Display generator circuitry for personal computer system

Details Display generator circuitry for personal computer system Display generator circuitry for personal computer system

G - Physics

06

F

354/43, 354/236.

G06F 3/14 (2006.01) A63F 13/00 (2006.01) G09G 5/39 (2006.01)

Patent

CA 1283980

Abstract: A method of generating a display for a video game and a home computer system having a television-type display device, a microprocessor, a general RAM memory, an address bus, a data bus, and utilizing direct memory access, comprises the steps of storing display information in the memory in bit map format; separating display information in the bit map storage into contiguous blocks representative of sprite object data and of bitplanes, where sprite object data defines a complete movable display object, and bitplane data defines a playfield, whereof a playfield is formed of a composite of a plurality of bitplanes; compositing a playfield by sequentially adding data from a plurality of bitplanes selected for combination; and sending the sprite inform- ation and the sequential bitplane data to the display device.

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