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K_Crocker's avatar
K_Crocker
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

Quartus assembler crashes at 52% with an access violation

The attached archive contains a project which consistently crashes during the assembly phase. Help would be greatly appreciated!! Problem Details Error: *** Fatal Error: Access Violation at 000...
K_Crocker's avatar
K_Crocker
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

***** PROBLEM SOLVED!! *****

Problem was traced to the project using the ALTLVDS_TX macrofunction without setting the output pins to LVDS. In the Terasic Cyclone V GX Starter Kit all LVDS-capable outputs are assigned to be "2.5 V" in the QSF file -- close but not quite there!

It would be nice if this issue was caught before crashing the assembler (say, in the Fitter).