1. (14 points) Main Memory Given a system with: * 8 memory channels . 1 DRAMDIMM per channel Each DIMM has the following organization: Rank Chips per rank Columnsize 8 bit Banks per Chip Rows per Bank 65,536 Columns per Bank 2,048 Physical addresses are assigned to use row interfering scheme. Also, assume that the uppermost bit(a) (MSB) of the physical addressare used to select the channel Completethe following questionsbased on the given information (a) (5 points) What is the total amount of physical memory (calculatein bits or bytes) in the system (b) (4 points) What is the minimum number of physical address bits needed to address this much memory? (c) (5 points) Which portionsof the physical address bits are used for: column channel bank, row, and byte in bus? How many bits are used for each field? (Note: Physical addresses are assigned to use row interleaving scheme)