game
icon
title Gunforce - Battle Fire Engulfed Terror Island (US)
set name gunforcu
manufacturer Irem America
year 1991
genre Platform (hof)
category Platform / Shooter Scrolling (hof)
driver status good
driver source m92.c
snapshots MW: in game | parent / CT: in game | title | parent / EJ: parent / PS: in game | title | scores | parent
zoom
rating

62.1% after 16 votes
 
parent Gunforce - Battle Fire Engulfed Terror Island (World)
other clones Gunforce - Battle Fire Engulfed Terror Island (Japan)
display
colour emulation good
palette 2048
display type raster
orientation horizontal
resolution 320x240
frequency 60.000000Hz
sound
sound emulation good
channels mono
controls
players 2
nplayers 2P sim
controls 8 way joystick
buttons 2
coin slots 2
hardware
cpu V33 @ 9MHz
cpu V30 @ 7.15909MHz
audio YM2151 @ 3.579545MHz
audio Irem GA20 @ 3.579545MHz
data
version added .036b06
last change(s) none since version .53
roms
name size crc set flags sha1
gf_h0-d.5m  131072  a6db7b5c  gunforcu    5656473599e924ab799ea3c6f39d8ce34b08cb29 
gf_l0-d.5f  131072  82cf55f6  gunforcu    42a2de61f2c5294c81fb135ea2472cc78637c66c 
gf_h1-d.5l  131072  08a3736c  gunforcu    0ae904cf486a371f8b635c1f9dc5201e38a73f5a 
gf_l1-d.5j  131072  435f524f  gunforcu    65c282ec50123747880850bc32c7ace0471ed9f2 
gf_sh0.rom  65536  3f8f16e0  gunforce    a9f568c1b585c2cf13b21716954dac0a89936fc6 
gf_sl0.rom  65536  db0b13a3  gunforce    6723026010610b706725a5284a7b8d70fe479dae 
gf_c0.rom  262144  b3b74979  gunforce    b5b4a4775e0b28c3f37273f93f69886c911af4aa 
gf_c1.rom  262144  f5c8590a  gunforce    a7f90f23051f8ab2b2d925e950a5ef3c260170ca 
gf_c2.rom  262144  30f9fb64  gunforce    f86e01b0d74a1f6c19d97d6d0e0f624f050dad10 
gf_c3.rom  262144  87b3e621  gunforce    8e2655c6e83d00c38210fdced25003793bd93d9f 
gf_000.rom  262144  209e8e8d  gunforce    9720be888905be709733c53da207c3406d73aeb1 
gf_010.rom  262144  6e6e7808  gunforce    92c30eecf8f3669581720be6e49db87fbfac7d88 
gf_020.rom  262144  6f5c3cb0  gunforce    e41572c267489e2078f8d5605c97abe2034a091a 
gf_030.rom  262144  18978a9f  gunforce    aa484710a7c3561a9922f119a064f9205475ae64 
gf-da.rom  131072  933ba935  gunforce    482811e01239feecf10e232566a7809d0d4f11b8 
cabinet art
additional information
info 0.36b6 [Bryan McPhail]

WIP:
  • 16th November 2008: Guru - I recently picked up a pile of junk for spares and repairs from a local friend. It turned out there was quite a bit of interesting stuff in this lot. As far as I can make out, I got Gunforce (Irem).
  • 0.104u8: Fixed rom names.
  • 0.53: Bryan McPhail and Nicola Salmoria decrypted the sound CPU in Gunforce, Blade Master, Lethal Thunder, Undercover Cops, Mystic Riders, Major Title 2, Hook, R-Type Leo, In the Hunt and Perfect Soldiers.
  • 18th July 2001: Nicola Salmoria fixed several NEC CPU core bugs and errors in the IREM CPU decryption tables, and got sound working in Gunforce.
  • 0.37b8: Added clone 'Gunforce - Battle Fire Engulfed Terror Island (Japan)'. Bryan McPhail added preliminary Irem GA20 sound emulation. Preliminary sound in Blade Master, Gunforce, Undercover Cops and Lethal Thunder. Added V30 (14318180 Hz) CPU2, YM2151 (3579545 Hz), GA20 (3579545 Hz) and fixed gfx1/gfx2 rom addresses.
  • 10th April 2000: Guru - Dumped Gun Force (Irem, Japan).
  • 0.36b15: Added dipswitches 'Difficulty', 'Bonus Life', 'Allow Continue' and 'Demo Sounds'.
  • 3rd December 1999: Bryan McPhail sent in a M92 update with a few fixes to Gunforce and some speedups.
  • 0.36b9: Bryan McPhail and Nao fixed a few bugs in the NEC CPU core that caused problems in Hook, Gunforce, Lethal Thunder and maybe others.
  • 0.36b6: Bryan McPhail added Gunforce - Battle Fire Engulfed Terror Island (World) (Irem 1991) and clone (US). Issues: Random crashes. Water doesn't appear on last(?) level. Waterfalls on level 3(?) should appear over sprites. Bit 0x8 in playfield 3 set - new type of split tilemap?
  • 24th September 1999: Oliver Bergmann sent in a NEC V20, V30, V33 cpu core, and Bryan McPhail submitted an Irem M92 driver with support for Blade Master, Gunforce, Lethal Thunder, Hook, Undercover Cops, R-type Leo, Major Title 2 and In The Hunt, but none of the games have sound because of an encrypted sound CPU.
LEVELS: 6

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Contra 3: The Alien Wars (Nintendo Super System)

Vs. Platoon

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M.I.A. - Missing in Action

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Metal Slug X

Metal Slug 3

Metal Slug 4

Metal Slug 5

-

Combat School

Romset: 2816 kb / 15 files / 920 zip
history Gun Force - Battle Fire Engulfed Terror Island (c) 1991 Irem.


A 2-player co-op horizontal scroller. Players shoot other soldiers, climb into jeeps and helicopters, pick up different weapons and destroy the end-level building.


- TECHNICAL -


Irem M-92A system hardware


Main CPU : V33 (@ 9 Mhz), V30 (@ 7.15909 Mhz)

Sound Chips : YM2151 (@ 3.579545 Mhz), GA20 (@ 3.579545 Mhz)


Screen orientation : Horizontal

Video resolution : 320 x 240 pixels

Screen refresh : 60.00 Hz

Palette colors : 2048


Players : 2

Control : 8-way joystick

Buttons : 2


- TRIVIA -


Released in June 1991.


- UPDATES -


The US version is slightly different, it has the 'Winners Don't Use Drugs' screen.


- SERIES -
  1. Gun Force - Battle Fire Engulfed Terror Island (1991)
  2. Gun Force II (1994)
resource links view in MAWS
view in CAESAR
view high score and replay at MARP
view in Progetto EMMA (Italian)
view in arcade-history.com
view in arcade-history.com
view in GameFAQs
view in KLOV
view in MamEnd
view in System16
view in The Arcade Flyer Archive
view in The Arcade Flyer Archive
view in VGMuseum Gamepics
view in VGMuseum Gamepics
view in VGMuseum Gamepics
cheats
cheats
code comments
00000000:E6370:00000063:FFFFFFFF  Infinite Time
00080300:E0002:00000005:00000000  Select Starting Level
60000000:00000:00000000:00000000 
00000000:E61C2:00000009:FFFFFFFF  Infinite Lives PL1
00000000:E011E:00000064:FFFFFFFF  Invincibility PL1
81100000:E013A:000003E7:000E0020  Infinite Ammo PL1
60000000:00000:00000000:00000000 
00000000:E61C4:00000009:FFFFFFFF  Infinite Lives PL2
00000000:E015E:00000064:FFFFFFFF  Invincibility PL2
81100000:E017A:000003E7:000E0020  Infinite Ammo PL2
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