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Altera_Forum
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15 years ago

Nios II custom instruction faster in 32bit or 128bit

Hi all, Will the NIOS II run faster processing 128bit data using 128-bit custom instruction or 32bit custom instruction and run 4 times? Since NIOS II is 32-bit processor. Thanks..
Altera_Forum's avatar
Altera_Forum
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15 years ago

Because the instruction processing only has a multiplexor that selects between the OUTPUT of all the combinatorial instructions.

There are no 'enables' on the inputs.