Input/output control technique utilizing multilevel memory structure for processor and I/O communication
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United States of America Patent
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Nov 8, 1988
Grant Date -
N/A
app pub date -
Sep 19, 1986
filing date -
Sep 19, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multilevel communication structure controls input/output (I/O) data transfers and control functions in a computer system. Communication is achieved through shared memory structures in main memory commonly connected to each processor and each I/O adapter in the system. The levels of the communication structure are for communicating information between adapters or processors and processors, for communicating information relative to I/O control functions of an I/O device, and for specifying I/O functional operations. The information contained in the memory structures may be directly interpreted by sequencers of the I/O adapters, to achieve the I/O data transfers.
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