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Typical uses of hardware registers include ''configuration'' and start-up of certain features, especially during initialization, ''buffer storage'' e.g. video memory for Graphics Card s, and ''status reporting'' such as whether a certain event has occurred in the hardware unit. Reading a hardware register involves accessing its memory- or port-address with a "load" or "store" instruction, issued by the processor. Hardware registers are addressed in words, but sometimes only use a few Bit s of the word read in to, or written out to the register. Strobe registers are hardware registers which do not store data but are used as a means of triggering an action when they are accessed. They are a means of Signaling . SEE ALSO |
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