Raster scan video controller with programmable prioritized sharing of display memory between update and display processes and programmable memory access termination
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United States of America Patent
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-
Nov 1, 1988
Grant Date -
N/A
app pub date -
Dec 30, 1985
filing date -
Dec 30, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a bit-mapped display system, a logical subsystem for programmable sharing of access to a memory in a computer system among a plurality of system resources wherein various modes of operation are supported by the logic and are programmably selected by the user. The use of display memory is controlled between updating and display accesses to prevent breakup of the video image while said image is being changed.
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