5.2 Exception Processing Registers

Count Register (9)

The Count register acts as a timer, incrementing at a constant rate--half the maximum instruction issue rate--whether or not an instruction is executed, retired, or any forward progress is made through the pipeline.

This register can be read or written. It can be written for diagnostic purposes or system initialization; for example, to synchronize processors.

Figure 5-3 shows the format of the Count register.



Figure 5-3 Count Register Format

Copyright 1996, MIPS Technologies, Inc. -- 21 MAR 96

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