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Duko's avatar
Duko
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4 years ago

Internal Error: Sub-system: VPR20KMAIN altera_arch_route_lookahead

Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/altera_arch_common/altera_arch_route_lookahead.c, Line: 4315 During the routing the Internal Error above shows up. This is cons...
RichardT_altera's avatar
RichardT_altera
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4 years ago

Hi @Duko

It seems that this internal error is not found in our database. So there is no known workaround currently for this internal error (IE).

Since this is old version of Quartus, we recommend to upgrade the project to the latest Quartus version as there is a lot of fix being done.

If the design is too large, it will not fit in the device selected.

Best Regards,

Richard Tan

RichardT_altera's avatar
RichardT_altera
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4 years ago

Hi @Duko

Do you still see the IE in the latest Quartus version?

Best Regards,
Richard Tan

p/s: If any answer from the community or Intel support are helpful, please feel free to give Kudos.

  • Duko's avatar
    Duko
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    4 years ago

    Hi Richard,

    Thanks for poling on the progress.

    I still need to complete the transition/porting IPs to a newer version.
    So work in progress.

    Best Regards