Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output addressing
Patent
1997-06-05
1999-10-19
Palys, Joseph E.
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output addressing
710 6, 710 36, 710 48, 710 52, 709300, 713200, 395701, 395712, 380 4, 380 25, G06F 1300
Patent
active
059681365
ABSTRACT:
A method for securely accessing a peripheral device at an absolute address is disclosed. A computer program is executed to request from an operating system a memory access object including a procedure executable to address the peripheral device at the absolute address. An operating system procedure is executed to provide the memory access object to the computer program if a value associated with the computer program indicates that the computer program is trusted to perform absolute addressing. If the operating system procedure provides the memory access object to the computer program, the computer program is executed invoke the memory access object procedure to address the peripheral device at the absolute address.
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Bohman, II David E.
Saulpaugh Thomas
Hossain Abu
Palys Joseph E.
Sun Microsystems Inc.
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