Quartus II Compile Failure for VIP Clocked Video Output (CVO) Core due to Undeclared Variable

Description

The Quartus II software compiles failure for VIP CVO core due to undeclared variable.

Affected ConfigurationHappens only if Video in and out use the same clock option is enabled.

Design Impact

Error (10207): Verilog HDL error at alt_vipitc111_IS2Vid.v(934): can’t resolve reference to object “rst_vid_clk_reg”. Customer cannot compile the core successfully in the Quartus II software.

Resolution

1. Open the source file, alt_vipitc111_IS2Vid.v file. You can find this file under QUARTUS_ROOTDIR/../ip/altera/clocked_video_ip/src_hdl.
2. Open the file, and go to line 934, or the line that contains the following “.aclr(rst_vid_clk_reg)” SDI configuration.
3. Edit this line by removing the “_reg”, making the line as “/aclr(rst_vid_clk)”
4. Run and compile

This issue will be fixed in a future version of VIP MegaCore function.