What is function of the BIT instruction? What is difference between the BIT and TST?
BIT can test bit in memory with accumulator A by doing AND operation on every bit. The AND result is not saved, i.e., it doesn”t change the accumulator value and the memory value. It can change the flag value of N, V, Z of state register. TST is a bit operation instruction for judging a certain bit; it changes the Z flag only.
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