colour emulation good
palette 256
display type raster
orientation horizontal
resolution 256x240
frequency 60.000000Hz
sound emulation imperfect
channels mono
players 2
nplayers ???
controls joy
buttons 1
coin slots 2
cpu M6809 @ 2MHz
cpu M6809 @ 2MHz
cpu M6502 @ 1.5MHz
audio Speaker
audio AY-3-8910A @ 1.5MHz
audio AY-3-8910A @ 1.5MHz
version added .080u2
last change(s) none
name size crc set flags sha1
ct01-s.4c  32768  b35a16cb  zerotrgt    49581324c3e3d5219f0512d08a40161185368b10 
ct08.16a  16384  7e8db408  zerotrgta    2ae407d15645753a2a0d691c9f1cf1eb383d3e8a 
cty07.14a  16384  119b6211  zerotrgta    2042f06387d34fad6b63bcb8ac6f9b06377f634d 
ct06.13a  16384  bce5adad  zerotrgta    86c4eef0d68679a24bab6460b49640a498f32ecd 
ct00.1c  8192  ae091b6c  zerotrgt    8b3a1c0acbfa56f05bcf65677f85d70c8c9640d6 
ct05.16h  16384  e7a24404  zerotrgt    a8a33118d4f09b77cfd7e6e9f486b250078b21bc 
ct02.14c  32768  d2a0bb72  zerotrgt    ee060f8db0b1fa1ba1034bf94cf44ff6820660bd 
ct03.15c  32768  79f2be20  zerotrgt    62cf55d9163d522b7cb0e760f0d5662c529a22e9 
ct04.17c  32768  1037cce8  zerotrgt    11e49e29f9b60fbf36a301a566f233eb6150d519 
ct09.4j  16384  8c859d41  zerotrgt    8095e83de81d2c9f270a303322ddf84568e3d37a 
ct11.7j  16384  5da2d9d8  zerotrgt    d2cfdbf892bce3667545568998aa03bfd03155c5 
ct13.10j  16384  b004cedd  zerotrgt    2a503ea14c66805b37f25096ecfec19a07cdc387 
ct15.13j  16384  4473fe66  zerotrgt    0accbcb801f58df410af305a87a960e526f8a25a 
ct10.6j  8192  16073975  zerotrgt    124128db649116d675503b03310ebbd919d5a837 
ct12.9j  8192  9776974e  zerotrgt    7e944379c3ff3211c84bd4b48cebbd52c586ff88 
ct14.12j  8192  5f77e84d  zerotrgt    ef7a53ad40ef5d3b7ceecb174099b8f2adfda92e 
ct16.15j  8192  ebed04d3  zerotrgt    df5484ab44ddf91fddbb895606875b6733b03a51 
mb7118h.7k  256  4a7c187a  zerotrgt    2463ed582b77252a798b946cc831c4edd6e6b31f 
mb7052.6k  256  cc9c7d43  zerotrgt    707fcc9579bae4233903142efa7dfee7d463ae9a 
pal10h8.12f  44  173f9798  zerotrgta    8b0b0314d25a70e098df5d93191669738d3e57af 
pal10h8.14e  44    zerotrgt  no dump   
pal12l6.17f  52  29b7e869  zerotrgta    85bdb6872d148c393c4cd98872b4920444394620 
cabinet art
PCB zerotrgt.png
additional information
info 0.141u1 [ranger_lennier, B. Sparks, Kevin Eshbach, Smitdogg, The Dumping Union]

0.80u2 [Bryan McPhail, Pierpaolo Prazzoli, David Haywood]

  • Video of the original board running for reference. This is a version I dumped on 1/21/2011, should be in MAME .141u1 or u2. Smitdogg (ID 04193)
  • 0.141u1: Ranger_lennier, B. Sparks, Kevin Eshbach, Smitdogg and The Dumping Union added Zero Target (World, CW). Changed 'Zero Target (World)' to clone 'Zero Target (World, CT)'. Renamed (zerotrgt) to (zerotrgta).
  • 20th January 2011: Smitdogg - We got Zero Target for testing. It's also a previously undumped version.
  • 0.135u2: Fabio Priuli added save state support to Counter Steer driver.
  • 0.131u1: Angelo Salese modified my coin_insertion() function to use ASSERT & CLEAR instead of PULSE_LINE in Zero Target.
  • 0.130: Olivier Galibert and Angelo Salese added preliminary proper ROZ effects hooked up for Zero Target. Angelo Salese fixed sprite positioning bug, fixed a sprite bug when flip y flag is used and cleaned-up the whole routine in Zero Target.
  • 0.129u6: Various improvements to the Zero Target / Counter Steer HW and cleaned-up the driver. Fixed foreground & background colors and hand-tuned sound in Zero Target based on a side-by-side test. Fixed sprite colors [Angelo Salese]. Corrected dipswitch settings for Zero Target [Yasuhiro Ogawa, Angelo Salese]. Changed visible area to 256x240. Added dipswitches 'Coin A/B', 'Cabinet', 'Difficulty', 'Lives' and 'Bonus Life'.
  • 3rd March 2009: Angelo Salese - I'm been looking at the Zero Target / Gekitsui Oh driver. I've fixed the sound and started to look the gfxs in there. I'm not 100% sure about the colors in there, for sure the hud uses a vram attribute for the 'junctions' and that'll explain why colors are wrong especially for these parts. The rest looks correct but awkward, anybody has a screen of the original game? Update: Thanks to various guys that reported to me about the NV video, edited the page with the proper correct colors.
  • 0.106u13: MASH added plds ($0, 200 - pal10h8.12f and pal12l6.17f) to Zero Target and clone.
  • 0.80u2: Bryan McPhail added Zero Target (World) (Data East 1985) and clone Gekitsui Oh (Japan). Various things not yet understood.
  • 28th December 1999: J-ROM dumped Gekitsui Oh (Japan).
Recommended Games (Airforce 3D):

Sky Raider

Red Baron

M.A.C.H. 3

Fire Fox

Future Spy

Us vs. Them

Zero Target


Top Gunner

After Burner II

After Burner (Mega-Tech)

Vs. Top Gun

Captain Sky Hawk (PlayChoice-10)

Air Inferno

G-LOC Air Battle

F-15 Strike Eagle

Strike Fighter

Air Combat

Air Combat 22

Wild Pilot

Wing War

Sky Target

Sega Strike Fighter

Romset: 297 kb / 18 files / 114.0 zip
history Zero Target (c) 1985 Data East.


Main CPU : (2x) M6809 (@ 2 Mhz)

Sound CPU : M6502 (@ 1.5 Mhz)

Sound Chips : (2x) AY8910 (@ 1.5 Mhz)

Screen orientation : Horizontal

Video resolution : 256 x 256 pixels

Screen refresh : 60.00 Hz

Palette Colors : 256

Players : 2

Control : 8-way joystick

Buttons : 5


This game is known in Japan as "Gekitsui Oh".


Game's rom.

Edit this entry at Arcade-History.com: http://www.arcade-history.com/?n=zero-target&page=detail&id=3283&o=2
resource links view in MAWS
view in mini MAWS
view in CAESAR
view high score and replay at MARP
view in Progetto EMMA (Italian)
view game bugs at MAME Testers
view driver bugs at MAME Testers
view in arcade-history.com