Consider a processor that includes a base with indexing addressing mod...
In indexing addressing mode, the address field references a main memory address, and the referenced register contains a positive displacement from that address.
Address of operand = base register + index register + displacement
Address of operand = 3456 + 4 + 1500 = 4960
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Consider a processor that includes a base with indexing addressing mod...
Address Calculation using Base with Indexing Addressing Mode
To determine the address of the operand in the given scenario, we need to understand how the base with indexing addressing mode works and perform the necessary calculations. Let's break down the steps involved:
Step 1: Identify the values
- Displacement: 1500
- Base register value: 3456
- Index register value: 4
Step 2: Calculate the effective address
The effective address is calculated by adding the displacement, the value stored in the base register, and the product of the index register value and the size of the memory unit.
The formula for calculating the effective address using base with indexing addressing mode is as follows:
Effective Address = Displacement + Base Register Value + (Index Register Value * Size of Memory Unit)
In this case, the displacement is 1500, the base register value is 3456, and the index register value is 4. We need to determine the size of the memory unit to complete the calculation.
Step 3: Determine the size of the memory unit
The size of the memory unit could be specified in the question or the context of the problem. Assuming a memory unit size of 1, the calculation becomes:
Effective Address = 1500 + 3456 + (4 * 1)
= 1500 + 3456 + 4
= 4960
Therefore, the address of the operand is 4960.
Summary
To summarize, the address of the operand in base with indexing addressing mode is determined by adding the displacement, the value stored in the base register, and the product of the index register value and the size of the memory unit. In this case, with a displacement of 1500, a base register value of 3456, an index register value of 4, and a memory unit size of 1, the calculated effective address is 4960.
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