Patent
1997-05-22
1998-07-14
Chin, Gary
395842, G06F 1328
Patent
active
057817634
ABSTRACT:
A mixed-endian computer system enhanced to manage I/O DMA without a software DMA performance penalty. A mixed-endian computer system can change endian mode on a task by task basis if necessary. The mixed-endian system, as enhanced, performs one of two well-defined DMA operations based on control bits either in the DMA control register or in a bit vector associated with each page of processor storage. This invention also describes means for treating I/O registers as if they were of the endian of the executing processor, instead of the more typical need to have the register operate in a particular endian.
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Multiplexed Buses: The Endian Wars Continue.
Beukema Bruce Leroy
Delp Gary Scott
Loen Larry Wayne
Moertl Daniel Frank
Trombley Michael R.
Chin Gary
Fiul Dan
Gamon Owen J.
International Business Machines - Corporation
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