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Altera_Forum's avatar
Altera_Forum
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22 years ago

hw 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_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
22 years ago

Hi,

My 2c - if you want a multiply you can get one which runs at 85+Mhz, but takes 3-4 cycles, and a divide can run at speed, but takes multiple cycles. This allows NIOS to run all other stuff fast, but take more cycles to do mult and div - see my single precision FP stuff if you want - 3 cycles for add and 4 cycles for mult.

Oh yeah and if you want divide - I have one too (still refining for double precision atm)

Regards,

Steve.