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Gaplus (GP2 rev. B)

  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. Samples list
  12. Serie
  13. Categories
  14. MAMEinfo
  15. History
  16. High scores
Download gaplus.zip (99 KB)
Snapshot

Game infos

Description Gaplus (GP2 rev. B)
Name gaplus
Manufacturer Namco
Year 1984
Runnable yes
System arcade /
Number of players 2P alt
Added to MAME .035b09
Romset size 99 KB
Romset file 20 files
Romset zip 53 B
Language English
Evaluation 90 to 100 (Best Games)
Genre Shooter

Parent and clones

Parent This game is the parent

Sound infos

Sound_channels 1

Driver infos

Driver status imperfect
Driver emulation good
Driver color good
Driver sound imperfect
Driver graphic imperfect
Driver cocktail
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 90 no 288 224 60.60606

Dipswitchs

Roms list

console name bios size crc md5 merge sha1 region offset status optional
arcade gp2-1.1n 256 8bc8022a c76f9d9b066e268621d41a703c5280261234709a proms 100 good no
arcade gp2-1.4b 8192 ed8aa206 4e0a31d84cb7aca497485dbe0240009d58275765 sub2 e000 good no
arcade gp2-10.11n 8192 6cd8ce11 fc346e98737c9fc20810e32d4c150ae4b4051979 gfx2 2000 good no
arcade gp2-11.11p 8192 57740ff9 16873e0ac5f975768d596d7d32af7571f4817f2b gfx2 0 good no
arcade gp2-12.11r 8192 7316a1f1 368e4541a5151e906a189712bc05192c2ceec8ae gfx2 4000 good no
arcade gp2-2.2n 256 8dabc20b 64d7b333f529d3ba66aeefd380fd1cbf9ddf460d proms 200 good no
arcade gp2-2b.8b 8192 b3cb90db 025c2f3978772e1ecbbf36842dc7c2203ee91a1f maincpu e000 good no
arcade gp2-3.1p 256 a5091352 dcd6dfbfbd5281ba0c7b7c189d6fde23617ed3e3 proms 0 good no
arcade gp2-3b.8c 8192 d77840a4 81402b28a2d5ac2d1301252534afa0cb65d7e162 maincpu c000 good no
arcade gp2-4.3f 256 2d9fbdd8 e6a23cd5ce3d3e76de3b70c8ab5a3c45b1147af4 namco 0 good no
arcade gp2-4.8d 8192 e525d75d 93fcd8b940491abf6344181811d0b35765d7e45c maincpu a000 good no
arcade gp2-5.6n 512 c7d31657 a93a5bc448dc127e1389d10a9cb06acadfe940cf proms 600 good no
arcade gp2-5.8s 8192 f3d19987 a0107fa4659597ac42c875ab1c0deb845534268b gfx1 0 good no
arcade gp2-6.11b 8192 75b18652 398059da967c80321a9ec94d982a6c0b3c970c5f sub e000 good no
arcade gp2-6.6p 512 6f99c2da 955dcef363870ee8e91edc73b9ea3ce489738aad proms 400 good no
arcade gp2-7.11c 8192 0621f7df b86020f819fefb134cb57e203f7c90b1b29581c8 sub c000 good no
arcade gp2-7.6s 256 2faa3e09 781ffe9088476798409cb922350eff881590cf35 proms 300 good no
arcade gp2-8.11d 8192 42b9fd7c f230eb0ad757f0714c0ac81c812e950778452947 sub a000 good no
arcade gp2-9.11m 8192 e6a9ae67 99c1e67c3b216aa1b63f199e21c73cdedde80e1b gfx2 6000 good no
arcade pal10l8.8n 44 08e5b2fe 1aa7fa1a61795703af84ae427d0d8588ef8c4c3f plds 0 good no

Chips list

name tag type clock
M6809 sub2 cpu 1536000
MB8843 62xx:mcu cpu 2048000
Namco 15XX namco audio 24000
Samples samples audio
Speaker mono audio

Samples list

name
bang

Serie

Serie : Galaxian
  1. Space Invaders Galactica (galaxiana hack) (1979)
  2. Galaxian Part 4 (hack) (1979)
  3. Galaxian Part X (moonaln hack) (1979)
  4. Galaxian (bootleg, set 1) (1979)
  5. Galaxian (bootleg, set 3) (1979)
  6. Galaxian (Namco set 1) (1979)
  7. Galaxian (Namco set 2) (1979)
  8. Galaxian (bootleg, set 2) (1979)
  9. Galaxian (Midway set 1) (1979)
  10. Galaxian (Midway set 2) (1979)
  11. Galaxian (Taito) (1979)
  12. Galaxian Turbo (superg hack) (1979)
  13. Kamakazi III (superg hack) (1979)
  14. Kamikaze (Potomac Games) (1979)
  15. Moon Alien (1979)
  16. Star Fighter (1979)
  17. Super Galaxians (galaxiana hack) (1979)
  18. Super Galaxians (Silver Systems) (1979)
  19. Swarm (bootleg?) (1979)
  20. Zero Time (1979)
  21. Astrians (clone of Swarm) (1980)
  22. Galaxian (Recreativos Franco S.A. Spanish bootleg) (1980)
  23. Moon Alien Part 2 (1980)
  24. Moon Alien Part 2 (older version) (1980)
  25. Super GX (1980)
  26. Galaga (Namco rev. B) (1981)
  27. Galaga (1981)
  28. Galaga (Midway set 1 with fast shoot hack) (1981)
  29. Galaga (Midway set 2) (1981)
  30. Galaga (Midway set 1) (1981)
  31. Galaga (Namco) (1981)
  32. Galaxian (1981)
  33. Galaxian (12K) (1981)
  34. Gallag (1981)
  35. Swarm (1981)
  36. Galaxian (1982)
  37. Galaxian (1982)
  38. Galaxians (1982)
  39. Swarm (1982)
  40. Galaxian (1983)
  41. Galaxian (Thunder Mountain) (clean crack) (1983)
  42. Galaxian (1983)
  43. Galaxian (1983)
  44. Galaxian (1983)
  45. Galaxian (1983)
  46. Galaxian (1983)
  47. Galaxian (Alt) (1983)
  48. Galaxian (Alt?) (1983)
  49. Galaga (Tw) (1983?)
  50. Galaga (PAL) (1984)
  51. Galaga (Jpn) (1984)
  52. Galaga (Euro) (1984)
  53. Galaga 3 (GP3 rev. D) (1984)
  54. Galaga 3 (GP3 rev. C) (1984)
  55. Galaga 3 (GP3) (1984)
  56. Galaga 3 (set 4) (1984)
  57. Galaga 3 (set 5) (1984)
  58. Galaxian (Jpn) (1984)
  59. Galaxian (Euro) (1984)
  60. Galaxian (Jpn, Rev. A) (1984)
  61. Galaxian (1984)
  62. Galaxian (Jpn, Alt) (1984)
  63. Galaxian (Jpn) (1984)
  64. Gaplus (GP2 rev. B) (1984)
  65. Gaplus (GP2) (1984)
  66. Gaplus (GP2 rev D, alternate hardware) (1984)
  67. Gatsbee (1984)
  68. Galaga (1985)
  69. Galaga (1985)
  70. Gaplus (1985)
  71. Gaplus (Alt Format) (1985)
  72. Galaxian's Revenge (UK) [Amstrad Computer User] (1986)
  73. Star Fighter (Euro) (1986)
  74. Galaga '88 (1987)
  75. Galaga '88 (02-03-88) (1987)
  76. Galaga '88 (Japan) (1987)
  77. Galaga '88 (1988)
  78. Galaga - Demons of Death (Euro) (1989)
  79. Fantastic (Galaga conversion on Galaxian hardware) (198?)
  80. Galaga (198?)
  81. Galaga (198?)
  82. Galaxian (198?)
  83. Galaxian X-1 (198?)
  84. Galaxians (198?)
  85. Galaga (1990)
  86. Galaga '88 (1990)
  87. Galaxian (1990)
  88. Gaplus (Tecfri PCB) (1992)
  89. Star Fighter (1992)
  90. Galaxian (1996)
  91. Star Fighter (USA) (1996)
  92. Star Fighter (USA) (1996)
  93. Galaxian 3 - Theater 6 : Project Dragoon (199?)
  94. Galaxian (Kor) (199?)
  95. Galaga (Jpn) (19??)
  96. Galaxian (19??)
  97. Galaxian (Jpn) (19??)
  98. GALAXIANS (19??)
  99. Galaxian (Alt) (19??)
  100. Star Fighter (Ned) (19??)
  101. Star Fighter (19??)
  102. Galaxian Test ROM (19??)
  103. Ms. Pac-Man/Galaga - 20th Anniversary Class of 1981 Reunion (V1.08) (2000)
  104. Ms. Pac-Man/Galaga - 20th Anniversary Class of 1981 Reunion (V1.00) (2000)
  105. Ms. Pac-Man/Galaga - 20th Anniversary Class of 1981 Reunion (V1.01) (2000)
  106. Ms. Pac-Man/Galaga - 20th Anniversary Class of 1981 Reunion (V1.02) (2000)
  107. Ms. Pac-Man/Galaga - 20th Anniversary Class of 1981 Reunion (V1.03) (2000)
  108. Ms. Pac-Man/Galaga - 20th Anniversary Class of 1981 Reunion (V1.04) (2000)
  109. Galaga - Destination Earth (USA) (2000)

Categories

MAMEinfo

0.148u3 [Manuel Abadia, Ernesto Corvi]

0.62 [Stephane Humbert]

0.35b9 [Manuel Abadia, Ernesto Corvi]


Artwork available

Samples required


Bugs:

- In reverse scrolling stages after challenging stages, the background should scroll more quickly. Fujix (ID 00434)


WIP:

- 0.163: Osso added save state support to Gaplus.

- 0.155: System11 added clone Gaplus (Tecfri PCB). Give the Tecfri set the correct inputs including dipswitch settings. Correct rom labels as per PCB & replace damaged GP2 10 rom [Brian Troha].

- 0.153: Misc cleanups [Osso].

- 0.148u3: ANY and The Dumping Union added clone Gaplus (GP2). System11 added clone Galaga 3 (GP3). Corrected some issues between Galaga 3 & Gaplus sets [Brian Troha]. Changed clone (rev. B) to parent 'Gaplus (GP2 rev. B)', (rev. D) to clone 'Galaga 3 (GP3 rev. D)' and clones (alternate hardware) to 'Gaplus (GP2 rev D, alternate hardware)', (rev. C) to 'Galaga 3 (GP3 rev. C)', (set 2) to 'Galaga 3 (set 4)' and (set 3) to 'Galaga 3 (set 5)'. Renamed (galaga3a) to (galaga3c), (galaga3) to (galaga3a), (gaplus) to (galaga3), (gapluso) to (gaplus) and (gaplusa) to (gaplusd).

- 0.141u1: New NAMCO 62xx device with internal ROM (I/O and explosion generator) [Dr. Decapitator, Phil Bennett, Andrew Gardner]. Added MB8843 (2048000 Hz) CPU4 and MCU rom 62xx.bin.

- 0.139u1: Atari Ace removed global variables from NAMCO sound core.

- 0.136: Fabio Priuli converted Namco I/O chips 56xx, 58xx and 59xx to be devices and converted Gaplus to use the new code.

- 0.133u1: Brian Troha added DIP locations to Gaplus and clones.

- 0.131u1: MooglyGuy merged memory maps in Gaplus.

- 0.118u5: Changed palettesize to 768 colors.

- 0.106u12: MASH added pld ($0 - pal10l8.8n) to Gaplus and clones (alternate hardware) and (rev. B).

- 0.106u2: Fixed rom names in clone Gaplus (alternate hardware).

- 0.93: Added clock parameter to Namco 15XX sound (24000 Hz).

- 0.90: Brian Troha fixed Gaplus driver to use its samples (bang.wav).

- 0.79u1: Replaced Namco sound with Namco 15XX.

- 0.78u4: Nicola Salmoria added non-hack cocktail mode implementation to Gaplus and working 'Round Advance' dipswitch. Added dipswitches 'Round Advance', 'Demo Sounds' and 'Unused'. Changed description of clones 'Galaga 3 (Midway)' to 'Galaga 3 (set 3)' and 'Galaga 3 (alternate set)' to 'Galaga 3 (set 2)'.

- 0.62: Added Gaplus (rev. D). Changed 'Gaplus (set 1)' to clone 'Gaplus (alternate hardware)' and clones 'Gaplus (set 2)' to 'Gaplus (rev. B)', 'Galaga 3 (set 1)' to 'Galaga 3 (rev. C)', 'Galaga 3 (set 2)' to 'Galaga 3 (Midway)' and 'Galaga 3 (set 3)' to 'Galaga 3 (alternate set)'. Renamed (gaplusa) to (gapluso), (gaplus) to (gaplusa), (galaga3a) to (galaga3m) and (galaga3b) to (galaga3a).

- 2nd September 2002: Stephane Humbert added a new version to the Gaplus driver.

- 0.37b14: Added clone Galaga 3 (set 1). Renamed (galaga3) to (galaga3b).

- 27th March 2001: Guru added new ROM sets for The Final Round, Galaga 3 and Tecmo World Cup '90.

- 0.37b12: Changed VSync to 60.606060Hz.

- 10th April 2000: Guru - Dumped Galaga 3 (Namco, alt set 3).

- 28th March 2000: Manuel Abadia added cocktail support to Baraduke, Metro-Cross, Gaplus and Pandora's Palace.

- 12th April 1999: Ernesto Corvi sent in a newer Gaplus driver with custom I/O chips fully emulated (all 4 sets work now) and some other changes like correct starfield speed.

- 0.35b9: Manuel Abadia and Ernesto Corvi added 'Gaplus (set 1)' (Namco 1984) and clones (set 2) and Galaga 3 (set 1) and (set 2).

- 29th March 1999: Nicola fixed the screeching sounds of Gaplus.

- 28th March 1999: Ernesto Corvi sent in a new Gaplus driver with preliminary Galaga 3 support added (not working because of a different custom I/O chip).

- 27th March 1999: Ernesto Corvi sent in a much better Gaplus driver which is now fully playable and has also sound support.

- 26th March 1999: Nicola fixed Gaplus colors.

- 24th March 1999: Ernesto Corvi has sent in a preliminary driver for Gaplus (happy now QuarterGuy?), made by Manuel Abadia and him. There are still many things to figure out, first being controls and colors.


LEVELS: 40 (endless)


Other Emulators:

* HiVE


Recommended Games (Galaxian):

Galaxian

Ghostmuncher Galaxian

Moon Alien Part 2

Galaga

Namco Classic Collection Vol.1 (Galaga)

Tenkomori Shooting (Galaga)

Ms. Pac-Man/Galaga - 20th Anniversary Class of 1981 Reunion

Pac-Man - 25th Anniversary Edition (Galaga)

Galaga '88

Gaplus

Andromeda

Astro Fighter

Super Astro Fighter (DECO Cassette)

Galaxia

Cosmic Alien

Astro Wars

Destroyer (Cidelsa)

Galactica

Mad Alien

UniWar S

4 Fun in 1 (Galaxian)

Defend the Terra Attack on the Red UFO

Fantastic (Galaga conversion on Galaxian hardware)

Cosmo Gang the Video

Space Bomber

History


Arcade Video game published 35 years ago:

Gaplus (c) 1984 Namco.

The third game in Namco's classic "Galaxian" series, Gaplus picks up where 1981's "Galaga" left off. While maintaining the same classic 'look' of its predecessor, Gaplus's graphics are a definite improvement over those of "Galaga"; the game's increased color palette and subtle use of shading making the attacking aliens look rather more solid.

Another enhancement over its prequel is in the addition of a player-acquired 'Tractor Beam'. In "Galaga", only the enemies had access to the beam; enabling them to capture one of the player's 'Fighter' ships (the player then had to shoot the captor to release the Fighter). For the sequel, however, the player can now acquire the Tractor Beam. This is achieved by shooting one of the alien formation's 'generals' - a visibly more colourful alien than its comrades. The Tractor Beam will then activate for a limited time and any aliens the players captures (up to a maximum of six) will dock alongside the player's ship for enhanced firepower.

One final yet important addition is in the movement of the player's ship. In previous installments, the ship could only move left and right along the bottom of the screen; in Gaplus, however, the ship can now move UP the screen - although only to the halfway point. This is important as the alien's aggressive attack patterns will often see enemy craft swirling around the bottom of the play area.

As with "Galaga", Gaplus features regular 'Challenging Stages', with benign aliens swooping across the screen for the player to shoot as many times as possible, in order to try and spell out a word and earn extra bonus points.

- TECHNICAL -

Gaplus machines came in an upright dedicated cabinet that was similar in appearance to the cabinet used on the original "Galaga". These machines were black and were decorated with multi-color stripes, and sticker sideart with a realistically drawn scene from the game. There were several different marquees made. The American Gaplus marquee had a blue 'Gaplus' logo surrounded by a scary looking bee. The 'World' version had a green 'Gaplus' logo. Finally, many machines in the USA will be labeled "Galaga 3" on the marquee, but will have 'Gaplus' sideart and ROM chips (lots of lazy operators who didn't bother to install the whole name change kit, made these common). All machines are decorated with red T molding. The control panel has a single 8-way joystick mounted in the center, with 'Fire' buttons on either side. This panel was not decorated at all, it was simply black. The monitor bezel had a few game instructions on it, but was not overly decorated either. The game itself was displayed on a 19" Electrohome open frame monitor that was mounted vertically. This title uses the same wiring harness as "Galaga", and the two titles can be interchanged very easily. Many other games (such as "Dig Dug") use this same harness as well.

Game ID : GP

Main CPU : Motorola M6809 (@ 1.536 Mhz)
Sub CPU : Motorola M6809 (@ 1.536 Mhz)
Sound CPU : Motorola M6809 (@ 1.536 Mhz)
Sound Chips : Namco 8-channel WSG, discrete circuits (for the ship explosion sound)

Players : 2
Control : 8-way joystick
Buttons : 1 (FIRE)

- TRIVIA -

Gaplus was released in April 1984 in Japan.

This game is also known in the USA as "Galaga 3" (October 1984).

Dennis Gori holds the official record for this game with 1,393,200 points.

- TIPS AND TRICKS -

* These tips are all variations on the same theme :
1) On Parsec 1, allow all of the enemies to appear and fly into formation without shooting any of them. After the boss alien appears (the one that carries the tractor beam attachment), you'll see a pulsar similar to the ones the aliens appear from fly from just above the boss alien to the middle-right of the screen. Once it's gone by, shoot only the second alien from the left in the bottom row of the formation. A 'Special' flag will appear just below where it was; pick it up and you'll get a bonus ship.
2) In Parsec 1, go up to the very front and wait for all the bugs to come out. Then kill the 2nd bug from the left in the bottom row to make the special flag appear. Now, when the boss is coming down, move your ship and kill yourself by touching it. Don't touch the blaster head, just the boss. Your ship is turned into the blue one, and go get the special flag.

* Another Approach To The Same Situation : At the start of the Parsec 1, push straight up until you stop. DON'T shoot! Just sit there and let all the bugs form. Right after the last row of bugs get into formation, a star will shoot from the top left side of the screen to the bottom right. If you time this right you can get up to five shots on it. After about ten hits on the star (it will come out at random times during the game) it will transform your ship into a new ship that can shoot three shots on the screen (three shots vertically in a row) instead of just two.

* Easter Egg :
1) Enter service mode.
2) Keep Start and Button 1 pressed, move joystick Left until sound reaches 19. '(c) 1984 NAMCO' will appear on the screen.

* Secret message:
In the high score entry of Gaplus, you have to enter a name, age, and blood type. There are two codes which can be entered here, but cannot be entered in the international versions of the game.
Name: JNIWAR
Age: 28
Blood: OO
This makes a hidden message appear onscreen that will not disappear until the game is power-cycled. Here is the translation from Japanese:
"You have beaten Gaplus. In commemoration, we send you this message. Send a letter to Kojima at Namco, and he'll give something to the first 10 respondents. Sorry, but turn off the power now."

- SERIES -

1. Galaxian (1979)
2. Galaga (1981)
3. Gaplus (1984) : also known in the USA as "Galaga 3"
4. Galaga '88 (1987)
5. Galaxian 3 Theatre 6 - Project Dragoon (1990)
6. Galaxian 3 Theatre 6 J2 - Attack Of The Zolgear (1994)
7. Galaga Arrangement (1995) : part of "Namco Classics Collection Vol.1"
8. Galaga - Destination Earth (2000, GBA, PC CD-ROM and PlayStation)
9. Galaga Arrangement (2005, PSP) : part of "Namco Museum Battle Collection"
10. Galaga Remix (2007, Wii) : part of "Namco Museum Remix"
11. Galaga Legions (2008, XBLA)
12. Galaga Legions DX (2010, PSN, XBLA)
13. Galaga 3D Impact (2011, Nintendo 3DS) : part of "Pac-Man & Galaga Dimensions"

- STAFF -

Music by : Junko Ozawa

- PORTS -

NOTE : For ports released in the USA, please see the Midway "Gaplus" entry.

* CONSOLES:
[AU] Sony PlayStation (1996) "Namco Museum Vol.2 [Model SCES-00267]"
[JP] Sony PlayStation (feb.9, 1996) "Namco Museum Vol.2 [Model SLPS-00210]"
[EU] Sony PlayStation (nov.1996) "Namco Museum Vol.2 [Model SCES-00267]"
[JP] Nintendo Wii (dec.6, 2007) "Minna de Asobou! Namco Carnival" [Model RVL-RNWJ-JPN]"
[EU] Nintendo Wii (apr.18, 2008) "Namco Museum Remix [Model RVL-RN2P]"
[KO] Nintendo Wii (apr.26, 2008) "Namco Museum Remix [Model RVL-RNWK-KOR]"
[AU] Nintendo Wii (may.1, 2008) "Namco Museum Remix [Model RVL-RN2P]")
Nintendo Wii [Virtual Console Arcade] [JP] [AU] [EU] (mar.26, 2009)

* COMPUTERS:
[JP] NEC PC-9801 (dec.1985) "Gaplus" by Carry Lab
[EU] Commodore C64 (1989)
PC [MS Windows, CD-ROM] [JP] (dec.24, 1998) "Namco History Vol.4"

* OTHERS:
Let's! TV play classic series - Namco Nostalgia 2 [JP]

- CONTRIBUTE -

Edit this entry: https://www.arcade-history.com/?&page=detail&id=930&o=2

High scores

MAMESCORE records : 02/04/2017 13:01

sawys_________________________241.300
ballyballo____________________208.400
carey_________________________194.900
dark_kariya___________________193.000
gnu___________________________167.600
animexbox74___________________153.100
ezequiel______________________137.600
didyeah_______________________129.100
webmaster_____________________125.600
foxmulder______________________64.900
theberzerker___________________60.300
thegamer_______________________50.700
jgabmurer______________________40.800
hulkiii________________________22.300
didai__________________________11.300