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Altera_Forum
Honored Contributor
Honored Contributorhw multiplier for Cyclone
With NIOS-1 i could select three implementations for multiplications (sw, mul_step, mul). In Nios-2 this feature is complety missing. Is there any way to tell the SOPC-Builder for NIOS-2 to integrate...
Altera_ForumHonored Contributor
Honored ContributorNios II, release 1.0, doesn't support hardware multiply on Cyclone.
We have received many requests for this so expect to see it in a future release. As for the divide custom instruction, Nios II/f has optional support for a built-in divide instruction that the compiler will use if the option is enabled. This replaces the divide custom instruction for Nios II. Also, we found a couple of corner-case bugs with the divide custom instruction so decided to turn it off. The corner cases are when you divide 0x0/0x80000000 or 0x80000000/0x80000000 you get the wrong result.
