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choko: MAME ROM Information.


Jong Pai Puzzle Choko (c) 2001 Mitchell.

An adult shanghai game from Mitchell. The objective is to clear the board of matching tiles before the timer runs out.

Each level consists a board with two or more columns of tiles and walls slowly moving toward the center of the board. Every time a matching pair of tiles is cleared from the board the two columns momentarily shift away from the center. The game is lost if the opposing columns of tiles run into each other or into the wall. In order to legally remove matching tiles no walls or other tiles can be in a path with two or fewer bends between the matching tiles. Once per stage, the player can request help and the two columns will shift to their starting positions and matching tiles will be highlighted for a short time. If the player cannot legally remove any more tiles then the board is 'deadlocked', and the game is lost.

If the player clears the board before the timer runs out, the background girl will change into a more revealing state of undress and this new image of her will be the background for the next stage. If the timer reaches zero the player can still attempt to clear the board but the background image will not change. The game features four girls with two background images each and a topless image that is revealed after defeating the girl's second stage within the time limit.

If the game is lost, upon continuing the player may select to attempt to clear the same board or try a new board of tiles.


Capcom Play System II hardware (CPS II)

[CP-S II No. 37]

Main CPU : 68000 (@ 11.8 Mhz), Z80 (@ 8 Mhz)

Sound Chips : Q-Sound (@ 4 Mhz)

Screen orientation : Horizontal

Video resolution : 384 x 224 pixels

Screen refresh : 59.63 Hz

Palette colors : 4096

Players : 2

Control : 8-way Joystick

Buttons : 6


Released in August 2001, only in Japan. The title translates from Japanese as 'Yangtze River Mahjong Tile Puzzle'. The kanji 'Choko' is the Japanese name of the Chinese Yangtze River.


Concept Designer : Akihiro Akaishi

Planner : Futoshi Kuwahara, Satoru Tsujita

Programmer : Kaname Wada, Shigeru Komiya

Graphic Designer Object : Eiko Kato, Kazue Matsunaga, TTO

Graphic Designer Scroll : Satoshi Ida, Sachiko Shibuya, Hiroshi Katayama

Sound BGM Composer : Takafumi Wada, Takashi Kouga, Tomoyuki Takano

Sound SE Designer : Shin Yamazaki

Executive Producer : Roy Ozaki, Koichi Niida


Game's rom.

MAME Info:

0.93u2 [?]

0.59 [?]


- 0.125u1: Changed description to 'Janpai Puzzle Choukou (Japan 010820)'.

- 0.112u2: Guru added missing gfx1/sound1 roms and CPS2 key - Game now playable.

- 0.111u3: Andreas Naive and Nicola Salmoria replaced CPS2 CHD with preliminary decryption function.

- 0.110u4: Removed user1 rom in Choko.

- 0.110u3: David Haywood added raw decryption table to choko. Enabled the use of the large CHD-based tables by default.

- 0.104u4: Exchanged choko-opcodes.bin user1 rom with new XOR tkojx.bin rom.

- 0.104u3: Guru and Charles MacDonald fixed Choko - Game now playable. Added choko-opcodes.bin user1 rom.

- 10th October 2005: Guru - Choukou arrived from Japan. Purchased by the Dumping Project Team.

- 31st August 2005: Dumping Project - Our Japanese contact just shipped a box to Guru with a Capcom CPS-2 'Choukou'.

- 0.97u2: Marked all sound1 roms as 'NO GOOD DUMP KNOWN'.

- 0.97: Marked all gfx1 roms as 'NO GOOD DUMP KNOWN'.

- 0.96u3: Added missing gfx1 and sound1 roms.

- 0.93u2: Added 'Choko (Japan 010820)' (Mitchell 2001, distributed by Capcom).

- 0.59: Added Choko (Japan 010820 (Testdriver).

LEVELS: 4 - 9 (beginner mode - normal mode)

Other Emulators:

* FB Alpha

* Kawaks

* Raine

Recommended Games (Shanghai 2):


Match It

Match It II


Black Touch (Korea)



Miss Puzzle

Puzzle Game Rong Rong


Double Point

One + Two

Cross Pang



Janpai Puzzle Choukou

Romset: 21632 kb / 13 files / 4.41 zip

MAME XML Output:

       <game name="choko" sourcefile="cps2.c">
              <description>Janpai Puzzle Choukou (Japan 010820)</description>
              <manufacturer>Mitchell (Capcom license)</manufacturer>
              <rom name="tkoj.03" size="524288" crc="11f5452f" sha1="1575729cdbb857a3a780df6e3e0efd6968926fb8" region="maincpu" offset="0"/>
              <rom name="tkoj.04" size="524288" crc="68655378" sha1="a2d82996394cc28622e93f6c338f9b78aa798775" region="maincpu" offset="80000"/>
              <rom name="tkoj1_d.simm1" size="2097152" crc="6933377d" sha1="a79e129e5faaadd401379905ac76a24fa616d736" region="gfx" offset="0"/>
              <rom name="tkoj1_c.simm1" size="2097152" crc="7f668950" sha1="247b2b3fa24afd43b0fe6cfb3df987a38c7385cf" region="gfx" offset="1"/>
              <rom name="tkoj1_b.simm1" size="2097152" crc="cfb68ca9" sha1="36460724b8df36a4ccf88228d9d5f027714c6628" region="gfx" offset="2"/>
              <rom name="tkoj1_a.simm1" size="2097152" crc="437e21c5" sha1="2c4ace6fa421c91effab8ab8db931b8451b8e6b1" region="gfx" offset="3"/>
              <rom name="tkoj3_d.simm3" size="2097152" crc="a9e32b57" sha1="0ddbfefa0cc110e46297ecbfbf4b8bc87ce43c95" region="gfx" offset="4"/>
              <rom name="tkoj3_c.simm3" size="2097152" crc="b7ab9338" sha1="0bb57640eed167e672b5f40cdff0a7b177ff2507" region="gfx" offset="5"/>
              <rom name="tkoj3_b.simm3" size="2097152" crc="4d3f919a" sha1="eb7f90415a263f0a2b94d9699d72c1d14b4fdaad" region="gfx" offset="6"/>
              <rom name="tkoj3_a.simm3" size="2097152" crc="cfef17ab" sha1="1de738c1e537c3df80171e82bc1cc05a25d9cc13" region="gfx" offset="7"/>
              <rom name="tko.01" size="131072" crc="6eda50c2" sha1="7e67c104094a3ced8b3fdd81f52ee42483b30fc5" region="audiocpu" offset="0"/>
              <rom name="tkoj5_a.simm5" size="2097152" crc="ab45d509" sha1="c58cf87d3828dfe0643cf4c58615f3352bd45508" region="qsound" offset="0"/>
              <rom name="tkoj5_b.simm5" size="2097152" crc="fa905c3d" sha1="3eae65b01d50ec4ec4aeff49f434b9b88a50463c" region="qsound" offset="1"/>
              <chip type="cpu" tag="maincpu" name="68000" clock="16000000"/>
              <chip type="cpu" tag="audiocpu" name="Z80" clock="8000000"/>
              <chip type="audio" tag="lspeaker" name="Speaker"/>
              <chip type="audio" tag="rspeaker" name="Speaker"/>
              <chip type="audio" tag="qsound" name="Q-Sound" clock="4000000"/>
              <display tag="screen" type="raster" rotate="0" width="384" height="224" refresh="59.629403" pixclock="8000000" htotal="518" hbend="64" hbstart="448" vtotal="259" vbend="16" vbstart="240" />
              <sound channels="2"/>
              <input players="1" buttons="3" coins="2" service="yes">
                     <control type="joy" ways="8"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="supported" palettesize="3072"/>

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