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ixion: MAME ROM Information.


Ixion (c) 1983 Sega.

Collect all the letters to spell the word IXION. Shoot enemies and avoid being shot yourself.


Main CPU : Z80 (@ 3.04125 Mhz), I8035 (@ 400 Khz)

Sound Chips : Custom (@ 400 Khz)

Screen orientation : Vertical

Video resolution : 224 x 256 pixels

Screen refresh : 60.00 Hz

Palette colors : 256

Players : 2

Control : Dial

Buttons : 1


Released in January 1983.


* Consoles :

Atari 2600 (1984) : Unreleased prototype


Game's rom.

MAME Info:

0.37b15 [David Haywood]


- Use F2 to enter test mode, then 1 to advance from one test to the following.


- 0.146: Ixion doesn't have a 8255 [hap].

- 0.145u7: Aaron Giles fixed crash before OK in Ixion.

- 0.136u4: MASH fixed DIAL input (rotate cannon) in Ixion.

- 0.129u4: Changed Custom sound to 'Sega Universal Sound Board'.

- 0.122u6: Changed I8035 CPU2 clock speed to 6MHz.

- 0.107u2: Rewrote Zaxxon driver from the schematics. This is still a WIP (not finished yet) [Aaron Giles]: Connected universal sound board to Ixion and Razzmatazz. Changed clock speeds and video timing. Complete memory maps. Simplified video code and merged common cases together. Palette derived from resistor weights. Background positioning still a little off. Added I8035 (400000 Hz) CPU2 and Custom sound. Changed VSync to 59.999409.

- 0.76u1: Changed Z80 CPU clock speed to 3041250 Hz.

- 0.59: Removed 3rd coin slot. Added dipswitches 'Bonus Life', 'Lives', 'Difficulty', 'Demo Sounds' and 'Unused'.

- 0.37b15: David Haywood added Ixion (prototype) (Sega 1983).

- 15th May 2001: David Haywood added Ixion to the Zaxxon driver.


- Collect all letters to reach Kailo round. For Gold letter you gain 500 to 8000 points.

- Shoot enemies for 200 and crystals for 1000 points. KAILO heals tiles and OLIAK destroys tiles.

- Bonus ship every 100000

Recommended Games (Maze 3):


Solar Fox

Space Bugger

Space Dungeon

The Electric Yo-Yo


Ten Spot (Survivor)


Net Wars



Zeroize (DECO Cassette)




Speed Ball (prototype)


Power Surge

Romset: 109 kb / 19 files / 32.5 zip

MAME XML Output:

       <game name="ixion" sourcefile="zaxxon.c">
              <description>Ixion (prototype)</description>
              <rom name="1937d.u27" size="8192" crc="f447aac5" sha1="f6ec02f20482649ba1765254e0e67a8593075092" region="maincpu" offset="0"/>
              <rom name="1938b.u28" size="8192" crc="17f48640" sha1="d661e8ae0747c2c526360cb72e403deba7a98e71" region="maincpu" offset="2000"/>
              <rom name="1955b.u29" size="4096" crc="78636ec6" sha1="afca6418221e700749031cb3fa738907d77c1566" region="maincpu" offset="4000"/>
              <rom name="1944a.u51" size="2048" crc="88215098" sha1="54bd1c71e7f10f20623e47f4e791f54ce698bc08" region="usbcpu" offset="0"/>
              <rom name="1943a.u50" size="2048" crc="77e5a1f0" sha1="00152ffb59ebac718b300fdf24314b456748ffbe" region="usbcpu" offset="800"/>
              <rom name="1939a.u68" size="2048" crc="c717ddc7" sha1="86fdef368f097a27aac6e05bf3208fcdaf7d9da7" region="gfx_tx" offset="0"/>
              <rom name="1940a.u69" size="2048" crc="ec4bb3ad" sha1="8a38bc48cda59b5e76a5153d459bb2d01d6a56f3" region="gfx_tx" offset="800"/>
              <rom name="1952a.u113" size="8192" crc="ffb9b03d" sha1="b7a900166a880ca4a71fec6ad02f5c0ecfc92df8" region="gfx_bg" offset="0"/>
              <rom name="1951a.u112" size="8192" crc="db743f1b" sha1="a5d13d597fe999757137d96fb4bf7c7efc7a3245" region="gfx_bg" offset="2000"/>
              <rom name="1950a.u111" size="8192" crc="c2de178a" sha1="0347a751accb02576b9cd8b123b79018cc05268c" region="gfx_bg" offset="4000"/>
              <rom name="1945a.u77" size="8192" crc="3a3fbfe7" sha1="f3a503f476524f9de5b55de49009972124e58601" region="gfx_spr" offset="0"/>
              <rom name="1946a.u78" size="8192" crc="f2cb1b53" sha1="8c2fb58ce7de7876c4d2f1a3d13c6a5efd06d354" region="gfx_spr" offset="2000"/>
              <rom name="1947a.u79" size="8192" crc="d2421e92" sha1="07000055ace2c6983c7add180904d6bc20e1bb3b" region="gfx_spr" offset="4000"/>
              <rom name="1948a.u91" size="8192" crc="7a7fcbbe" sha1="76dffffcadbe446091ee98958873aa76f7b17213" region="tilemap_dat" offset="0"/>
              <rom name="1953a.u90" size="8192" crc="6b626ea7" sha1="7e02da0b031a42b077c173d85f15f75242e61e98" region="tilemap_dat" offset="2000"/>
              <rom name="1949a.u93" size="8192" crc="e7722d09" sha1="c9a0fb4fac798454facd3d5dd02d2c05cfe8e3a6" region="tilemap_dat" offset="4000"/>
              <rom name="1954a.u92" size="8192" crc="a970f5ff" sha1="0f1f8f329ceefcbd0725f8eeff1b01348f5c9374" region="tilemap_dat" offset="6000"/>
              <rom name="1942a.u98" size="256" crc="3a8e6f74" sha1="c2d480f8c8a111c1e23cbf819dea807f8128208d" region="proms" offset="0"/>
              <rom name="1941a.u72" size="256" crc="a5d0d97e" sha1="2677508b44f9b7a6c6ee56e49a7b88073e80debe" region="proms" offset="100"/>
              <chip type="cpu" tag="maincpu" name="Z80" clock="3041250"/>
              <chip type="cpu" tag="usbcpu" name="I8035" clock="6000000"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="usbsnd" name="Sega Universal Sound Board"/>
              <display tag="screen" type="raster" rotate="270" width="256" height="224" refresh="59.999408" pixclock="6082500" htotal="384" hbend="0" hbstart="256" vtotal="264" vbend="16" vbstart="240" />
              <sound channels="1"/>
              <input players="1" buttons="1" coins="2" service="yes">
                     <control type="joy" ways="8"/>
                     <control type="dial" minimum="0" maximum="255" sensitivity="30" keydelta="15"/>
              <dipswitch name="Bonus Life" tag="DSW02" mask="3">
                     <dipvalue name="40000" value="0" default="yes"/>
                     <dipvalue name="60000" value="1"/>
                     <dipvalue name="80000" value="2"/>
                     <dipvalue name="100000" value="3"/>
              <dipswitch name="Lives" tag="DSW02" mask="12">
                     <dipvalue name="2" value="0"/>
                     <dipvalue name="3" value="4" default="yes"/>
                     <dipvalue name="4" value="8"/>
                     <dipvalue name="5" value="12"/>
              <dipswitch name="Difficulty" tag="DSW02" mask="112">
                     <dipvalue name="Easiest" value="0"/>
                     <dipvalue name="Easier" value="16"/>
                     <dipvalue name="Easy" value="32"/>
                     <dipvalue name="Normal" value="48" default="yes"/>
                     <dipvalue name="Medium" value="64"/>
                     <dipvalue name="Hard" value="80"/>
                     <dipvalue name="Harder" value="96"/>
                     <dipvalue name="Hardest" value="112"/>
              <dipswitch name="Demo Sounds" tag="DSW02" mask="128">
                     <dipvalue name="Off" value="0"/>
                     <dipvalue name="On" value="128" default="yes"/>
              <dipswitch name="Coin B" tag="DSW03" mask="7">
                     <dipvalue name="4 Coins/1 Credit" value="0"/>
                     <dipvalue name="3 Coins/1 Credit" value="1"/>
                     <dipvalue name="2 Coins/1 Credit" value="2"/>
                     <dipvalue name="1 Coin/1 Credit" value="3" default="yes"/>
                     <dipvalue name="1 Coin/2 Credits" value="4"/>
                     <dipvalue name="1 Coin/3 Credits" value="5"/>
                     <dipvalue name="1 Coin/4 Credits" value="6"/>
                     <dipvalue name="1 Coin/5 Credits" value="7"/>
              <dipswitch name="Coin A" tag="DSW03" mask="56">
                     <dipvalue name="4 Coins/1 Credit" value="0"/>
                     <dipvalue name="3 Coins/1 Credit" value="8"/>
                     <dipvalue name="2 Coins/1 Credit" value="16"/>
                     <dipvalue name="1 Coin/1 Credit" value="24" default="yes"/>
                     <dipvalue name="1 Coin/2 Credits" value="32"/>
                     <dipvalue name="1 Coin/3 Credits" value="40"/>
                     <dipvalue name="1 Coin/4 Credits" value="48"/>
                     <dipvalue name="1 Coin/5 Credits" value="56"/>
              <dipswitch name="Free Play" tag="DSW03" mask="128">
                     <dipvalue name="Off" value="0" default="yes"/>
                     <dipvalue name="On" value="128"/>
              <driver status="imperfect" emulation="good" color="good" sound="imperfect" graphic="good" savestate="supported" palettesize="256"/>

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