my $Cmdref;
#----------
# Using symbolic references to get code files into name space
no strict refs;
eval "our %${name}Cmd; do 'db/${name}Cmd.pm'; $Cmdref= \%${name}Cmd;";
use strict refs;
#-----------
...
foreach $cmd (keys %$Cmdref) {
...
  $opcode = sprintf("0%x",$Cmdref->{$cmd}{fixed_pattern});


##</code><code>##

my %ThingyCmd= ...
push @main::allCmd,\%ThingyCmd;