game
icon
title Strafe Bomb
set name strfbomb
manufacturer Omni
year 1981
genre Shooter (hof)
category Shooter / Flying Horizontal (hof)
driver status good
driver source galdrvr.c
snapshots MW: in game | parent / CT: in game | title | parent / Mr. Do: parent / PS: in game | title | parent
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rating

70.7% after 28 votes
 
parent Scramble
other clones Explorer
Scramble (bootleg)
Scramble (Galaxian hardware)
Scramble (Stern)
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display
colour emulation good
palette 32
display type raster
orientation vertical
resolution 224x768
frequency 60.606061Hz
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sound
sound emulation good
channels mono
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controls
players 2
nplayers 2P alt
controls 8 way joystick
buttons 2
coin slots 2
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hardware
cpu Z80 @ 3.072MHz
cpu Z80 @ 1.78975MHz
audio AY-3-8910A @ 1.78975MHz
audio AY-3-8910A @ 1.78975MHz
audio Discrete
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data
version added .078u5
last change(s) .079
roms
name size crc set flags sha1
1.2c  2048  b102aaa0  strfbomb    00560da7a2ded6afcdc1d46e12cc3c795654639a 
2.2e  2048  d4155703  strfbomb    defd37df55536890456c29812340e0d6b4292b78 
3.2f  2048  a9568c89  strfbomb    0d8e6b3af92e4933814700d54acfd43407f3ede1 
4.2h  2048  663b6c35  strfbomb    354fb2e92f4376b20aee412ed361d59b8a2c01e1 
5.2j  2048  4919a91c  scramble    9cb5861c61e4783e5fbaa3869d51195f127b1129 
6.2l  2048  4ec66ae3  strfbomb    a74827e161212e9b2eddd980321507a377f1e30b 
7.2m  2048  0feb0192  strfbomb    45a44bde3bf1483abf95fe1d1d5066bfcb1736df 
8.2p  2048  280a6142  strfbomb    f17625b91eaaffa36a433be32e4e80651d94b3b9 
ot1.5c  2048  bcd297f0  scramble    8ed78487d76fd0a917ab7b258937a46e2cd9800c 
ot2.5d  2048  de7912da  scramble    8558b4eff5d7e63029b325edef9914feda5834c3 
ot3.5e  2048  ba2fa933  scramble    1f976d8595706730e29f93027e7ab4620075c078 
9.5f  2048  3abeff25  strfbomb    ff6de0596c849ec877fb759c1ab9c7a8ffe2edac 
10.5h  2048  79ecacbe  strfbomb    285cb3ee0ff8d596877bb571ea8479566ab36eb9 
c01s.6e  32  4e3caeab  scramble    a25083c3e36d28afdefe4af6e6d4f3155e303625 
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cabinet art
cabinet scramble.png
marquee scramble.png
control panel scramble.png
flyer scramble.png
PCB scramble.png
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additional information
info 0.35b8 [Zsolt Vasvari]

0.06 [Nicola Salmoria]

Bugs:
  • Side-by-side test (see report). Gary Walton (ID 01028)
WIP:
  • 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.
  • 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.
  • 0.53: 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: Renamed (scramble) to (scrambls) and (scramblk) to (scramble).
  • 0.35b6: Zsolt Vasvari added clones Scramble (Konami) and Scramble (bootleg).
  • 10th March 1999: Zsolt Vasvari added two clones Scramble (a Konami version and a bootleg).
  • 0.30: Mike Coates appropriate blue background in Scramble, Super Cobra and other games running on the same hardware. Frank Palazzolo fixed music tempo in Scramble.
  • 0.28: Merged mooncrst, moonqsr and scramble vidhrdw into the new Galaxian driver. Mike Balfour added hiscore save in Scramble.
  • 0.15: Sound support in Scramble. Nicola discovered that the garbled sound he experienced in Scramble was caused by a bad ROM. Therefore, if sound doesn't work, check your ROMset. Note that one ROM name changed from '2c' to '2d'.
  • 0.12: Set up the second CPU to emulate sound in Scramble, but the sound that comes out is completely wrong. The background stars in Scramble and Super Cobra now blink. However Nicola don't know how close to the real thing it is.
  • 0.07: Scramble has 100% correct colors. The same palette is used by Super Cobra, but it doesn't look right.
  • 0.06: Nicola Salmoria added Scramble (Stern 1981) (wrong colors, no sound). 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. The video hardware is very similar to Galaxians, main differences being that bullets are not vertical lines and the star background doesn't scroll.
LEVELS: 5

Other Emulators:
  • CottAGE
  • GalEMU
  • HiVE
  • JAE
  • Retrocade
  • Sparcade
  • Tickle
  • VAntAGE
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Romset: 27 kb / 14 files / 15.1 zip
history Strafe Bomb (c) 1981 Omni.


- TECHNICAL -


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


- TRIVIA -


This game is a bootleg of "Scramble".


- SOURCES -


Game's rom.



Edit this entry at Arcade-History.com: http://www.arcade-history.com/?n=strafe-bomb&page=detail&id=2640&o=2
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cheats
cheats
code comments
00000000:4002:00000063:FFFFFFFF  Infinite Credits
00000000:4108:00000005:FFFFFFFF  Infinite Lives
00000000:4105:000000FF:FFFFFFFF  Infinite Fuel
20800000:207E:000000C9:FFFFFFFF  Invincibility
20810000:214A:000000C9:FFFFFFFF  Invincibility (2/2)
00000301:411E:00000005:FFFFFFFF  Select current level:Level 6 = Base
00000303:411E:00000005:FFFFFFFF  Select next level:Level 6 = Base
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