What is jump and call?
A jump instruction will change the program counter to continue execution at a different part of the program. A call instruction will push the current program location (or current location + 1) to the call stack and jump to another part of a program.
What is call instruction?
call instruction An instruction that saves the contents of the program counter before branching to a subroutine or procedure. Compare return instruction.
What is difference between jump and loop instructions?
Loop and Jump Instructions The register is loaded with the counter for the number of repetitions prior to the start of the loop. In this instruction, both the registers decrement and the decision to jump are combined into a single instruction.
What is call instruction microprocessor?
Call Instructions – The call instruction transfers the program sequence to the memory address given in the operand. Before transferring, the address of the next instruction after CALL is pushed onto the stack. Call instructions are 2 types: Unconditional Call Instructions and Conditional Call Instructions.
What is Jnz instruction?
In 8085 Instruction set, we are having one mnemonic JNZ a16, which stands for “Jump if Not Zero” and “a16” stands for any 16-bit address. This instruction is used to jump to the address a16 as provided in the instruction. But as it is a conditional jump so it will happen if and only if the present zero flag value is 0.
What are the three bank types of instruction?
Three Categories of Instructions:
- Arithmetic manipulation: add, sub, mult, div, etc.
- Logic and bit manipulation: and, or, nor, xor, etc.
- Shift and rotation (to right or left): sll, srl, sra, rol, ror, etc.
What are the states of auxiliary carry?
Discussion Forum
| Que. | What are the states of the Auxiliary Carry (AC) and Carry Flag (dCY) after executing the following 8085 program? MVI L, 5DH MVI L, 6BH MOV A, H ADD L |
|---|---|
| b. | AC = 1 and CY = 1 |
| c. | AC = 1 and CY = 0 |
| d. | AC = 0 and CY = 0 |
| Answer:AC = 1 and CY = 0 |
Which among the following refers to absolute addressing mode?
In the absolute addressing mode: the operand is inside the instruction. the address of the operand in inside the instruction. the register containing the address of the operand is specified inside the instruction.