PCB_FE0
utf->srr1 |= pcb->pcb_flags & (PCB_FE0|PCB_FE1);
pcb->pcb_flags &= ~(PCB_FE0|PCB_FE1);
pcb->pcb_flags |= utf->srr1 & (PCB_FE0|PCB_FE1);
l->l_md.md_utf->tf_srr1 |= PSL_FP|(pcb->pcb_flags & (PCB_FE0|PCB_FE1));
gr[_REG_MSR] |= pcb->pcb_flags & (PCB_FE0|PCB_FE1);
pcb->pcb_flags &= ~(PCB_FE0|PCB_FE1);
pcb->pcb_flags |= gr[_REG_MSR] & (PCB_FE0|PCB_FE1);