Which is an example of register indirect addressing?

Indirect addressing is a scheme in which the address specifies which memory word or register contains not the operand but the address of the operand. For example: 1) LOAD R1, @100 Load the content of memory address stored at memory address 100 to the register R1.

Which register could be used in indexed addressing?

index register
Indexed Addressing with the hc11 You say offset ,x or offset ,y to use indexed addressing. to load a known address to the index register (as usual, you need to be careful about addressing modes). The index registers are capable of very little arithmetic.

What is index addressing mode?

In index addressing mode, contents of Index register is added to address part of instruction to obtain effective address. When the base is added to the index register the resultant number is the memory location where the operand will be placed.

What is register indirect addressing mode when it is used?

In this mode, the data is transferred from one register to another by using the address pointed by the register. Register indirect addressing mode also used to call as indirect addressing mode. For example MOV A, M: means data is transferred from the memory address pointed by the register pair HLto the register A.

What is index register in assembly language?

An index register in a computer’s CPU is a processor register or assigned memory location used for modifying operand addresses during the run of a program. This proved useful for doing vector/array operations and in commercial data processing for navigating from field to field within records.

What is indirect register?

Register indirect addressing means that the location of an operand is held in a register. It is also called indexed addressing or base addressing. Register indirect addressing mode requires three read operations to access an operand.

Which is index register?

What is indirect addressing mode?

1. Indirect Addressing Mode : This is the mode of addressing where the instruction contains the address of the location where the target address is stored. So in this way it is Indirectly storing the address of the target location in another memory location. So it is called Indirect Addressing mode.

What is indexed register?

An index register is a circuit that receives, stores, and outputs instruction-changing codes in a computer. This circuit is also called an address register or a register of modifications. The index register improves computer performance by speeding up simple operations.

Which instruction is the example of index addressing mode?

Indexed addressing mode The destination operand is always the register A. These are some examples of Indexed addressing mode. MOVCA, @A+PC; MOVCA, @A+DPTR; The C in MOVC instruction refers to code byte.

What is index register example?

An index register is a circuit that receives, stores, and outputs instruction-changing codes in a computer. This circuit is also called an address register or a register of modifications. A typical computer contains several index registers, sometimes more than a dozen.

What is indirect address?

An address serving as a reference point instead of the address to the direct location is referred to as an indirect address. For example, a file saved to an indirect address in memory may be stored in any free area rather than a specific address.

What’s the difference between direct addressing and indirect addressing?

Direct addressing mode, the instruction contains the memory address to access. Example: The content in the memory address 0x000058f2 is assigned to eax. Indirect addressing mode loads a value from the address indicated by a register. Example: The content of the memory address saved in esi is assigned to eax.

How are address registers related to addressing modes?

Here is where address registers come into play. In this addressing mode, the address of the operand is considered as the contents of an address register. In other words, the address register points to the operand’s location. In the Motorola syntax, this addressing mode is indicated by enclosing the address register with round brackets.

How is the address of the operand obtained in index addressing mode?

The effective address of the data is in the base register or an index register that is specified by the instruction. While in Index Addressing mode, the address of the operand is obtained by adding to the contents of the general register (called index register) a constant value.

When to use intrasegment indirect or immediate addressing modes?

Branch Related addressing modes: Intrasegment Indirect: The effective branch address is contents of register or memory location that is accessed using any of the data related addressing mode except immediate mode. It can be used only for unconditional branch instruction.