Simulating Nios system as a module

Type 'vmap' in Modelsim to see where the libraries are being mapped to.

The Qsys synthesis script 'takes over' some Modelsim mappings, and hard-codes paths relative to ./libraries/, which is pretty annoying (as I comment in the appendix).

The trick is to either live with where Qsys wants to define the work folder, or define a new library for your application. For example, you could

# change directory to where you want your sketchpad library
vlib sketchpad_lib
vmap sketchpad_lib /sketchpad_lib
vlog -sv -work sketchpad_lib ../tb/tb_sketchpad.sv

Now your code will be in its own library, not the work library.

Cheers,

Dave