Lock converting bus-to-bus interface system
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United States of America Patent
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Feb 11, 1992
Issued Date -
N/A
app pub date -
Jun 17, 1991
filing date -
Apr 7, 1989
priority date (Note) -
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Abstract
A bus-to-bus interface circuit maps a portion of the address space of each bus to a corresponding portion of the address space of the other bus. When a computer processor one one bus attempts to read or write access a mapped address, the bus interface circuit obtains control of the other bus and read or write accesses a corresponding address on the other bus. The interface circuit permits a bus master on the first bus to lock both buses so that it may perform several bus-to-bus data read or write operations without having to re-arbitrate for control of either bus after each operation.
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