[BaN 0]

Здесь не ограничение SV, а ограничение _hw.tcl, которое я процитировал выше:

5 hours ago, BaN said:

Only simple arithmetic of parameter values is supported for port width expressions. and bits2rep() are examples of complex functions that are not supported in hw.tcl. Although previous version of the Quartus II software did not report this error, complex functions have never been supported.