“Enforce In-order Execution of I/O”的意思、由来-开放百科全书

词条

Enforce In-order Execution of I/O

释义

References
External links

Enforce In-order Execution of I/O, or EIEIO, is a machine code instruction used on the PowerPC computer processor which prevents one memory or I/O operation from starting until the previous memory or I/O operation completed. This instruction is needed as I/O controllers on the system bus require that accesses follow a particular order, while the CPU reorders accesses to optimize memory bandwidth usage.

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References

1. ^{{cite web|url=http://pic.dhe.ibm.com/infocenter/aix/v6r1/topic/com.ibm.aix.aixassem/doc/alangref/idalangref_eieio_instrs.htm |title=Archived copy |accessdate=2013-06-04 |deadurl=yes |archiveurl=https://archive.is/20130629113734/http://pic.dhe.ibm.com/infocenter/aix/v6r1/topic/com.ibm.aix.aixassem/doc/alangref/idalangref_eieio_instrs.htm |archivedate=2013-06-29 }}

External links

PowerPC Architecture Book version 2.2

1 : IBM computer hardware

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