I have 2 versions of perl binaries both built around the same version of perl 4.
This piece of code calculates different values for adbin.
If I change the "pack("n", $addec)" in the last but one line to "pack("N", $addec)" both return the same value.
I would really appreciate it if I get to know the cause for this deviation. 
 $addr   = "A400";
 $addec = unpack("N", pack("H8", substr("0" x 8 . $addr, -8)));
 $adbin = unpack("B*", pack("n", $addec));
 print "ADD_bin: $adbin \n";

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In reply to Pack function by vrajan

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