Qsys common bus

You need to use a 'Tri-State Conduit Bridge' and a Tri-State Conduit Pin Sharer. In the Pin Sharer you will need to specify all the signals associated with the peripherals (SSRAM and LCD) that you wish to use. Note: the board's FLASH is connected to the same FPGA pins too. You may not wish to use it but you will need to ensure it is controlled in a way that doesn't interfere with the SSRAM & LCD (ensure it's chip select is deselected).

Once you have 'Generated' your Qsys system you will end up with a single set of pins that can be connected up as necessary.

I recommend you refer to the design examples that came with the kit. There is a 'board_update_portal' example that shows you how to connect up these components. I'd also suggest that, looking at your project's needs from your original post, you may want to use this example as a basis for your project. Simply take out the bits you don't want (or simply ignore them in your software).

Cheers,

Alex