Difference between revisions of "Galaxian-based hardware"
From Sega Retro
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'''Galaxian-based hardware''' was used for several [[Sega]] licensed [[arcade]] games in the early 1980s, based on [[Namco]]'s ''[[Galaxian]]'' arcade hardware, which debuted in 1979.{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/galaxian.cpp Namco Galaxian (MAME)]}} | '''Galaxian-based hardware''' was used for several [[Sega]] licensed [[arcade]] games in the early 1980s, based on [[Namco]]'s ''[[Galaxian]]'' arcade hardware, which debuted in 1979.{{ref|[https://github.com/mamedev/mame/blob/master/src/mame/drivers/galaxian.cpp Namco Galaxian (MAME)]}} | ||
| − | Sega's hardware variants were based on the arcade hardware used by the companies it licensed from, such as [[Konami]], [[Nihon Bussan]], and [[Alpha Denshi]], which all used Galaxian-based hardware at the time. Several modifications were made to the hardware, with ''[[Super Cobra]]'' (and its predecessor ''[[wikipedia:Scramble|Scramble]]'') adding side-scrolling capabilities, and ''[[Jump Bug]]'' adding parallax scrolling capabilities. | + | Sega's hardware variants were based on the arcade hardware used by the companies it licensed from, such as [[Konami]], [[Nihon Bussan]], and [[Alpha Denshi]], which all used Galaxian-based hardware at the time. Several modifications were made to the hardware, with ''[[Super Cobra]]'' (and its predecessor ''[[wikipedia:Scramble|Scramble]]'') adding side-scrolling capabilities, and ''[[Jump Bug]]'' adding multi-directional scrolling and parallax scrolling capabilities. |
==Technical Specifications== | ==Technical Specifications== | ||
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* Sound chip: AY-3-8910 @ 1.78975 MHz | * Sound chip: AY-3-8910 @ 1.78975 MHz | ||
| − | * Background planes: | + | * Background planes: Multi-directional scrolling, parallax scrolling{{ref|1=[http://books.google.co.uk/books?id=lB4PAwAAQBAJ&pg=PA181 ''Games vs. Hardware. The History of PC video games: The 80's'']}} |
==List of Games== | ==List of Games== | ||
Revision as of 23:23, 3 October 2016
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| Galaxian-based hardware | |||||
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| Manufacturer: Namco (variants by Sega) | |||||
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Galaxian-based hardware was used for several Sega licensed arcade games in the early 1980s, based on Namco's Galaxian arcade hardware, which debuted in 1979.[1]
Sega's hardware variants were based on the arcade hardware used by the companies it licensed from, such as Konami, Nihon Bussan, and Alpha Denshi, which all used Galaxian-based hardware at the time. Several modifications were made to the hardware, with Super Cobra (and its predecessor Scramble) adding side-scrolling capabilities, and Jump Bug adding multi-directional scrolling and parallax scrolling capabilities.
Technical Specifications
The technical specifications for this hardware include:[1][2][3][4]
- Main CPU: Zilog Z80 @ 3.072 MHz (8-bit & 16-bit instructions @ 0.45 MIPS)
- Sound hardware: Namco Galaxian sound hardware (one programmable 4/8-bit waveform channel, three 4-bit square wave channels, two 17-bit noise channels, one modulated noise pulse channel)
- GPU chipset: Namco Galaxian video hardware
- Display resolution: 256×224 (horizontal), 224×256 (vertical)
- Overscan resolution: 384×264 (horizontal), 264×384 (vertical)
- Refresh rate: 60.60606 Hz (V-sync)
- Color model: RGB
- Background planes:
- Sprite plane: Line buffer, 8×8 to 16×16 sizes, 4 colors per sprite, 15 sprites per scanline, 240 texels per scanline, sprite flipping, sprite animation[6]
Modifications
Super Cobra (and its predecessor Scramble) added the following upgrade to the hardware in early 1981:
- Background planes: Side-scrolling
Jump Bug made the following modifications to the hardware later in 1981:
- Sound chip: AY-3-8910 @ 1.78975 MHz
- Background planes: Multi-directional scrolling, parallax scrolling[7]
List of Games
Sega licensed arcade games that ran on this hardware include:[1]
- Moon Cresta (1980)
- Frogger (1981)
- Jump Bug (1981)
- Super Cobra (1981)
- Turpin (1981)
References
- ↑ 1.0 1.1 1.2 Namco Galaxian (MAME)
- ↑ Namco Galaxian video hardware (MAME)
- ↑ Sega Z80 Based Hardware (System 16)
- ↑ Namco Galaxian Hardware (System 16)
- ↑ Galaxian (Arcade Museum)
- ↑ Galaxian CSEE 4840 Embedded System Design (University of Columbia)
- ↑ Games vs. Hardware. The History of PC video games: The 80's
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