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I-time and e-time definition?
I-Time: In I time CU fetches an instruction from memory and place it in register. E-Time: In E time CU fetches an instruction from memory to register and place it in the Arithmetic Logic Unit.
Which register modifies ret instruction?
instruction register
There are four primary operations that are mormally performed on a register?
The four primary operations typically performed on a register are loading, storing, shifting, and manipulating. Loading involves transferring data from memory to the register, while storing sends data from the register back to memory. Shifting refers to moving the bits within the register left or right, often for arithmetic operations or data alignment. Manipulating encompasses various arithmetic and logical operations, such as addition, subtraction, and bitwise operations, on the data contained in the register.
Where does the address operand of the instruction copied?
The address operand of an instruction is typically copied into the instruction register (IR) during the instruction fetch phase of the instruction cycle. From the IR, the operand can be accessed by the control unit or the arithmetic logic unit (ALU) for execution. In some architectures, the address operand may also be stored in specific registers, depending on the instruction type and the addressing mode used.
What the Difference between accumulator and register?
The accumulator is a general register that holds a value. It is also a special register that can be used as the target for the result of various arithmetic or logical computations. For instance, if you wanted to add two numbers, you could load the first into the accumulator, add the second to the accumulator, and then store the accumulator where wanted. The instruction register is an internal register that holds the value of the instruction opcode in order for the 8085 to decode and process the instruction. While it is shown on the Intel block diagram for the 8085, it is not directly accessible by the running program - it is for internal use only by the 8085.
What the Difference between accumulator and instruction register?
Examples: /360: no accumulator 8080: A 6800: A and B 8086: AX ...
What register points to the next instruction?
actually register holds the data..there are 6 register which are temporary registers..program counter holds the address of next instruction to be fetched..instruction register holds the currently executed data...
What is the consists in the Instruction register?
The Instruction Register contains the current instruction being executed. It is an internal, special register, and you can not do anything explicit with it. If you are referring to the Program Counter, that simply contains the address of the next instruction to execute. It is incremented for each opcode and operand byte fetched.
What is CLK in Instruction register?
Clock
What is register addressing mode?
If 8 or 16 bit data is required for executing the instruction present in register/register pair and named of register/register pair is given along the register.this instruction is called register addressing mode instruction.for example:MOV B,A
What is the name of the cycle in which an instruction is taken from memory and loaded into the instruction register?
Fetch
What is the role of Flag in 8085 MP?
In the 8085 microprocessor, the flag register is a special register that contains five status flags: sign, zero, auxiliary carry, parity, and carry. These flags are used to indicate the status of the arithmetic and logical operations performed by the CPU. They help in decision-making during program execution, particularly in conditional branching. The flags are updated automatically after each instruction execution, reflecting the outcome of the operation.
