Basic question

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Learning Quartus II: When I create a schematic sub-block in the main schematic block design file, the compiler will not recognize connections in or out of the sub block. I have named the signals in and our the same, but no luck?

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Hi,

can you post your bdf-file ?

Kind regards

GPK

Hello Pletz,

Thanks for replying, here is the project in zip file which produces the compilation error.

This is a simple project consisting of an input pin, connected to a sub-block that contains a nand gate, then back to an output pin.

Thanks,

Arthur

In your top schematic, you have an empty sub-block, not the intended subblock-schematic. You have to insert the correct sub-block or rename the "block_name" block.

P.S.: Your sub-block has no in- and output ports. So it can't be connected.