Varieties of Register
The hardware registers inside a central processing unit (CPU) are called processor registers.
Strobe registers have the same interface as normal hardware registers, but instead of storing data, they trigger an action each time they are written to (or, in rare cases, read from). They are a means of signaling.
Registers are normally measured by the number of bits they can hold, for example, an "8-bit register" or a "32-bit register".
Designers can implement registers in a wide variety of ways, including:
- register files
- standard SRAM
- individual flip-flops
- high-speed core memory
In addition to the "programmer-visible" registers that can be read and written with software, many chips have internal microarchitectural registers that are used for state machines and pipelining; for example, registered memory.
Read more about this topic: Hardware Register
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