Consider a hypothetical microprocessor generating a 16-bit address (for example, assume that the program counter and the address registers are 16 bits wide) and having a 16-bit data bus. a. What is the maximum memory address space that the processor can access directly if it is connected to a "16-bit memory"? b. What is the maximum memory address space that the processor can access directly if it is connected to an "8-bit memory"? c. What architectural features will allow this microprocessor to access a separate "I/O space"? d. If an input and an output instruction can specify an 8-bit I/O port number, how many 8-bit I/O ports can the microprocessor support? How many 16-bit I/O ports? Explain.

A microprocessor has an increment memory direct instruction, which adds 1 to the value in a memory location. The instruction has five stages: fetch opcode(four bus clock cycles),fetch operand address (three cycles), fetch operand (three cycles) add 1 to operand (three cycles), and store operand (three cycles). a. By what amount (in percent) will the duration of the instruction increase if we have to insert two bus wait states in each memory read and memory write operation? b. repeat assuming that the increment operation takes 13 cycles instead of 3 cycles

Computer Architecture (Already submit this question, but I think I got wrong solution) Consider a computer that has a number of registers such that the three registers R0 =1500, R1 = 4500, and R2 = 1000 Show the effective address of memory and the registers’ contents in each of the following instructions 1. ADD (R1), R2 2. MOVE 500(R0), R2 3. ADD (40), R1 4. SUBTRACT (5000), R2 5. ADD #30, R2

H.W.: Consider a hypothetical machine with two steps instruction cycle: fetch cycle and execute cycle. The characteristics of the machine is given in Figure 8 with the following explanation: The processor contains a single data register, called an accumulator (AC). • Both instructions and data are 8 bits long. • The memory is organized using 8-bit words. • The instruction format provides 2 bits for the opcode, and up to 26 = 64 words of memory can be directly addressed. Opcode Address (a) Instruction format Magnitude (b) Integer format Program counter (PC)= Address of instruction Instruction register (IR)- Instruction being executed Accumulator (AC) Temporary storage (c) Internal CPU registers -Load AC from memory Store AC to memory - Add to AC from memory (d) Partial list of opcodes Figure 8 Characteristics of a Hypothetical Machine Figure 9 illustrates a partial program execution, showing the relevant portions of memory and processor registers after the first instruction, 64H has…