Forum Discussion

S_J_S's avatar
S_J_S
Icon for New Contributor rankNew Contributor
1 year ago
Solved

Agilex 5 Precision DSP block simulations

Hi, I'm using the Precision DSP blocks in my Agilex 5 design; i have a floating point Add (FP_Add_native_DSP) and a floating point MAC (FP_MAC_native_DSP), but when i try and run simulations with th...
High-level Design Tools
  • S_J_S's avatar
    S_J_S
    1 year ago

    Hi,

    Thank you for looking into this further.

    I agree the Adder is correct and i've also now seen correct behavior, so i'm not sure why it appeared incorrect previously.

    Regarding the MAC; i still see an issue and there has now been an IPS case opened for it (via our AE).

    Since there is an IPS case open i'm happy to mark this particular query as closed.

    Thank you again for your support,

    Simon

CheepinC_altera's avatar
CheepinC_altera
Icon for Regular Contributor rankRegular Contributor
1 year ago

Hi,

Since you're currently unable to provide a simulation test case, I’ve created a simple test using the fp32_add function from the Native Floating Point DSP IP for Intel Agilex FPGA. The simulation was performed using Quartus 24.3 targeting an Agilex 5 device, and it appears to run successfully, as shown in the attached screenshot.

I’ve shared the simulation folder (fp_add_dsp.zip) via email for your reference. You can review the following files to rebuild the simulation on your end:

/sim/mentor/msim_setup.tcl
/sim/fp_add_dsp.v
tb_fp_add_dsp.v


Please let me know if you have any questions or need further assistance. Thank you.

  • CheepinC_altera's avatar
    CheepinC_altera
    Icon for Regular Contributor rankRegular Contributor
    1 year ago

    Hi,

    Just to keep you informed — I’ve tested the Native Floating Point DSP IP in MAC mode, and the simulation appears to run correctly (please ignore the last 3 signals which are irrelevant).

    Given the discrepancies in our observations, please feel free to share your simulation files that replicate the issue you're seeing. This will help me investigate further and identify any potential differences or root causes.

    Let me know if you have any questions or need additional support. Thank you.

    Best regards,
    Chee Pin