The values stored in the registers is calculated by using the following codes:
Step-by-step explanation:
The program is given below,
100 If, Load / by Load the first value
101 Subt Y / Subtract the value of Y, store result in AC
102 Skipcond 400 / If AC=0 (X=Y), skip the next instruction
103 Jump Else / Jump to Else part if AC is not equal to 0
104 Then, Load X / Reload X so it can be doubled
105 Add X / Double X
106 Store X / Store the new value
107 Jump Endif / Skip over the false, or else, part to the end of if
108 Else, Load Y / Start the else part by loading Y
109 Subt X / Subtract X from Y
10A Store Y / Store Y-X in Y
10B Endif, Halt / Terminate program (it doesn't do much!)
10C X, Dec 12 / Assume these values for X and Y
10D Y, Dec 20