MAWS - showing resource: bjtwin

title	Bombjack Twin (set 1)
set name	bjtwin
manufacturer	NMK
year	1993
genre	Platform (hof)
category	Platform / Run Jump (hof)
driver status	good
driver source	nmk16.c
snapshots	MW: in game / CT: in game \| title / PS: in game \| title \| scores zoom
rating	65.7% after 34 votes
clones	Bombjack Twin (set 2)

colour emulation	good
palette	1024
display type	raster
orientation	vertical
resolution	224x384
frequency	56.000000Hz

sound emulation	good
channels	mono

players	2
nplayers	2P sim
controls	8 way joystick
buttons	2
coin slots	2

cpu	68000 @ 10MHz
audio	OKI6295 @ 4MHz
audio	OKI6295 @ 4MHz

version added

.036b02

last change(s)

.057

roms

name	size	crc	set	sha1
93087-1.bin	131072	93c84e2d	bjtwin	ad0755cabfef78e7e689856379d6f8c88a9b27c1
93087-2.bin	131072	30ff678a	bjtwin	aa3ce4905e448e371e254545ef9ed7edb00b1cc3
93087-3.bin	65536	aa13df7c	bjtwin	162d4f12364c68028e86fe97ee75c262daa4c699
93087-4.bin	1048576	8a4f26d0	bjtwin	be057a2b6d28c623ac1f16cf02ddbe12ca430b4a
93087-5.bin	1048576	bb06245d	bjtwin	c91e2284d95370b8ef2eb1b9d6305fdd6cde23a0
93087-6.bin	1048576	372d46dd	bjtwin	18f44e777241af50787730652fa018c51b65ea15
93087-7.bin	1048576	8da67808	bjtwin	f042574c097f5a8c2684fcc23f2c817c168254ef
8.bpr	256	633ab1c9	bjtwin	acd99fcca41eaab7948ca84988352f1d7d519c61
9.bpr	256	435653a2	bjtwin	575b4a46ea65179de3042614da438d2f6d8b572e

flyer

bjtwin.png

info

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:

0.124u1: Added clone Bombjack Twin (set 2).
0.57: Fixed cpu1 roms length to 128kb and added 2x proms (function unknown).
0.37b8: Changed 68000 CPU1 clock speed to 10MHz, the 2x OKI6295 to 24242 Hz and the sound1/2 rom address to $40000.
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.

LEVELS: 26 (endless)

Other Emulators:

Raine

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Snow Brothers 3 - Magical Adventure

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Romset: 4417 kb / 9 files / 1.88 zip

history

Bomb Jack Twin (c) 1993 NMK.

2 players at the same time adds a new twist to this platform game.

- TECHNICAL -

Game ID : UPL-93087

Main CPU : 68000 (@ 10 Mhz)

Sound Chips : (2x) OKI6295 (@ 4 Mhz)

Screen orientation : Vertical

Video resolution : 224 x 384 pixels

Screen refresh : 56.00 Hz

Palette colors : 1024

Players : 2

Control : 8-way joystick

Buttons : 2

- 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 -

Bomb Jack (1984)
Bomb Jack II (1986, Commodore C64)
Vs. Mighty Bomb Jack (1986)
Bomb Jack Twin (1993)

Sound : Manabu Namiki
- SOURCES -
Game's rom.
Edit this entry at Arcade-History.com: http://www.arcade-history.com/?n=bomb-jack-twin&page=detail&id=307&o=2

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 GameFAQs
view in KLOV
view in VGMuseum Gamepics

cheats

code	comments
00000000:F9003:00000009:FFFFFFFF	Infinite Credits
00100000:F9092:00000990:FFFFFFFF	Infinite Bonus Game Time
00100000:F1204:00000140:FFFFFFFF	Infinite "Power" Time
00000000:F9071:00000004:FFFFFFFF	Always x5 Bonus Multiplier
00000000:F9073:00000013:FFFFFFFF	Always next bomb for "power"
00000001:F9071:00000004:FFFFFFFF	Get x5 Bonus Multiplier Next!
00000001:F9073:00000013:FFFFFFFF	Get next bomb for "power"Now!
60000000:00000:00000000:00000000
00000000:F1037:00000006:FFFFFFFF	Infinite Lives PL1
00000000:F106F:000000FF:FFFFFFFF	Invincibility PL1
00000000:F105D:00000063:FFFFFFFF	Maximum items PL1
00000000:F106B:00000018:FFFFFFFF	Max bombs (solo/bonus) PL1
00000000:F106D:00000017:FFFFFFFF	Max fire bombs(solo/bonus)PL1
00000000:F106B:00000046:FFFFFFFF	Max bombs (dual game) PL1
00000000:F106D:00000045:FFFFFFFF	Max fire bombs (dual game)PL1
60000000:00000:00000000:00000000
00000000:F1137:00000006:FFFFFFFF	Infinite Lives PL2
00000000:F116F:000000FF:FFFFFFFF	Invincibility PL2
00000000:F115D:00000063:FFFFFFFF	Maximum items PL2
00000000:F116B:00000018:FFFFFFFF	Max bombs (solo/bonus) PL2
00000000:F116D:00000017:FFFFFFFF	Max fire bombs(solo/bonus)PL2
00000000:F116B:00000046:FFFFFFFF	Max bombs (dual game) PL2
00000000:F116D:00000045:FFFFFFFF	Max fire bombs (dual game)PL2