Multiple choice technology mainframe

BO instruction means

  1. Branch on One

  2. Branch on Overflow

  3. Branch on OK

  4. None of These

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In IBM mainframe assembly, BO (Branch on Overflow) is a conditional branch instruction that transfers control when the overflow condition code is set. This occurs after arithmetic operations that exceed the register capacity. Option A (Branch on One) would likely be a different instruction; Option C is not a standard conditional branch.