SAB_CCR2_BR9
r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8);
r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8);
r |= (sp >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8);