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Difference between CALL and JUMP instructions
  • Difficulty Level : Basic
  • Last Updated : 03 Mar, 2020

CALL instruction is used to call a subroutine. Subroutines are often used to perform tasks that need to be performed frequently. The JMP instruction is used to cause the PLC (Programmable Logic Control) to skip over rungs.

The differences Between CALL and JUMP instructions are:

SERIAL NO.JUMPCALL
1.Program control is transferred to a memory location which is in the main programProgram Control is transferred to a memory location which is not a part of main program
2.Immediate Addressing ModeImmediate Addressing Mode + Register Indirect Addressing Mode
3.Initialisation of SP(Stack Pointer) is not mandatoryInitialisation of SP(Stack Pointer) is mandatory
4.Value of Program Counter(PC) is not transferred to stackValue of Program Counter(PC) is transferred to stack
5.After JUMP, there is no return instructionAfter CALL, there is a return instruction
6.Value of SP does not changesValue of SP is decremented by 2
7.10 T states are required to execute this instruction18 T states are required to execute this instruction
8.3 Machine cycles are required to execute this instruction5 Machine cycles are required to execute this instruction

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