Difference between revisions of "Microcode"

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(Created page with "{{Glossary |name=Microcode |abbr=Microcode |desc=Data used as part of instruction decode on a microcoded microprocessor to generate one or more micro-operations from eac...")
 
 
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==References==
 
==References==
 
* [https://github.com/open-power/hcode Source code for POWER9 power management cores]
 
* [https://github.com/open-power/hcode Source code for POWER9 power management cores]
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[[Category:Firmware]]

Latest revision as of 14:47, 19 December 2017

Microcode (Microcode): Data used as part of instruction decode on a microcoded microprocessor to generate one or more micro-operations from each decoded opcode.  

POWER9 CPUs do not have any microcode; all architectural opcodes are hardcoded. There are some auxillary microprocessors on-die to handle power management functions (the CME, SGPE and PGPE, as well as the OCC); the code which runs on these is open-source.

References