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Bombjack Twin (set 1)

  1. Game infos
  2. Parent and Clones
  3. Sound
  4. Driver
  5. Inputs
  6. Controls
  7. Display
  8. Dipswitchs
  9. Roms list
  10. Chips list
  11. Serie
  12. Categories
  13. MAMEinfo
  14. History
  15. High scores
Download bjtwin.zip (4.31 MB)
Snapshot

Game infos

Description Bombjack Twin (set 1)
Name bjtwin
Manufacturer NMK
Year 1993
Runnable yes
System arcade /
Number of players 2P sim
Added to MAME .036b02
Romset size 4.31 MB
Romset file 9 files
Romset zip 1 B
Language English
Evaluation 70 to 80 (Good)
Genre Platform

Parent and clones

Parent This game is the parent

Sound infos

Sound_channels 1

Driver infos

Driver status good
Driver emulation good
Driver color good
Driver sound good
Driver graphic good
Driver cocktail preliminary
Driver protection
Driver savestate yes

Inputs infos

Input service no
Input tilt no
Input players 2
Input buttons
Input coins 2

Controls infos

type ways minimum maximum sensitivity keydelta reverse
joy 8 no

Display infos

type rotate flipx width height refresh pixclock htotal hbend hbstart vtotal vbend vbstart
raster 270 no 384 224 56.18

Dipswitchs

Roms list

console name bios size crc md5 merge sha1 region offset status optional
arcade 8.bpr 256 633ab1c9 acd99fcca41eaab7948ca84988352f1d7d519c61 proms 0 good no
arcade 9.bpr 256 435653a2 575b4a46ea65179de3042614da438d2f6d8b572e proms 0 good no
arcade 93087-1.bin 131072 93c84e2d ad0755cabfef78e7e689856379d6f8c88a9b27c1 maincpu 0 good no
arcade 93087-2.bin 131072 30ff678a aa3ce4905e448e371e254545ef9ed7edb00b1cc3 maincpu 1 good no
arcade 93087-3.bin 65536 aa13df7c 162d4f12364c68028e86fe97ee75c262daa4c699 fgtile 0 good no
arcade 93087-4.bin 1048576 8a4f26d0 be057a2b6d28c623ac1f16cf02ddbe12ca430b4a bgtile 0 good no
arcade 93087-5.bin 1048576 bb06245d c91e2284d95370b8ef2eb1b9d6305fdd6cde23a0 sprites 0 good no
arcade 93087-6.bin 1048576 372d46dd 18f44e777241af50787730652fa018c51b65ea15 oki1 40000 good no
arcade 93087-7.bin 1048576 8da67808 f042574c097f5a8c2684fcc23f2c817c168254ef oki2 40000 good no

Chips list

name tag type clock
M68000 maincpu cpu 10000000
OKI6295 oki2 audio 4000000
Speaker mono audio

Serie

Serie : BombJack
  1. Bomb Jack (set 1) (1984)
  2. Bomb Jack (set 2) (1984)
  3. Bomb Jack (Tecfri, Spain) (1984)
  4. Bomb Jack (1985)
  5. Bomb Jack (Jpn) (1985)
  6. Bomb Jack (UK) (1986)
  7. Bomb Jack (UK) (1986)
  8. Vs. Mighty Bomb Jack (Japan) (1986)
  9. Bomb Jack (Euro, Budget) (1988)
  10. Bomb-Jack (1991)
  11. Bomb Jack (Euro) (1992)
  12. Bombjack Twin (set 1) (1993)
  13. Bombjack Twin (set 2) (1993)
  14. Bombjack Twin (prototype? with adult pictures, set 1) (1993)
  15. Bombjack Twin (prototype? with adult pictures, set 2) (1993)
  16. Bomb Jack (Bra) (2004)
  17. Bomb Jack (Spa) (2004)

Categories

MAMEinfo

0.36b2 [Mirko Buffoni]


TEST MODE:

- Press Player 2 buttons 1+2 during reset. "Ready?" will appear and then press Player 1 buttons in this sequence: 2-2-2, 1-1-1, 2-2-2 and 1-1-1. The release date of this program will appear.


WIP:

- 0.181: Hooked up OKI6295 in clone Atom (bootleg of Bombjack Twin), needs banking and improved sound tempo. Adjusted dipswitches as per dipsheet [Osso].

- 0.179: Sugoi Helsinki added clone Bombjack Twin (prototype? with adult pictures, set 2). Note: These might actually just be Korean versions rather than prototypes. This one is encrypted unlike the other, but same 'cheap' looking PCB with typical Korean parts mixed with the original NMK customs. Changed description of clone (prototype? with adult pictures) to 'Bombjack Twin (prototype? with adult pictures, set 1)'.

- 0.148u5: f205v added clone Atom (bootleg of Bombjack Twin). David Haywood clearing out the backlog, reworked sprite and sound hardware.

- 0.141u1: ranger_lennier, Smitdogg and The Dumping Union added clone 'Bombjack Twin (prototype? with adult pictures)'.

- 8th January 2011: Smitdogg - We dumped the Bombjack Twin prototype (has girls after the bonus screens).

- 25th December 2010: Smitdogg - We got a crazy rare Bombjack Twin prototype board, the only one of its kind I've ever seen. It might be a one of a kind.

- 0.133u1: Brian Troha added DIP locations to Bombjack Twin.

- 0.124u1: Added clone Bombjack Twin (set 2). Changed parent description to 'Bombjack Twin (set 1)'.

- 0.57: Fixed cpu1 roms length to 128kb and added 2x proms (unknown).

- 0.37b8: Changed 68000 CPU1 clock speed to 10MHz, the 2x OKI6295 to 24242 Hz. Fixed sound1/2 rom loading.

- 22nd August 2000: Nicola Salmoria fixed a 68k bug affecting Bombjack Twin.

- 0.36b11: Changed clock speed of the 2x OKI6295 to 22050 Hz.

- 0.36b9: Changed clock speed of the 2x OKI6295 to 24000 Hz.

- 0.36b2: Mirko Buffoni added 'Bombjack Twin' (NMK 1993). Some code has to be patched out for this to work (see below). The program remaps button 2 and 3 to button 1, so you can't enter the above sequence. I haven't yet figured out why music stops so soon, but it's surely due to interrupt timing (the hardware is so simple!).

- 1st August 1999: Mirko Buffoni added test mode code to Bombjack Twin.

- 28th July 1999: Mirko Buffoni fixed the sound and dipswitches in Bombjack Twin.

- 27th July 1999: Mirko Buffoni sent in a driver for Bombjack Twin.

- 31st January 1999: Dumped Bombjack Twin (set 1).


LEVELS: 26 (endless)


Other Emulators:

* FB Alpha

* Raine


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History


Arcade Video game published 26 years ago:

Bomb Jack Twin (c) 1993 NMK.

Bomb Jack Twin is a direct sequel to the 1984 original and retains the same platform-based collect-the-bombs gameplay of its predecessor.

Changes over the original game include a slightly faster playing tempo and the option for simultaneous two-player action. As with the prequel, extra points and bonuses can be earned by collecting bonus coins and bombs with their fuses still lit. Bomb Jack Twin also retains the 'Powerball' feature of its predecessor which, when collected, freezes the level's enemies for several seconds, allowing them to be destroyed.

The way the sequel's levels are structured differs significantly from the original game. In "Bomb Jack", each screen was simply numbered sequentially and the background picture changed on every screen, but the stages in "Bomb Jack Twin" are grouped into 'rounds', each consisting of three screen layouts but retaining a single background picture for the duration of that round.

Another new addition is the bonus screen. This appears every couple of rounds and players must try to collect all bombs on the screen within a tight time limit to earn extra bonus points. There are no enemies on the bonus screens and the background is plain black.

As with the first game, "Bomb Jack Twin" takes place in different locations throughout the world. A map screen is displayed before the start of each new round showing the next location. The available locations are: Germany, Thailand, Nevada, Japan, England, Hong Kong and China.

- TECHNICAL -

Game ID : UPL-93087

Main CPU : Motorola 68000 (@ 10 Mhz)
Sound Chips : (2x) OKI6295 (@ 4 Mhz)

Players : 2
Control : 8-way joystick
Buttons : 2

- TRIVIA -

Bomb Jack Twin was released in December 1993 in Japan.

- TIPS AND TRICKS -

* Secret Message : Reset Game and hold down Player 2 buttons 1 and 2. If you did it fast enough, you will see the message 'Ready?'. If not try again. Press the following Player 1 buttons : 2(x3) 1(x3) 2(x3), 1(x3). If you did this correctly, you should see another message '9th Mar. 1992'. And you are in the test mode.

- SERIES -

1. Bomb Jack (1984, Arcade)
2. Bomb Jack II (1986, C64)
3. Mighty Bomb Jack [Model TCF-MB] (1986, Famicom)
4. Bomb Jack Twin (1993, Arcade)

- STAFF -

Sound : Manabu Namiki

- PORTS -

* CONSOLES:
Nintendo Game Boy Advance (2002) included in "Bomb Jack World" [Prototype]

- CONTRIBUTE -

Edit this entry: https://www.arcade-history.com/?&page=detail&id=307&o=2

High scores

MAMESCORE records : 02/04/2017 13:01

genekelly___________________2.905.490
sawys_______________________2.441.380
bipbip________________________855.150
nicky634______________________574.590
zarouk________________________408.370
olivier_______________________373.510
starfab_______________________352.560
thiou_________________________217.050
hulkiii_______________________152.100