In which addressing mode, the effective address of the operand is generated by adding a constant value to the contents of register? A. absolute mode B. indirect mode C. immediate mode D. index mode E. None of the above

absolute mode
indirect mode
immediate mode
index mode E. None of the above

The correct answer is D. index mode.

In index mode, the effective address of the operand is generated by adding a constant value, called the

index, to the contents of a register. The index can be a signed or unsigned integer.

Absolute mode is a addressing mode in which the effective address of the operand is the actual address of the operand in memory.

Indirect mode is a addressing mode in which the effective address of the operand is the address of a memory location that contains the actual address of the operand.

Immediate mode is a addressing mode in which the operand is encoded directly in the instruction.

None of the above is not a valid addressing mode.