drive Mini 2 New Mega Drive \| Tianli VCD/DVD Players \| "Consoles on a chip" \| Licensed clones (Magic 2 \| Mega Game II \| Power Pegasus \| Super Bitman) Unlicensed clones
Add-ons	Game Box \| Power Base Converter \| Mega-CD \| 32X (Mega-CD 32X) \| Mega Modem \| Demo System DS-16
Cases	Sega Genesis Nomad Carrying Case \| System Carry Case
Controllers	Control Pad \| Six Button Control Pad \| 6 Button Arcade Pad \| Arcade Power Stick 6B \| Konami Justifier \| MK-1470 Action Chair \| Activator \| Arcade Power Stick \| Keyboard \| MegaFire \| Mouse \| Mega Stick \| Menacer \| Remote Arcade System \| Ten Key Pad \| Third Party Controllers
Accessories	4 Way Play \| AC adaptor \| Cleaning System \| Control Pad Extension Cord \| Game Factory \| Genesis Speakers \| Headset \| HeartBeat Catalyst \| Microphone \| Region converter cartridges \| Mega Terminal \| Nomad PowerBack \| RF Unit \| SCART Cable \| Stereo Audio Video Cable \| Team Player \| Video Monitor Cable \| Third-party AC adaptors \| Third Party Accessories
Network services	Sega Channel \| Sega Game Toshokan \| Mega Anser \| Mega Net \| TeleBradesco Residência \| XB∀ND
Development tools	ERX 308P \| ERX 318P \| Sprobe \| SNASM68K \| SNASM2 (Mega Drive) \| SNASM2 (32X) \| PSY-Q Development System (Mega Drive) \| PSY-Q Development System (32X) \| 32X CartDev \| Sega Mars Development Aid System \| Sega 32X Development Target
Unreleased	Edge 16 \| Floppy Disk Drive \| Mega Play 1010 \| Sega VR \| Teleplay System \| Video Jukebox

83	84	85	86	88	90	91	93	94	98	06
Sega Home Video Game Systems
SG-1000	SG-1000 II			Mega Drive			Mega Drive II
SC-3000						Mega-CD	Mega-CD II		Genesis 3
		Sega Mark III						32X	Dreamcast
			Master System		Master System II
			AI Computer		Game Gear
								Saturn
							Pico			Beena

[767_cycles_per_vertex-13] [767 cycles per vertex 767 cycles per vertex]

[2301_cycles_per_triangle_polygon-14] [2301 cycles per triangle polygon 2301 cycles per triangle polygon]

[3068_cycles_per_quad_polygon-15] [3068 cycles per quad polygon 3068 cycles per quad polygon]

[40_KB_memory.2C_614.4_KB.2Fs_.2815_FPS.29_to_1.2288_MB.2Fs_.2830_FPS.29_bandwidth.2C_2.383275_CPU_cycles_per_byte_VRAM_DMA_transfer.2C_1.464285_MHz_.2815_FPS.29_to_2.928568_MHz_.2830_FPS.29_DMA.2C_9.571432_MHz_.2830_FPS.29_to_11.035715_MHz_.2815_FPS.29_remaining_for_polygons-16] [40 KB memory, 614.4 KB/s (15 FPS) to 1.2288 MB/s (30 FPS) bandwidth, 2.383275 CPU cycles per byte VRAM DMA transfer, 1.464285 MHz (15 FPS) to 2.928568 MHz (30 FPS) DMA, 9.571432 MHz (30 FPS) to 11.035715 MHz (15 FPS) remaining for polygons 40 KB memory, 614.4 KB/s (15 FPS) to 1.2288 MB/s (30 FPS) bandwidth, 2.383275 CPU cycles per byte VRAM DMA transfer, 1.464285 MHz (15 FPS) to 2.928568 MHz (30 FPS) DMA, 9.571432 MHz (30 FPS) to 11.035715 MHz (15 FPS) remaining for polygons]

[32-pixel_polygons.2C_15_FPS.2C_.5B.5Bwikipedia:Scanline_rendering.7Cscanline_rendering.5D.5D.2C_250_cycles.2Fscanline_per_poly.2C_3301_cycles.2Fpoly_.284_scanlines.29.0A.2A_Polygon_memory:_40_bytes_per_polygon.2C_8.594_KB_memory_.28220_polygons_per_frame.29.2C_132_KB.2Fs_bandwidth_.283300_polygons.2Fsec.29-17] [32-pixel polygons, 15 FPS, scanline rendering, 250 cycles/scanline per poly, 3301 cycles/poly (4 scanlines)
Polygon memory: 40 bytes per polygon, 8.594 KB memory (220 polygons per frame), 132 KB/s bandwidth (3300 polygons/sec)
32-pixel polygons, 15 FPS, scanline rendering, 250 cycles/scanline per poly, 3301 cycles/poly (4 scanlines)
Polygon memory: 40 bytes per polygon, 8.594 KB memory (220 polygons per frame), 132 KB/s bandwidth (3300 polygons/sec)]

[6] Polygon memory: 40 bytes per polygon, 8.594 KB memory (220 polygons per frame), 132 KB/s bandwidth (3300 polygons/sec)

[7] Polygon memory: 40 bytes per polygon, 8.594 KB memory (220 polygons per frame), 132 KB/s bandwidth (3300 polygons/sec)]

[64-pixel_polygons.2C_15_FPS.2C_250_cycles.2Fscanline_per_poly.2C_5068_cycles.2Fpoly_.288_scanlines.29-18] [64-pixel polygons, 15 FPS, 250 cycles/scanline per poly, 5068 cycles/poly (8 scanlines) 64-pixel polygons, 15 FPS, 250 cycles/scanline per poly, 5068 cycles/poly (8 scanlines)]

[ASIC.27s_sprite.2Ftexture_scaling_and_rotation_capabilities_can_be_used_for_texture_mapping_rasterization.0A.2ACPU_cycles:_2_ASIC_command_cycles_per_texel.2C_128_ASIC_command_cycles_per_8.C3.978_texel_texture.2C_77_cycles_DMA_transfer_.2832_bytes.29_per_8.C3.978_texel_texture.2C_5273_cycles_.28205_texture_cycles.29_per_8.C3.978_texel_polygon.0A.2APolygon.2FTexture_memory:_72_bytes_per_textured_polygon.2C_9.844_KB_memory_.28140_polygons_per_frame.29.2C_151.2_KB.2Fs_bandwidth_.282100_polygons.2Fsec.29-19] [ASIC's sprite/texture scaling and rotation capabilities can be used for texture mapping rasterization
CPU cycles: 2 ASIC command cycles per texel, 128 ASIC command cycles per 8×8 texel texture, 77 cycles DMA transfer (32 bytes) per 8×8 texel texture, 5273 cycles (205 texture cycles) per 8×8 texel polygon

Polygon/Texture memory: 72 bytes per textured polygon, 9.844 KB memory (140 polygons per frame), 151.2 KB/s bandwidth (2100 polygons/sec)
ASIC's sprite/texture scaling and rotation capabilities can be used for texture mapping rasterization
CPU cycles: 2 ASIC command cycles per texel, 128 ASIC command cycles per 8×8 texel texture, 77 cycles DMA transfer (32 bytes) per 8×8 texel texture, 5273 cycles (205 texture cycles) per 8×8 texel polygon

Polygon/Texture memory: 72 bytes per textured polygon, 9.844 KB memory (140 polygons per frame), 151.2 KB/s bandwidth (2100 polygons/sec)]

[10] CPU cycles: 2 ASIC command cycles per texel, 128 ASIC command cycles per 8×8 texel texture, 77 cycles DMA transfer (32 bytes) per 8×8 texel texture, 5273 cycles (205 texture cycles) per 8×8 texel polygon

[11] Polygon/Texture memory: 72 bytes per textured polygon, 9.844 KB memory (140 polygons per frame), 151.2 KB/s bandwidth (2100 polygons/sec)

[12] CPU cycles: 2 ASIC command cycles per texel, 128 ASIC command cycles per 8×8 texel texture, 77 cycles DMA transfer (32 bytes) per 8×8 texel texture, 5273 cycles (205 texture cycles) per 8×8 texel polygon

[13] Polygon/Texture memory: 72 bytes per textured polygon, 9.844 KB memory (140 polygons per frame), 151.2 KB/s bandwidth (2100 polygons/sec)]

[:File:SegaVisions_US_09.pdf_p6-1] 1.0 ^1.1 File:SegaVisions US 09.pdf, page 6

[:File:MegaPlay_US_11.pdf_p16-2] File:MegaPlay US 11.pdf, page 16

[:File:CVG_UK_138.pdf_p8-3] 3.0 ^3.1 File:CVG UK 138.pdf, page 8

[:File:VideoGame_BR_31.pdf_p6-4] File:VideoGame BR 31.pdf, page 6

[:File:MegaFun_DE_1993-09.pdf_p30-5] 5.0 ^5.1 File:MegaFun DE 1993-09.pdf, page 30

[:File:PlayerOne_FR_034.pdf_p53-6] File:PlayerOne FR 034.pdf, page 53

[https:.2F.2Fweb.archive.org.2Fweb.2F20160303233011.2A.2Fhttp:.2F.2Fsega.jp.2Ffb.2Fsegahard.2Fmcd.2Fmcd2.html-7] ttp://sega.jp/fb/segahard/mcd/mcd2.html (Wayback Machine: 2016-03-03 23:30)

[:File:SegaForceMega_UK_05.pdf_p19-8] File:SegaForceMega UK 05.pdf, page 19

[:File:MCD_MaintenanceManual_Export_RevA.pdf_p102-9] 9.0 ^9.1 File:MCD MaintenanceManual Export RevA.pdf, page 102

[.5Bhttps:.2F.2Fbooks.google.co.uk.2Fbooks.3Fid.3DdeBFx7QAwsQC.26pg.3DPA556.23v.3Donepage.26q.26f.3Dfalse_Encyclopedia_of_Video_Games.5D-10] Encyclopedia of Video Games

[Sega_CD_programming_FAQ_.281998-12-06.29-11] 11.0 ^11.1 Sega CD programming FAQ (1998-12-06)

[.5Bhttps:.2F.2Fyoutu.be.2FVyme7CT04cw_GASEGA68k.27s_Genesis_Fully_3D_Star_Fox_Demo:_Stock_and_12_MHz_Overclock.5D.2C_YouTube-12] GASEGA68k's Genesis Fully 3D Star Fox Demo: Stock and 12 MHz Overclock, YouTube

[:File:MCD_MaintenanceManual_Export_RevA.pdf_p-20] 13.0 ^13.1 File:MCD MaintenanceManual Export RevA.pdf

[:File:TC511664B_datasheet.pdf_p-21] File:TC511664B datasheet.pdf

[:File:TC51832_datasheet.pdf_p-22] File:TC51832 datasheet.pdf

[:File:MB8464A_datasheet_2.pdf_p-23] File:MB8464A datasheet 2.pdf

[:File:SelectRound_FR_01.pdf_p2-24] File:SelectRound FR 01.pdf, page 2

[:File:EGM_US_044.pdf_p132-25] Electronic Gaming Monthly, "March 1993" (US; 1993-xx-xx), page 132

[:File:EGM_US_043.pdf_p18-26] Electronic Gaming Monthly, "February 1993" (US; 199x-xx-xx), page 18

[:File:SegaVisions_US_17.pdf_p74-27] Sega Visions, "February/March 1994" (US; 199x-xx-xx), page 74

[:File:SegaVisions_US_21.pdf_p40-28] Sega Visions, "October/November 1994" (US; 1994-xx-xx), page 40

[:File:GamePro_US_064.pdf_p80-29] GamePro, "November 1994" (US; 1994-xx-xx), page 80

[:File:SegaVisions_US_22.pdf_p64-30] Sega Visions, "December/January 1994/1995" (US; 1994-xx-xx), page 64

[:File:MeanMachinesSega40UK.pdf_p2-31] Mean Machines Sega, "February 1996" (UK; 1995-12-xx), page 2

[:File:SegaPro_UK_57.pdf_p2-32] Sega Pro, "May 1996" (UK; 1996-03-21), page 2

[:File:Micromania2_ES_066.pdf_p2-33] Micromanía (segunda época), "Noviembre 1993" (ES; 1993-1x-xx), page 2

[:File:TodoSega_ES_14.pdf_p6-34] Todo Sega, "Mayo 1994" (ES; 1994-0x-xx), page 6

[:File:Megazone_AU_30.pdf_p24-35] Megazone, "August 1993" (AU; 1993-08-04), page 24

[:File:Megazone_AU_30.pdf_p40-36] Megazone, "August 1993" (AU; 1993-08-04), page 40

[:File:Megazone_AU_31.pdf_p44-37] Megazone, "September 1993" (AU; 1993-0x-xx), page 44

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Sega Mega-CD

From Sega Retro

Contents

Hardware

Models

Mega-CD

Mega-CD 2

Mega Drive combos: JVC Wondermega/X'eye, Pioneer LaserActive, Sega Multi-Mega, and Aiwa Mega CD

Technical specifications

CPU

Graphics

Sound

Memory

Storage

Boot ROM

Other

History

Games

List of games

Launch titles

Japan

North America

United Kingdom

France

Germany

Spain

Italy

Brazil

Magazine articles

Promotional material

Print advertisements

Retailers

Television advertisements

Artwork

Patents

External links

Notes

References