Consider an instruction Add 1000. Memory contents, Accumulator (AC), and R1 Register contents are depicted in the below figure:

Consider an instruction Add 1000. Memory contents, Accumulator (AC), and R1 Register

contents are depicted in the below figure: (such as memory address 1000 contains a value 1400,

memory address 1100 contains a value 400 etc. All the numbers used here are decimals.) [8

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Assuming R1 is implied in the indexed addressing mode, determine the actual value loaded

into the accumulator (AC) using the following addressing modes:

1. Immediate

2. Direct

3. Indirect

4. Indexed