The hypothetical machine of Figure 3.4 also has two I/O instructions: 0011 = Load AC from I/O

Question:

The hypothetical machine of Figure 3.4 also has two I/O instructions:
0011 = Load AC from I/O
0011 = Store AC to I/O
In these cases, the 12-bit address identifies a particular I/O device. Show the program execution (using the format of Figure 3.5) for the following program:
1. Load AC from device 5.
2. Add contents of memory location 940.
3. Store AC to device 6.
Assume that the next value retrieved from device 5 is 3 and that location 940 contains a value of 2.
Figure 3.4
Characteristics of a Hypothetical Machine

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