Quartus II and the funny synthesis attributes

Thank you for your replies guys, the problem is solved. I used the VHDL attribute I had already defined, but changed it from "ramstyle" to "altera_attribute" (just as Daixiwen indicated), and applied it to the architecture of the tricky component. The code looks like this:

attribute altera_attribute : string;

attribute altera_attribute of PIPE_struct : architecture is "-name AUTO_SHIFT_REGISTER_RECOGNITION OFF";

After a long compilation, the problem was gone! So thank you very much again; I must say I'm pleased with your fast replies.

Best regards,

Pablo L.S.

GRADIANT