\begin{tabular}{|l|l|l|} \hline 0 & 4 & 15 \\ \hline Opcode Address & & Ad \\ \hline \end{tabular} (a) Instruction format 15 Magnitude (b) Integer format Program Counter (PC)= Address of instruction Instruction Register (IR) - Instruction being executed Accumulator (AC) - Temporary storage (c) Internal CPU registers 0001= Load AC from Memory 0010= Store AC to Memory 0101= Add to AC from Memory (d) Partial list of opcodes Figure 3.4 Characteristics of a Hypothetical M achine For the following memory locations and CPU registers, find what operations will be executed by the CPU and what values will registers and memory be updated to similar to the example listed in Fig. 3.5 in Chapter 3