Quartus Prime Pro 21.3: Platform Designer Problem

Hi Sheng,

Are you just getting warnings ? Or errors?

I tried removing and then re-adding all of the components and was able to get rid of the warnings about .ip files not found. These were apparently just stale .ip files being called out in the .qsf file.

However I am still getting the following errors:

Info: Done reading input file
Info: my_qsys: "Transforming system: my_qsys"
Warning: Translator MyComponent_0_avalon_slave_0_translator failed to match interface MyComponent_0.avalon_slave_0
Error: my_qsys: Connection (post-transform) is missing an end point: nios2_gen2_1.data_master->null
Error: my_qsys: Connection (post-transform) is missing an end point: clock_bridge_0.out_clk->null
Error: my_qsys: Connection (post-transform) is missing an end point: nios2_gen2_1.instruction_master->null
Error: my_qsys: Connection (post-transform) is missing a start point: null->MyComponent_0.avalon_slave_0
Error: my_qsys: Connection (post-transform) is missing a start point: null->onchip_memory2_1.s1
Error: my_qsys: Connection (post-transform) is missing a start point: null->nios2_gen2_1.debug_mem_slave
Error: Internal Error: Cannot generate a system with dangling connections.

I've found that if I only get the errors when the avalon slave in MyComponent is connected to the data_master out of the Nios II processor. If I export the avalon slave instead, it works fine. I think that the red-highlighted warning, which occurs just before the errors, may be the key to fixing this. But I don't understand what this warning means or how to fix it.

Thank you.

Terry