In 8085 Instruction set, MOV is a mnemonic, which stands for “MOVe” . In this instruction 8-bit data value in register r2 will be moved to the 8-bit register r1. ... Suppose E register content is AB H, and H register content is 9C H. When the 8085 executes this instruction, the contents of E register will change to 9C H.
What is the difference between mov and MVI instruction of an 8085 microprocessor?
What is the difference between MOV and MVI instructions of an 8085 microprocessor? MVI instruction copies data between two registers, whereas MOV instruction transfers an immediate data into a register . transfers an immediate data into a register. ... Both MOV and MVI instructions copy data between two registers.
What is the mov instruction?
The MOV instruction moves data bytes between the two specified operands . The byte specified by the second operand is copied to the location specified by the first operand. The source data byte is not affected.
What does the instruction mov A B means?
assembly microprocessors 8085. In assembly language, instruction MOV A B. means moving the content of B (source) to A (destination) .
What is the function of instruction mov a M?
In 8085 Instruction set, this instruction MOV M, r will copy 8-bit value from the register r to the memory location as pointed by HL register pair. This instruction uses register addressing for specifying the data. Thus there are seven opcodes for this type of instruction. It occupies only 1-Byte in memory.
Which flag is affected by MOV instruction?
The MOV instruction never affects the flags . Whenever the destination operand equals Zero, the Zero flag is set. A flag is set when it equals 1. A flag is clear when it equals 0.
What is full form of MOV?
| Full Form Category Term | QuickTime Movie Computing MOV | Movie (autocad Autoflix) File Type MOV | Timebased Multimedia File (apple Quicktime) File Type MOV | Metal Oxide Varistor Electronics MOV |
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What is the purpose of Xchg instruction?
In 8085 Instruction set, there is one mnemonic XCHG, which stands for eXCHanGe. This is an instruction to exchange contents of HL register pair with DE register pair . This instruction uses implied addressing mode. As it is1-Byte instruction, so It occupies only 1-Byte in the memory.
What is the difference between 8085 and 8086 microprocessor?
| Property 8085 Microprocessor 8086 Microprocessor | Data Bus Size 8-Bit 16-Bit | Address Bus Size 16-bit 20-bit | Clock Speed 3MHz Varies in range 5.8 – 10 MHz | Duty Cycle for clock 50% 33% |
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What is the function of stack pointer in 8085 microprocessor?
Stack Pointer: It is used as a memory pointer . It points to a memory location in read/write memory, called the stack. It is always incremented/decremented by 2 during push and pop operation. Here two binary numbers are added.
What is direct addressing mode?
Direct addressing mode means that the value for a given instruction in assembly programming is pointed to by a given value . This means the value is variable, based on what is stored in memory at a given address.
What do you understand from the timing diagram of a particular instruction?
Timing diagrams give us a perspective and help us understand the process of execution of a particular instruction in detail . We get to see what’s going on inside the microprocessor in every clock cycle. It is an extremely minute level of examining the working of the microprocessor.
Which type of operation is MOV instruction perform?
The MOV Instruction. MOV instruction is a copy instruction . MOV copies the source operand to the destination operand without affecting the source.
How many machine cycle is needed for MOV BC?
Summary − So this instruction MOV M, E requires 1-Byte, 2-Machine Cycles (Opcode Fetch, Memory Read) and 7 T-States for execution as shown in the timing diagram.
Which instruction does not affect any flag?
As there is no arithmetic or logical operation being performed, no flags are affected by data transfer instructions . Arithmetic instruction: Arithmetic Instructions are the instructions that perform basic arithmetic operations such as addition, subtraction, and a few more.
What is the purpose of Zero flag?
Along with a carry flag, a sign flag and an overflow flag, the zero flag is used to check the result of an arithmetic operation, including bitwise logical instructions . It is set to 1, or true, if an arithmetic result is zero, and reset otherwise.
