game
icon
title Big Twin
set name bigtwin
manufacturer Playmark
year 1995
genre Puzzle (hof)
category Puzzle / Drop *Mature* (hof)
driver status good
driver source playmark.c
snapshots MW: in game / CT: in game | title | select / PS: in game | title
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rating

61.3% after 39 votes
 
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display
colour emulation good
palette 1024
display type raster
orientation horizontal
resolution 320x240
frequency 58.000000Hz
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sound
sound emulation good
channels mono
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controls
players 2
nplayers 2P sim
controls 8 way joystick
buttons 1
coin slots 2
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hardware
cpu 68000 @ 12MHz
cpu PIC16C57 @ 12MHz
audio OKI6295 @ 1MHz
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data
version added .037b07
last change(s) .062
roms
name size crc set flags sha1
2.302  524288  e6767f60  bigtwin    ec0ba1c786e6fde04601c2f3f619e3c6545f9239 
3.301  524288  5aba6990  bigtwin    4f664a91819fdd27821fa607425701d83fcbd8ce 
16c57hs.015  11596  c07e9375  bigtwin    7a6714ab888ea6e37bc037bc7419f0998868cfce 
4.311  262144  6f628fbc  bigtwin    51cdee457aef79fef5d89d30a173afdf13fbb2ef 
5.312  262144  6a9b1752  bigtwin    7c78157cd6b3d631704d2aca1a5756c69c87d581 
6.313  262144  411cf852  bigtwin    1b66cec672b6ec6974d9e82afc6ec58b78c92ee4 
7.314  262144  635c81fd  bigtwin    64c787a37fcd1ba7c747ec25ff5b949aad3914ec 
8.321  131072  2749644d  bigtwin    f506ed1a14ee411eda8a7e639f5572e35b89b13f 
9.322  131072  1d1897af  bigtwin    0ad00906b94443d7ceef383717b39c6aa8cca241 
10.323  131072  2a03432e  bigtwin    44722b83093211d88460cbcd9e9c0b638d24ad3e 
11.324  131072  2c980c4c  bigtwin    77af29a1f5d4302650915f4a7daf2918a2519a6e 
1.013  262144  ff6671dc  bigtwin    517941946a3edfc2da0b7aa8a106ebb4ae849beb 
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cabinet art
art no cabinet, marquee, flyer, control panel or PCB images found
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additional information
info 0.37b7 [Nicola Salmoria]

WIP:
  • 0.122u6: Changed PIC16C57 CPU2 clock speed to 12MHz.
  • 0.112u3: Brian Troha and Speedfreak fixed dipswitches in Big Twin. Added dipswitch 'Demo Sounds'.
  • 0.101u5: Added 'Coin A/B Mode 2' dipswitches.
  • 0.96u2: Changed PIC16C57 CPU2 clock speed to 3MHz and VSync to 58Hz.
  • 0.94u2: Nicola Salmoria found bitmap enable bit, fixes girl pictures sticking in Big Twin and Excelsior. Pierpaolo Prazzoli changed bitmap to be drawn after the fg_tilemap and added 'Allow Continue' dipswtich.
  • 0.69b: Quench got sound working in Big Twin with the use of the PIC HEX dump. Added PIC16C57 (1MHz) CPU2. Changed MSM6295 clock speed to 7575 Hz.
  • 31st May 2003: Quench sent in various fixes to the PIC16C5x core and added sound to Big Twin.
  • 0.62: Added PIC16C57 hexdump to be converted to region user1. Fixed rom names.
- 0.37b7: Nicola Salmoria added Big Twin (Playmark 1995). TODO: Sound is controlled by a pic16c57 whose ROM is missing. The pixel bitmap might be larger than what I handle, or the vertical scroll register has an additional meaning. The usual scroll value is 0x7f0, the game is setting it to 0x5f0 while updating the bitmap, so this should either scroll the changing region out of view, or disable it. During gameplay, the image that scrolls down might have to be different since the scroll register is in the range 0x600-0x6ff. As it is handled now, it is certainly wrong because after game over the bitmap is left on screen.
  • 28th August 2000: Nicola Salmoria sent in a driver for Big Twin, without sound support though.
LEVELS: 40 (endless)

Romset: 2828 kb / 12 files / 772.6 zip
history Big Twin (c) 1995 Playmark.


Align 3 identical balls in a row to make them disappear. Continue doing this until a nude women is revealed at the right hand side of the screen.


- TECHNICAL -


Main CPU : 68000 (@ 12 Mhz), PIC16C57 (@ 3 Mhz)

Sound Chips : OKI6295 (@ 7.575 Khz)


Screen orientation : Horizontal

Video resolution : 320 x 240 pixels

Screen refresh : 58.00 Hz

Palette colors : 1024


Players : 2

Control : 8-way joystick

Buttons : 1


- TRIVIA -


Developed by Game Over.


- SOURCES -


Game's rom.



Edit this entry at Arcade-History.com: http://www.arcade-history.com/?n=big-twin&page=detail&id=245&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
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cheats
cheats
code comments
00000000:FF0011:00000063:FFFFFFFF  Infinite Credits
00000000:FF010B:00000063:FFFFFFFF  Infinite Lives PL1
00000001:FF00D9:00000000:FFFFFFFF  Finish this Level Now! PL1
00000000:FF0975:00000063:FFFFFFFF  Infinite Lives PL2
00000001:FF0943:00000000:FFFFFFFF  Finish this Level Now! PL2
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