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6. (10pts) Consider a 32-bit processor with fixed-sized 32-bit instructions. The first 7 bits form the opcode. The remaining 25-bits form an immediate value (the bits are used as an integer) or an address. (a) What is the maximum directly addressable memory capacity (assuming memory is byte addressable)? (b) Discuss the impact of speed if the microprocessor has: i. a 32-bit local address bus and a 16-bit data bus, or ii. a 16-bit local address bus and a 16-bit local data bus. (c) How many bits are needed for the program counter and the instruction register