@{$bits{index}}{3,2,1,0} = ($bf[4], $bf[4], $bf[4], $bf[4]);
$bits{int}{0} = $bf[0];
@{$bits{ioctl}}{3,2,1,0} = ($bf[4], $bf[4], $bf[4], $bf[4]);
+@{$bits{isa}}{1,0} = ($bf[1], $bf[1]);
@{$bits{join}}{3,2,1,0} = ($bf[4], $bf[4], $bf[4], $bf[4]);
$bits{keys}{0} = $bf[0];
@{$bits{kill}}{3,2,1,0} = ($bf[4], $bf[4], $bf[4], $bf[4]);