SIGP
OUTB (nc_istat, SIGP);
OUTB (nc_istat , SIGP ); /* Signal Process */
OUTB (nc_istat, (istat & SIGP) | INTF);
OUTB(np, nc_istat, SIGP|SEM);
OUTB(np, nc_istat, SIGP|SEM);
OUTB(np, nc_istat, SIGP|np->istat_sem);
OUTB(np, nc_istat , SIGP ); /* Signal Process */
OUTB(np, nc_istat, (istat & SIGP) | INTF | np->istat_sem);
OUTB(np, nc_istat, SIGP);
OUTB(np, nc_istat, SIGP|SEM);
OUTB(np, nc_istat, SIGP|SEM);