"readyfordata" won't work

Thank you for the answer. I do understand that Altera won't support flow control on MM interface, but here still be questions I do not understand:

1. If "readyfordata" was working before and now does not work anymore, but they let the developers to choose in the component editor, that makes not too much sense. It looks like a hanging-out-not-used wire from the box, what is ugly.

2. If they kept the option because of backward compatibility, that is a wrong solution, because the developer will get no any error message if re-compiles a (complicated) old design, but he will not understand why it does not work. An error message saves very long wasting time.

3. Perhaps I'm greenhorn, but don't know yet how can I use ST for a data connection when the inside target / source is user memory, what will be manipulated by C code.

4. If I want to use DMA, that needs MM interfaces, not ST ones.