/ Load the first number to be doubled.
/ Use Temp as a parameter to pass value to Subr.
/ (ครั้งที่ 1) Store the return address, and jump to the procedure.
/ Store the first number, doubled
/ Load the second number to be doubled.
/ (ครั้งที่ 2) Store the return address and jump to the procedure.
/ Store the second number doubled.
/ End program.
/ Store return address here.
/ Actual subroutine to double numbers.
/ AC now holds double the value of Temp.
/ Return to calling code.