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twinsqua: MAME ROM Information.


Twin Squash (c) 1991 Sega.


Sega System C2 hardware

Main CPU : 68000 (@ 8.948862 Mhz)

Sound Chips : YM3438 (@ 7.670453 Mhz), SN76496 (@ 3.579545 Mhz), UPD7759 (@ 640 Khz)

Screen orientation : Horizontal

Video resolution : 320 x 224 pixels

Screen refresh : 60.00 Hz

Palette colors : 2048

Players : 2

Control : dial

Buttons : 1


Game's rom.

MAME Info:

0.88u4 [David Haywood]


- 0.100u2: Aaron Giles updates the Sega C2 driver and got Twin Squash working. Replaced 8-way Joystick with Dial and 1 button. Added dipswitches 'Buy In', 'Seat Type' and 2x 'Unknown'.

- 0.88u4: David Haywood added Twin Squash (Sega 1991). Protection issues.

- 9th November 2004: David Haywood - It's amazing what turns up when you least expect it... the BDT pulled some roms for Sega's Twin Squash out of their hats, it runs on C2 hardware but appears to have a few issues with protection at the moment. I'm unlikely to be able to deal with the protection issues myself, but hopefully somebody else can.


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Romset: 640 kb / 3 files / 369.3 zip

MAME XML Output:

       <game name="twinsqua" sourcefile="segac2.c">
              <description>Twin Squash</description>
              <rom name="epr-14657.ic32" size="262144" crc="becbb1a1" sha1="787b1a4bf420186d05b5448582f6492e40d394fa" region="maincpu" offset="0"/>
              <rom name="epr-14656.ic31" size="262144" crc="411906e7" sha1="68a4e66b9e18499d77cdb584470f35f67edec6fd" region="maincpu" offset="1"/>
              <rom name="epr-14588.ic4" size="131072" crc="5a9b6881" sha1="d86ec7f569fae5a1ce93a1cf40998cbb13726e0c" region="upd" offset="0"/>
              <chip type="cpu" tag="maincpu" name="68000" clock="8948862"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="ymsnd" name="YM3438" clock="7670453"/>
              <chip type="audio" tag="snsnd" name="SN76496" clock="3579545"/>
              <chip type="audio" tag="upd" name="UPD7759" clock="640000"/>
              <display tag="megadriv" type="raster" rotate="0" width="256" height="224" refresh="60.000000" />
              <sound channels="1"/>
              <input players="2" buttons="1" coins="2" service="yes">
                     <control type="dial" minimum="0" maximum="255" sensitivity="30" keydelta="15"/>
              <dipswitch name="Coin A" tag="COINAGE" 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, 5/6" value="3"/>
                     <dipvalue name="1 Coin/1 Credit, 4/5" value="2"/>
                     <dipvalue name="1 Coin/1 Credit, 2/3" value="1"/>
                     <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"/>
                     <dipvalue name="Free Play (if Coin B too) or 1/1" value="0"/>
              <dipswitch name="Coin B" tag="COINAGE" 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, 5/6" value="48"/>
                     <dipvalue name="1 Coin/1 Credit, 4/5" value="32"/>
                     <dipvalue name="1 Coin/1 Credit, 2/3" value="16"/>
                     <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"/>
                     <dipvalue name="Free Play (if Coin A too) or 1/1" value="0"/>
              <dipswitch name="Credits to Start" tag="DSW" mask="1">
                     <dipvalue name="1" value="1" default="yes"/>
                     <dipvalue name="2" value="0"/>
              <dipswitch name="Demo Sounds" tag="DSW" mask="2">
                     <dipvalue name="Off" value="2"/>
                     <dipvalue name="On" value="0" default="yes"/>
              <dipswitch name="Buy In" tag="DSW" mask="4">
                     <dipvalue name="Off" value="4" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Difficulty" tag="DSW" mask="24">
                     <dipvalue name="Easy" value="16"/>
                     <dipvalue name="Medium" value="24" default="yes"/>
                     <dipvalue name="Hard" value="8"/>
                     <dipvalue name="Hardest" value="0"/>
              <dipswitch name="Seat Type" tag="DSW" mask="32">
                     <dipvalue name="Normal" value="32" default="yes"/>
                     <dipvalue name="Moving" value="0"/>
              <dipswitch name="Unused" tag="DSW" mask="64">
                     <dipvalue name="Off" value="64" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Unused" tag="DSW" mask="128">
                     <dipvalue name="Off" value="128" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="unsupported" palettesize="2048"/>

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