Please help in solving question 2:

1. Predict the condition of the various bits found in the HCS12DG256s Condition Code Register (CCR) after the following code segment is executed. Assume these bits are all logic 0s at the beginning of this code.

ldaa #$20

oraa #$77

ldab #21

sba

C(Carry) = 0 (1 or 0) Z(Zero) = 0 (1 or 0)

O(Overflow) = 0 (1 or 0) N(Negative) = 0 (1 or 0)

2. When the code segment shown in Question 1 completes execution, the value found in Accumulator D = ________ (SHOW CALCULATIONS BELOW to PROVE ANSWER).