Patent
1994-04-29
1998-03-31
Tung, Kee M.
395800, 395563, 395562, 395564, 395565, 395523, 395524, G06F 1200
Patent
active
057348740
ABSTRACT:
A central processing unit (CPU) is provided with a graphics execution unit (GRU), including a graphics status register (GSR), for executing a number of graphics operations in accordance to a graphics data scaling factor and an alignment address offset stored in the GSR, the graphics data having a number of graphics data formats. In one embodiment, the GRU is also used to execute a number of graphics data addition, subtraction, rounding, expansion, merge, alignment, multiplication, logical, compare, and pixel distance operations. The graphics data operations are categorized into a first and a second category, and the GRU concurrently executes one graphics operations from each category. Furthermore, under this embodiment, the integer execution unit of the CPU is also used to execute a number of graphics data edge handling and 3-D array addressing operations, while the load and store unit (LSU) of the CPU is also used to execute a number of graphics data load and store operations, including conditional store operations.
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MC 88110, User's Manual, 1991 pp. 1-4 to 1-17; 3-1 to 3-15; 5-1 to 5-25; 7-9; 7-14; 7-15; 7-19; 7-20; 7-21.
Kohn Leslie Dean
Van Hook Timothy J.
Yung Robert
Sun Microsystems Inc.
Tung Kee M.
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