# malbolge and befunge mysteriously vanished... and had to be summoned anew.
function dc16 {
 local t1 t2 str i
 t1=$1; shift 1
 while [ -n "$1" ]
 do
  str=$str"16*"
  t2=$(echo "$t1 $1 $str+p"|dc)
  shift 1
  t1=$t2
 done

 [ -n "$t1" ]||return 1
 echo $t1
}

#     Example
# start at 0x0167a000
# end   at 0x0185a2f9
# range length -> 0x001d02f9
#dc16 9 15 2 0 13 1 0 0
#dd if=device ibs=1 skip=23568384 count=1966842 | tee saved/4.png |hd|less


# XXD FUNCTIONS:
function xs {
 local par=$1
 shift 1

 while [ -n "$1" ]
 do
  printf "  $1\n"
  xxd $1 | sed -ne"$par"
  shift 1
 done
}
function xt {
 local par=$1
 shift 1

 while [ -n "$1" ]
 do
  printf "  $1\n"
  xxd $1 | tail -n$par
  shift 1
 done
}