(a) Two 32 kilobytes RAM chips will be interfaced to the microprocessor-based system starting at address 0x40000000. (1) Calculate number of address lines needed [4 marks] (ii) Assuming that the given 2 RAM chips have 22 address wire each, determine the memory-mapped address range for a microprocessor-based system if the address bus for the microprocessor is 32-bits wide. [4 marks) (111) Based on Q4(a)(ii), draw the decoder circuit between the microprocessor and RAM using the address range decoding table. [7 marks]