- LSB->FWD(0)/BKW(1), LSB + 1-> Motion(1)/No-Motion(0), LSB + 2-> Left Turning(0)/Right Turning(1), LSB + 3-> Turning(1)/No-Turning(0)
- Don't-care states are treated as 0
- Nothing: 0000
- FWD No-Turning: 0010
- BKW No-Turning: 0011
- FWD Turning Left: 1010
- FWD Turning Right: 1110
- BKW Turning Left: 1011
- BKW Turning Right: 1111
- Turning Left No Motion: 1000
- Turning Right No Motion: 1100
Pin1 == HIGH && Pin2 == LOW => FWD Pin2 == HIGH && Pin2 == LOW => Backward