Difference between revisions of "Microcode"
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* [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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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.
