CPS-2
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| Capcom Play System 2 | |
|---|---|
 Super Street Fighter II B board |
|
| Developer(s) | Capcom |
| Publisher(s) | Capcom |
| Release date | September 1993 |
| Input methods | 8-way joystick, from 3 to 6 buttons |
| Cabinet | upright |
| CPU | Motorola 68000 (@ 16 MHz) |
| Sound | Sound CPU: Z80 (@ 8 MHz) Q-Sound (@ 4 MHz) |
| Display | Raster, 384 x 224 pixels (Horizontal), 4096 colors |
The CPS-2 (CPシステムII shīpī shisutemu tsū?) or Capcom Play System 2 is an arcade system board that debuted in 1993 with Super Street Fighter 2 and Dungeons & Dragons: Tower of Doom.
Contents |
[edit] History
The earlier Capcom system board, CPS-1, while successful, was very vulnerable to bootleggers making unauthorized copies of the games. In order to rectify the situation, Capcom took the CPS-1 hardware (with QSound) with minimal changes and employed encryption on the program ROMs to prevent software piracy.
The CPS-2 consists of 2 separate parts; the A board, which connects to the JAMMA harness and contains components common between all CPS-2 games, and the B board, which contains the game itself. The relationship between the A and B board is basically the same as that between a home video game console and cartridge. CPS-2 A and B boards are color-coded by region, and each board can only be used with its same-colored mate. The exception to this is that the blue and green boards can be used together.
The B boards hold battery-backed memory containing decryption keys needed for the games to run. As time passes, these batteries lose their charge and the games stop functioning, because the CPU cannot execute any code without the decryption keys. This is known to hobbyists as the "suicide battery". It is possible to bypass the original battery and swap it out with a new one[1] in-circuit, but this must be done before the original falls below 2V or the keys will be lost.
Due to the heavy encryption, it was believed for a long time that CPS-2 emulation was next to impossible. However, in January 2001, the CPS-2 Shock group[2] was able to obtain unencrypted program data by hacking into the hardware, which they distributed as XOR difference tables to produce the unencrypted data from the original ROM images, making emulation possible, as well as restoring cartridges that had been erased because of the suicide system.
In January 2007, the encryption method was fully reverse-engineered by Andreas Naive[3] and Nicola Salmoria. It has been determined that the encryption employs two four-round Feistel ciphers with a 64-bit key.[4][5] The algorithm was thereafter implemented in this state for all known CPS-2 games in MAME.
Also thanks to the encryption, the system was never bootlegged until unencrypted program data became available.
[edit] Region colors
- Blue: U.S.A., Canada, and Europe
- Green: Japan
- Orange: South America
- Gray: Asia
- Yellow: "Region 0" (available by rental only)
- Black: "Region 0" incorporated A and B board in the same unit
[edit] List of games
| Release date | Developer | English title | Japanese title | Genre |
|---|---|---|---|---|
| 2000-06-20 | Eighting/Raizing | 1944: The Loop Master | 1944 The Loop Master (1944 THE LOOP MASTER) |
Shoot 'em up |
| 1995-12-07 | Capcom | 19XX: The War Against Destiny | 19XX The War Against Destiny (19XX -THE WAR AGAINST DESTINY-) |
Shoot 'em up |
| 1994-05-20 | Capcom | Alien vs Predator | Alien VS Predator (エイリアンVSプレデター) |
Beat 'em up |
| 1994-09-16 | Capcom | Armored Warriors | Powered Gear: Strategic Variant Armor Equipment (パワードギア -STRATEGIC VARIANT ARMOR EQUIPMENT-) |
Beat 'em up |
| 1997-03-19 | Capcom | Battle Circuit | Battle Circuit (バトルサーキット) |
Beat 'em up |
| 1997-07-22 | Capcom | Capcom Sports Club | Capcom Sports Club (カプコンスポーツクラブ) |
Sports game |
| 1995-04-20 | Capcom | Cyberbots: Full Metal Madness | Cyberbots: Full Metal Madness (サイバーボッツ -FULL METAL MADNESS-) |
Versus Fighting |
| 1994-07-05 | Capcom | Darkstalkers: The Night Warriors | Vampire: The Night Warriors (ヴァンパイア -The Night Warriors-) |
Versus Fighting |
| 2000-01-21 | Eighting/Raizing | Dimahoo | Great Mahō Daisakusen (グレート魔法大作戦) |
Shoot 'em up |
| 1996-02-06 | Capcom | Dungeons & Dragons: Shadow over Mystara | Dungeons & Dragons: Shadow over Mystara (ダンジョンズ&ドラゴンズ シャドーオーバーミスタラ) |
Beat 'em up |
| 1994-01-13 | Capcom | Dungeons & Dragons: Tower of Doom | Dungeons & Dragons: Tower of Doom (ダンジョンズ&ドラゴンズ タワーオブドゥーム) |
Beat 'em up |
| 1993-12-03 | Capcom | Eco Fighters | Ultimate Ecology (アルティミットエコロジー) |
Shoot 'em up |
| 1999-02-22 | Takumi | Giga Wing | Giga Wing (ギガウイング) |
Shoot 'em up |
| 2003-12-22 | Capcom | Hyper Street Fighter II: The Anniversary Edition | Hyper Street Fighter II (ハイパーストリートファイターII) |
Versus Fighting |
| 1999-05-27 | Capcom | Jangokushi: Haō no Saihai | Jangokushi Haō no Saihai (雀國志 覇王の采牌) |
Puzzle game |
| 2001-08-20 | Mitchell | Janpai Puzzle Chōkō | Janpai Puzzle Chōkō (雀牌パズル 長江) |
Puzzle game |
| 2000-04-12 | Takumi | Mars Matrix: Hyper Solid Shooting | Mars Matrix (マーズマトリックス) |
Shoot 'em up |
| 1995-10-24 | Capcom | Marvel Super Heroes | Marvel Super Heroes (MARVEL SUPER HEROES) |
Versus Fighting |
| 1997-06-20 | Capcom | Marvel Super Heroes vs. Street Fighter | Marvel Super Heroes vs. Street Fighter (MARVEL SUPER HEROES VS. STREET FIGHTER) |
Versus Fighting |
| 1998-01-12 | Capcom | Marvel vs. Capcom: Clash of Super Heroes | Marvel vs. Capcom: Clash of Super Heroes (MARVEL VS. CAPCOM CLASH OF SUPER HEROES) |
Versus Fighting |
| 1995-09-22 | Capcom | Mega Man: The Power Battle | Rockman: The Power Battle (ロックマン ザ・パワーバトル) |
Versus Fighting |
| 1996-07-08 | Capcom | Mega Man 2: The Power Fighters | Rockman 2: The Power Fighters (ロックマン2 ザ・パワーファイターズ) |
Versus Fighting |
| 2000-10-10 | Mitchell | Mighty! Pang | Mighty Pang (マイティ・パン) |
Platformer |
| 1995-03-02 | Capcom | Night Warriors: Darkstalkers' Revenge | Vampire Hunter: Darkstalkers' Revenge (ヴァンパイアハンター -Darkstalkers' Revenge-) |
Versus Fighting |
| 2001-01-17 | Cave | Progear | Progear no Arashi (プロギアの嵐) |
Shoot 'em up |
| 2001-02-05 | Mitchell | Puzz Loop 2 | Puzz Loop 2 (パズループ2) |
Puzzle game |
| 1996-08-26 | Capcom | Quiz Nanairo Dreams: Nijiirochō no Kiseki | Quiz Nanairo Dreams: Nijiirochō no Kiseki (クイズなないろDREAMS 虹色町の奇跡) |
Quiz game |
| 1994-08-08 | Capcom | Ring of Destruction: Slammasters II | Super Muscle Bomber: The International Blowout (スーパーマッスルボマー -THE INTERNATIONAL BLOWOUT-) |
Versus Fighting |
| 1995-06-05 | Capcom | Street Fighter Alpha | Street Fighter Zero (ストリートファイターZERO) |
Versus Fighting |
| 1996-02-27 | Capcom | Street Fighter Alpha 2 | Street Fighter Zero 2 (ストリートファイターZERO2) Street Fighter Zero 2 Alpha (ストリートファイターZERO2 ALPHA) |
Versus Fighting |
| 1998-06-29 | Capcom | Street Fighter Alpha 3 | Street Fighter Zero 3 (ストリートファイターZERO3) |
Versus Fighting |
| 1997-09-04 | Capcom | Super Gem Fighter Mini Mix | Pocket Fighter (ポケットファイター) |
Versus Fighting |
| 1996-05-29 | Capcom | Super Puzzle Fighter II Turbo | Super Puzzle Fighter II X (スーパーパズルファイターIIX) |
Puzzle game |
| 1993-09-10 | Capcom | Super Street Fighter II: The New Challengers Super Street Fighter II: Tournament Battle |
Super Street Fighter II (スーパーストリートファイターII) |
Versus Fighting |
| 1994-02-23 | Capcom | Super Street Fighter II Turbo | Super Street Fighter II X: Grand Master Challenge (スーパーストリートファイターIIX) |
Versus Fighting |
| 1997-09-13 | Capcom | Vampire Hunter 2: Darkstalkers' Revenge | Vampire Hunter 2: Darkstalkers' Revenge (ヴァンパイアハンター2 -Darkstalkers' Revenge-) |
Versus Fighting |
| 1997-05-19 | Capcom | Vampire Savior: The Lord of Vampire | Vampire Savior: The Lord of Vampire (ヴァンパイアセイヴァー -The Lord of Vampire-) |
Versus Fighting |
| 1997-09-13 | Capcom | Vampire Savior 2: The Lord of Vampire | Vampire Savior 2: The Lord of Vampire (ヴァンパイアセイヴァー2 -The Lord of Vampire-) |
Versus Fighting |
| 1994-12-08 | Capcom | X-Men: Children of the Atom | X-Men: Children of the Atom (X-MEN Children of The Atom) |
Versus Fighting |
| 1996-09-09 | Capcom | X-Men vs. Street Fighter | X-Men vs. Street Fighter (X-MEN VS. STREET FIGHTER) |
Versus Fighting |
