Which addressing mode is used for instruction MOV A 20H?
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Which addressing mode is used for instruction MOV A 20H?
Register Indirect Addressing Mode See the following illustration. So the opcode for MOV A, @R0 is E6H. Assuming that the register bank #0 is selected, the R0 of register bank #0 holds the data 20H. Program control moves to 20H where it locates the data 2FH and it transfers 2FH to the accumulator.
What is MOV in register?
The mov instruction copies the data item referred to by its second operand (i.e. register contents, memory contents, or a constant value) into the location referred to by its first operand (i.e. a register or memory). While register-to-register moves are possible, direct memory-to-memory moves are not.
What is the addressing mode of instruction MOV A R3?
CHAPTER # 4 – ADDRESSING MODES IN 8051
| MOV A,#24H | ;Load 24H into accumulator register A |
|---|---|
| MOV R3,#255 | ;Load the decimal value 255 into R3 |
| MOV DPTR,#1234H | ;Load data pointer DPTR with decimal value 1234 |
Which of the following is an example of register addressing mode?
Examples: MVI B 45 (move the data 45H immediately to register B) In register addressing mode, the data to be operated is available inside the register(s) and register(s) is(are) operands. Therefore the operation is performed within various registers of the microprocessor.
Which addressing mode is used for global addressing mode?
S1 : Relative mode is the addressing mode which can be used to write code in which reallocation is done at run time. S2 : Indirect addressing through registers can be used to access global variables.
Which addressing mode is being used in the given instruction?
Which addressing mode is being used in the given instruction? Explanation: The given instruction is using the direct addressing mode as the address is directly mentioned in the instruction rather than being stored in any register.