MIPS accesses memory using 32-bit addresses.

a. Are these addresses in signed 2s complement notation or unsigned binary? Explain your answer.

b. What is the memory capacity of the MIPS architecture in terms of bytes?

c. What is the memory capacity of the MIPS architecture in terms of 32-bit words?

d. If we wanted to double the memory capacity, what effect would that have on the number of bits used for an address?