Port adapter system including a controller for switching channels upon encountering a wait period of data transfer
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United States of America Patent
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-
Dec 3, 1991
Issued Date -
N/A
app pub date -
Mar 23, 1989
filing date -
Apr 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A port adapter for an input/output system for a large data processing system. The port adapter is coupled to an I/O processor of that system and also to main memory of the system so that when the port adapter is selected by a system interrupt message from the I/O processor, it can begin and carry on its data transmission between a selected peripheral device and main memory without further assistance. The port adapter has two peripheral interface transceivers so that it can concurrently control data transfers to at least two peripheral devices.
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