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Heavy Unit (World)

  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. Categories
  12. MAMEinfo
  13. History
  14. High scores
Download hvyunit.zip (1.69 MB)
Snapshot

Game infos

Description Heavy Unit (World)
Name hvyunit
Manufacturer Kaneko / Taito
Year 1988
Runnable yes
System arcade /
Number of players 2P alt
Added to MAME .129u5
Romset size 1.69 MB
Romset file 13 files
Romset zip 568 B
Language English
Evaluation 60 to 70 (Passable)
Genre Shooter

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 yes
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 0 no 256 224 58

Dipswitchs

Roms list

console name bios size crc md5 merge sha1 region offset status optional
arcade b73_01.1b 65536 3a8a4489 a01d7300015f90ce6dd571ad93e7a58270a99e47 gfx1 140000 good no
arcade b73_02.1c 65536 025c536c 075e95cc39e792049ae656404e7f7440df064391 gfx1 160000 good no
arcade b73_03.1d 65536 ec6020cf 2973aa2dc3deb2f27c9f1bad07a7664bad95b3f2 gfx1 180000 good no
arcade b73_04.1f 65536 f7badbb2 d824ab4aba94d7ca02401f4f6f34213143c282ec gfx1 1a0000 good no
arcade b73_05.1h 65536 b8e829d2 31102358500d7b58173d4f18647decf5db744416 gfx1 1c0000 good no
arcade b73_06.2b 65536 a98e4aea 560fef03ad818894c9c7578c6282d55b646e8129 gfx1 120000 good no
arcade b73_07.2c 65536 5cffa42c 687e047345039479b35d5099e56dbc1d57284ed9 gfx1 100000 good no
arcade b73_08.2f 524288 f83dd808 09d5f1e86fad3a0d2d3ac1845103d3f2833c6793 gfx1 0 good no
arcade b73_09.2p 524288 537c647f 941c0f4e251bc68e53d62e70b033a3a6c145bb7e gfx2 0 good no
arcade b73_10.5c 131072 ca52210f 346951962aa5bbad641117dbd66f035dddc7c0bf master 0 good no
arcade b73_11.5p 65536 cb451695 116fd59f96a54c22fae65eea9ee5e58cb9ce5074 slave 0 good no
arcade b73_12.7e 65536 d1d24fab ed0312535d0b136d79aa885b9e6eea19ebde6409 soundcpu 0 good no
arcade mermaid.bin 3584 88c5dd27 5043fed7fd192891be7e4096f2c5daaae1538bc4 mermaid 0 good no

Chips list

name tag type clock
I80C51 mermaid cpu 6000000
Speaker mono audio
YM2203 ymsnd audio 3000000
Z80 soundcpu cpu 6000000

Categories

MAMEinfo

0.129u6 [Tomasz Slanina, Corrado Tomaselli]

0.129u5 [Tomasz Slanina, Corrado Tomaselli]


Bugs:

- All set in hvyunit.c: Enemies stop appearing during Stage 5-2. DRG (ID 04172)


WIP:

- 0.162: Osso added save state support to Heavy Unit and moved driver to configured banking.

- 0.149: Modernized Kaneko Pandora device [Osso].

- 0.141u4: Hurray Banana, Tormod, hotaru, Dna Disturber, F. Marsaud, N. Francfort, Smitdogg and The Dumping Union added clone 'Heavy Unit -U.S.A. Version- (US)'. Renamed (hvyunito) to (hvyunitjo).

- 15th March 2011: Smitdogg - We got Heavy Unit U.S.A. Version. It seems pretty rare, I've never seen it before. From the rom labels it seems to have some pretty big changes. Lots of them are labeled differently from current sets in MAME, not just 2 as you might expect. I don't know what all the differences are yet.

- 0.141u1: Brian Troha and Guru corrected coin mode and coinage for Heavy Unit (World).

- 0.141: Phil Bennett, Dr. Decapitator and Andrew Gardner fixed Heavy Unit - Game now playable. Hooked up KANEKO MERMAID protection MCU and removed obsolete simulation code. Also updated the driver to use a state class. Added I80C51 (6MHz) CPU4 and rom mermaid.bin (3584 bytes). Changed 'Unknown' dipswitches to 'Unused'.

- 28th December 2010: Andrew Gardner - A few months ago, Phil Bennett took it upon himself to tackle the Kaneko MCUs Dr. Decapitator photographed and gave to MAMEDev. I'm as good as the next guy at typing in bits, so I offered to help. The doc's images were nice, allowing us to type in all the data in a short amount of time. Phil figured out how to convert the bits to bytes, and quickly got DJ Boy to talk to the newly-typed-in (dumped) MCU. Often times, looking at the disassembly of a ROM gives a person a pretty good sense of the quality of what we have typed. Things were looking good, but there were a few errors. A little bit twiddling fixed these errors, but looking back at the original die images made us very concerned - sometimes the disassembly made Phil sure a bit should be a 1, but the die image was subtly blurry, and we both typed in a 0. Because of this, we asked for another set of images of the DJ Boy MCU from the Doc, and he very graciously gave us a higher magnification level. This new set of images was so good, it was no problem typing the whole ROM in again, and Phil hooked it up quickly and effectively. We had the same situation going on with the MCU in Heavy Unit. The doc's images were good, but not amazing. We typed them in, but asked for higher magnification images, knowing there may be some issues. Just the other day, the Doc sent us those higher resolution images. Phil typed in the images (I didn't finish my typing), fixed a couple of bits we had improperly typed with the lower-resolution images, and hooked up the MCU. The results should show up in the next release of MAME. In the meantime, David Haywood was kind enough to test out the emulation and record a video of MAME running the game Heavy Unit.

- 28th December 2010: Smitdogg - Heavy Unit MCU hooked up/working. Thanks to Phil Bennett, Dr. Decapitator & Andrew Gardner.

- 0.135u3: Fabio Priuli converted Kaneko Pandora sprite chip to be a MAME device and updated drivers accordingly.

- 0.131u4: Brian Troha updated dipswitches and added dipswitch settings list in the Heavy Unit driver. Added dipswitches 'Cabinet' and 'Allow Continue'.

- 20th May 2009: Guru - The 80C51 MCU from Heavy Unit has just been decapped. This is the ROM image, you can clearly see a large part of the lower section of the ROM is unused.

- 0.131u2: Angelo Salese fixed access violation in Heavy Unit.

- 0.130u1: Mamesick fixed Heavy Unit main CPU bankswitch. This fixes the enemy appearing in attract mode.

- 0.129u6: Various improvements to Heavy Unit [Angelo Salese, Tomasz Slanina, David Haywood]: Added a very preliminary simulation of the protection, just enough to get the game to boot, not make it playable. Corrected CPU communication, IRQ/NMI generation etc. Fixed some video emulation issues (added tilemap scroll etc.). Corrected GFX rom loading (at least for the graphics used in attract mode). Changed clone (set 2) to parent 'Heavy Unit (World)', (set 1) to clone 'Heavy Unit (Japan, Older)' and (set 3) to 'Heavy Unit (Japan, Newer)'. Renamed (hvyunit) to (hvyunito), (hvyunita) to (hvyunit) and (hvyunitb) to (hvyunitj).

- 27th February 2009: Angelo Salese - Started to look at the protection in Heavy Unit and did some video tweakery with Haze (still some scrolling issues, we'll hopefully fix that shortly). Notice that I don't promise anything about beating the protection in there, if this game was never properly emulated there's a reason...

- 0.129u5: Tomasz Slanina and Corrado Tomaselli added 'Heavy Unit (set 1)' (Kaneko / Taito 1988) and clones (set 2) and (set 3).

- 20th February 2009: Corrado Tomaselli dumped Heavy Unit (set 2) and (set 3).

- 0.117: David Haywood moved "Pandora" sprite chip implementation to its own file. Updated Heavy Unit to use this new generic implementation.

- 21st February 2006: Tomasz Slanina - Heavy unit = heavy protection. Just a skeleton driver.

- 17th October 2003: Tomasz Slanina - Sprites (game logo is made of sprites) and text layer is done. TODO: bg layer, colors and sound.

- 20th July 2003: Guru - Received Heavy Unit from R. Belmont.


LEVELS: 6


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History


Arcade Video game published 31 years ago:

Heavy Unit (c) 1988 Taito Corp.

A very rare and little known shooter from Kaneko with nice chunky sprites and very imaginative level design, also the music and sound effects are surely on a par with "R*Type".

- TRIVIA -

Developed by Kaneko.

Released in November 1988 in Japan.

- STAFF -

Software Section: S. Igarashi (TO-Y), Y. Yamauchi (UAY), T. Katoh
Art Design Section: K. Matsuoka, T. Tajima, H. Ichikawa, A. Funatsu, T. Okimoto, A. Yazaki
Music & Sound: T. Watanabe, S. Aizu
Hardware Section: H. Nagayoshi, H. Mikami
Management: H. Kikuchi
Director: H. Kaneko

- PORTS -

* CONSOLES:
NEC PC-Engine (Dec.1989)
Sega Mega Drive (Dec.1989)
Sega Mega Drive (Dec.1990, "Heavy Unit - Mega Drive Special")

- CONTRIBUTE -

Edit this entry: https://www.arcade-history.com/?&page=detail&id=4735&o=2

High scores

MAMESCORE records : 02/04/2017 13:01

neoeki________________________305.950
majygool______________________220.450