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- Millicode abstract "In computer architecture, Millicode is a higher level of microcode used to implement the instruction set of a computer. Millicode runs on top of the microcoded instructions and uses those instructions to implement more complex instructions visible to the user of the system.IBM invented both the concept and the term Millicode for the System/390 9672-G4 processor in 1997.Implementation of Millicode requires a special processor mode called millimode which provides its own set of registers, and possibly its own special instructions which are not visible to the user.The following are cited as advantages of Millicode: More complex instructions can easily be constructed from several millicode instructions. Construction of a compatible line of computer models with different performance is simplified. Millicode instructions can bypass CPU cache to improve performance. Instructions can update multiple storage locations without concern for being interrupted. Millicode can execute instructions at a higher privilege level without involving the operating system. Millicode can provide a complex instruction as if it were a subroutine, making user code smaller.↑ 1.0 1.1 1.2".
- Millicode wikiPageID "38329630".
- Millicode wikiPageRevisionID "592500799".
- Millicode hasPhotoCollection Millicode.
- Millicode subject Category:Central_processing_unit.
- Millicode subject Category:Instruction_processing.
- Millicode subject Category:Instruction_set_architectures.
- Millicode subject Category:Microprocessors.
- Millicode comment "In computer architecture, Millicode is a higher level of microcode used to implement the instruction set of a computer.".
- Millicode label "Millicode".
- Millicode sameAs m.0q3yvd9.
- Millicode sameAs Q16155681.
- Millicode sameAs Q16155681.
- Millicode wasDerivedFrom Millicode?oldid=592500799.
- Millicode isPrimaryTopicOf Millicode.