For single-rank components:
The Top (non-mirrored) components, FPGA_CS0, goes to MEM_TOP_CS0
The bottom (mirrored) components, FPGA_CS1, goes to MEM_BOT_CS0
For Dual-Rank components:
The Top (non-mirrored) components, FPGA_CS0 goes to MEM_TOP_CS0 and FPGA_CS1 goes to MEM_TOP_CS1
The bottom (mirrored) components, FPGA_CS2 goes to MEM_BOT_CS0 and FPGA_CS3 goes to MEM_BOT_CS1