Forum Discussion

WWenx's avatar
WWenx
Icon for New Contributor rankNew Contributor
7 years ago

ALTFP_MATRIX_INV IP core output wrong result

I use the IP core ALTFP_MATRIX_INV of 4*4 matrix inversion, but the result of inversion output is wrong. The output of a full rank matrix (e.g. {1,2,0,0;3,4,0,0;0,0,0,0,1,0;0,0,0,0,1}) is an abnormal...
CheepinC_altera's avatar
CheepinC_altera
Icon for Regular Contributor rankRegular Contributor
7 years ago

Hi,

Sorry for the delay. Thanks for sharing the simulation screenshots. For your information, I have had some discussion with peer and also check the matrix inversion condition of the values that you used. There is no anomaly found with the condition.

To further narrow down the issue, just would like to check with you if you have had a chance to try with the latest Quartus version to see if similar issue still persist to isolate Quartus version dependent issue. You may try to use other devices ie A10 to see if similar issue persist just to isolate device depending issue. If yes, would you mind to share with me a simple simulation example which could replicate your observation in Modelsim? I would like to perform some replication on my side.

Thank you.

Chee Pin