System control unit, system control method, and computer readable medium storing system control program
AssigneeNEC Corporation
InventorTAKAYUKI ITO
Life of this patent
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Abstract
A system control unit includes a first IO (Input/Output) node having a primary BIO (Basic Input/Output) preferentially used, and a second IO node having a secondary BIO used as a preparatory of the primary BIO. A first address space allocated to the first IO node, and a second address space allocated to the second IO node are different from each other. The system control unit performs an information changing process that accesses the first IO node in the first address space to change information in the primary BIO, and accesses the second IO node in the second address space to change information in the secondary BIO, thus bringing the information in the primary BIO and the information in the secondary BIO into agreement.
Claims15
A system control unit comprising:
- a first IO (Input/Output) node having a primary BIO (Basic Input/Output) preferentially used, a first address space being allocated to said first IO node;
- a second IO node having a secondary BIO used as a preparatory of the primary BIO, a second address space being allocated to said second IO node are different from each other;
- and
- an information changing means that accesses said first IO node in said first address space to change information in said primary BIO, and accesses said second IO node in said second address space to change information in said secondary BIO, thus bringing the information in said primary BIO and the information in the said secondary BIO into agreement.
A system control method performed in a system control unit comprising a first IO (Input/Output) node having a primary BIO (Basic Input/Output) preferentially used, and a second IO node having a secondary BIO used as a preparatory of said primary BIO, said system control method comprising:
- allocating a first address space to said first IO node;
- allocating a second address space to said second IO node are different from each other;
- accessing said first IO node in said first address space;
- changing information in said primary BIO;
- accessing said second IO node in said second address space;
- and
- changing information in said secondary BIO to bring the information in said primary BIO and the information in said secondary BIO into agreement.
A computer readable medium storing a system control program executed in a system control unit comprising a first IO (Input/Output) node having a primary BIO (Basic Input/Output) preferentially used, and a second IO node having a secondary BIO used as a preparatory of said primary BIO,
- wherein a first address space allocated to said first IO node, and a second address space allocated to said second IO node are different from each other,
- wherein the system control program instructs the system control unit to perform an information changing processing that accesses said first IO node in said first address space to change information in said primary BIO, and accesses said second IO node in said second address space to change information in said secondary BIO, and
- wherein the information in said primary BIO and the information in said secondary BIO are brought into agreement.
Dependencies are inferred from the claim text.