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Altera_Forum
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21 years ago

NIOS II DMIPS

I tested MIPS in Nios II full feature with Dhrystone 2.1. as a result, cyclone ep1c20f400c7 Dev board's MIPS is about 35 DMIPS at 50MHz system clock. bus, stratix ep1s10f780c7 Dev board&#39...
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Altera_Forum
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21 years ago

The difference in DMIPS is due to the different way multiply and shift instructions are implemented.

On a Stratix device, the DSP blocks provide hardware multipliers which are used to provide

a fast implementation of multiply and shift.

On a Cyclone device, there are no DSP blocks so multiplies and shifts run slower.