Question: Modify the Wombat 2 computer to Wombat 3 by adding call and return machine instructions which allows subroutine calls. call instruction will allow the subprogram

Modify the Wombat 2 computer to Wombat 3 by adding call and return machine instructions which allows subroutine calls. call instruction will allow the subprogram to be called (which means start executing the code for the subprogram) whereas return instruction will allow the subprogram to end and return to main program (start executing the main program from where function call was made).

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