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skyfox: MAME ROM Information.


Sky Fox (c) 1987 Jaleco.

A vertically scrolling shoot'em up.


Main CPU : Z80 (@ 4 Mhz)

Sound CPU : Z80 (@ 1.748 Mhz)

Sound Chips : (2x) YM2203 (@ 1.748 Mhz)

Players : 2

Control : 8-way joystick

Buttons : 2


Released in April 1987.

Licensed to Nichibutsu.

This game is known in Japan as "Exerizer".


Game's rom.

Machine's picture.

MAME Info:

0.37b6 [Luca Elia]


- Player 2's controls are player 1's control in Cocktail mode/Flip screen. Karasu (ID 00090)

- exerizrb, skyfox: Recently I have played an Exerizer bootleg PCB and I have noticed there is a parallax effect missing in MAME. Kold666 (ID 00232)


- 0.139: Corrado Tomaselli corrected clocks and Vsync for the Sky Fox & Exerizer sets based on actual OSCs and measurements taken from a real PCB. Changed Z80 CPU1 and the 2x YM2203 clock speeds to 1789772 Hz and VSync to 62.65 Hz.

- 0.138u3: N. Francfort, blib, Smitdogg and The Dumping Union added clone Exerizer (Japan). Renamed (exerizrb) to (exerizerb).

- 30th April 2010: Smitdogg - We got the original Jaleco Exerizer. The version in MAME is from a bootleg.

- 0.136u4: Fabio Priuli added driver data struct and save states to Sky Fox.

- 0.131u1: Angelo Salese cleaned-up the NMIs on coin insertions and merged memory maps in Sky Fox.

- 0.126u3: Fabio Priuli fixed issue with credits input in Sky Fox / Exerizer.

- 0.125u7: Couriersud fixed Coin 1 mapped twice in Sky Fox.

- 0.72: Added 'Difficulty' dipswitch.

- 0.37b6: Luca Elia added Sky Fox (Jaleco 1987 (Nichibutsu USA License)) and clone Exerizer (Japan) (bootleg). The background rendering is entirely guesswork.

- 8th June 2000: Luca Elia sent in a driver for Sky Fox / Exerizer.

LEVELS: 20 (endless)

Other Emulators:

* FB Alpha

Recommended Games (Space Shooter 2):

Devil Zone

Killer Comet



Radar Scope

Space Firebird

Zero Hour

Astro Blaster

Astro Fantasia (DECO Cassette)

Black Hole


Laser Battle

Red Clash

Satan of Saturn

Space Cruiser


Azurian Attack

Battle Cross


Sky Base

Space Raider



Juno First

Mad Planets


Halley's Comet

Sky Fox

Star Fighter

Space Bomber

Romset: 513 kb / 13 files / 122.2 zip

MAME XML Output:

       <game name="skyfox" sourcefile="skyfox.c">
              <description>Sky Fox</description>
              <manufacturer>Jaleco (Nichibutsu USA license)</manufacturer>
              <rom name="skyfox1.bin" size="32768" crc="b4d4bb6f" sha1="ed1cf6d91ca7170cb7d1c80b586c11164430fd49" region="maincpu" offset="0"/>
              <rom name="skyfox2.bin" size="32768" crc="e15e0263" sha1="005934327834aed46b17161aef82117ee508e9c4" region="maincpu" offset="8000"/>
              <rom name="skyfox9.bin" size="32768" crc="0b283bf5" sha1="5b14d0beea689ee7e9174017e5a127435df4fbe3" region="audiocpu" offset="0"/>
              <rom name="skyfox3.bin" size="65536" crc="3a17a929" sha1="973fb36af416161e04a83d7869819d9b13df18cd" region="gfx1" offset="0"/>
              <rom name="skyfox4.bin" size="65536" crc="358053bb" sha1="589e3270eda0d44e73fbc7ac06e782f332920b39" region="gfx1" offset="10000"/>
              <rom name="skyfox5.bin" size="65536" crc="c1215a6e" sha1="5ca30be8a68ac6a00907cc9e47ede0acec980f46" region="gfx1" offset="20000"/>
              <rom name="skyfox6.bin" size="65536" crc="cc37e15d" sha1="80806df6185f7b8c2d3ab98420ca514df3e63c8d" region="gfx1" offset="30000"/>
              <rom name="skyfox7.bin" size="65536" crc="fa2ab5b4" sha1="c0878b25dae28f7d49e14376ff885d1d4e3d5dfe" region="gfx1" offset="40000"/>
              <rom name="skyfox8.bin" size="65536" crc="0e3edc49" sha1="3d1c59ecaabe1c9517203b7e814db41d5cff0cd4" region="gfx1" offset="50000"/>
              <rom name="skyfox10.bin" size="32768" crc="19f58f9c" sha1="6887216243b47152129448cbb4c7d52309feed03" region="gfx2" offset="0"/>
              <rom name="sfoxrprm.bin" size="256" crc="79913c7f" sha1="e64e6a3eb55f37984cb2597c8ffba6bc3bad49c7" region="proms" offset="0"/>
              <rom name="sfoxgprm.bin" size="256" crc="fb73d434" sha1="4a9bd61fbdce9441753c5921f95ead5c4655957e" region="proms" offset="100"/>
              <rom name="sfoxbprm.bin" size="256" crc="60d2ab41" sha1="e58a54f2aaee5c07136d5437e513d61fb18fbd9f" region="proms" offset="200"/>
              <chip type="cpu" tag="maincpu" name="Z80" clock="4000000"/>
              <chip type="cpu" tag="audiocpu" name="Z80" clock="1789772"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="ym1" name="YM2203" clock="1789772"/>
              <chip type="audio" tag="ym2" name="YM2203" clock="1789772"/>
              <display tag="screen" type="raster" rotate="90" width="320" height="224" refresh="62.650000" />
              <sound channels="1"/>
              <input players="1" buttons="2" coins="2">
                     <control type="joy" ways="8"/>
              <dipswitch name="Unknown 1-0" tag="DSW0" mask="1">
                     <dipvalue name="Off" value="1" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Unknown 1-1" tag="DSW0" mask="2">
                     <dipvalue name="Off" value="2" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Unknown 1-2" tag="DSW0" mask="4">
                     <dipvalue name="Off" value="4" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Bonus Life" tag="DSW0" mask="24">
                     <dipvalue name="20K" value="0"/>
                     <dipvalue name="30K" value="8" default="yes"/>
                     <dipvalue name="40K" value="16"/>
                     <dipvalue name="50K" value="24"/>
              <dipswitch name="Difficulty" tag="DSW0" mask="32">
                     <dipvalue name="Medium" value="32"/>
                     <dipvalue name="Hard" value="0" default="yes"/>
              <dipswitch name="Flip Screen" tag="DSW0" mask="64">
                     <dipvalue name="Off" value="64" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Cabinet" tag="DSW0" mask="128">
                     <dipvalue name="Upright" value="0" default="yes"/>
                     <dipvalue name="Cocktail" value="128"/>
              <dipswitch name="Coinage" tag="DSW1" mask="14">
                     <dipvalue name="5 Coins/1 Credit" value="14"/>
                     <dipvalue name="4 Coins/1 Credit" value="10"/>
                     <dipvalue name="3 Coins/1 Credit" value="6"/>
                     <dipvalue name="2 Coins/1 Credit" value="2"/>
                     <dipvalue name="1 Coin/1 Credit" value="0" default="yes"/>
                     <dipvalue name="1 Coin/2 Credits" value="4"/>
                     <dipvalue name="1 Coin/3 Credits" value="8"/>
                     <dipvalue name="1 Coin/4 Credits" value="12"/>
              <dipswitch name="Lives" tag="DSW2" mask="7">
                     <dipvalue name="1" value="0"/>
                     <dipvalue name="2" value="1"/>
                     <dipvalue name="3" value="2" default="yes"/>
                     <dipvalue name="4" value="3"/>
                     <dipvalue name="5" value="4"/>
                     <dipvalue name="Infinite (Cheat)" value="7"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="supported" palettesize="512"/>

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