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, which change the CPU is a well-defined way. There is a finite and numbered set of instructions. Instructions may have operands, such as registers to operate on, or constants to use, and these … non-trivial. The instruction decoder will map an instruction number to a particular bit of hardware to implement the actual instruction. Let's assume a new CPU design, not compatible with an existing …
answered Mar 15 '17 by MSalters
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reason to do clocking in-band is to eliminate the variation between pins. As for the internal clock, a modern CPU may not even have a fixed number (!). Commonly, each core of a multi-core CPU can … have its own clock, but an unneeded core may have its clock shut down to reduce energy consumption. Of course, with those multiple cores, there has to be yet another bus to connect the cores on a CPU
answered Dec 19 '16 by MSalters