Synchronous input/output initialization exchange sequences
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United States of America Patent
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app pub date -
Oct 1, 2015
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Oct 1, 2015
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Abstract
Aspects include for performing an initialization sequence by a first device to execute synchronous input/output (I/O) commands across a synchronous I/O link. The initialization sequence includes posting, by the first device, a first acknowledgement in response to a register area corresponding to a second device being updated with first information according to a first synchronization sequence, the first information comprising a worldwide node name of the second device and posting, by the first device, a second acknowledgement in response the register area being updated with second information according to a second synchronization sequence, the second information comprising mailbox information. The initialization sequence also includes performing, by the first device, a third synchronization sequence to provide a worldwide node name of the first device; and performing, by the first device, a fourth synchronization sequence to provide a status area address.
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