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The Namco Galaxian was an 8-bit arcade game system board, which was first used by Namco for ''Galaxian'' in 1979; it was the first board from the company to use the Zilog Z80 microprocessor (as opposed to the older Intel 8080). It used specialized graphics hardware supporting RGB color, multi-colored sprites and tilemap backgrounds.〔https://github.com/mamedev/mame/tree/master/src/mame/video/galaxian.c〕 Its introduction of colorful tilemap graphics distinguished it from the Taito 8080 monochrome framebuffer system of ''Space Invaders''.〔http://books.google.co.uk/books?id=oK3D4i5ldKgC&pg=PA173〕 Namco Galaxian also introduced a sprite line buffer system, which was adopted by later systems such as the Namco Pac-Man, Midway's ''Tron'' hardware〔 and Sega Z80. ==Namco Galaxian specifications== *Main CPU microprocessor: Zilog Z80 @ 3.072 MHz (8-bit & 16-bit instructions @ 450,000 instructions per second)〔http://www.drolez.com/retro/〕 *Sound chips: Namco custom sound hardware〔https://github.com/mamedev/mame/tree/master/src/mame/drivers/galaxian.c〕 * *Audio channels: One programmable 4/8-bit waveform channel, three 4-bit square wave channels, two 17-bit noise channels, one modulated noise pulse channel〔 *Graphics chipset: Namco custom video hardware〔〔 *Display resolution: 256x224〔http://www.system16.com/hardware.php?id=513〕 to 384x264〔https://github.com/mamedev/mame/tree/master/src/mame/includes/galaxian.h〕 (horizontal), 224x256 to 264x384 (vertical) *Refresh rate: 60.60606 Hz (V-sync)〔 *Color model: RGB〔http://www.arcade-museum.com/game_detail.php?game_id=7885〕 * *Color palette: 224〔 * *Colors on screen: 32〔 *Background planes: * *Tilemap plane: 8x8 tile sizes,〔 vertical scrolling〔 * *Bitmap plane: Star generator, vertical scrolling〔 *Sprite capabilities: Line buffer,〔http://www.vasulka.org/archive/Writings/VideogameImpact.pdf#page=25〕 8x8 to 16x16 sizes, 4 colors per sprite,〔 15 sprites (7 main sprites, 7 shells, 1 missile) per scanline, 240 sprite pixels per scanline, sprite flipping,〔 sprite animation〔http://www.cs.columbia.edu/~%20sedwards/classes/2011/4840/reports/Galaxian.pdf〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Namco Galaxian」の詳細全文を読む スポンサード リンク
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