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PFong2's avatar
PFong2
Icon for New Contributor rankNew Contributor
6 years ago

Quartus 18.0 generates a different RBF file for each compile. What setting is causing this behavior? Please see details section

I have attached a qar file that was archived with Quartus 18.0. When we restored this project and compiled, we got a different RBF file than the original SRM_VENTNOR.rbf file that is attached. Each t...
Vicky1's avatar
Vicky1
Icon for Regular Contributor rankRegular Contributor
6 years ago

Hi,

Apologies for the late response.

I tried to compare(Using Non Intel KDiff3 Tool, which we can`t give surety) the .rbf files generated from project provided in very first post & I observed that, there is conflict. I also realized the same behavior for two different projects which consist of one or more IPs used in design but, when I tried to compare .rbf file generated after multiple time of compilation of a project(which doesn`t consist of IP/IPs in design), got result identical .rbf files so I am not sure the exact reason but observation is that the design which consists of IPs differs while compilation.

Regards,

Vicky

PFong2's avatar
PFong2
Icon for New Contributor rankNew Contributor
6 years ago

Hi Vicky,

I have a similar FPGA design that varies from the project from the very first post just slightly. This similar design uses many of the same IPs but it compares with NO differences after each compile. Please investigate further what the root cause is for this issue. The tool should generate the exact same output for every compile since the input source files and compile settings are the same.

Thanks,

Phil