@Franco
MyHDL is a high level HDL language.
If the MyHDL code you write describes DSPs, then you’ll get DSPs implemented in your FPGA.
DSP is a generic term form which can mean many things.
I guess that, in the context of Gnuradio, a DSP is a very complex computational block.
The first question is : Are the FPGA resources large enough to implement the DSP blocks ?
Nicolas