| 摘要 |
FIELD: video games. SUBSTANCE: device has main unit and peripheral memory unit which is mounted on main unit as plug-in assembly. Main unit has video data memory unit which stores graphic images of symbols to be displayed. Program memory unit of peripheral memory unit contains data about object to be shown on raster display, i.e. data about color palette, horizontal position, object size, size label and so on. Such data are load preliminary. Data about object to be displayed during next period of vertical scanning are read from program memory unit in order to load object characteristics into memory unit. Range presence decision circuit judges presence of object in range according data about vertical position, size and size label data. EFFECT: increased maximal number of objects to be displayed in vertical direction without decrease in number of objects displayed in horizontal direction. 11 cl, 3 tbl, 25 dwgl |
