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strfbomb: MAME ROM Information.


Strafe Bomb (c) 1981 Omni.


Main CPU : Z80 (@ 3.072 Mhz)

Sound CPU : Z80 (@ 1.78975 Mhz)

Sound Chips : (2x) AY8910 (@ 1.78975 Mhz)

Screen orientation : Vertical

Video resolution : 224 x 256 pixels

Screen refresh : 60.61 Hz

Palette Colors : 99

Players : 2

Control : 8-way joystick

Buttons : 2


This game is a bootleg of "Scramble".


Game's rom.

MAME Info:

0.35b8 [Zsolt Vasvari]

0.06 [Nicola Salmoria]

Artwork available


- 0.141u1: Roberto Fresca, Team Europe and Hal9k added clone Scramble (bootleg?).

- 20th January 2011: Roberto Fresca - Team Europe and Hal9K dumped a new clone of Scramble. Seems to be bootleg, but not 100% sure, since they have only the eproms. Not the PCB. Here some snaps.

- 0.138u1: Changed description of clone 'Scramble (Stern)' to 'Scramble (Stern Electronics)'.

- 0.136u3: Stephane Humbert fixed dipswitches and inputs (after verification of the Z80 code) for clones Scramble (bootleg on Galaxian hardware) and Scramble (bootleg). Changed description of clone 'Scramble (Galaxian hardware)' to 'Scramble (bootleg on Galaxian hardware)'.

- 0.135: Joachim Bassmann added clone Scramble (Karateko, French bootleg).

- 25th October 2009: Smitdogg - Joachim Bassmann dumped a French bootleg of Scramble. I attached a bunch of pics of it running.

- 0.133u5: Couriersud fixed missing sound in clone Explorer.

- 0.133u1: Renamed (scrambls) to (scrambles).

- 0.129u6: Scramble now is a lot closer to reports and recordings (background sound, sound of bullets) [Couriersud].

- 0.124u1: Replaced 4x RC Filter sound with Discrete. Changed visible area to 224x768 and palettesize to 32 colors.

- 0.122u7: RansAckeR verified DIP locations from manuals for Scramble.

- 0.122u5: Couriersud fixed flipped tilemap offset for Scramble and clones (playable cocktail mode).

- 0.119u1: David Haywood added clone Scramble (bootleg).

- 0.116u1: Mark McDougall updated the protection implementation in Scramble (Stern) to use equations based on the implementation from fpgaarcade.com.

- 0.100u4: Hans Andersson added filters back into the Scramble driver. Added 6x RC Filter to Scramble and Scramble (Stern).

- 0.96u3: Pierpaolo Prazzoli improved sound in clone Explorer.

- 11th April 2005: f205v dumped Scramble (bootleg).

- 0.88u5: Thierry Lescot fixed rom filenames in Scramble.

- 0.78u5: Pierpaolo Prazzoli added clone Strafe Bomb (Omni 1981).

- 0.74: Pierpaolo Prazzoli added clone Explorer (bootleg 1981). TODO: Check these 3 bootlegs are worth supporting, if not remove them.

- 8th September 2003: Pierpaolo Prazzoli re-added Explorer (a Scramble bootleg) with sound.

- 26th April 2003: smf added a bootleg Scramble called Explorer to the Scramble driver, though sound does not work yet in it.

- 0.63: Changed description of clone 'Scramble (bootleg on Galaxian hardware)' to 'Scramble (Galaxian hardware)'.

- 0.53: Changed palettesize to 99 colors.

- 1st June 2001: Zsolt Vasvari fixed the Galaxian / Scramble starfield graphics emulation.

- 31st May 1999: Zsolt Vasvari made the Galaxian/Scramble hardware games multi-session friendly.

- 0.35b8: Changed clone 'Scramble (Konami)' to parent 'Scramble'. Renamed (scramble) to (scrambls) and (scramblk) to (scramble).

- 0.35b7: Changed description of clone 'Scramble (bootleg)' to '(bootleg on Galaxian hardware)'.

- 0.35b6: Zsolt Vasvari added clones Scramble (Konami) and Scramble (bootleg). Changed parent description to 'Scramble (Stern)'.

- 10th March 1999: Zsolt Vasvari added two clones Scramble (a Konami version and a bootleg).

- 0.34b1: Added color prom.

- 0.30: Appropriate blue background in Scramble, Super Cobra and other games running on the same hardware [Mike Coates]. Frank Palazzolo fixed music tempo in Scramble.

- 0.28: Merged mooncrst, moonqsr and scramble vidhrdw into the new Galaxian driver [Nicola Salmoria]. Mike Balfour added high score saving to Scramble.

- 0.15: Sound support in Scramble [Nicola Salmoria]. I discovered that the garbled sound I experienced in Scramble was caused by a bad ROM. Therefore, if sound doesn't work, check your ROM set. Note that I also changed one ROM name from "2c" to "2d". All these require -frameskip 1 on my 486/100. I have no idea how accurate the tempo and pitch is. If you can compare it with a real machine, please let me know what's wrong.

- 0.12: Set up the second CPU to emulate sound in Scramble [Nicola Salmoria], but the sound that comes out is completely wrong. I don't know what I'm missing, anyone can help? The background stars in Scramble / Super Cobra now blink. However I don't know how close to the real thing it is. Known issues: The star background is probably not entirely accurate. Also, maybe it should be clipped at the top and bottom of the screen? Added audiocpu roms 5c, 5d and 5e ($0, 800, 1000).

- 0.07: Scramble has 100% correct colors. The same palette is used by Super Cobra, but it doesn't look right [Nicola Salmoria].

- 0.06: Nicola Salmoria added Scramble (Stern 1981). Game is playable with wrong colors and no sound. Control: Arrows = Move around CTRL = Fire and ALT = Bomb. The video hardware is very similar to Galaxians, main differences being that bullets are not vertical lines and the star background doesn't scroll. Known issues: The background stars don't blink. Maybe it should also be clipped to the top and bottom of the screen? Two players mode doesn't work.


Other Emulators:

* CottAGE

* FB Alpha

* GalEMU

* HiVE


* Retrocade

* Sparcade

* Tickle


Recommended Games (Defender):





Cosmic Avenger


The Percussor


4 Fun in 1 (Scramble)

Space Odyssey



A. D. 2083





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Darius Gaiden - Silver Hawk

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Fantasy Zone (Mega-Tech)

Fantasy Zone 2

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Thunder Cross

Thunder Cross II


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Air Buster

Arrow Flash (Mega-Tech)

Bio-ship Paladin


ThunderForce AC

Thunder Force II MD (Mega-Tech)

Cosmic Cop

E.D.F. : Earth Defense Force

Metal Black

Strike Force


Andro Dunos

Last Resort


Blazing Star

Romset: 27 kb / 14 files / 15.0 zip

MAME XML Output:

       <game name="strfbomb" sourcefile="galdrvr.c" cloneof="scramble" romof="scramble">
              <description>Strafe Bomb</description>
              <manufacturer>bootleg? (Omni)</manufacturer>
              <rom name="1.2c" size="2048" crc="b102aaa0" sha1="00560da7a2ded6afcdc1d46e12cc3c795654639a" region="maincpu" offset="0"/>
              <rom name="2.2e" size="2048" crc="d4155703" sha1="defd37df55536890456c29812340e0d6b4292b78" region="maincpu" offset="800"/>
              <rom name="3.2f" size="2048" crc="a9568c89" sha1="0d8e6b3af92e4933814700d54acfd43407f3ede1" region="maincpu" offset="1000"/>
              <rom name="4.2h" size="2048" crc="663b6c35" sha1="354fb2e92f4376b20aee412ed361d59b8a2c01e1" region="maincpu" offset="1800"/>
              <rom name="5.2j" merge="s5.2j" size="2048" crc="4919a91c" sha1="9cb5861c61e4783e5fbaa3869d51195f127b1129" region="maincpu" offset="2000"/>
              <rom name="6.2l" size="2048" crc="4ec66ae3" sha1="a74827e161212e9b2eddd980321507a377f1e30b" region="maincpu" offset="2800"/>
              <rom name="7.2m" size="2048" crc="0feb0192" sha1="45a44bde3bf1483abf95fe1d1d5066bfcb1736df" region="maincpu" offset="3000"/>
              <rom name="8.2p" size="2048" crc="280a6142" sha1="f17625b91eaaffa36a433be32e4e80651d94b3b9" region="maincpu" offset="3800"/>
              <rom name="ot1.5c" merge="ot1.5c" size="2048" crc="bcd297f0" sha1="8ed78487d76fd0a917ab7b258937a46e2cd9800c" region="audiocpu" offset="0"/>
              <rom name="ot2.5d" merge="ot2.5d" size="2048" crc="de7912da" sha1="8558b4eff5d7e63029b325edef9914feda5834c3" region="audiocpu" offset="800"/>
              <rom name="ot3.5e" merge="ot3.5e" size="2048" crc="ba2fa933" sha1="1f976d8595706730e29f93027e7ab4620075c078" region="audiocpu" offset="1000"/>
              <rom name="9.5f" size="2048" crc="3abeff25" sha1="ff6de0596c849ec877fb759c1ab9c7a8ffe2edac" region="gfx1" offset="0"/>
              <rom name="10.5h" size="2048" crc="79ecacbe" sha1="285cb3ee0ff8d596877bb571ea8479566ab36eb9" region="gfx1" offset="800"/>
              <rom name="c01s.6e" merge="c01s.6e" size="32" crc="4e3caeab" sha1="a25083c3e36d28afdefe4af6e6d4f3155e303625" region="proms" offset="0"/>
              <chip type="cpu" tag="maincpu" name="Z80" clock="3072000"/>
              <chip type="cpu" tag="audiocpu" name="Z80" clock="1789750"/>
              <chip type="audio" tag="mono" name="Speaker"/>
              <chip type="audio" tag="8910.0" name="AY-3-8910A" clock="1789750"/>
              <chip type="audio" tag="8910.1" name="AY-3-8910A" clock="1789750"/>
              <chip type="audio" tag="konami" name="DISCRETE"/>
              <display tag="screen" type="raster" rotate="90" width="768" height="224" refresh="60.606061" pixclock="18432000" htotal="1152" hbend="0" hbstart="768" vtotal="264" vbend="16" vbstart="240" />
              <sound channels="1"/>
              <input players="2" buttons="2" coins="2">
                     <control type="joy" ways="8"/>
              <dipswitch name="Lives" tag="IN1" mask="3">
                     <dipvalue name="3" value="0" default="yes"/>
                     <dipvalue name="4" value="1"/>
                     <dipvalue name="5" value="2"/>
                     <dipvalue name="255 (Cheat)" value="3"/>
              <dipswitch name="Coinage" tag="IN2" mask="6">
                     <dipvalue name="A 1/2 B 4/1 C 1/2" value="0" default="yes"/>
                     <dipvalue name="A 1/3 B 2/1 C 1/3" value="2"/>
                     <dipvalue name="A 1/4 B 3/1 C 1/4" value="4"/>
                     <dipvalue name="A 1/5 B 1/1 C 1/5" value="6"/>
              <dipswitch name="Cabinet" tag="IN2" mask="8">
                     <dipvalue name="Upright" value="0" default="yes"/>
                     <dipvalue name="Cocktail" value="8"/>
              <driver status="good" emulation="good" color="good" sound="good" graphic="good" savestate="supported" palettesize="32"/>

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