    DirA:        0*L->H,        0*H->L
    DirB:        1*L->H,        0*H->L
 EnableA:        1*L->H,        1*H->L
 EnableB:        1*L->H,        0*H->L
   StepA:     1000*L->H,     1000*H->L, Max High=10us Total High=3934us~~0/0/5/50
   StepB:        0*L->H,        0*H->L, Max High=0us Total High=0us
Position[A]=1000

Time in EnableA  max=225400 us, total=225400 us~~250/250

Time in FillISR  max=2035 us, total=27769 us~~50/800

Time in StepA  max=10 us, total=3934 us~~5/50

Time in StepISR  max=5 us, total=3975 us~~0/50

