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Defense Command (set 1)

 
Arcade
Arcade
Platform:

Defense Command (set 1)

| 1980
Genre:
Style:
Theme:
Description:


Notes:
Release type:
Developer: bootleg
Controls/Input Device: Control(joy8way), Buttons(5)
Number of Players: 1
Rating:
Creator:
More Creator:
More Coder/Software:
Publisher:
Manufacturer:
Genre:
License from/Copyright:
Graphics/Artwork:
Music:
SoundFX:
System/ConversionClass:
SoundMix: Mono
Coder/Software:
Game Awards Nominations:
Game Awards Won:
Title a.k.a.:
Slogans:
Avg. Playtime:
Mameinfo.dat entry:
0.37b10 [Yochizo]


WIP:

- 0.147u2: hap fixed clone Omega Fighter Special. The game fails to boot or finish post. After showing bad rom errors, the game resets.

- 0.147u1: Fixed maincpu rom loading.

- 0.122u7: Fixed gfx1/2/3/4/5 rom loading.

- 0.89u3: Changed Z80 CPU2 clock speed to 5MHz.

- 0.37b10: Yochizo added 'Omega Fighter' (UPL 1989) and clone Omega Fighter Special.

- 21st November 2000: Yochizo fixed some graphics bugs in the Omega Fighter / Atomic Robo-kid driver.

- 8th November 2000: Yochizo sent in a driver for Omega Fighter and Atomic Robo-kid.

- 25th April 1999: Dumped Omega Fighter Special.


LEVELS: 8 (restarts once)


Other Emulators:

* FB Alpha

* JFF

* Raine


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Romset: 2016 kb / 8 files / 457.8 zip


Credits Mameinfo and Mametesters Project Robert J. Rabgno et al.
History.dat entry:
Defense Command (c) 1981 Artic International.

- TECHNICAL -

Main CPU : Motorola M6809 (@ 1 Mhz)
Sound CPU : M6808 (@ 894.75 Khz)
Sound Chips : DAC

Screen orientation : Horizontal
Video resolution : 294 x 239 pixels
Screen refresh : 60.00 Hz
Palette colors : 16

Players : 2
Control : 2-way joystick (vertical)
Buttons : 5

- TRIVIA -

This bootleg of "Defender" resulted in a far-reaching legal decision in US copyright law. Williams sued the distributor of the game, Artic International, for copyright infringements of 1) the game's ROM code and 2) the 'look-and-feel' of the attract and play modes.

Artic never contested that the 'Defense Command' ROM code had been lifted from the Williams "Defender" game; over 85% of the code was identical in both games. However, Artic argued that ROM chips should be considered as 'utilitarian objects', much like common knobs and gears which are beyond the scope of copyright law. Artic had used this argument unsuccessfully in a similar case against Midway Manufacturing.

The court reaffirmed the previous legal decision against Artic. Under US copyright law, intellectual property can be protected if it is made permanent in some way (known in legal terms as 'fixation'). Computer code stored in ROM chips met this requirement. Artic lost its case against Williams.

The Midway/Williams decisions against Artic set an important legal precedent : compiled computer code was protected under copyright law regardless of the medium of storage.

- CONTRIBUTE -

Edit this entry: http://www.arcade-history.com/?&page=detail&id=615&o=2


Licensed from Alexis Bousiges under a CC Attribution 3.0 License
cheat.dat entry:
00000000 A037 00000099 FFFFFFFF Infinite Credits
20800000 E8A4 00000000 FFFFFFFF Invincibility
20810000 E8AB 00000020 FFFFFFFF Invincibility (2/2)
00000000 A0BA 0000000A FFFFFFFF Always start and end with 10 defendees You will never go onto space with this cheat but the defendees will disappear as they are captured or destroyed.
60000000 0000 00000000 00000000
00000000 A1A1 00000005 FFFFFFFF Infinite Lives PL1
00000000 A1A3 00000004 FFFFFFFF Infinite Smart Bombs PL1
00000701 A1A2 00000063 FFFFFFFF Select Current Attack Wave PL1
00000703 A1A2 00000063 FFFFFFFF Select Next Attack Wave PL1
60000000 0000 00000000 00000000
00000000 A1DE 00000005 FFFFFFFF Infinite Lives PL2
00000000 A1E0 00000004 FFFFFFFF Infinite Smart Bombs PL2
00000701 A1DF 00000063 FFFFFFFF Select Current Attack Wave PL2
00000703 A1DF 00000063 FFFFFFFF Select Next Attack Wave PL2

Credit Pugsy's MAME Cheat file
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