Internal Error: Sub-system: OPT, File: /quartus/synth/opt/opt_dsp_wys.cpp, Line: 1688

Description

Due to a problem in the Quartus® II software version 13.1 Update 4 and earlier, you may see this error when compiling a FIR Compiler II design.

Resolution

To work around this problem, download and install patch 4.47 from the links below. You must install the Quartus II software version 13.1 Update 4 before installing this patch.

• Download the version 13.1.4 patch 4.47 for Windows (.exe)
• Download the version 13.1.4 patch 4.47 for Linux (.run)
• Download the Readme for the Quartus II software version 13.1.4 patch 4.47 (.txt)

This problem is scheduled to be fixed in a future release of the Quartus II software.