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ufosensi: MAME ROM Information.


UFO Senshi Youko-Chan (c) 1988 Sega.


Sega System 2 hardware

Game ID : 834-6659

Main CPU : Z80 (@ 4 Mhz)

Sound CPU : Z80 (@ 4 Mhz)

Sound Chips : SN76496 (@ 4 Mhz), SN76496 (@ 2 Mhz)

Screen orientation : Horizontal

Video resolution : 240 x 208 pixels

Screen refresh : 60.00 Hz

Palette colors : 1536

Players : 2

Control : 8-way joystick

Buttons : 2


The title of this game translates from Japanese as 'Extraterrestrial Soldier Youko-chan'.


Test Mode : set DIP Items as Difficulty = Easy, Lives = 5, Cabinet = Upright, Continue = On, Invulnerability = On. Then reset the machine.


Game's rom.

MAME Info:

0.74u2 [Nicola Salmoria]

0.34b3 [Nicola Salmoria]

< Japan >


- To enter Test Mode all dipswitches in DSW1 must be ON (example Difficulty = Easy). To get Infinite Lives all dipswitches in DSW0 must be ON.


- 0.130u4: Changed visible area to 256x224.

- 0.130u3: Renamed (ufosensb) to (ufosensib).

- 0.115u4: Replaced SN76496 sound with SN76489.

- 0.113u3: Nicola Salmoria added proper MC8123 decryption code and MC-8123B 317-0064.key to Ufo Senshi. Changed description to 'Ufo Senshi Yohko Chan (MC-8123, 317-0064)'.

- 0.95: Pierpaolo Prazzoli fixed background in second round don't scroll and added 3rd button for change weapon. Added dipswitches 'Allow Continue' and 'Invulnerability'.

- 25th March 2005: Pierpaolo Prazzoli - Added row-scroll to Ufo Senshi Yohko Chan.

- 0.94u1: Fixed 'Cabinet' dipswitch.

- 0.93: Pierpaolo Prazzoli added clone Ufo Senshi Yohko Chan (bootleg not encrypted). Nicola Salmoria added MC8123 317-0064 decryption table to Ufo Senshi Yohko Chan - Game now playable. Added 2nd SN76496 (4MHz) sound and changed visible area to 240x208.

- 17th February 2005: f205v, Corrado Tomaselli and Gnoppi dumped Ufo Senshi Yohko Chan (not encrypted).

- 18th February 2005: Pierpaolo Prazzoli - MAME Italian (http://www.mame.emuita.it/) guys found a decrypted version of Ufo Senshi Yohko Chan.

- 0.74u2: Re-added Ufo Senshi Yohko Chan (Sega 1988).

- 0.54: Moved Ufo Senshi Yohko Chan to (Testdriver).

- 0.34b3: Nicola Salmoria added Ufo Senshi Yohko Chan (Sega 1988), not working due to encryption.

- 30th August 1998: J-ROM dumped Ufo Senshi Yohko Chan (MC-8123, 317-0064).


Recommended Games (Maze Extra):


Super Bagman



Crystal Castles

Flip & Flop (Max-A-Flex)

Money Money

Uncle Poo



The Tower of Druaga

Doki Doki Penguin Land

The Return of Ishtar

Kid no Hore Hore Daisakusen

Mustache Boy

Marchen Maze

Ufo Senshi Yohko Chan

Evil Stone

Magical Crystals

Cheese Chase

Mad Donna

Princess Clara Daisakusen

Burglar X


Monkey Ball

Monster Farm Jump

Romset: 361 kb / 16 files / 173.6 zip

MAME XML Output:

       <game name="ufosensi" sourcefile="system1.c">
              <description>Ufo Senshi Yohko Chan (MC-8123, 317-0064)</description>
              <rom name="epr11661.90" size="32768" crc="f3e394e2" sha1="a295a2aa80a164a548995822c46f32fd9fad7a0b" region="maincpu" offset="0"/>
              <rom name="epr11662.91" size="32768" crc="0c2e4120" sha1="d81fbefa95868e3efd29ef3bacf108329781ca17" region="maincpu" offset="10000"/>
              <rom name="epr11663.92" size="32768" crc="4515ebae" sha1="9b823f10999746292762c2f0a1ca9039efa22506" region="maincpu" offset="18000"/>
              <rom name="317-0064.key" size="8192" crc="da326f36" sha1="0871b351379a094ac578e0eca5cb17797f9085aa" region="key" offset="0"/>
              <rom name="epr11667.126" size="32768" crc="110baba9" sha1="e14cf5af11ac9691eca897bbae7c238665cd2a4d" region="soundcpu" offset="0"/>
              <rom name="epr11664.4" size="32768" crc="1b1bc3d5" sha1="2a09e0dbe2d467c151dce705f249367df849eaeb" region="tiles" offset="0"/>
              <rom name="epr11665.5" size="32768" crc="3659174a" sha1="176d2436abb45827a8d387241082854f55dc0314" region="tiles" offset="8000"/>
              <rom name="epr11666.6" size="32768" crc="99dcc793" sha1="ad1d0acb60e7c1a7016955e142ebca1cf07b4908" region="tiles" offset="10000"/>
              <rom name="epr11658.87" size="32768" crc="3b5a20f7" sha1="03e0934b0913c3a2cadf1d28b8a700d70b80fbac" region="sprites" offset="0"/>
              <rom name="epr11657.86" size="32768" crc="010f81a9" sha1="1b7ee05c80edfa403e32c216fa69387ca556895e" region="sprites" offset="8000"/>
              <rom name="epr11660.89" size="32768" crc="e1e2e7c5" sha1="434039a70049a6e74e2a2f48b60345f720e6b1af" region="sprites" offset="10000"/>
              <rom name="epr11659.88" size="32768" crc="286c7286" sha1="449a19ea9a9f9df47005e8dac1b8eacaebc515e7" region="sprites" offset="18000"/>
              <rom name="pr11656.20" size="256" crc="640740eb" sha1="9a601a3665f612d00c70019d33c7abd3cca9434b" region="palette" offset="0"/>
              <rom name="pr11655.14" size="256" crc="a0c3fa77" sha1="cdffa1de06d30ec421323145dfc3271803fc25d4" region="palette" offset="100"/>
              <rom name="pr11654.8" size="256" crc="ba624305" sha1="eb1d0dde60f81ff510ac8c1212e0ed5703febaf3" region="palette" offset="200"/>
              <rom name="pr5317.28" size="256" crc="648350b8" sha1="c7986aa9127ef5b50b845434cb4e81dff9861cd2" region="proms" offset="0"/>
              <chip type="cpu" tag="maincpu" name="Z80" clock="20000000"/>
              <chip type="cpu" tag="soundcpu" name="Z80" clock="4000000"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="sn1" name="SN76489A" clock="2000000"/>
              <chip type="audio" tag="sn2" name="SN76489A" clock="4000000"/>
              <display tag="screen" type="raster" rotate="0" width="512" height="224" refresh="60.096154" pixclock="10000000" htotal="640" hbend="0" hbstart="512" vtotal="260" vbend="0" vbstart="224" />
              <sound channels="1"/>
              <input players="2" buttons="3" coins="2" service="yes">
                     <control type="joy" ways="8"/>
              <dipswitch name="Difficulty" tag="SWA" mask="3">
                     <dipvalue name="Easy" value="0"/>
                     <dipvalue name="Normal" value="1" default="yes"/>
                     <dipvalue name="Hard" value="2"/>
                     <dipvalue name="Hardest" value="3"/>
              <dipswitch name="Lives" tag="SWA" mask="12">
                     <dipvalue name="3" value="12" default="yes"/>
                     <dipvalue name="4" value="4"/>
                     <dipvalue name="5" value="0"/>
              <dipswitch name="Cabinet" tag="SWA" mask="16">
                     <dipvalue name="Upright" value="0" default="yes"/>
                     <dipvalue name="Cocktail" value="16"/>
              <dipswitch name="Allow Continue" tag="SWA" mask="32">
                     <dipvalue name="No" value="32"/>
                     <dipvalue name="Yes" value="0" default="yes"/>
              <dipswitch name="Unknown" tag="SWA" mask="64">
                     <dipvalue name="Off" value="64"/>
                     <dipvalue name="On" value="0" default="yes"/>
              <dipswitch name="Invulnerability" tag="SWA" mask="128">
                     <dipvalue name="Off" value="128" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Coin A" tag="SWB" mask="15">
                     <dipvalue name="4 Coins/1 Credit" value="7"/>
                     <dipvalue name="3 Coins/1 Credit" value="8"/>
                     <dipvalue name="2 Coins/1 Credit" value="9"/>
                     <dipvalue name="2 Coins/1 Credit 5/3 6/4" value="5"/>
                     <dipvalue name="2 Coins/1 Credit 4/3" value="4"/>
                     <dipvalue name="1 Coin/1 Credit" value="15" default="yes"/>
                     <dipvalue name="1 Coin/1 Credit 2/3" value="1"/>
                     <dipvalue name="1 Coin/1 Credit 4/5" value="2"/>
                     <dipvalue name="1 Coin/1 Credit 5/6" value="3"/>
                     <dipvalue name="2 Coins/3 Credits" value="6"/>
                     <dipvalue name="1 Coin/2 Credits" value="14"/>
                     <dipvalue name="1 Coin/3 Credits" value="13"/>
                     <dipvalue name="1 Coin/4 Credits" value="12"/>
                     <dipvalue name="1 Coin/5 Credits" value="11"/>
                     <dipvalue name="1 Coin/6 Credits" value="10"/>
              <dipswitch name="Coin B" tag="SWB" mask="240">
                     <dipvalue name="4 Coins/1 Credit" value="112"/>
                     <dipvalue name="3 Coins/1 Credit" value="128"/>
                     <dipvalue name="2 Coins/1 Credit" value="144"/>
                     <dipvalue name="2 Coins/1 Credit 5/3 6/4" value="80"/>
                     <dipvalue name="2 Coins/1 Credit 4/3" value="64"/>
                     <dipvalue name="1 Coin/1 Credit" value="240" default="yes"/>
                     <dipvalue name="1 Coin/1 Credit 2/3" value="16"/>
                     <dipvalue name="1 Coin/1 Credit 4/5" value="32"/>
                     <dipvalue name="1 Coin/1 Credit 5/6" value="48"/>
                     <dipvalue name="2 Coins/3 Credits" value="96"/>
                     <dipvalue name="1 Coin/2 Credits" value="224"/>
                     <dipvalue name="1 Coin/3 Credits" value="208"/>
                     <dipvalue name="1 Coin/4 Credits" value="192"/>
                     <dipvalue name="1 Coin/5 Credits" value="176"/>
                     <dipvalue name="1 Coin/6 Credits" value="160"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="supported" palettesize="2048"/>

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