Multiple choice

In which addressing mode decrementation of instruction specified contents of a register will be done initially and then those contents are used as operand's effective address?

  1. Direct addressing

  2. Indirect addressing

  3. Auto increment

  4. Immediate addressing

  5. Auto decrement
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E Correct answer
Explanation

A special case of indirect register mode. The register whose number is included in the instruction code, contains the address of the operand. Decrement Mode = before operand addressing, the contents of the register is decrement.

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