Match the Defintitions Direct Displacement Immediate Implied Index Memory Indire

Question

Match the Defintitions

Direct Displacement Immediate Implied Index Memory Indirect Register Relative Register Indirect Stack The target is specified by the Opcode itself, example CLC - clear carry bit. The target is a designated memory block adressed by dedicated register. Data pushed on or popped of in First in, Last out order. Used to restore returr addresses in subroutine calls or as a quick way to make a register available for other use The operand itself is the data of interest, treated as a constant. Target data is located a register, usually named. RISC architecture heavily dependent on this mode of addressing. Operand represents an off-set value added program counter to indicate location of next instruction to run. Usually signed and of limited range. Operand specifies the memory address of the target data. Address of target data stored in a register. base) or a specified memory address Address of target data stored in a specified memory address. Uses a register that pecifies a value, usually unsigned, that is added to a specified memory address or register contents (base) to find the location of the target data. Constant value specified in operand that is added to a registers contents to identify the memory address of the target data. Offset is usually unsigned and much smaller than the system' s valid address range.

Explanation / Answer

Implied: The target is specified by the Opcode itself, example : CLC - clear carry

bit.

Stack: The target is a designated memory block addressed by dedicated register.

Data pushed on or popped of in First in, Last out order. Used to restore return

addresses in subroutine calls or as a quick way to make a register available

for other use.

Immediate: The operand itself is the data of interest, treated as a constant.

Register: Target data is located a register, usually named. RISC architecture

heavily dependent on this mode of addressing.

Index: Operand represents an off-set value added program counter to indicate

location of next instruction to run. Usually signed and of limited range.

Direct: Operand specifies the memory address of the target data.

Register Indirect: Address of target data stored in either a register (base) or a specified memory address.

Memory Indirect: Address of target data stored in specified memory address.

Relative: Specifies a value, usually unsigned, that is added to a specified memory

address or register contents (base) to find the location of the target data.

Displacement: Constant value specified in operand that is added to a registers contents

to identify the memory address of the target data. Displacment is usually

unsigned and much smaller than the system's valid address range.

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