seti $printhelp = $printhelp
seti $help = $help
if $help = 1
  echo 'Western Digital ROYL dump all modules using vendor specific commands.'
  echo 'This will dump the sectors of the modules to the files "modulexxxx.bin".'
  echo 'Note that some USB drives do not support these vendor specific commands.'
  if $printhelp = 1
    exit 0
  endif
  echo 'Hit ENTER to continue...'
  userinput $choicestring
  previousscript
endif

include good_subroutines.osc

# set a blank string variable to compare with user input
# make sure not to set this anyplace else
sets $null = ""

# set this to itself for use with the menu system
# make sure not to set this anyplace else
# if it was not previously set it will = 0
seti $using_menu = $using_menu

# set the file name to be read
while 1 = 1
  variablecheck $file
  if $error_level < 16
    seti $ask = 1
  elseif $using_menu = 1
    seti $ask = 1
  endif
  if $ask = 1
    echo "Enter file name:"
    userinput $choicestring
    if $choicestring != $null
      sets $file = $choicestring
      break
    else
      echo "Choice cannot be blank!"
    endif
  else
    break
  endif
done

getfilesize $file
seti $file_size = $error_level
if $file_size < 0
  echo "ERROR! File " $file " not found!"
  previousscript
endif
echo "Reading the file"
seti $scratchpad_size = $file_size
scratchpadsize $scratchpad_size
clearscratchpad
readscratchpad $file 0 0 $scratchpad_size

# show it on the screen
#printscratchpad 0 $scratchpad_size


# process the module
echo "Header:"
printscratchpad 0 4
seti $mod_id = scratchpad 8 w
hex
echo "Module ID = 0x" $mod_id
# find how many sectors the module contains
seti $mod_length_sectors = scratchpad 0xa
seti $tempnum = scratchpad 0xb
seti $tempnum = $tempnum > 8
seti $mod_length_sectors = $mod_length_sectors + $tempnum
echo "Size in sectors = 0x" $mod_length_sectors
seti $checksum = scratchpad 0xc dw
echo "32 bit checksum = 0x" $checksum
seti $total_records = scratchpad 0x30 w
echo "Total records = 0x" $total_records
decimal
sets $header = scratchpad 0 4
sets $header_check = "ROYL"
if $header != $header_check
  echo "Header is not 'ROYL', exiting"
  previousscript
endif

# calculate checksum
seti $calculated_checksum = 0
seti $count = 0
while $count < $scratchpad_size
  seti $dword = scratchpad $count dw
  seti $calculated_checksum = $calculated_checksum + $dword
  seti $count = $count + 4
  # skip the actual checksum bytes
  if $count = 0xc
    seti $count = $count + 4
  endif
done
seti $calculated_checksum = $calculated_checksum & 0xffffffff
seti $calculated_checksum = 0xffffffff - $calculated_checksum
seti $calculated_checksum = $calculated_checksum + 1
if $checksum = $calculated_checksum
  sets $message = " (good)"
else
  sets $message = " (BAD)"
endif
hex
echo "Calculated Checksum = 0x" $calculated_checksum $message
decimal
if $checksum != $calculated_checksum
  echo "Calculated checksum does not match actual, exiting"
  previousscript
endif

# process the data records
seti $record_count = 0
seti $offset = 0x32
echo ""
while $record_count < $total_records
  seti $record_count = $record_count + 1
  seti $record_length = scratchpad $offset b
  #printscratchpad $offset $record_length
  seti $working_offset = $offset + 1
  seti $module_copies = scratchpad $working_offset b
  seti $working_offset = $offset + 2
  seti $module_id = scratchpad $working_offset w
  seti $working_offset = $offset + 4
  seti $module_size = scratchpad $working_offset w
  seti $working_offset = $offset + 0xa
  seti $module_location1 = scratchpad $working_offset dw
  seti $working_offset = $offset + 0xe
  seti $module_location2 = scratchpad $working_offset dw
  hex
  echo "ID=0x" $module_id " sectors=0x" $module_size " copies=0x" $module_copies " copy1=0x" $module_location1 " copy2=0x" $module_location2
  decimal
  seti $offset = $offset + $record_length

done




previousscript
end