Method and apparatus for high bandwidth shared memory
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United States of America Patent
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Jul 5, 1988
Grant Date -
N/A
app pub date -
Feb 14, 1986
filing date -
Feb 14, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for providing high speed communications with a shared memory from both a processing control unit and a plurality of auxiliary processing devices employs a video random access memory. The processing control unit or units require random access of the memory and are operatively connected to a random access port of the video random access memory. Each auxiliary processing device is operatively connected for data transfer in a burst mode to a serial access port of the video random access memory. The method and apparatus control transfer of data to and from the serial and random access ports for effecting high speed communications at both I/O access ports of the memory. Data communication at the serial access port is in a bit serial/word parallel burst mode and occurs in one CPU cycle. The memory operates like a dynamic RAM from the random access port.
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