my $blocks = substr($rest,8,1);
warn "# WRITE ",as_hex($tag), " [$blocks]\n";
} elsif ( $rest = _matched $data => '04 06' ) {
my $blocks = substr($rest,8,1);
warn "# WRITE ",as_hex($tag), " [$blocks]\n";
} elsif ( $rest = _matched $data => '04 06' ) {