Initial program load
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United States of America Patent
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Jun 27, 2000
Grant Date -
N/A
app pub date -
May 22, 1998
filing date -
Jun 19, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A computer system comprises a main memory and a battery-backed memory (BRAM) for storing configuration information for use in initial program load (IPL). A read-only memory stores a master version of the configuration information. When the system is powered on, an IPL sequence is performed which checks the BRAM, and then, if the contents of the BRAM are valid, copies the control information from the BRAM into the main memory. Alternatively, if the contents of the BRAM are invalid, the IPL sequence copies the master version of the control information from the read-only memory into the BRAM and also into the main memory.
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