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Zedboard not using Mult

Former Member

Hi,

I'm using Vivado 2015.1 and I want to implement an easy design for Zedboard.
I'm using Vivado's Multiplier IP-Cores and Clock Wizard IP-Core.

In Simulation, everything is working fine.
But the multiplier is not working in hardware, although the Clock-Wizard-component is working.

I tried using DSP48-Slices only and LUTs only.

The scenario:

1: A x B = C
2: C + D = E

A = 5, B = 5, D = 5.

If E equals 30, then all 8 LEDs will shine.
If E equals 5, then only 2 LEDs will shine.

On my Zedboard only 2 LEDs will shine, thus the product of A x B equals 0.

Is this some kind of bug?

Thanks for reading

Scarra

  • 0

    You have not given us a lot of detail to go on so it could be a lot of things. How did you set your constant values in the hardware? Things that work in simulation do not necessarily translate into hardware. Is this a Zynq based design? If so you would need to have initialized the Zynq PS in order for clocks generated from the PS section to be active.

     

    You might want to use the Vivado Analyzer to observe the design at various points as you step through the process.

     

    Is this a Zynq based design?

     

    Are you loading your design from JTAG or via QSPI or SD Card?

     

    -Gary