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Altera_Forum
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11 years ago

ALTFP_MULT always return 0

Hi everyone, I'm new to fpga/verilog and met a weird problem when using altfp_mult ip core. --------------------------------- I am using de2i-150 developing board, which has an Intel Atom CPU...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Your problem sounds like you are not correctly storing 'dataa' and 'datab' in registers after you write them from PCIe.

If you look closely (SignalTap) I think you will find that the result isn't always 0, but it is only zero when one or more of the inputs are also zero.