Video display system with multicolor graphics selection
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United States of America Patent
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-
Sep 11, 1984
Issued Date -
N/A
app pub date -
May 16, 1983
filing date -
Jan 8, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A microprocessor based data processing system including a microprocessor, a memory unit, and a display unit is provided with a programmable graphics generator that transfers graphics information from the memory unit to the display unit in response to and control of a set of display instructions also stored in the memory unit. The graphics generator includes a first addressing unit for sequentially accessing the display instructions from the memory unit; a control unit for receiving, storing and decoding such instruction and for issuing supervisory and control signals in response to the binary state of each instruction; a second addressing unit for accessing graphics information from the memory unit in response to the supervisory signals from the control unit; and a third addressing unit for accessing movable object graphics stored in the memory unit.
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