Method and apparatus facilitating use of a hard disk drive in a computer system having suspend/resume capability
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United States of America Patent
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Feb 28, 1995
Issued Date -
N/A
app pub date -
Oct 26, 1993
filing date -
May 17, 1991
priority date (Note) -
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Abstract
A computer system has a processing unit with suspend/resume capability, a memory, and a hard disk drive. In response to a first command from the processor, the hard disk drive sends its status to the processor and the processor stores it in the memory. In response to a second command from the processor, the hard disk accepts from the processor the status retrieved by the processor from the memory, and restores itself to this status. In an alternative embodiment, the hard disk drive response to the first command by storing its status on its own hard disk, and responds to the second command by restoring this status from the hard disk. In each case, an output line from the hard disk used to control a light emitting diode is also selectively used to create an interrupt to the processor which facilitates the systems entry into the suspend mode.
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