move(to, from, count)
register char *to, *from;
register count;
{
    register n=(count+7)/8;
    switch(count%8){
            do{	*to++ = *from++;
    case 7:	*to++ = *from++;
    case 6:	*to++ = *from++;
    case 5:	*to++ = *from++;
    case 4:	*to++ = *from++;
    case 3:	*to++ = *from++;
    case 2:	*to++ = *from++;
    case 1:	*to++ = *from++;
    case 0: ;
	    } while(--n>0);
    }
}